Update vendoring (#685)

* Update vendor github.com/coreos/go-systemd/dbus@v15

* Update vendor github.com/ema/qdisc

* Update vendor github.com/godbus/dbus

* Update vendor github.com/golang/protobuf/proto

* Update vendor github.com/lufia/iostat

* Update vendor github.com/matttproud/golang_protobuf_extensions/pbutil@v1.0.0

* Update vendor github.com/prometheus/client_golang/...

* Update vendor github.com/prometheus/common/...

* Update vendor github.com/prometheus/procfs/...

* Update vendor github.com/sirupsen/logrus@v1.0.3

Adds vendor golang.org/x/crypto

* Update vendor golang.org/x/net/...

* Update vendor golang.org/x/sys/...

* Update end to end output.

collector/fixtures/e2e-output.txt

@@ -2,6 +2,8 @@
 # TYPE go_gc_duration_seconds summary
 # HELP go_goroutines Number of goroutines that currently exist.
 # TYPE go_goroutines gauge
+# HELP go_info Information about the Go environment.
+# TYPE go_info gauge
 # HELP go_memstats_alloc_bytes Number of bytes allocated and still in use.
 # TYPE go_memstats_alloc_bytes gauge
 # HELP go_memstats_alloc_bytes_total Total number of bytes allocated, even if freed.
@@ -10,6 +12,8 @@
 # TYPE go_memstats_buck_hash_sys_bytes gauge
 # HELP go_memstats_frees_total Total number of frees.
 # TYPE go_memstats_frees_total counter
+# HELP go_memstats_gc_cpu_fraction The fraction of this program's available CPU time used by the GC since the program started.
+# TYPE go_memstats_gc_cpu_fraction gauge
 # HELP go_memstats_gc_sys_bytes Number of bytes used for garbage collection system metadata.
 # TYPE go_memstats_gc_sys_bytes gauge
 # HELP go_memstats_heap_alloc_bytes Number of heap bytes allocated and still in use.
@@ -48,7 +52,7 @@
 # TYPE go_memstats_stack_sys_bytes gauge
 # HELP go_memstats_sys_bytes Number of bytes obtained from system.
 # TYPE go_memstats_sys_bytes gauge
-# HELP go_threads Number of OS threads created
+# HELP go_threads Number of OS threads created.
 # TYPE go_threads gauge
 # HELP http_request_duration_microseconds The HTTP request latencies in microseconds.
 # TYPE http_request_duration_microseconds summary

vendor/github.com/ema/qdisc/get.go

@@ -57,16 +57,35 @@ type TC_Stats2 struct {
 	Overlimits uint32
 }
 
+// See struct tc_fq_qd_stats /usr/include/linux/pkt_sched.h
+type TC_Fq_Qd_Stats struct {
+	GcFlows             uint64
+	HighprioPackets     uint64
+	TcpRetrans          uint64
+	Throttled           uint64
+	FlowsPlimit         uint64
+	PktsTooLong         uint64
+	AllocationErrors    uint64
+	TimeNextDelayedFlow int64
+	Flows               uint32
+	InactiveFlows       uint32
+	ThrottledFlows      uint32
+	UnthrottleLatencyNs uint32
+}
+
 type QdiscInfo struct {
-	IfaceName  string
-	Parent     uint32
-	Handle     uint32
-	Kind       string
-	Bytes      uint64
-	Packets    uint32
-	Drops      uint32
-	Requeues   uint32
-	Overlimits uint32
+	IfaceName   string
+	Parent      uint32
+	Handle      uint32
+	Kind        string
+	Bytes       uint64
+	Packets     uint32
+	Drops       uint32
+	Requeues    uint32
+	Overlimits  uint32
+	GcFlows     uint64
+	Throttled   uint64
+	FlowsPlimit uint64
 }
 
 func parseTCAStats(attr netlink.Attribute) TC_Stats {
@@ -99,7 +118,28 @@ func parseTCAStats2(attr netlink.Attribute) TC_Stats2 {
 			stats.Requeues = nlenc.Uint32(a.Data[12:16])
 			stats.Overlimits = nlenc.Uint32(a.Data[16:20])
 		default:
-			// TODO: TCA_STATS_APP
+		}
+	}
+
+	return stats
+}
+
+func parseTC_Fq_Qd_Stats(attr netlink.Attribute) TC_Fq_Qd_Stats {
+	var stats TC_Fq_Qd_Stats
+
+	nested, _ := netlink.UnmarshalAttributes(attr.Data)
+
+	for _, a := range nested {
+		switch a.Type {
+		case TCA_STATS_APP:
+			stats.GcFlows = nlenc.Uint64(a.Data[0:8])
+			stats.HighprioPackets = nlenc.Uint64(a.Data[8:16])
+			stats.TcpRetrans = nlenc.Uint64(a.Data[16:24])
+			stats.Throttled = nlenc.Uint64(a.Data[24:32])
+			stats.FlowsPlimit = nlenc.Uint64(a.Data[32:40])
+			stats.PktsTooLong = nlenc.Uint64(a.Data[40:48])
+			stats.AllocationErrors = nlenc.Uint64(a.Data[48:56])
+		default:
 		}
 	}
 
@@ -129,6 +169,7 @@ func parseMessage(msg netlink.Message) (QdiscInfo, error) {
 	var m QdiscInfo
 	var s TC_Stats
 	var s2 TC_Stats2
+	var s_fq TC_Fq_Qd_Stats
 
 	/*
 	   struct tcmsg {
@@ -168,6 +209,16 @@ func parseMessage(msg netlink.Message) (QdiscInfo, error) {
 			m.Kind = nlenc.String(attr.Data)
 		case TCA_STATS2:
 			s2 = parseTCAStats2(attr)
+			s_fq = parseTC_Fq_Qd_Stats(attr)
+			if s_fq.GcFlows > 0 {
+				m.GcFlows = s_fq.GcFlows
+			}
+			if s_fq.Throttled > 0 {
+				m.Throttled = s_fq.Throttled
+			}
+			if s_fq.FlowsPlimit > 0 {
+				m.FlowsPlimit = s_fq.FlowsPlimit
+			}
 			m.Bytes = s2.Bytes
 			m.Packets = s2.Packets
 			m.Drops = s2.Drops

vendor/github.com/godbus/dbus/README.markdown

@@ -31,6 +31,7 @@ gives a short overview over the basic usage.
 
 #### Projects using godbus
 - [notify](https://github.com/esiqveland/notify) provides desktop notifications over dbus into a library.
+- [go-bluetooth](https://github.com/muka/go-bluetooth) provides a bluetooth client over bluez dbus API.
 
 Please note that the API is considered unstable for now and may change without
 further notice.

vendor/github.com/godbus/dbus/conn.go

@@ -9,8 +9,6 @@ import (
 	"sync"
 )
 
-const defaultSystemBusAddress = "unix:path=/var/run/dbus/system_bus_socket"
-
 var (
 	systemBus     *Conn
 	systemBusLck  sync.Mutex
@@ -146,22 +144,14 @@ func SystemBus() (conn *Conn, err error) {
 	return
 }
 
-func getSystemBusAddress() string {
-	address := os.Getenv("DBUS_SYSTEM_BUS_ADDRESS")
-	if address != "" {
-		return address
-	}
-	return defaultSystemBusAddress
-}
-
 // SystemBusPrivate returns a new private connection to the system bus.
 func SystemBusPrivate() (*Conn, error) {
-	return Dial(getSystemBusAddress())
+	return Dial(getSystemBusPlatformAddress())
 }
 
 // SystemBusPrivateHandler returns a new private connection to the system bus, using the provided handlers.
 func SystemBusPrivateHandler(handler Handler, signalHandler SignalHandler) (*Conn, error) {
-	return DialHandler(getSystemBusAddress(), handler, signalHandler)
+	return DialHandler(getSystemBusPlatformAddress(), handler, signalHandler)
 }
 
 // Dial establishes a new private connection to the message bus specified by address.
@@ -170,7 +160,7 @@ func Dial(address string) (*Conn, error) {
 	if err != nil {
 		return nil, err
 	}
-	return newConn(tr, newDefaultHandler(), newDefaultSignalHandler())
+	return newConn(tr, NewDefaultHandler(), NewDefaultSignalHandler())
 }
 
 // DialHandler establishes a new private connection to the message bus specified by address, using the supplied handlers.
@@ -184,7 +174,7 @@ func DialHandler(address string, handler Handler, signalHandler SignalHandler) (
 
 // NewConn creates a new private *Conn from an already established connection.
 func NewConn(conn io.ReadWriteCloser) (*Conn, error) {
-	return NewConnHandler(conn, newDefaultHandler(), newDefaultSignalHandler())
+	return NewConnHandler(conn, NewDefaultHandler(), NewDefaultSignalHandler())
 }
 
 // NewConnHandler creates a new private *Conn from an already established connection, using the supplied handlers.
@@ -378,7 +368,7 @@ func (conn *Conn) inWorker() {
 						conn.namesLck.Unlock()
 					}
 				}
-				go conn.handleSignal(msg)
+				conn.handleSignal(msg)
 			case TypeMethodCall:
 				go conn.handleCall(msg)
 			}

vendor/github.com/godbus/dbus/conn_darwin.go

@@ -2,9 +2,13 @@ package dbus
 
 import (
 	"errors"
+	"fmt"
+	"os"
 	"os/exec"
 )
 
+const defaultSystemBusAddress = "unix:path=/opt/local/var/run/dbus/system_bus_socket"
+
 func getSessionBusPlatformAddress() (string, error) {
 	cmd := exec.Command("launchctl", "getenv", "DBUS_LAUNCHD_SESSION_BUS_SOCKET")
 	b, err := cmd.CombinedOutput()
@@ -19,3 +23,11 @@ func getSessionBusPlatformAddress() (string, error) {
 
 	return "unix:path=" + string(b[:len(b)-1]), nil
 }
+
+func getSystemBusPlatformAddress() string {
+	address := os.Getenv("DBUS_LAUNCHD_SESSION_BUS_SOCKET")
+	if address != "" {
+		return fmt.Sprintf("unix:path=%s", address)
+	}
+	return defaultSystemBusAddress
+}

vendor/github.com/godbus/dbus/conn_other.go

@@ -5,10 +5,13 @@ package dbus
 import (
 	"bytes"
 	"errors"
+	"fmt"
 	"os"
 	"os/exec"
 )
 
+const defaultSystemBusAddress = "unix:path=/var/run/dbus/system_bus_socket"
+
 func getSessionBusPlatformAddress() (string, error) {
 	cmd := exec.Command("dbus-launch")
 	b, err := cmd.CombinedOutput()
@@ -29,3 +32,11 @@ func getSessionBusPlatformAddress() (string, error) {
 
 	return addr, nil
 }
+
+func getSystemBusPlatformAddress() string {
+	address := os.Getenv("DBUS_SYSTEM_BUS_ADDRESS")
+	if address != "" {
+		return fmt.Sprintf("unix:path=%s", address)
+	}
+	return defaultSystemBusAddress
+}

vendor/github.com/godbus/dbus/dbus.go

@@ -2,6 +2,7 @@ package dbus
 
 import (
 	"errors"
+	"fmt"
 	"reflect"
 	"strings"
 )
@@ -24,6 +25,7 @@ var (
 	objectPathType  = reflect.TypeOf(ObjectPath(""))
 	variantType     = reflect.TypeOf(Variant{Signature{""}, nil})
 	interfacesType  = reflect.TypeOf([]interface{}{})
+	interfaceType   = reflect.TypeOf((*interface{})(nil)).Elem()
 	unixFDType      = reflect.TypeOf(UnixFD(0))
 	unixFDIndexType = reflect.TypeOf(UnixFDIndex(0))
 )
@@ -56,27 +58,24 @@ func Store(src []interface{}, dest ...interface{}) error {
 }
 
 func storeInterfaces(src, dest interface{}) error {
-	return store(reflect.ValueOf(src), reflect.ValueOf(dest))
+	return store(reflect.ValueOf(dest), reflect.ValueOf(src))
 }
 
-func store(src, dest reflect.Value) error {
-	switch dest.Kind() {
-	case reflect.Ptr:
-		return store(src, dest.Elem())
-	case reflect.Interface:
-		return storeInterface(src, dest)
+func store(dest, src reflect.Value) error {
+	if dest.Kind() == reflect.Ptr {
+		return store(dest.Elem(), src)
+	}
+	switch src.Kind() {
 	case reflect.Slice:
-		return storeSlice(src, dest)
+		return storeSlice(dest, src)
 	case reflect.Map:
-		return storeMap(src, dest)
-	case reflect.Struct:
-		return storeStruct(src, dest)
+		return storeMap(dest, src)
 	default:
-		return storeBase(src, dest)
+		return storeBase(dest, src)
 	}
 }
 
-func storeBase(src, dest reflect.Value) error {
+func storeBase(dest, src reflect.Value) error {
 	return setDest(dest, src)
 }
 
@@ -86,75 +85,200 @@ func setDest(dest, src reflect.Value) error {
 		dest.Set(reflect.ValueOf(MakeVariant(src.Interface())))
 		return nil
 	}
+	if isVariant(src.Type()) && !isVariant(dest.Type()) {
+		src = getVariantValue(src)
+	}
 	if !src.Type().ConvertibleTo(dest.Type()) {
-		return errors.New(
-			"dbus.Store: type mismatch")
+		return fmt.Errorf(
+			"dbus.Store: type mismatch: cannot convert %s to %s",
+			src.Type(), dest.Type())
 	}
 	dest.Set(src.Convert(dest.Type()))
 	return nil
 }
 
-func storeStruct(sv, rv reflect.Value) error {
-	if !sv.Type().AssignableTo(interfacesType) {
-		return setDest(rv, sv)
+func kindsAreCompatible(dest, src reflect.Type) bool {
+	switch {
+	case isVariant(dest):
+		return true
+	case dest.Kind() == reflect.Interface:
+		return true
+	default:
+		return dest.Kind() == src.Kind()
 	}
-	vs := sv.Interface().([]interface{})
-	t := rv.Type()
-	ndest := make([]interface{}, 0, rv.NumField())
-	for i := 0; i < rv.NumField(); i++ {
-		field := t.Field(i)
-		if field.PkgPath == "" && field.Tag.Get("dbus") != "-" {
-			ndest = append(ndest,
-				rv.Field(i).Addr().Interface())
+}
 
-		}
+func isConvertibleTo(dest, src reflect.Type) bool {
+	switch {
+	case isVariant(dest):
+		return true
+	case dest.Kind() == reflect.Interface:
+		return true
+	case dest.Kind() == reflect.Slice:
+		return src.Kind() == reflect.Slice &&
+			isConvertibleTo(dest.Elem(), src.Elem())
+	case dest.Kind() == reflect.Struct:
+		return src == interfacesType
+	default:
+		return src.ConvertibleTo(dest)
 	}
-	if len(vs) != len(ndest) {
-		return errors.New("dbus.Store: type mismatch")
+}
+
+func storeMap(dest, src reflect.Value) error {
+	switch {
+	case !kindsAreCompatible(dest.Type(), src.Type()):
+		return fmt.Errorf(
+			"dbus.Store: type mismatch: "+
+				"map: cannot store a value of %s into %s",
+			src.Type(), dest.Type())
+	case isVariant(dest.Type()):
+		return storeMapIntoVariant(dest, src)
+	case dest.Kind() == reflect.Interface:
+		return storeMapIntoInterface(dest, src)
+	case isConvertibleTo(dest.Type().Key(), src.Type().Key()) &&
+		isConvertibleTo(dest.Type().Elem(), src.Type().Elem()):
+		return storeMapIntoMap(dest, src)
+	default:
+		return fmt.Errorf(
+			"dbus.Store: type mismatch: "+
+				"map: cannot convert a value of %s into %s",
+			src.Type(), dest.Type())
 	}
-	err := Store(vs, ndest...)
+}
+
+func storeMapIntoVariant(dest, src reflect.Value) error {
+	dv := reflect.MakeMap(src.Type())
+	err := store(dv, src)
 	if err != nil {
-		return errors.New("dbus.Store: type mismatch")
+		return err
 	}
-	return nil
+	return storeBase(dest, dv)
 }
 
-func storeMap(sv, rv reflect.Value) error {
-	if sv.Kind() != reflect.Map {
-		return errors.New("dbus.Store: type mismatch")
+func storeMapIntoInterface(dest, src reflect.Value) error {
+	var dv reflect.Value
+	if isVariant(src.Type().Elem()) {
+		//Convert variants to interface{} recursively when converting
+		//to interface{}
+		dv = reflect.MakeMap(
+			reflect.MapOf(src.Type().Key(), interfaceType))
+	} else {
+		dv = reflect.MakeMap(src.Type())
 	}
-	keys := sv.MapKeys()
-	rv.Set(reflect.MakeMap(rv.Type()))
-	destElemType := rv.Type().Elem()
+	err := store(dv, src)
+	if err != nil {
+		return err
+	}
+	return storeBase(dest, dv)
+}
+
+func storeMapIntoMap(dest, src reflect.Value) error {
+	if dest.IsNil() {
+		dest.Set(reflect.MakeMap(dest.Type()))
+	}
+	keys := src.MapKeys()
 	for _, key := range keys {
-		elemv := sv.MapIndex(key)
-		v := newDestValue(elemv, destElemType)
-		err := store(getVariantValue(elemv), v)
+		dkey := key.Convert(dest.Type().Key())
+		dval := reflect.New(dest.Type().Elem()).Elem()
+		err := store(dval, getVariantValue(src.MapIndex(key)))
 		if err != nil {
 			return err
 		}
-		if !v.Elem().Type().ConvertibleTo(destElemType) {
-			return errors.New(
-				"dbus.Store: type mismatch")
-		}
-		rv.SetMapIndex(key, v.Elem().Convert(destElemType))
+		dest.SetMapIndex(dkey, dval)
 	}
 	return nil
 }
 
-func storeSlice(sv, rv reflect.Value) error {
-	if sv.Kind() != reflect.Slice {
-		return errors.New("dbus.Store: type mismatch")
+func storeSlice(dest, src reflect.Value) error {
+	switch {
+	case src.Type() == interfacesType && dest.Kind() == reflect.Struct:
+		//The decoder always decodes structs as slices of interface{}
+		return storeStruct(dest, src)
+	case !kindsAreCompatible(dest.Type(), src.Type()):
+		return fmt.Errorf(
+			"dbus.Store: type mismatch: "+
+				"slice: cannot store a value of %s into %s",
+			src.Type(), dest.Type())
+	case isVariant(dest.Type()):
+		return storeSliceIntoVariant(dest, src)
+	case dest.Kind() == reflect.Interface:
+		return storeSliceIntoInterface(dest, src)
+	case isConvertibleTo(dest.Type().Elem(), src.Type().Elem()):
+		return storeSliceIntoSlice(dest, src)
+	default:
+		return fmt.Errorf(
+			"dbus.Store: type mismatch: "+
+				"slice: cannot convert a value of %s into %s",
+			src.Type(), dest.Type())
 	}
-	rv.Set(reflect.MakeSlice(rv.Type(), sv.Len(), sv.Len()))
-	destElemType := rv.Type().Elem()
-	for i := 0; i < sv.Len(); i++ {
-		v := newDestValue(sv.Index(i), destElemType)
-		err := store(getVariantValue(sv.Index(i)), v)
-		if err != nil {
-			return err
+}
+
+func storeStruct(dest, src reflect.Value) error {
+	if isVariant(dest.Type()) {
+		return storeBase(dest, src)
+	}
+	dval := make([]interface{}, 0, dest.NumField())
+	dtype := dest.Type()
+	for i := 0; i < dest.NumField(); i++ {
+		field := dest.Field(i)
+		ftype := dtype.Field(i)
+		if ftype.PkgPath != "" {
+			continue
 		}
-		err = setDest(rv.Index(i), v.Elem())
+		if ftype.Tag.Get("dbus") == "-" {
+			continue
+		}
+		dval = append(dval, field.Addr().Interface())
+	}
+	if src.Len() != len(dval) {
+		return fmt.Errorf(
+			"dbus.Store: type mismatch: "+
+				"destination struct does not have "+
+				"enough fields need: %d have: %d",
+			src.Len(), len(dval))
+	}
+	return Store(src.Interface().([]interface{}), dval...)
+}
+
+func storeSliceIntoVariant(dest, src reflect.Value) error {
+	dv := reflect.MakeSlice(src.Type(), src.Len(), src.Cap())
+	err := store(dv, src)
+	if err != nil {
+		return err
+	}
+	return storeBase(dest, dv)
+}
+
+func storeSliceIntoInterface(dest, src reflect.Value) error {
+	var dv reflect.Value
+	if isVariant(src.Type().Elem()) {
+		//Convert variants to interface{} recursively when converting
+		//to interface{}
+		dv = reflect.MakeSlice(reflect.SliceOf(interfaceType),
+			src.Len(), src.Cap())
+	} else {
+		dv = reflect.MakeSlice(src.Type(), src.Len(), src.Cap())
+	}
+	err := store(dv, src)
+	if err != nil {
+		return err
+	}
+	return storeBase(dest, dv)
+}
+
+func storeSliceIntoSlice(dest, src reflect.Value) error {
+	if dest.IsNil() || dest.Len() < src.Len() {
+		dest.Set(reflect.MakeSlice(dest.Type(), src.Len(), src.Cap()))
+	}
+	if dest.Len() != src.Len() {
+		return fmt.Errorf(
+			"dbus.Store: type mismatch: "+
+				"slices are different lengths "+
+				"need: %d have: %d",
+			src.Len(), dest.Len())
+	}
+	for i := 0; i < src.Len(); i++ {
+		err := store(dest.Index(i), getVariantValue(src.Index(i)))
 		if err != nil {
 			return err
 		}
@@ -162,10 +286,6 @@ func storeSlice(sv, rv reflect.Value) error {
 	return nil
 }
 
-func storeInterface(sv, rv reflect.Value) error {
-	return setDest(rv, getVariantValue(sv))
-}
-
 func getVariantValue(in reflect.Value) reflect.Value {
 	if isVariant(in.Type()) {
 		return reflect.ValueOf(in.Interface().(Variant).Value())
@@ -173,37 +293,6 @@ func getVariantValue(in reflect.Value) reflect.Value {
 	return in
 }
 
-func newDestValue(srcValue reflect.Value, destType reflect.Type) reflect.Value {
-	switch srcValue.Kind() {
-	case reflect.Map:
-		switch {
-		case !isVariant(srcValue.Type().Elem()):
-			return reflect.New(destType)
-		case destType.Kind() == reflect.Map:
-			return reflect.New(destType)
-		default:
-			return reflect.New(
-				reflect.MapOf(srcValue.Type().Key(), destType))
-		}
-
-	case reflect.Slice:
-		switch {
-		case !isVariant(srcValue.Type().Elem()):
-			return reflect.New(destType)
-		case destType.Kind() == reflect.Slice:
-			return reflect.New(destType)
-		default:
-			return reflect.New(
-				reflect.SliceOf(destType))
-		}
-	default:
-		if !isVariant(srcValue.Type()) {
-			return reflect.New(destType)
-		}
-		return newDestValue(getVariantValue(srcValue), destType)
-	}
-}
-
 func isVariant(t reflect.Type) bool {
 	return t == variantType
 }

vendor/github.com/godbus/dbus/default_handler.go

@@ -18,7 +18,10 @@ func newIntrospectIntf(h *defaultHandler) *exportedIntf {
 	return newExportedIntf(methods, true)
 }
 
-func newDefaultHandler() *defaultHandler {
+//NewDefaultHandler returns an instance of the default
+//call handler. This is useful if you want to implement only
+//one of the two handlers but not both.
+func NewDefaultHandler() *defaultHandler {
 	h := &defaultHandler{
 		objects:     make(map[ObjectPath]*exportedObj),
 		defaultIntf: make(map[string]*exportedIntf),
@@ -214,7 +217,10 @@ func (obj *exportedIntf) isFallbackInterface() bool {
 	return obj.includeSubtree
 }
 
-func newDefaultSignalHandler() *defaultSignalHandler {
+//NewDefaultSignalHandler returns an instance of the default
+//signal handler. This is useful if you want to implement only
+//one of the two handlers but not both.
+func NewDefaultSignalHandler() *defaultSignalHandler {
 	return &defaultSignalHandler{}
 }
 
@@ -230,14 +236,16 @@ type defaultSignalHandler struct {
 }
 
 func (sh *defaultSignalHandler) DeliverSignal(intf, name string, signal *Signal) {
-	sh.RLock()
-	defer sh.RUnlock()
-	if sh.closed {
-		return
-	}
-	for _, ch := range sh.signals {
-		ch <- signal
-	}
+	go func() {
+		sh.RLock()
+		defer sh.RUnlock()
+		if sh.closed {
+			return
+		}
+		for _, ch := range sh.signals {
+			ch <- signal
+		}
+	}()
 }
 
 func (sh *defaultSignalHandler) Init() error {

vendor/github.com/godbus/dbus/object.go

@@ -43,7 +43,8 @@ func (o *Object) AddMatchSignal(iface, member string) *Call {
 // will be allocated. Otherwise, ch has to be buffered or Go will panic.
 //
 // If the flags include FlagNoReplyExpected, ch is ignored and a Call structure
-// is returned of which only the Err member is valid.
+// is returned with any error in Err and a closed channel in Done containing
+// the returned Call as it's one entry.
 //
 // If the method parameter contains a dot ('.'), the part before the last dot
 // specifies the interface on which the method is called.
@@ -97,11 +98,21 @@ func (o *Object) Go(method string, flags Flags, ch chan *Call, args ...interface
 	}
 	o.conn.outLck.RLock()
 	defer o.conn.outLck.RUnlock()
+	done := make(chan *Call, 1)
+	call := &Call{
+		Err:  nil,
+		Done: done,
+	}
+	defer func() {
+		call.Done <- call
+		close(done)
+	}()
 	if o.conn.closed {
-		return &Call{Err: ErrClosed}
+		call.Err = ErrClosed
+		return call
 	}
 	o.conn.out <- msg
-	return &Call{Err: nil}
+	return call
 }
 
 // GetProperty calls org.freedesktop.DBus.Properties.GetProperty on the given
@@ -125,12 +136,12 @@ func (o *Object) GetProperty(p string) (Variant, error) {
 	return result, nil
 }
 
-// Destination returns the destination that calls on o are sent to.
+// Destination returns the destination that calls on (o *Object) are sent to.
 func (o *Object) Destination() string {
 	return o.dest
 }
 
-// Path returns the path that calls on o are sent to.
+// Path returns the path that calls on (o *Object") are sent to.
 func (o *Object) Path() ObjectPath {
 	return o.path
 }

vendor/github.com/godbus/dbus/transport_generic.go

@@ -4,8 +4,23 @@ import (
 	"encoding/binary"
 	"errors"
 	"io"
+	"unsafe"
 )
 
+var nativeEndian binary.ByteOrder
+
+func detectEndianness() binary.ByteOrder {
+	var x uint32 = 0x01020304
+		if *(*byte)(unsafe.Pointer(&x)) == 0x01 {
+		return binary.BigEndian
+	}
+	return binary.LittleEndian
+}
+
+func init() {
+	nativeEndian = detectEndianness()
+}
+
 type genericTransport struct {
 	io.ReadWriteCloser
 }
@@ -31,5 +46,5 @@ func (t genericTransport) SendMessage(msg *Message) error {
 			return errors.New("dbus: unix fd passing not enabled")
 		}
 	}
-	return msg.EncodeTo(t, binary.LittleEndian)
+	return msg.EncodeTo(t, nativeEndian)
 }

vendor/github.com/godbus/dbus/transport_unix.go

@@ -175,7 +175,7 @@ func (t *unixTransport) SendMessage(msg *Message) error {
 		msg.Headers[FieldUnixFDs] = MakeVariant(uint32(len(fds)))
 		oob := syscall.UnixRights(fds...)
 		buf := new(bytes.Buffer)
-		msg.EncodeTo(buf, binary.LittleEndian)
+		msg.EncodeTo(buf, nativeEndian)
 		n, oobn, err := t.UnixConn.WriteMsgUnix(buf.Bytes(), oob, nil)
 		if err != nil {
 			return err
@@ -184,7 +184,7 @@ func (t *unixTransport) SendMessage(msg *Message) error {
 			return io.ErrShortWrite
 		}
 	} else {
-		if err := msg.EncodeTo(t, binary.LittleEndian); err != nil {
+		if err := msg.EncodeTo(t, nativeEndian); err != nil {
 			return nil
 		}
 	}

vendor/github.com/godbus/dbus/transport_unixcred_freebsd.go

@@ -0,0 +1,91 @@
+// The UnixCredentials system call is currently only implemented on Linux
+// http://golang.org/src/pkg/syscall/sockcmsg_linux.go
+// https://golang.org/s/go1.4-syscall
+// http://code.google.com/p/go/source/browse/unix/sockcmsg_linux.go?repo=sys
+
+// Local implementation of the UnixCredentials system call for FreeBSD
+
+package dbus
+
+/*
+const int sizeofPtr = sizeof(void*);
+#define _WANT_UCRED
+#include <sys/ucred.h>
+*/
+import "C"
+
+import (
+	"io"
+	"os"
+	"syscall"
+	"unsafe"
+)
+
+// http://golang.org/src/pkg/syscall/ztypes_linux_amd64.go
+// https://golang.org/src/syscall/ztypes_freebsd_amd64.go
+type Ucred struct {
+	Pid int32
+	Uid uint32
+	Gid uint32
+}
+
+// http://golang.org/src/pkg/syscall/types_linux.go
+// https://golang.org/src/syscall/types_freebsd.go
+// https://github.com/freebsd/freebsd/blob/master/sys/sys/ucred.h
+const (
+	SizeofUcred = C.sizeof_struct_ucred
+)
+
+// http://golang.org/src/pkg/syscall/sockcmsg_unix.go
+func cmsgAlignOf(salen int) int {
+	salign := C.sizeofPtr
+
+	return (salen + salign - 1) & ^(salign - 1)
+}
+
+// http://golang.org/src/pkg/syscall/sockcmsg_unix.go
+func cmsgData(h *syscall.Cmsghdr) unsafe.Pointer {
+	return unsafe.Pointer(uintptr(unsafe.Pointer(h)) + uintptr(cmsgAlignOf(syscall.SizeofCmsghdr)))
+}
+
+// http://golang.org/src/pkg/syscall/sockcmsg_linux.go
+// UnixCredentials encodes credentials into a socket control message
+// for sending to another process. This can be used for
+// authentication.
+func UnixCredentials(ucred *Ucred) []byte {
+	b := make([]byte, syscall.CmsgSpace(SizeofUcred))
+	h := (*syscall.Cmsghdr)(unsafe.Pointer(&b[0]))
+	h.Level = syscall.SOL_SOCKET
+	h.Type = syscall.SCM_CREDS
+	h.SetLen(syscall.CmsgLen(SizeofUcred))
+	*((*Ucred)(cmsgData(h))) = *ucred
+	return b
+}
+
+// http://golang.org/src/pkg/syscall/sockcmsg_linux.go
+// ParseUnixCredentials decodes a socket control message that contains
+// credentials in a Ucred structure. To receive such a message, the
+// SO_PASSCRED option must be enabled on the socket.
+func ParseUnixCredentials(m *syscall.SocketControlMessage) (*Ucred, error) {
+	if m.Header.Level != syscall.SOL_SOCKET {
+		return nil, syscall.EINVAL
+	}
+	if m.Header.Type != syscall.SCM_CREDS {
+		return nil, syscall.EINVAL
+	}
+	ucred := *(*Ucred)(unsafe.Pointer(&m.Data[0]))
+	return &ucred, nil
+}
+
+func (t *unixTransport) SendNullByte() error {
+	ucred := &Ucred{Pid: int32(os.Getpid()), Uid: uint32(os.Getuid()), Gid: uint32(os.Getgid())}
+	b := UnixCredentials(ucred)
+	_, oobn, err := t.UnixConn.WriteMsgUnix([]byte{0}, b, nil)
+	if err != nil {
+		return err
+	}
+	if oobn != len(b) {
+		return io.ErrShortWrite
+	}
+	return nil
+}

vendor/github.com/godbus/dbus/variant.go

@@ -17,7 +17,12 @@ type Variant struct {
 // MakeVariant converts the given value to a Variant. It panics if v cannot be
 // represented as a D-Bus type.
 func MakeVariant(v interface{}) Variant {
-	return Variant{SignatureOf(v), v}
+	return MakeVariantWithSignature(v, SignatureOf(v))
+}
+
+// MakeVariantWithSignature converts the given value to a Variant.
+func MakeVariantWithSignature(v interface{}, s Signature) Variant {
+	return Variant{s, v}
 }
 
 // ParseVariant parses the given string as a variant as described at

vendor/github.com/golang/protobuf/proto/encode.go

@@ -174,11 +174,11 @@ func sizeFixed32(x uint64) int {
 // This is the format used for the sint64 protocol buffer type.
 func (p *Buffer) EncodeZigzag64(x uint64) error {
 	// use signed number to get arithmetic right shift.
-	return p.EncodeVarint(uint64((x << 1) ^ uint64((int64(x) >> 63))))
+	return p.EncodeVarint((x << 1) ^ uint64((int64(x) >> 63)))
 }
 
 func sizeZigzag64(x uint64) int {
-	return sizeVarint(uint64((x << 1) ^ uint64((int64(x) >> 63))))
+	return sizeVarint((x << 1) ^ uint64((int64(x) >> 63)))
 }
 
 // EncodeZigzag32 writes a zigzag-encoded 32-bit integer

vendor/github.com/golang/protobuf/proto/lib.go

@@ -73,7 +73,6 @@ for a protocol buffer variable v:
 When the .proto file specifies `syntax="proto3"`, there are some differences:
 
   - Non-repeated fields of non-message type are values instead of pointers.
-  - Getters are only generated for message and oneof fields.
   - Enum types do not get an Enum method.
 
 The simplest way to describe this is to see an example.

vendor/github.com/golang/protobuf/proto/text_parser.go

@@ -865,7 +865,7 @@ func (p *textParser) readAny(v reflect.Value, props *Properties) error {
 		return p.readStruct(fv, terminator)
 	case reflect.Uint32:
 		if x, err := strconv.ParseUint(tok.value, 0, 32); err == nil {
-			fv.SetUint(uint64(x))
+			fv.SetUint(x)
 			return nil
 		}
 	case reflect.Uint64:

vendor/github.com/lufia/iostat/README.md

@@ -1,4 +1,4 @@
-# iostat - reports I/O statistics
+# iostat - reports I/O and CPU statistics
 
 [![GoDoc](https://godoc.org/github.com/lufia/iostat?status.svg)](https://godoc.org/github.com/lufia/iostat)
 

vendor/github.com/lufia/iostat/iostat.go

@@ -1,4 +1,4 @@
-// Package iostat presents I/O statistics.
+// Package iostat presents I/O and CPU statistics.
 package iostat
 
 import "time"
@@ -18,3 +18,20 @@ type DriveStats struct {
 	ReadLatency    time.Duration
 	WriteLatency   time.Duration
 }
+
+// CPUStats represents CPU statistics.
+type CPUStats struct {
+	// consumed cpu ticks for each.
+	User uint64
+	Nice uint64
+	Sys  uint64
+	Idle uint64
+}
+
+// LoadAvg represents load averages of the system.
+type LoadAvg struct {
+	// load averages
+	Load1  float64 // over past 1 minute
+	Load5  float64 // over past 5 minutes
+	Load15 float64 // over past 15 minutes
+}

vendor/github.com/lufia/iostat/iostat_darwin.c

@@ -1,14 +1,16 @@
 #include <stdint.h>
+#include <CoreFoundation/CoreFoundation.h>
 #include "iostat_darwin.h"
 
 #define IOKIT	1	/* to get io_name_t in device_types.h */
 
-#include <CoreFoundation/CoreFoundation.h>
 #include <IOKit/IOKitLib.h>
 #include <IOKit/storage/IOBlockStorageDriver.h>
 #include <IOKit/storage/IOMedia.h>
 #include <IOKit/IOBSD.h>
 
+#include <mach/mach_host.h>
+
 static int getdrivestat(io_registry_entry_t d, DriveStats *stat);
 static int fillstat(io_registry_entry_t d, DriveStats *stat);
 
@@ -126,3 +128,23 @@ fillstat(io_registry_entry_t d, DriveStats *stat)
 	CFRelease(props);
 	return 0;
 }
+
+int
+readcpustat(CPUStats *stats)
+{
+	mach_port_t port;
+	host_cpu_load_info_data_t load;
+	mach_msg_type_number_t n;
+	kern_return_t status;
+
+	port = mach_host_self();
+	n = HOST_CPU_LOAD_INFO_COUNT;
+	status = host_statistics(port, HOST_CPU_LOAD_INFO, (host_info_t)&load, &n);
+	if(status != KERN_SUCCESS)
+		return -1;
+	stats->user = load.cpu_ticks[CPU_STATE_USER];
+	stats->nice = load.cpu_ticks[CPU_STATE_NICE];
+	stats->sys = load.cpu_ticks[CPU_STATE_SYSTEM];
+	stats->idle = load.cpu_ticks[CPU_STATE_IDLE];
+	return 0;
+}

vendor/github.com/lufia/iostat/iostat_darwin.go

@@ -4,6 +4,7 @@ package iostat
 
 // #cgo LDFLAGS: -framework CoreFoundation -framework IOKit
 // #include <stdint.h>
+// #include <CoreFoundation/CoreFoundation.h>
 // #include "iostat_darwin.h"
 import "C"
 import (
@@ -35,3 +36,31 @@ func ReadDriveStats() ([]*DriveStats, error) {
 	}
 	return stats, nil
 }
+
+// ReadCPUStats returns statistics of CPU usage.
+func ReadCPUStats() (*CPUStats, error) {
+	var cpu C.CPUStats
+	_, err := C.readcpustat(&cpu)
+	if err != nil {
+		return nil, err
+	}
+	return &CPUStats{
+		User: uint64(cpu.user),
+		Nice: uint64(cpu.nice),
+		Sys:  uint64(cpu.sys),
+		Idle: uint64(cpu.idle),
+	}, nil
+}
+
+// ReadLoadAvg returns load averages over periods of time.
+func ReadLoadAvg() (*LoadAvg, error) {
+	var load [3]C.double
+	if _, err := C.getloadavg(&load[0], C.int(len(load))); err != nil {
+		return nil, err
+	}
+	return &LoadAvg{
+		Load1:  float64(load[0]),
+		Load5:  float64(load[1]),
+		Load15: float64(load[2]),
+	}, nil
+}

vendor/github.com/lufia/iostat/iostat_darwin.h

@@ -1,4 +1,5 @@
 typedef struct DriveStats DriveStats;
+typedef struct CPUStats CPUStats;
 
 enum {
 	NDRIVE = 16,
@@ -20,4 +21,12 @@ struct DriveStats {
 	int64_t writelat;
 };
 
+struct CPUStats {
+	natural_t user;
+	natural_t nice;
+	natural_t sys;
+	natural_t idle;
+};
+
 extern int readdrivestat(DriveStats a[], int n);
+extern int readcpustat(CPUStats *cpu);

vendor/github.com/lufia/iostat/iostat_linux.go

@@ -10,3 +10,13 @@ import (
 func ReadDriveStats() ([]*DriveStats, error) {
 	return nil, errors.New("not implement")
 }
+
+// ReadCPUStats returns statistics of CPU usage.
+func ReadCPUStats() (*CPUStats, error) {
+	return nil, errors.New("not implement")
+}
+
+// ReadLoadAvg returns load averages over periods of time.
+func ReadLoadAvg() (*LoadAvg, error) {
+	return nil, errors.New("not implement")
+}

vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/Makefile

@@ -1,7 +0,0 @@
-all:
-
-cover:
-	go test -cover -v -coverprofile=cover.dat ./...
-	go tool cover -func cover.dat
-
-.PHONY: cover

vendor/github.com/prometheus/client_golang/prometheus/counter.go

@@ -70,16 +70,12 @@ func (c *counter) Add(v float64) {
 // if you want to count the same thing partitioned by various dimensions
 // (e.g. number of HTTP requests, partitioned by response code and
 // method). Create instances with NewCounterVec.
-//
-// CounterVec embeds MetricVec. See there for a full list of methods with
-// detailed documentation.
 type CounterVec struct {
-	*MetricVec
+	*metricVec
 }
 
 // NewCounterVec creates a new CounterVec based on the provided CounterOpts and
-// partitioned by the given label names. At least one label name must be
-// provided.
+// partitioned by the given label names.
 func NewCounterVec(opts CounterOpts, labelNames []string) *CounterVec {
 	desc := NewDesc(
 		BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
@@ -88,7 +84,7 @@ func NewCounterVec(opts CounterOpts, labelNames []string) *CounterVec {
 		opts.ConstLabels,
 	)
 	return &CounterVec{
-		MetricVec: newMetricVec(desc, func(lvs ...string) Metric {
+		metricVec: newMetricVec(desc, func(lvs ...string) Metric {
 			result := &counter{value: value{
 				desc:       desc,
 				valType:    CounterValue,
@@ -100,22 +96,51 @@ func NewCounterVec(opts CounterOpts, labelNames []string) *CounterVec {
 	}
 }
 
-// GetMetricWithLabelValues replaces the method of the same name in
-// MetricVec. The difference is that this method returns a Counter and not a
-// Metric so that no type conversion is required.
+// GetMetricWithLabelValues returns the Counter for the given slice of label
+// values (same order as the VariableLabels in Desc). If that combination of
+// label values is accessed for the first time, a new Counter is created.
+//
+// It is possible to call this method without using the returned Counter to only
+// create the new Counter but leave it at its starting value 0. See also the
+// SummaryVec example.
+//
+// Keeping the Counter for later use is possible (and should be considered if
+// performance is critical), but keep in mind that Reset, DeleteLabelValues and
+// Delete can be used to delete the Counter from the CounterVec. In that case,
+// the Counter will still exist, but it will not be exported anymore, even if a
+// Counter with the same label values is created later.
+//
+// An error is returned if the number of label values is not the same as the
+// number of VariableLabels in Desc.
+//
+// Note that for more than one label value, this method is prone to mistakes
+// caused by an incorrect order of arguments. Consider GetMetricWith(Labels) as
+// an alternative to avoid that type of mistake. For higher label numbers, the
+// latter has a much more readable (albeit more verbose) syntax, but it comes
+// with a performance overhead (for creating and processing the Labels map).
+// See also the GaugeVec example.
 func (m *CounterVec) GetMetricWithLabelValues(lvs ...string) (Counter, error) {
-	metric, err := m.MetricVec.GetMetricWithLabelValues(lvs...)
+	metric, err := m.metricVec.getMetricWithLabelValues(lvs...)
 	if metric != nil {
 		return metric.(Counter), err
 	}
 	return nil, err
 }
 
-// GetMetricWith replaces the method of the same name in MetricVec. The
-// difference is that this method returns a Counter and not a Metric so that no
-// type conversion is required.
+// GetMetricWith returns the Counter for the given Labels map (the label names
+// must match those of the VariableLabels in Desc). If that label map is
+// accessed for the first time, a new Counter is created. Implications of
+// creating a Counter without using it and keeping the Counter for later use are
+// the same as for GetMetricWithLabelValues.
+//
+// An error is returned if the number and names of the Labels are inconsistent
+// with those of the VariableLabels in Desc.
+//
+// This method is used for the same purpose as
+// GetMetricWithLabelValues(...string). See there for pros and cons of the two
+// methods.
 func (m *CounterVec) GetMetricWith(labels Labels) (Counter, error) {
-	metric, err := m.MetricVec.GetMetricWith(labels)
+	metric, err := m.metricVec.getMetricWith(labels)
 	if metric != nil {
 		return metric.(Counter), err
 	}
@@ -127,14 +152,14 @@ func (m *CounterVec) GetMetricWith(labels Labels) (Counter, error) {
 // error, WithLabelValues allows shortcuts like
 //     myVec.WithLabelValues("404", "GET").Add(42)
 func (m *CounterVec) WithLabelValues(lvs ...string) Counter {
-	return m.MetricVec.WithLabelValues(lvs...).(Counter)
+	return m.metricVec.withLabelValues(lvs...).(Counter)
 }
 
 // With works as GetMetricWith, but panics where GetMetricWithLabels would have
 // returned an error. By not returning an error, With allows shortcuts like
 //     myVec.With(Labels{"code": "404", "method": "GET"}).Add(42)
 func (m *CounterVec) With(labels Labels) Counter {
-	return m.MetricVec.With(labels).(Counter)
+	return m.metricVec.with(labels).(Counter)
 }
 
 // CounterFunc is a Counter whose value is determined at collect time by calling a

vendor/github.com/prometheus/client_golang/prometheus/desc.go

@@ -25,19 +25,6 @@ import (
 	dto "github.com/prometheus/client_model/go"
 )
 
-// reservedLabelPrefix is a prefix which is not legal in user-supplied
-// label names.
-const reservedLabelPrefix = "__"
-
-// Labels represents a collection of label name -> value mappings. This type is
-// commonly used with the With(Labels) and GetMetricWith(Labels) methods of
-// metric vector Collectors, e.g.:
-//     myVec.With(Labels{"code": "404", "method": "GET"}).Add(42)
-//
-// The other use-case is the specification of constant label pairs in Opts or to
-// create a Desc.
-type Labels map[string]string
-
 // Desc is the descriptor used by every Prometheus Metric. It is essentially
 // the immutable meta-data of a Metric. The normal Metric implementations
 // included in this package manage their Desc under the hood. Users only have to
@@ -122,6 +109,12 @@ func NewDesc(fqName, help string, variableLabels []string, constLabels Labels) *
 	for _, labelName := range labelNames {
 		labelValues = append(labelValues, constLabels[labelName])
 	}
+	// Validate the const label values. They can't have a wrong cardinality, so
+	// use in len(labelValues) as expectedNumberOfValues.
+	if err := validateLabelValues(labelValues, len(labelValues)); err != nil {
+		d.err = err
+		return d
+	}
 	// Now add the variable label names, but prefix them with something that
 	// cannot be in a regular label name. That prevents matching the label
 	// dimension with a different mix between preset and variable labels.
@@ -137,6 +130,7 @@ func NewDesc(fqName, help string, variableLabels []string, constLabels Labels) *
 		d.err = errors.New("duplicate label names")
 		return d
 	}
+
 	vh := hashNew()
 	for _, val := range labelValues {
 		vh = hashAdd(vh, val)
@@ -193,8 +187,3 @@ func (d *Desc) String() string {
 		d.variableLabels,
 	)
 }
-
-func checkLabelName(l string) bool {
-	return model.LabelName(l).IsValid() &&
-		!strings.HasPrefix(l, reservedLabelPrefix)
-}

vendor/github.com/prometheus/client_golang/prometheus/doc.go

@@ -26,6 +26,7 @@
 //    package main
 //
 //    import (
+//    	"log"
 //    	"net/http"
 //
 //    	"github.com/prometheus/client_golang/prometheus"
@@ -59,7 +60,7 @@
 //    	// The Handler function provides a default handler to expose metrics
 //    	// via an HTTP server. "/metrics" is the usual endpoint for that.
 //    	http.Handle("/metrics", promhttp.Handler())
-//      log.Fatal(http.ListenAndServe(":8080", nil))
+//    	log.Fatal(http.ListenAndServe(":8080", nil))
 //    }
 //
 //
@@ -69,7 +70,7 @@
 // Metrics
 //
 // The number of exported identifiers in this package might appear a bit
-// overwhelming. Hovever, in addition to the basic plumbing shown in the example
+// overwhelming. However, in addition to the basic plumbing shown in the example
 // above, you only need to understand the different metric types and their
 // vector versions for basic usage.
 //

vendor/github.com/prometheus/client_golang/prometheus/gauge.go

@@ -63,12 +63,11 @@ func NewGauge(opts GaugeOpts) Gauge {
 // (e.g. number of operations queued, partitioned by user and operation
 // type). Create instances with NewGaugeVec.
 type GaugeVec struct {
-	*MetricVec
+	*metricVec
 }
 
 // NewGaugeVec creates a new GaugeVec based on the provided GaugeOpts and
-// partitioned by the given label names. At least one label name must be
-// provided.
+// partitioned by the given label names.
 func NewGaugeVec(opts GaugeOpts, labelNames []string) *GaugeVec {
 	desc := NewDesc(
 		BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
@@ -77,28 +76,57 @@ func NewGaugeVec(opts GaugeOpts, labelNames []string) *GaugeVec {
 		opts.ConstLabels,
 	)
 	return &GaugeVec{
-		MetricVec: newMetricVec(desc, func(lvs ...string) Metric {
+		metricVec: newMetricVec(desc, func(lvs ...string) Metric {
 			return newValue(desc, GaugeValue, 0, lvs...)
 		}),
 	}
 }
 
-// GetMetricWithLabelValues replaces the method of the same name in
-// MetricVec. The difference is that this method returns a Gauge and not a
-// Metric so that no type conversion is required.
+// GetMetricWithLabelValues returns the Gauge for the given slice of label
+// values (same order as the VariableLabels in Desc). If that combination of
+// label values is accessed for the first time, a new Gauge is created.
+//
+// It is possible to call this method without using the returned Gauge to only
+// create the new Gauge but leave it at its starting value 0. See also the
+// SummaryVec example.
+//
+// Keeping the Gauge for later use is possible (and should be considered if
+// performance is critical), but keep in mind that Reset, DeleteLabelValues and
+// Delete can be used to delete the Gauge from the GaugeVec. In that case, the
+// Gauge will still exist, but it will not be exported anymore, even if a
+// Gauge with the same label values is created later. See also the CounterVec
+// example.
+//
+// An error is returned if the number of label values is not the same as the
+// number of VariableLabels in Desc.
+//
+// Note that for more than one label value, this method is prone to mistakes
+// caused by an incorrect order of arguments. Consider GetMetricWith(Labels) as
+// an alternative to avoid that type of mistake. For higher label numbers, the
+// latter has a much more readable (albeit more verbose) syntax, but it comes
+// with a performance overhead (for creating and processing the Labels map).
 func (m *GaugeVec) GetMetricWithLabelValues(lvs ...string) (Gauge, error) {
-	metric, err := m.MetricVec.GetMetricWithLabelValues(lvs...)
+	metric, err := m.metricVec.getMetricWithLabelValues(lvs...)
 	if metric != nil {
 		return metric.(Gauge), err
 	}
 	return nil, err
 }
 
-// GetMetricWith replaces the method of the same name in MetricVec. The
-// difference is that this method returns a Gauge and not a Metric so that no
-// type conversion is required.
+// GetMetricWith returns the Gauge for the given Labels map (the label names
+// must match those of the VariableLabels in Desc). If that label map is
+// accessed for the first time, a new Gauge is created. Implications of
+// creating a Gauge without using it and keeping the Gauge for later use are
+// the same as for GetMetricWithLabelValues.
+//
+// An error is returned if the number and names of the Labels are inconsistent
+// with those of the VariableLabels in Desc.
+//
+// This method is used for the same purpose as
+// GetMetricWithLabelValues(...string). See there for pros and cons of the two
+// methods.
 func (m *GaugeVec) GetMetricWith(labels Labels) (Gauge, error) {
-	metric, err := m.MetricVec.GetMetricWith(labels)
+	metric, err := m.metricVec.getMetricWith(labels)
 	if metric != nil {
 		return metric.(Gauge), err
 	}
@@ -110,14 +138,14 @@ func (m *GaugeVec) GetMetricWith(labels Labels) (Gauge, error) {
 // error, WithLabelValues allows shortcuts like
 //     myVec.WithLabelValues("404", "GET").Add(42)
 func (m *GaugeVec) WithLabelValues(lvs ...string) Gauge {
-	return m.MetricVec.WithLabelValues(lvs...).(Gauge)
+	return m.metricVec.withLabelValues(lvs...).(Gauge)
 }
 
 // With works as GetMetricWith, but panics where GetMetricWithLabels would have
 // returned an error. By not returning an error, With allows shortcuts like
 //     myVec.With(Labels{"code": "404", "method": "GET"}).Add(42)
 func (m *GaugeVec) With(labels Labels) Gauge {
-	return m.MetricVec.With(labels).(Gauge)
+	return m.metricVec.with(labels).(Gauge)
 }
 
 // GaugeFunc is a Gauge whose value is determined at collect time by calling a

vendor/github.com/prometheus/client_golang/prometheus/go_collector.go

@@ -11,6 +11,7 @@ type goCollector struct {
 	goroutinesDesc *Desc
 	threadsDesc    *Desc
 	gcDesc         *Desc
+	goInfoDesc     *Desc
 
 	// metrics to describe and collect
 	metrics memStatsMetrics
@@ -26,12 +27,16 @@ func NewGoCollector() Collector {
 			nil, nil),
 		threadsDesc: NewDesc(
 			"go_threads",
-			"Number of OS threads created",
+			"Number of OS threads created.",
 			nil, nil),
 		gcDesc: NewDesc(
 			"go_gc_duration_seconds",
 			"A summary of the GC invocation durations.",
 			nil, nil),
+		goInfoDesc: NewDesc(
+			"go_info",
+			"Information about the Go environment.",
+			nil, Labels{"version": runtime.Version()}),
 		metrics: memStatsMetrics{
 			{
 				desc: NewDesc(
@@ -217,6 +222,14 @@ func NewGoCollector() Collector {
 				),
 				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.LastGC) / 1e9 },
 				valType: GaugeValue,
+			}, {
+				desc: NewDesc(
+					memstatNamespace("gc_cpu_fraction"),
+					"The fraction of this program's available CPU time used by the GC since the program started.",
+					nil, nil,
+				),
+				eval:    func(ms *runtime.MemStats) float64 { return ms.GCCPUFraction },
+				valType: GaugeValue,
 			},
 		},
 	}
@@ -231,6 +244,7 @@ func (c *goCollector) Describe(ch chan<- *Desc) {
 	ch <- c.goroutinesDesc
 	ch <- c.threadsDesc
 	ch <- c.gcDesc
+	ch <- c.goInfoDesc
 	for _, i := range c.metrics {
 		ch <- i.desc
 	}
@@ -253,6 +267,8 @@ func (c *goCollector) Collect(ch chan<- Metric) {
 	quantiles[0.0] = stats.PauseQuantiles[0].Seconds()
 	ch <- MustNewConstSummary(c.gcDesc, uint64(stats.NumGC), float64(stats.PauseTotal.Seconds()), quantiles)
 
+	ch <- MustNewConstMetric(c.goInfoDesc, GaugeValue, 1)
+
 	ms := &runtime.MemStats{}
 	runtime.ReadMemStats(ms)
 	for _, i := range c.metrics {

vendor/github.com/prometheus/client_golang/prometheus/histogram.go

@@ -287,12 +287,11 @@ func (h *histogram) Write(out *dto.Metric) error {
 // (e.g. HTTP request latencies, partitioned by status code and method). Create
 // instances with NewHistogramVec.
 type HistogramVec struct {
-	*MetricVec
+	*metricVec
 }
 
 // NewHistogramVec creates a new HistogramVec based on the provided HistogramOpts and
-// partitioned by the given label names. At least one label name must be
-// provided.
+// partitioned by the given label names.
 func NewHistogramVec(opts HistogramOpts, labelNames []string) *HistogramVec {
 	desc := NewDesc(
 		BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
@@ -301,30 +300,60 @@ func NewHistogramVec(opts HistogramOpts, labelNames []string) *HistogramVec {
 		opts.ConstLabels,
 	)
 	return &HistogramVec{
-		MetricVec: newMetricVec(desc, func(lvs ...string) Metric {
+		metricVec: newMetricVec(desc, func(lvs ...string) Metric {
 			return newHistogram(desc, opts, lvs...)
 		}),
 	}
 }
 
-// GetMetricWithLabelValues replaces the method of the same name in
-// MetricVec. The difference is that this method returns a Histogram and not a
-// Metric so that no type conversion is required.
-func (m *HistogramVec) GetMetricWithLabelValues(lvs ...string) (Histogram, error) {
-	metric, err := m.MetricVec.GetMetricWithLabelValues(lvs...)
+// GetMetricWithLabelValues returns the Histogram for the given slice of label
+// values (same order as the VariableLabels in Desc). If that combination of
+// label values is accessed for the first time, a new Histogram is created.
+//
+// It is possible to call this method without using the returned Histogram to only
+// create the new Histogram but leave it at its starting value, a Histogram without
+// any observations.
+//
+// Keeping the Histogram for later use is possible (and should be considered if
+// performance is critical), but keep in mind that Reset, DeleteLabelValues and
+// Delete can be used to delete the Histogram from the HistogramVec. In that case, the
+// Histogram will still exist, but it will not be exported anymore, even if a
+// Histogram with the same label values is created later. See also the CounterVec
+// example.
+//
+// An error is returned if the number of label values is not the same as the
+// number of VariableLabels in Desc.
+//
+// Note that for more than one label value, this method is prone to mistakes
+// caused by an incorrect order of arguments. Consider GetMetricWith(Labels) as
+// an alternative to avoid that type of mistake. For higher label numbers, the
+// latter has a much more readable (albeit more verbose) syntax, but it comes
+// with a performance overhead (for creating and processing the Labels map).
+// See also the GaugeVec example.
+func (m *HistogramVec) GetMetricWithLabelValues(lvs ...string) (Observer, error) {
+	metric, err := m.metricVec.getMetricWithLabelValues(lvs...)
 	if metric != nil {
-		return metric.(Histogram), err
+		return metric.(Observer), err
 	}
 	return nil, err
 }
 
-// GetMetricWith replaces the method of the same name in MetricVec. The
-// difference is that this method returns a Histogram and not a Metric so that no
-// type conversion is required.
-func (m *HistogramVec) GetMetricWith(labels Labels) (Histogram, error) {
-	metric, err := m.MetricVec.GetMetricWith(labels)
+// GetMetricWith returns the Histogram for the given Labels map (the label names
+// must match those of the VariableLabels in Desc). If that label map is
+// accessed for the first time, a new Histogram is created. Implications of
+// creating a Histogram without using it and keeping the Histogram for later use
+// are the same as for GetMetricWithLabelValues.
+//
+// An error is returned if the number and names of the Labels are inconsistent
+// with those of the VariableLabels in Desc.
+//
+// This method is used for the same purpose as
+// GetMetricWithLabelValues(...string). See there for pros and cons of the two
+// methods.
+func (m *HistogramVec) GetMetricWith(labels Labels) (Observer, error) {
+	metric, err := m.metricVec.getMetricWith(labels)
 	if metric != nil {
-		return metric.(Histogram), err
+		return metric.(Observer), err
 	}
 	return nil, err
 }
@@ -333,15 +362,15 @@ func (m *HistogramVec) GetMetricWith(labels Labels) (Histogram, error) {
 // GetMetricWithLabelValues would have returned an error. By not returning an
 // error, WithLabelValues allows shortcuts like
 //     myVec.WithLabelValues("404", "GET").Observe(42.21)
-func (m *HistogramVec) WithLabelValues(lvs ...string) Histogram {
-	return m.MetricVec.WithLabelValues(lvs...).(Histogram)
+func (m *HistogramVec) WithLabelValues(lvs ...string) Observer {
+	return m.metricVec.withLabelValues(lvs...).(Observer)
 }
 
 // With works as GetMetricWith, but panics where GetMetricWithLabels would have
 // returned an error. By not returning an error, With allows shortcuts like
 //     myVec.With(Labels{"code": "404", "method": "GET"}).Observe(42.21)
-func (m *HistogramVec) With(labels Labels) Histogram {
-	return m.MetricVec.With(labels).(Histogram)
+func (m *HistogramVec) With(labels Labels) Observer {
+	return m.metricVec.with(labels).(Observer)
 }
 
 type constHistogram struct {
@@ -401,8 +430,8 @@ func NewConstHistogram(
 	buckets map[float64]uint64,
 	labelValues ...string,
 ) (Metric, error) {
-	if len(desc.variableLabels) != len(labelValues) {
-		return nil, errInconsistentCardinality
+	if err := validateLabelValues(labelValues, len(desc.variableLabels)); err != nil {
+		return nil, err
 	}
 	return &constHistogram{
 		desc:       desc,

vendor/github.com/prometheus/client_golang/prometheus/http.go

@@ -62,7 +62,8 @@ func giveBuf(buf *bytes.Buffer) {
 //
 // Deprecated: Please note the issues described in the doc comment of
 // InstrumentHandler. You might want to consider using promhttp.Handler instead
-// (which is not instrumented).
+// (which is not instrumented, but can be instrumented with the tooling provided
+// in package promhttp).
 func Handler() http.Handler {
 	return InstrumentHandler("prometheus", UninstrumentedHandler())
 }
@@ -95,7 +96,7 @@ func UninstrumentedHandler() http.Handler {
 			closer.Close()
 		}
 		if lastErr != nil && buf.Len() == 0 {
-			http.Error(w, "No metrics encoded, last error:\n\n"+err.Error(), http.StatusInternalServerError)
+			http.Error(w, "No metrics encoded, last error:\n\n"+lastErr.Error(), http.StatusInternalServerError)
 			return
 		}
 		header := w.Header()
@@ -158,7 +159,8 @@ func nowSeries(t ...time.Time) nower {
 // value. http_requests_total is a metric vector partitioned by HTTP method
 // (label name "method") and HTTP status code (label name "code").
 //
-// Deprecated: InstrumentHandler has several issues:
+// Deprecated: InstrumentHandler has several issues. Use the tooling provided in
+// package promhttp instead. The issues are the following:
 //
 // - It uses Summaries rather than Histograms. Summaries are not useful if
 // aggregation across multiple instances is required.
@@ -174,10 +176,6 @@ func nowSeries(t ...time.Time) nower {
 //
 // - It has additional issues with HTTP/2, cf.
 // https://github.com/prometheus/client_golang/issues/272.
-//
-// Upcoming versions of this package will provide ways of instrumenting HTTP
-// handlers that are more flexible and have fewer issues. Please prefer direct
-// instrumentation in the meantime.
 func InstrumentHandler(handlerName string, handler http.Handler) http.HandlerFunc {
 	return InstrumentHandlerFunc(handlerName, handler.ServeHTTP)
 }
@@ -187,7 +185,7 @@ func InstrumentHandler(handlerName string, handler http.Handler) http.HandlerFun
 // issues).
 //
 // Deprecated: InstrumentHandlerFunc is deprecated for the same reasons as
-// InstrumentHandler is.
+// InstrumentHandler is. Use the tooling provided in package promhttp instead.
 func InstrumentHandlerFunc(handlerName string, handlerFunc func(http.ResponseWriter, *http.Request)) http.HandlerFunc {
 	return InstrumentHandlerFuncWithOpts(
 		SummaryOpts{
@@ -226,7 +224,7 @@ func InstrumentHandlerFunc(handlerName string, handlerFunc func(http.ResponseWri
 // SummaryOpts.
 //
 // Deprecated: InstrumentHandlerWithOpts is deprecated for the same reasons as
-// InstrumentHandler is.
+// InstrumentHandler is. Use the tooling provided in package promhttp instead.
 func InstrumentHandlerWithOpts(opts SummaryOpts, handler http.Handler) http.HandlerFunc {
 	return InstrumentHandlerFuncWithOpts(opts, handler.ServeHTTP)
 }
@@ -237,7 +235,7 @@ func InstrumentHandlerWithOpts(opts SummaryOpts, handler http.Handler) http.Hand
 // SummaryOpts are used.
 //
 // Deprecated: InstrumentHandlerFuncWithOpts is deprecated for the same reasons
-// as InstrumentHandler is.
+// as InstrumentHandler is. Use the tooling provided in package promhttp instead.
 func InstrumentHandlerFuncWithOpts(opts SummaryOpts, handlerFunc func(http.ResponseWriter, *http.Request)) http.HandlerFunc {
 	reqCnt := NewCounterVec(
 		CounterOpts{

vendor/github.com/prometheus/client_golang/prometheus/labels.go

@@ -0,0 +1,57 @@
+package prometheus
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+	"unicode/utf8"
+
+	"github.com/prometheus/common/model"
+)
+
+// Labels represents a collection of label name -> value mappings. This type is
+// commonly used with the With(Labels) and GetMetricWith(Labels) methods of
+// metric vector Collectors, e.g.:
+//     myVec.With(Labels{"code": "404", "method": "GET"}).Add(42)
+//
+// The other use-case is the specification of constant label pairs in Opts or to
+// create a Desc.
+type Labels map[string]string
+
+// reservedLabelPrefix is a prefix which is not legal in user-supplied
+// label names.
+const reservedLabelPrefix = "__"
+
+var errInconsistentCardinality = errors.New("inconsistent label cardinality")
+
+func validateValuesInLabels(labels Labels, expectedNumberOfValues int) error {
+	if len(labels) != expectedNumberOfValues {
+		return errInconsistentCardinality
+	}
+
+	for name, val := range labels {
+		if !utf8.ValidString(val) {
+			return fmt.Errorf("label %s: value %q is not valid UTF-8", name, val)
+		}
+	}
+
+	return nil
+}
+
+func validateLabelValues(vals []string, expectedNumberOfValues int) error {
+	if len(vals) != expectedNumberOfValues {
+		return errInconsistentCardinality
+	}
+
+	for _, val := range vals {
+		if !utf8.ValidString(val) {
+			return fmt.Errorf("label value %q is not valid UTF-8", val)
+		}
+	}
+
+	return nil
+}
+
+func checkLabelName(l string) bool {
+	return model.LabelName(l).IsValid() && !strings.HasPrefix(l, reservedLabelPrefix)
+}

vendor/github.com/prometheus/client_golang/prometheus/observer.go

@@ -0,0 +1,50 @@
+// Copyright 2017 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package prometheus
+
+// Observer is the interface that wraps the Observe method, which is used by
+// Histogram and Summary to add observations.
+type Observer interface {
+	Observe(float64)
+}
+
+// The ObserverFunc type is an adapter to allow the use of ordinary
+// functions as Observers. If f is a function with the appropriate
+// signature, ObserverFunc(f) is an Observer that calls f.
+//
+// This adapter is usually used in connection with the Timer type, and there are
+// two general use cases:
+//
+// The most common one is to use a Gauge as the Observer for a Timer.
+// See the "Gauge" Timer example.
+//
+// The more advanced use case is to create a function that dynamically decides
+// which Observer to use for observing the duration. See the "Complex" Timer
+// example.
+type ObserverFunc func(float64)
+
+// Observe calls f(value). It implements Observer.
+func (f ObserverFunc) Observe(value float64) {
+	f(value)
+}
+
+// ObserverVec is an interface implemented by `HistogramVec` and `SummaryVec`.
+type ObserverVec interface {
+	GetMetricWith(Labels) (Observer, error)
+	GetMetricWithLabelValues(lvs ...string) (Observer, error)
+	With(Labels) Observer
+	WithLabelValues(...string) Observer
+
+	Collector
+}

vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator.go

@@ -0,0 +1,199 @@
+// Copyright 2017 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package promhttp
+
+import (
+	"bufio"
+	"io"
+	"net"
+	"net/http"
+)
+
+const (
+	closeNotifier = 1 << iota
+	flusher
+	hijacker
+	readerFrom
+	pusher
+)
+
+type delegator interface {
+	http.ResponseWriter
+
+	Status() int
+	Written() int64
+}
+
+type responseWriterDelegator struct {
+	http.ResponseWriter
+
+	handler, method    string
+	status             int
+	written            int64
+	wroteHeader        bool
+	observeWriteHeader func(int)
+}
+
+func (r *responseWriterDelegator) Status() int {
+	return r.status
+}
+
+func (r *responseWriterDelegator) Written() int64 {
+	return r.written
+}
+
+func (r *responseWriterDelegator) WriteHeader(code int) {
+	r.status = code
+	r.wroteHeader = true
+	r.ResponseWriter.WriteHeader(code)
+	if r.observeWriteHeader != nil {
+		r.observeWriteHeader(code)
+	}
+}
+
+func (r *responseWriterDelegator) Write(b []byte) (int, error) {
+	if !r.wroteHeader {
+		r.WriteHeader(http.StatusOK)
+	}
+	n, err := r.ResponseWriter.Write(b)
+	r.written += int64(n)
+	return n, err
+}
+
+type closeNotifierDelegator struct{ *responseWriterDelegator }
+type flusherDelegator struct{ *responseWriterDelegator }
+type hijackerDelegator struct{ *responseWriterDelegator }
+type readerFromDelegator struct{ *responseWriterDelegator }
+
+func (d *closeNotifierDelegator) CloseNotify() <-chan bool {
+	return d.ResponseWriter.(http.CloseNotifier).CloseNotify()
+}
+func (d *flusherDelegator) Flush() {
+	d.ResponseWriter.(http.Flusher).Flush()
+}
+func (d *hijackerDelegator) Hijack() (net.Conn, *bufio.ReadWriter, error) {
+	return d.ResponseWriter.(http.Hijacker).Hijack()
+}
+func (d *readerFromDelegator) ReadFrom(re io.Reader) (int64, error) {
+	if !d.wroteHeader {
+		d.WriteHeader(http.StatusOK)
+	}
+	n, err := d.ResponseWriter.(io.ReaderFrom).ReadFrom(re)
+	d.written += n
+	return n, err
+}
+
+var pickDelegator = make([]func(*responseWriterDelegator) delegator, 32)
+
+func init() {
+	// TODO(beorn7): Code generation would help here.
+	pickDelegator[0] = func(d *responseWriterDelegator) delegator { // 0
+		return d
+	}
+	pickDelegator[closeNotifier] = func(d *responseWriterDelegator) delegator { // 1
+		return closeNotifierDelegator{d}
+	}
+	pickDelegator[flusher] = func(d *responseWriterDelegator) delegator { // 2
+		return flusherDelegator{d}
+	}
+	pickDelegator[flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 3
+		return struct {
+			*responseWriterDelegator
+			http.Flusher
+			http.CloseNotifier
+		}{d, &flusherDelegator{d}, &closeNotifierDelegator{d}}
+	}
+	pickDelegator[hijacker] = func(d *responseWriterDelegator) delegator { // 4
+		return hijackerDelegator{d}
+	}
+	pickDelegator[hijacker+closeNotifier] = func(d *responseWriterDelegator) delegator { // 5
+		return struct {
+			*responseWriterDelegator
+			http.Hijacker
+			http.CloseNotifier
+		}{d, &hijackerDelegator{d}, &closeNotifierDelegator{d}}
+	}
+	pickDelegator[hijacker+flusher] = func(d *responseWriterDelegator) delegator { // 6
+		return struct {
+			*responseWriterDelegator
+			http.Hijacker
+			http.Flusher
+		}{d, &hijackerDelegator{d}, &flusherDelegator{d}}
+	}
+	pickDelegator[hijacker+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 7
+		return struct {
+			*responseWriterDelegator
+			http.Hijacker
+			http.Flusher
+			http.CloseNotifier
+		}{d, &hijackerDelegator{d}, &flusherDelegator{d}, &closeNotifierDelegator{d}}
+	}
+	pickDelegator[readerFrom] = func(d *responseWriterDelegator) delegator { // 8
+		return readerFromDelegator{d}
+	}
+	pickDelegator[readerFrom+closeNotifier] = func(d *responseWriterDelegator) delegator { // 9
+		return struct {
+			*responseWriterDelegator
+			io.ReaderFrom
+			http.CloseNotifier
+		}{d, &readerFromDelegator{d}, &closeNotifierDelegator{d}}
+	}
+	pickDelegator[readerFrom+flusher] = func(d *responseWriterDelegator) delegator { // 10
+		return struct {
+			*responseWriterDelegator
+			io.ReaderFrom
+			http.Flusher
+		}{d, &readerFromDelegator{d}, &flusherDelegator{d}}
+	}
+	pickDelegator[readerFrom+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 11
+		return struct {
+			*responseWriterDelegator
+			io.ReaderFrom
+			http.Flusher
+			http.CloseNotifier
+		}{d, &readerFromDelegator{d}, &flusherDelegator{d}, &closeNotifierDelegator{d}}
+	}
+	pickDelegator[readerFrom+hijacker] = func(d *responseWriterDelegator) delegator { // 12
+		return struct {
+			*responseWriterDelegator
+			io.ReaderFrom
+			http.Hijacker
+		}{d, &readerFromDelegator{d}, &hijackerDelegator{d}}
+	}
+	pickDelegator[readerFrom+hijacker+closeNotifier] = func(d *responseWriterDelegator) delegator { // 13
+		return struct {
+			*responseWriterDelegator
+			io.ReaderFrom
+			http.Hijacker
+			http.CloseNotifier
+		}{d, &readerFromDelegator{d}, &hijackerDelegator{d}, &closeNotifierDelegator{d}}
+	}
+	pickDelegator[readerFrom+hijacker+flusher] = func(d *responseWriterDelegator) delegator { // 14
+		return struct {
+			*responseWriterDelegator
+			io.ReaderFrom
+			http.Hijacker
+			http.Flusher
+		}{d, &readerFromDelegator{d}, &hijackerDelegator{d}, &flusherDelegator{d}}
+	}
+	pickDelegator[readerFrom+hijacker+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 15
+		return struct {
+			*responseWriterDelegator
+			io.ReaderFrom
+			http.Hijacker
+			http.Flusher
+			http.CloseNotifier
+		}{d, &readerFromDelegator{d}, &hijackerDelegator{d}, &flusherDelegator{d}, &closeNotifierDelegator{d}}
+	}
+}

vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator_1_8.go

@@ -0,0 +1,181 @@
+// Copyright 2017 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build go1.8
+
+package promhttp
+
+import (
+	"io"
+	"net/http"
+)
+
+type pusherDelegator struct{ *responseWriterDelegator }
+
+func (d *pusherDelegator) Push(target string, opts *http.PushOptions) error {
+	return d.ResponseWriter.(http.Pusher).Push(target, opts)
+}
+
+func init() {
+	pickDelegator[pusher] = func(d *responseWriterDelegator) delegator { // 16
+		return pusherDelegator{d}
+	}
+	pickDelegator[pusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 17
+		return struct {
+			*responseWriterDelegator
+			http.Pusher
+			http.CloseNotifier
+		}{d, &pusherDelegator{d}, &closeNotifierDelegator{d}}
+	}
+	pickDelegator[pusher+flusher] = func(d *responseWriterDelegator) delegator { // 18
+		return struct {
+			*responseWriterDelegator
+			http.Pusher
+			http.Flusher
+		}{d, &pusherDelegator{d}, &flusherDelegator{d}}
+	}
+	pickDelegator[pusher+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 19
+		return struct {
+			*responseWriterDelegator
+			http.Pusher
+			http.Flusher
+			http.CloseNotifier
+		}{d, &pusherDelegator{d}, &flusherDelegator{d}, &closeNotifierDelegator{d}}
+	}
+	pickDelegator[pusher+hijacker] = func(d *responseWriterDelegator) delegator { // 20
+		return struct {
+			*responseWriterDelegator
+			http.Pusher
+			http.Hijacker
+		}{d, &pusherDelegator{d}, &hijackerDelegator{d}}
+	}
+	pickDelegator[pusher+hijacker+closeNotifier] = func(d *responseWriterDelegator) delegator { // 21
+		return struct {
+			*responseWriterDelegator
+			http.Pusher
+			http.Hijacker
+			http.CloseNotifier
+		}{d, &pusherDelegator{d}, &hijackerDelegator{d}, &closeNotifierDelegator{d}}
+	}
+	pickDelegator[pusher+hijacker+flusher] = func(d *responseWriterDelegator) delegator { // 22
+		return struct {
+			*responseWriterDelegator
+			http.Pusher
+			http.Hijacker
+			http.Flusher
+		}{d, &pusherDelegator{d}, &hijackerDelegator{d}, &flusherDelegator{d}}
+	}
+	pickDelegator[pusher+hijacker+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { //23
+		return struct {
+			*responseWriterDelegator
+			http.Pusher
+			http.Hijacker
+			http.Flusher
+			http.CloseNotifier
+		}{d, &pusherDelegator{d}, &hijackerDelegator{d}, &flusherDelegator{d}, &closeNotifierDelegator{d}}
+	}
+	pickDelegator[pusher+readerFrom] = func(d *responseWriterDelegator) delegator { // 24
+		return struct {
+			*responseWriterDelegator
+			http.Pusher
+			io.ReaderFrom
+		}{d, &pusherDelegator{d}, &readerFromDelegator{d}}
+	}
+	pickDelegator[pusher+readerFrom+closeNotifier] = func(d *responseWriterDelegator) delegator { // 25
+		return struct {
+			*responseWriterDelegator
+			http.Pusher
+			io.ReaderFrom
+			http.CloseNotifier
+		}{d, &pusherDelegator{d}, &readerFromDelegator{d}, &closeNotifierDelegator{d}}
+	}
+	pickDelegator[pusher+readerFrom+flusher] = func(d *responseWriterDelegator) delegator { // 26
+		return struct {
+			*responseWriterDelegator
+			http.Pusher
+			io.ReaderFrom
+			http.Flusher
+		}{d, &pusherDelegator{d}, &readerFromDelegator{d}, &flusherDelegator{d}}
+	}
+	pickDelegator[pusher+readerFrom+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 27
+		return struct {
+			*responseWriterDelegator
+			http.Pusher
+			io.ReaderFrom
+			http.Flusher
+			http.CloseNotifier
+		}{d, &pusherDelegator{d}, &readerFromDelegator{d}, &flusherDelegator{d}, &closeNotifierDelegator{d}}
+	}
+	pickDelegator[pusher+readerFrom+hijacker] = func(d *responseWriterDelegator) delegator { // 28
+		return struct {
+			*responseWriterDelegator
+			http.Pusher
+			io.ReaderFrom
+			http.Hijacker
+		}{d, &pusherDelegator{d}, &readerFromDelegator{d}, &hijackerDelegator{d}}
+	}
+	pickDelegator[pusher+readerFrom+hijacker+closeNotifier] = func(d *responseWriterDelegator) delegator { // 29
+		return struct {
+			*responseWriterDelegator
+			http.Pusher
+			io.ReaderFrom
+			http.Hijacker
+			http.CloseNotifier
+		}{d, &pusherDelegator{d}, &readerFromDelegator{d}, &hijackerDelegator{d}, &closeNotifierDelegator{d}}
+	}
+	pickDelegator[pusher+readerFrom+hijacker+flusher] = func(d *responseWriterDelegator) delegator { // 30
+		return struct {
+			*responseWriterDelegator
+			http.Pusher
+			io.ReaderFrom
+			http.Hijacker
+			http.Flusher
+		}{d, &pusherDelegator{d}, &readerFromDelegator{d}, &hijackerDelegator{d}, &flusherDelegator{d}}
+	}
+	pickDelegator[pusher+readerFrom+hijacker+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 31
+		return struct {
+			*responseWriterDelegator
+			http.Pusher
+			io.ReaderFrom
+			http.Hijacker
+			http.Flusher
+			http.CloseNotifier
+		}{d, &pusherDelegator{d}, &readerFromDelegator{d}, &hijackerDelegator{d}, &flusherDelegator{d}, &closeNotifierDelegator{d}}
+	}
+}
+
+func newDelegator(w http.ResponseWriter, observeWriteHeaderFunc func(int)) delegator {
+	d := &responseWriterDelegator{
+		ResponseWriter:     w,
+		observeWriteHeader: observeWriteHeaderFunc,
+	}
+
+	id := 0
+	if _, ok := w.(http.CloseNotifier); ok {
+		id += closeNotifier
+	}
+	if _, ok := w.(http.Flusher); ok {
+		id += flusher
+	}
+	if _, ok := w.(http.Hijacker); ok {
+		id += hijacker
+	}
+	if _, ok := w.(io.ReaderFrom); ok {
+		id += readerFrom
+	}
+	if _, ok := w.(http.Pusher); ok {
+		id += pusher
+	}
+
+	return pickDelegator[id](d)
+}

vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator_pre_1_8.go

@@ -0,0 +1,44 @@
+// Copyright 2017 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build !go1.8
+
+package promhttp
+
+import (
+	"io"
+	"net/http"
+)
+
+func newDelegator(w http.ResponseWriter, observeWriteHeaderFunc func(int)) delegator {
+	d := &responseWriterDelegator{
+		ResponseWriter:     w,
+		observeWriteHeader: observeWriteHeaderFunc,
+	}
+
+	id := 0
+	if _, ok := w.(http.CloseNotifier); ok {
+		id += closeNotifier
+	}
+	if _, ok := w.(http.Flusher); ok {
+		id += flusher
+	}
+	if _, ok := w.(http.Hijacker); ok {
+		id += hijacker
+	}
+	if _, ok := w.(io.ReaderFrom); ok {
+		id += readerFrom
+	}
+
+	return pickDelegator[id](d)
+}

vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go

@@ -11,21 +11,24 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// Copyright (c) 2013, The Prometheus Authors
-// All rights reserved.
+// Package promhttp provides tooling around HTTP servers and clients.
 //
-// Use of this source code is governed by a BSD-style license that can be found
-// in the LICENSE file.
-
-// Package promhttp contains functions to create http.Handler instances to
-// expose Prometheus metrics via HTTP. In later versions of this package, it
-// will also contain tooling to instrument instances of http.Handler and
-// http.RoundTripper.
+// First, the package allows the creation of http.Handler instances to expose
+// Prometheus metrics via HTTP. promhttp.Handler acts on the
+// prometheus.DefaultGatherer. With HandlerFor, you can create a handler for a
+// custom registry or anything that implements the Gatherer interface. It also
+// allows the creation of handlers that act differently on errors or allow to
+// log errors.
 //
-// promhttp.Handler acts on the prometheus.DefaultGatherer. With HandlerFor,
-// you can create a handler for a custom registry or anything that implements
-// the Gatherer interface. It also allows to create handlers that act
-// differently on errors or allow to log errors.
+// Second, the package provides tooling to instrument instances of http.Handler
+// via middleware. Middleware wrappers follow the naming scheme
+// InstrumentHandlerX, where X describes the intended use of the middleware.
+// See each function's doc comment for specific details.
+//
+// Finally, the package allows for an http.RoundTripper to be instrumented via
+// middleware. Middleware wrappers follow the naming scheme
+// InstrumentRoundTripperX, where X describes the intended use of the
+// middleware. See each function's doc comment for specific details.
 package promhttp
 
 import (
@@ -125,7 +128,7 @@ func HandlerFor(reg prometheus.Gatherer, opts HandlerOpts) http.Handler {
 			closer.Close()
 		}
 		if lastErr != nil && buf.Len() == 0 {
-			http.Error(w, "No metrics encoded, last error:\n\n"+err.Error(), http.StatusInternalServerError)
+			http.Error(w, "No metrics encoded, last error:\n\n"+lastErr.Error(), http.StatusInternalServerError)
 			return
 		}
 		header := w.Header()

vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_client.go

@@ -0,0 +1,98 @@
+// Copyright 2017 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package promhttp
+
+import (
+	"net/http"
+	"time"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+// The RoundTripperFunc type is an adapter to allow the use of ordinary
+// functions as RoundTrippers. If f is a function with the appropriate
+// signature, RountTripperFunc(f) is a RoundTripper that calls f.
+type RoundTripperFunc func(req *http.Request) (*http.Response, error)
+
+// RoundTrip implements the RoundTripper interface.
+func (rt RoundTripperFunc) RoundTrip(r *http.Request) (*http.Response, error) {
+	return rt(r)
+}
+
+// InstrumentRoundTripperInFlight is a middleware that wraps the provided
+// http.RoundTripper. It sets the provided prometheus.Gauge to the number of
+// requests currently handled by the wrapped http.RoundTripper.
+//
+// See the example for ExampleInstrumentRoundTripperDuration for example usage.
+func InstrumentRoundTripperInFlight(gauge prometheus.Gauge, next http.RoundTripper) RoundTripperFunc {
+	return RoundTripperFunc(func(r *http.Request) (*http.Response, error) {
+		gauge.Inc()
+		defer gauge.Dec()
+		return next.RoundTrip(r)
+	})
+}
+
+// InstrumentRoundTripperCounter is a middleware that wraps the provided
+// http.RoundTripper to observe the request result with the provided CounterVec.
+// The CounterVec must have zero, one, or two labels. The only allowed label
+// names are "code" and "method". The function panics if any other instance
+// labels are provided. Partitioning of the CounterVec happens by HTTP status
+// code and/or HTTP method if the respective instance label names are present
+// in the CounterVec. For unpartitioned counting, use a CounterVec with
+// zero labels.
+//
+// If the wrapped RoundTripper panics or returns a non-nil error, the Counter
+// is not incremented.
+//
+// See the example for ExampleInstrumentRoundTripperDuration for example usage.
+func InstrumentRoundTripperCounter(counter *prometheus.CounterVec, next http.RoundTripper) RoundTripperFunc {
+	code, method := checkLabels(counter)
+
+	return RoundTripperFunc(func(r *http.Request) (*http.Response, error) {
+		resp, err := next.RoundTrip(r)
+		if err == nil {
+			counter.With(labels(code, method, r.Method, resp.StatusCode)).Inc()
+		}
+		return resp, err
+	})
+}
+
+// InstrumentRoundTripperDuration is a middleware that wraps the provided
+// http.RoundTripper to observe the request duration with the provided ObserverVec.
+// The ObserverVec must have zero, one, or two labels. The only allowed label
+// names are "code" and "method". The function panics if any other instance
+// labels are provided. The Observe method of the Observer in the ObserverVec
+// is called with the request duration in seconds. Partitioning happens by HTTP
+// status code and/or HTTP method if the respective instance label names are
+// present in the ObserverVec. For unpartitioned observations, use an
+// ObserverVec with zero labels. Note that partitioning of Histograms is
+// expensive and should be used judiciously.
+//
+// If the wrapped RoundTripper panics or returns a non-nil error, no values are
+// reported.
+//
+// Note that this method is only guaranteed to never observe negative durations
+// if used with Go1.9+.
+func InstrumentRoundTripperDuration(obs prometheus.ObserverVec, next http.RoundTripper) RoundTripperFunc {
+	code, method := checkLabels(obs)
+
+	return RoundTripperFunc(func(r *http.Request) (*http.Response, error) {
+		start := time.Now()
+		resp, err := next.RoundTrip(r)
+		if err == nil {
+			obs.With(labels(code, method, r.Method, resp.StatusCode)).Observe(time.Since(start).Seconds())
+		}
+		return resp, err
+	})
+}

vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_client_1_8.go

@@ -0,0 +1,144 @@
+// Copyright 2017 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build go1.8
+
+package promhttp
+
+import (
+	"context"
+	"crypto/tls"
+	"net/http"
+	"net/http/httptrace"
+	"time"
+)
+
+// InstrumentTrace is used to offer flexibility in instrumenting the available
+// httptrace.ClientTrace hook functions. Each function is passed a float64
+// representing the time in seconds since the start of the http request. A user
+// may choose to use separately buckets Histograms, or implement custom
+// instance labels on a per function basis.
+type InstrumentTrace struct {
+	GotConn              func(float64)
+	PutIdleConn          func(float64)
+	GotFirstResponseByte func(float64)
+	Got100Continue       func(float64)
+	DNSStart             func(float64)
+	DNSDone              func(float64)
+	ConnectStart         func(float64)
+	ConnectDone          func(float64)
+	TLSHandshakeStart    func(float64)
+	TLSHandshakeDone     func(float64)
+	WroteHeaders         func(float64)
+	Wait100Continue      func(float64)
+	WroteRequest         func(float64)
+}
+
+// InstrumentRoundTripperTrace is a middleware that wraps the provided
+// RoundTripper and reports times to hook functions provided in the
+// InstrumentTrace struct. Hook functions that are not present in the provided
+// InstrumentTrace struct are ignored. Times reported to the hook functions are
+// time since the start of the request. Only with Go1.9+, those times are
+// guaranteed to never be negative. (Earlier Go versions are not using a
+// monotonic clock.) Note that partitioning of Histograms is expensive and
+// should be used judiciously.
+//
+// For hook functions that receive an error as an argument, no observations are
+// made in the event of a non-nil error value.
+//
+// See the example for ExampleInstrumentRoundTripperDuration for example usage.
+func InstrumentRoundTripperTrace(it *InstrumentTrace, next http.RoundTripper) RoundTripperFunc {
+	return RoundTripperFunc(func(r *http.Request) (*http.Response, error) {
+		start := time.Now()
+
+		trace := &httptrace.ClientTrace{
+			GotConn: func(_ httptrace.GotConnInfo) {
+				if it.GotConn != nil {
+					it.GotConn(time.Since(start).Seconds())
+				}
+			},
+			PutIdleConn: func(err error) {
+				if err != nil {
+					return
+				}
+				if it.PutIdleConn != nil {
+					it.PutIdleConn(time.Since(start).Seconds())
+				}
+			},
+			DNSStart: func(_ httptrace.DNSStartInfo) {
+				if it.DNSStart != nil {
+					it.DNSStart(time.Since(start).Seconds())
+				}
+			},
+			DNSDone: func(_ httptrace.DNSDoneInfo) {
+				if it.DNSStart != nil {
+					it.DNSStart(time.Since(start).Seconds())
+				}
+			},
+			ConnectStart: func(_, _ string) {
+				if it.ConnectStart != nil {
+					it.ConnectStart(time.Since(start).Seconds())
+				}
+			},
+			ConnectDone: func(_, _ string, err error) {
+				if err != nil {
+					return
+				}
+				if it.ConnectDone != nil {
+					it.ConnectDone(time.Since(start).Seconds())
+				}
+			},
+			GotFirstResponseByte: func() {
+				if it.GotFirstResponseByte != nil {
+					it.GotFirstResponseByte(time.Since(start).Seconds())
+				}
+			},
+			Got100Continue: func() {
+				if it.Got100Continue != nil {
+					it.Got100Continue(time.Since(start).Seconds())
+				}
+			},
+			TLSHandshakeStart: func() {
+				if it.TLSHandshakeStart != nil {
+					it.TLSHandshakeStart(time.Since(start).Seconds())
+				}
+			},
+			TLSHandshakeDone: func(_ tls.ConnectionState, err error) {
+				if err != nil {
+					return
+				}
+				if it.TLSHandshakeDone != nil {
+					it.TLSHandshakeDone(time.Since(start).Seconds())
+				}
+			},
+			WroteHeaders: func() {
+				if it.WroteHeaders != nil {
+					it.WroteHeaders(time.Since(start).Seconds())
+				}
+			},
+			Wait100Continue: func() {
+				if it.Wait100Continue != nil {
+					it.Wait100Continue(time.Since(start).Seconds())
+				}
+			},
+			WroteRequest: func(_ httptrace.WroteRequestInfo) {
+				if it.WroteRequest != nil {
+					it.WroteRequest(time.Since(start).Seconds())
+				}
+			},
+		}
+		r = r.WithContext(httptrace.WithClientTrace(context.Background(), trace))
+
+		return next.RoundTrip(r)
+	})
+}

vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_server.go

@@ -0,0 +1,440 @@
+// Copyright 2017 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package promhttp
+
+import (
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	dto "github.com/prometheus/client_model/go"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+// magicString is used for the hacky label test in checkLabels. Remove once fixed.
+const magicString = "zZgWfBxLqvG8kc8IMv3POi2Bb0tZI3vAnBx+gBaFi9FyPzB/CzKUer1yufDa"
+
+// InstrumentHandlerInFlight is a middleware that wraps the provided
+// http.Handler. It sets the provided prometheus.Gauge to the number of
+// requests currently handled by the wrapped http.Handler.
+//
+// See the example for InstrumentHandlerDuration for example usage.
+func InstrumentHandlerInFlight(g prometheus.Gauge, next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		g.Inc()
+		defer g.Dec()
+		next.ServeHTTP(w, r)
+	})
+}
+
+// InstrumentHandlerDuration is a middleware that wraps the provided
+// http.Handler to observe the request duration with the provided ObserverVec.
+// The ObserverVec must have zero, one, or two labels. The only allowed label
+// names are "code" and "method". The function panics if any other instance
+// labels are provided. The Observe method of the Observer in the ObserverVec
+// is called with the request duration in seconds. Partitioning happens by HTTP
+// status code and/or HTTP method if the respective instance label names are
+// present in the ObserverVec. For unpartitioned observations, use an
+// ObserverVec with zero labels. Note that partitioning of Histograms is
+// expensive and should be used judiciously.
+//
+// If the wrapped Handler does not set a status code, a status code of 200 is assumed.
+//
+// If the wrapped Handler panics, no values are reported.
+//
+// Note that this method is only guaranteed to never observe negative durations
+// if used with Go1.9+.
+func InstrumentHandlerDuration(obs prometheus.ObserverVec, next http.Handler) http.HandlerFunc {
+	code, method := checkLabels(obs)
+
+	if code {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			now := time.Now()
+			d := newDelegator(w, nil)
+			next.ServeHTTP(d, r)
+
+			obs.With(labels(code, method, r.Method, d.Status())).Observe(time.Since(now).Seconds())
+		})
+	}
+
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		now := time.Now()
+		next.ServeHTTP(w, r)
+		obs.With(labels(code, method, r.Method, 0)).Observe(time.Since(now).Seconds())
+	})
+}
+
+// InstrumentHandlerCounter is a middleware that wraps the provided
+// http.Handler to observe the request result with the provided CounterVec.
+// The CounterVec must have zero, one, or two labels. The only allowed label
+// names are "code" and "method". The function panics if any other instance
+// labels are provided. Partitioning of the CounterVec happens by HTTP status
+// code and/or HTTP method if the respective instance label names are present
+// in the CounterVec. For unpartitioned counting, use a CounterVec with
+// zero labels.
+//
+// If the wrapped Handler does not set a status code, a status code of 200 is assumed.
+//
+// If the wrapped Handler panics, the Counter is not incremented.
+//
+// See the example for InstrumentHandlerDuration for example usage.
+func InstrumentHandlerCounter(counter *prometheus.CounterVec, next http.Handler) http.HandlerFunc {
+	code, method := checkLabels(counter)
+
+	if code {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			d := newDelegator(w, nil)
+			next.ServeHTTP(d, r)
+			counter.With(labels(code, method, r.Method, d.Status())).Inc()
+		})
+	}
+
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		next.ServeHTTP(w, r)
+		counter.With(labels(code, method, r.Method, 0)).Inc()
+	})
+}
+
+// InstrumentHandlerTimeToWriteHeader is a middleware that wraps the provided
+// http.Handler to observe with the provided ObserverVec the request duration
+// until the response headers are written. The ObserverVec must have zero, one,
+// or two labels. The only allowed label names are "code" and "method". The
+// function panics if any other instance labels are provided. The Observe
+// method of the Observer in the ObserverVec is called with the request
+// duration in seconds. Partitioning happens by HTTP status code and/or HTTP
+// method if the respective instance label names are present in the
+// ObserverVec. For unpartitioned observations, use an ObserverVec with zero
+// labels. Note that partitioning of Histograms is expensive and should be used
+// judiciously.
+//
+// If the wrapped Handler panics before calling WriteHeader, no value is
+// reported.
+//
+// Note that this method is only guaranteed to never observe negative durations
+// if used with Go1.9+.
+//
+// See the example for InstrumentHandlerDuration for example usage.
+func InstrumentHandlerTimeToWriteHeader(obs prometheus.ObserverVec, next http.Handler) http.HandlerFunc {
+	code, method := checkLabels(obs)
+
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		now := time.Now()
+		d := newDelegator(w, func(status int) {
+			obs.With(labels(code, method, r.Method, status)).Observe(time.Since(now).Seconds())
+		})
+		next.ServeHTTP(d, r)
+	})
+}
+
+// InstrumentHandlerRequestSize is a middleware that wraps the provided
+// http.Handler to observe the request size with the provided ObserverVec.
+// The ObserverVec must have zero, one, or two labels. The only allowed label
+// names are "code" and "method". The function panics if any other instance
+// labels are provided. The Observe method of the Observer in the ObserverVec
+// is called with the request size in bytes. Partitioning happens by HTTP
+// status code and/or HTTP method if the respective instance label names are
+// present in the ObserverVec. For unpartitioned observations, use an
+// ObserverVec with zero labels. Note that partitioning of Histograms is
+// expensive and should be used judiciously.
+//
+// If the wrapped Handler does not set a status code, a status code of 200 is assumed.
+//
+// If the wrapped Handler panics, no values are reported.
+//
+// See the example for InstrumentHandlerDuration for example usage.
+func InstrumentHandlerRequestSize(obs prometheus.ObserverVec, next http.Handler) http.HandlerFunc {
+	code, method := checkLabels(obs)
+
+	if code {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			d := newDelegator(w, nil)
+			next.ServeHTTP(d, r)
+			size := computeApproximateRequestSize(r)
+			obs.With(labels(code, method, r.Method, d.Status())).Observe(float64(size))
+		})
+	}
+
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		next.ServeHTTP(w, r)
+		size := computeApproximateRequestSize(r)
+		obs.With(labels(code, method, r.Method, 0)).Observe(float64(size))
+	})
+}
+
+// InstrumentHandlerResponseSize is a middleware that wraps the provided
+// http.Handler to observe the response size with the provided ObserverVec.
+// The ObserverVec must have zero, one, or two labels. The only allowed label
+// names are "code" and "method". The function panics if any other instance
+// labels are provided. The Observe method of the Observer in the ObserverVec
+// is called with the response size in bytes. Partitioning happens by HTTP
+// status code and/or HTTP method if the respective instance label names are
+// present in the ObserverVec. For unpartitioned observations, use an
+// ObserverVec with zero labels. Note that partitioning of Histograms is
+// expensive and should be used judiciously.
+//
+// If the wrapped Handler does not set a status code, a status code of 200 is assumed.
+//
+// If the wrapped Handler panics, no values are reported.
+//
+// See the example for InstrumentHandlerDuration for example usage.
+func InstrumentHandlerResponseSize(obs prometheus.ObserverVec, next http.Handler) http.Handler {
+	code, method := checkLabels(obs)
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		d := newDelegator(w, nil)
+		next.ServeHTTP(d, r)
+		obs.With(labels(code, method, r.Method, d.Status())).Observe(float64(d.Written()))
+	})
+}
+
+func checkLabels(c prometheus.Collector) (code bool, method bool) {
+	// TODO(beorn7): Remove this hacky way to check for instance labels
+	// once Descriptors can have their dimensionality queried.
+	var (
+		desc *prometheus.Desc
+		pm   dto.Metric
+	)
+
+	descc := make(chan *prometheus.Desc, 1)
+	c.Describe(descc)
+
+	select {
+	case desc = <-descc:
+	default:
+		panic("no description provided by collector")
+	}
+	select {
+	case <-descc:
+		panic("more than one description provided by collector")
+	default:
+	}
+
+	close(descc)
+
+	if _, err := prometheus.NewConstMetric(desc, prometheus.UntypedValue, 0); err == nil {
+		return
+	}
+	if m, err := prometheus.NewConstMetric(desc, prometheus.UntypedValue, 0, magicString); err == nil {
+		if err := m.Write(&pm); err != nil {
+			panic("error checking metric for labels")
+		}
+		for _, label := range pm.Label {
+			name, value := label.GetName(), label.GetValue()
+			if value != magicString {
+				continue
+			}
+			switch name {
+			case "code":
+				code = true
+			case "method":
+				method = true
+			default:
+				panic("metric partitioned with non-supported labels")
+			}
+			return
+		}
+		panic("previously set label not found – this must never happen")
+	}
+	if m, err := prometheus.NewConstMetric(desc, prometheus.UntypedValue, 0, magicString, magicString); err == nil {
+		if err := m.Write(&pm); err != nil {
+			panic("error checking metric for labels")
+		}
+		for _, label := range pm.Label {
+			name, value := label.GetName(), label.GetValue()
+			if value != magicString {
+				continue
+			}
+			if name == "code" || name == "method" {
+				continue
+			}
+			panic("metric partitioned with non-supported labels")
+		}
+		code = true
+		method = true
+		return
+	}
+	panic("metric partitioned with non-supported labels")
+}
+
+// emptyLabels is a one-time allocation for non-partitioned metrics to avoid
+// unnecessary allocations on each request.
+var emptyLabels = prometheus.Labels{}
+
+func labels(code, method bool, reqMethod string, status int) prometheus.Labels {
+	if !(code || method) {
+		return emptyLabels
+	}
+	labels := prometheus.Labels{}
+
+	if code {
+		labels["code"] = sanitizeCode(status)
+	}
+	if method {
+		labels["method"] = sanitizeMethod(reqMethod)
+	}
+
+	return labels
+}
+
+func computeApproximateRequestSize(r *http.Request) int {
+	s := 0
+	if r.URL != nil {
+		s += len(r.URL.String())
+	}
+
+	s += len(r.Method)
+	s += len(r.Proto)
+	for name, values := range r.Header {
+		s += len(name)
+		for _, value := range values {
+			s += len(value)
+		}
+	}
+	s += len(r.Host)
+
+	// N.B. r.Form and r.MultipartForm are assumed to be included in r.URL.
+
+	if r.ContentLength != -1 {
+		s += int(r.ContentLength)
+	}
+	return s
+}
+
+func sanitizeMethod(m string) string {
+	switch m {
+	case "GET", "get":
+		return "get"
+	case "PUT", "put":
+		return "put"
+	case "HEAD", "head":
+		return "head"
+	case "POST", "post":
+		return "post"
+	case "DELETE", "delete":
+		return "delete"
+	case "CONNECT", "connect":
+		return "connect"
+	case "OPTIONS", "options":
+		return "options"
+	case "NOTIFY", "notify":
+		return "notify"
+	default:
+		return strings.ToLower(m)
+	}
+}
+
+// If the wrapped http.Handler has not set a status code, i.e. the value is
+// currently 0, santizeCode will return 200, for consistency with behavior in
+// the stdlib.
+func sanitizeCode(s int) string {
+	switch s {
+	case 100:
+		return "100"
+	case 101:
+		return "101"
+
+	case 200, 0:
+		return "200"
+	case 201:
+		return "201"
+	case 202:
+		return "202"
+	case 203:
+		return "203"
+	case 204:
+		return "204"
+	case 205:
+		return "205"
+	case 206:
+		return "206"
+
+	case 300:
+		return "300"
+	case 301:
+		return "301"
+	case 302:
+		return "302"
+	case 304:
+		return "304"
+	case 305:
+		return "305"
+	case 307:
+		return "307"
+
+	case 400:
+		return "400"
+	case 401:
+		return "401"
+	case 402:
+		return "402"
+	case 403:
+		return "403"
+	case 404:
+		return "404"
+	case 405:
+		return "405"
+	case 406:
+		return "406"
+	case 407:
+		return "407"
+	case 408:
+		return "408"
+	case 409:
+		return "409"
+	case 410:
+		return "410"
+	case 411:
+		return "411"
+	case 412:
+		return "412"
+	case 413:
+		return "413"
+	case 414:
+		return "414"
+	case 415:
+		return "415"
+	case 416:
+		return "416"
+	case 417:
+		return "417"
+	case 418:
+		return "418"
+
+	case 500:
+		return "500"
+	case 501:
+		return "501"
+	case 502:
+		return "502"
+	case 503:
+		return "503"
+	case 504:
+		return "504"
+	case 505:
+		return "505"
+
+	case 428:
+		return "428"
+	case 429:
+		return "429"
+	case 431:
+		return "431"
+	case 511:
+		return "511"
+
+	default:
+		return strconv.Itoa(s)
+	}
+}

vendor/github.com/prometheus/client_golang/prometheus/registry.go

@@ -20,6 +20,7 @@ import (
 	"os"
 	"sort"
 	"sync"
+	"unicode/utf8"
 
 	"github.com/golang/protobuf/proto"
 
@@ -80,7 +81,7 @@ func NewPedanticRegistry() *Registry {
 
 // Registerer is the interface for the part of a registry in charge of
 // registering and unregistering. Users of custom registries should use
-// Registerer as type for registration purposes (rather then the Registry type
+// Registerer as type for registration purposes (rather than the Registry type
 // directly). In that way, they are free to use custom Registerer implementation
 // (e.g. for testing purposes).
 type Registerer interface {
@@ -679,6 +680,12 @@ func checkMetricConsistency(
 		)
 	}
 
+	for _, labelPair := range dtoMetric.GetLabel() {
+		if !utf8.ValidString(*labelPair.Value) {
+			return fmt.Errorf("collected metric's label %s is not utf8: %#v", *labelPair.Name, *labelPair.Value)
+		}
+	}
+
 	// Is the metric unique (i.e. no other metric with the same name and the same label values)?
 	h := hashNew()
 	h = hashAdd(h, metricFamily.GetName())

vendor/github.com/prometheus/client_golang/prometheus/summary.go

@@ -399,12 +399,11 @@ func (s quantSort) Less(i, j int) bool {
 // (e.g. HTTP request latencies, partitioned by status code and method). Create
 // instances with NewSummaryVec.
 type SummaryVec struct {
-	*MetricVec
+	*metricVec
 }
 
 // NewSummaryVec creates a new SummaryVec based on the provided SummaryOpts and
-// partitioned by the given label names. At least one label name must be
-// provided.
+// partitioned by the given label names.
 func NewSummaryVec(opts SummaryOpts, labelNames []string) *SummaryVec {
 	desc := NewDesc(
 		BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
@@ -413,30 +412,60 @@ func NewSummaryVec(opts SummaryOpts, labelNames []string) *SummaryVec {
 		opts.ConstLabels,
 	)
 	return &SummaryVec{
-		MetricVec: newMetricVec(desc, func(lvs ...string) Metric {
+		metricVec: newMetricVec(desc, func(lvs ...string) Metric {
 			return newSummary(desc, opts, lvs...)
 		}),
 	}
 }
 
-// GetMetricWithLabelValues replaces the method of the same name in
-// MetricVec. The difference is that this method returns a Summary and not a
-// Metric so that no type conversion is required.
-func (m *SummaryVec) GetMetricWithLabelValues(lvs ...string) (Summary, error) {
-	metric, err := m.MetricVec.GetMetricWithLabelValues(lvs...)
+// GetMetricWithLabelValues returns the Summary for the given slice of label
+// values (same order as the VariableLabels in Desc). If that combination of
+// label values is accessed for the first time, a new Summary is created.
+//
+// It is possible to call this method without using the returned Summary to only
+// create the new Summary but leave it at its starting value, a Summary without
+// any observations.
+//
+// Keeping the Summary for later use is possible (and should be considered if
+// performance is critical), but keep in mind that Reset, DeleteLabelValues and
+// Delete can be used to delete the Summary from the SummaryVec. In that case, the
+// Summary will still exist, but it will not be exported anymore, even if a
+// Summary with the same label values is created later. See also the CounterVec
+// example.
+//
+// An error is returned if the number of label values is not the same as the
+// number of VariableLabels in Desc.
+//
+// Note that for more than one label value, this method is prone to mistakes
+// caused by an incorrect order of arguments. Consider GetMetricWith(Labels) as
+// an alternative to avoid that type of mistake. For higher label numbers, the
+// latter has a much more readable (albeit more verbose) syntax, but it comes
+// with a performance overhead (for creating and processing the Labels map).
+// See also the GaugeVec example.
+func (m *SummaryVec) GetMetricWithLabelValues(lvs ...string) (Observer, error) {
+	metric, err := m.metricVec.getMetricWithLabelValues(lvs...)
 	if metric != nil {
-		return metric.(Summary), err
+		return metric.(Observer), err
 	}
 	return nil, err
 }
 
-// GetMetricWith replaces the method of the same name in MetricVec. The
-// difference is that this method returns a Summary and not a Metric so that no
-// type conversion is required.
-func (m *SummaryVec) GetMetricWith(labels Labels) (Summary, error) {
-	metric, err := m.MetricVec.GetMetricWith(labels)
+// GetMetricWith returns the Summary for the given Labels map (the label names
+// must match those of the VariableLabels in Desc). If that label map is
+// accessed for the first time, a new Summary is created. Implications of
+// creating a Summary without using it and keeping the Summary for later use are
+// the same as for GetMetricWithLabelValues.
+//
+// An error is returned if the number and names of the Labels are inconsistent
+// with those of the VariableLabels in Desc.
+//
+// This method is used for the same purpose as
+// GetMetricWithLabelValues(...string). See there for pros and cons of the two
+// methods.
+func (m *SummaryVec) GetMetricWith(labels Labels) (Observer, error) {
+	metric, err := m.metricVec.getMetricWith(labels)
 	if metric != nil {
-		return metric.(Summary), err
+		return metric.(Observer), err
 	}
 	return nil, err
 }
@@ -445,15 +474,15 @@ func (m *SummaryVec) GetMetricWith(labels Labels) (Summary, error) {
 // GetMetricWithLabelValues would have returned an error. By not returning an
 // error, WithLabelValues allows shortcuts like
 //     myVec.WithLabelValues("404", "GET").Observe(42.21)
-func (m *SummaryVec) WithLabelValues(lvs ...string) Summary {
-	return m.MetricVec.WithLabelValues(lvs...).(Summary)
+func (m *SummaryVec) WithLabelValues(lvs ...string) Observer {
+	return m.metricVec.withLabelValues(lvs...).(Observer)
 }
 
 // With works as GetMetricWith, but panics where GetMetricWithLabels would have
 // returned an error. By not returning an error, With allows shortcuts like
 //     myVec.With(Labels{"code": "404", "method": "GET"}).Observe(42.21)
-func (m *SummaryVec) With(labels Labels) Summary {
-	return m.MetricVec.With(labels).(Summary)
+func (m *SummaryVec) With(labels Labels) Observer {
+	return m.metricVec.with(labels).(Observer)
 }
 
 type constSummary struct {
@@ -514,8 +543,8 @@ func NewConstSummary(
 	quantiles map[float64]float64,
 	labelValues ...string,
 ) (Metric, error) {
-	if len(desc.variableLabels) != len(labelValues) {
-		return nil, errInconsistentCardinality
+	if err := validateLabelValues(labelValues, len(desc.variableLabels)); err != nil {
+		return nil, err
 	}
 	return &constSummary{
 		desc:       desc,

vendor/github.com/prometheus/client_golang/prometheus/timer.go

@@ -15,32 +15,6 @@ package prometheus
 
 import "time"
 
-// Observer is the interface that wraps the Observe method, which is used by
-// Histogram and Summary to add observations.
-type Observer interface {
-	Observe(float64)
-}
-
-// The ObserverFunc type is an adapter to allow the use of ordinary
-// functions as Observers. If f is a function with the appropriate
-// signature, ObserverFunc(f) is an Observer that calls f.
-//
-// This adapter is usually used in connection with the Timer type, and there are
-// two general use cases:
-//
-// The most common one is to use a Gauge as the Observer for a Timer.
-// See the "Gauge" Timer example.
-//
-// The more advanced use case is to create a function that dynamically decides
-// which Observer to use for observing the duration. See the "Complex" Timer
-// example.
-type ObserverFunc func(float64)
-
-// Observe calls f(value). It implements Observer.
-func (f ObserverFunc) Observe(value float64) {
-	f(value)
-}
-
 // Timer is a helper type to time functions. Use NewTimer to create new
 // instances.
 type Timer struct {
@@ -67,6 +41,9 @@ func NewTimer(o Observer) *Timer {
 // NewTimer. It calls the Observe method of the Observer provided during
 // construction with the duration in seconds as an argument. ObserveDuration is
 // usually called with a defer statement.
+//
+// Note that this method is only guaranteed to never observe negative durations
+// if used with Go1.9+.
 func (t *Timer) ObserveDuration() {
 	if t.observer != nil {
 		t.observer.Observe(time.Since(t.begin).Seconds())

vendor/github.com/prometheus/client_golang/prometheus/untyped.go

@@ -13,113 +13,12 @@
 
 package prometheus
 
-// Untyped is a Metric that represents a single numerical value that can
-// arbitrarily go up and down.
-//
-// An Untyped metric works the same as a Gauge. The only difference is that to
-// no type information is implied.
-//
-// To create Untyped instances, use NewUntyped.
-//
-// Deprecated: The Untyped type is deprecated because it doesn't make sense in
-// direct instrumentation. If you need to mirror an external metric of unknown
-// type (usually while writing exporters), Use MustNewConstMetric to create an
-// untyped metric instance on the fly.
-type Untyped interface {
-	Metric
-	Collector
-
-	// Set sets the Untyped metric to an arbitrary value.
-	Set(float64)
-	// Inc increments the Untyped metric by 1.
-	Inc()
-	// Dec decrements the Untyped metric by 1.
-	Dec()
-	// Add adds the given value to the Untyped metric. (The value can be
-	// negative, resulting in a decrease.)
-	Add(float64)
-	// Sub subtracts the given value from the Untyped metric. (The value can
-	// be negative, resulting in an increase.)
-	Sub(float64)
-}
-
 // UntypedOpts is an alias for Opts. See there for doc comments.
 type UntypedOpts Opts
 
-// NewUntyped creates a new Untyped metric from the provided UntypedOpts.
-func NewUntyped(opts UntypedOpts) Untyped {
-	return newValue(NewDesc(
-		BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
-		opts.Help,
-		nil,
-		opts.ConstLabels,
-	), UntypedValue, 0)
-}
-
-// UntypedVec is a Collector that bundles a set of Untyped metrics that all
-// share the same Desc, but have different values for their variable
-// labels. This is used if you want to count the same thing partitioned by
-// various dimensions. Create instances with NewUntypedVec.
-type UntypedVec struct {
-	*MetricVec
-}
-
-// NewUntypedVec creates a new UntypedVec based on the provided UntypedOpts and
-// partitioned by the given label names. At least one label name must be
-// provided.
-func NewUntypedVec(opts UntypedOpts, labelNames []string) *UntypedVec {
-	desc := NewDesc(
-		BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
-		opts.Help,
-		labelNames,
-		opts.ConstLabels,
-	)
-	return &UntypedVec{
-		MetricVec: newMetricVec(desc, func(lvs ...string) Metric {
-			return newValue(desc, UntypedValue, 0, lvs...)
-		}),
-	}
-}
-
-// GetMetricWithLabelValues replaces the method of the same name in
-// MetricVec. The difference is that this method returns an Untyped and not a
-// Metric so that no type conversion is required.
-func (m *UntypedVec) GetMetricWithLabelValues(lvs ...string) (Untyped, error) {
-	metric, err := m.MetricVec.GetMetricWithLabelValues(lvs...)
-	if metric != nil {
-		return metric.(Untyped), err
-	}
-	return nil, err
-}
-
-// GetMetricWith replaces the method of the same name in MetricVec. The
-// difference is that this method returns an Untyped and not a Metric so that no
-// type conversion is required.
-func (m *UntypedVec) GetMetricWith(labels Labels) (Untyped, error) {
-	metric, err := m.MetricVec.GetMetricWith(labels)
-	if metric != nil {
-		return metric.(Untyped), err
-	}
-	return nil, err
-}
-
-// WithLabelValues works as GetMetricWithLabelValues, but panics where
-// GetMetricWithLabelValues would have returned an error. By not returning an
-// error, WithLabelValues allows shortcuts like
-//     myVec.WithLabelValues("404", "GET").Add(42)
-func (m *UntypedVec) WithLabelValues(lvs ...string) Untyped {
-	return m.MetricVec.WithLabelValues(lvs...).(Untyped)
-}
-
-// With works as GetMetricWith, but panics where GetMetricWithLabels would have
-// returned an error. By not returning an error, With allows shortcuts like
-//     myVec.With(Labels{"code": "404", "method": "GET"}).Add(42)
-func (m *UntypedVec) With(labels Labels) Untyped {
-	return m.MetricVec.With(labels).(Untyped)
-}
-
-// UntypedFunc is an Untyped whose value is determined at collect time by
-// calling a provided function.
+// UntypedFunc works like GaugeFunc but the collected metric is of type
+// "Untyped". UntypedFunc is useful to mirror an external metric of unknown
+// type.
 //
 // To create UntypedFunc instances, use NewUntypedFunc.
 type UntypedFunc interface {

vendor/github.com/prometheus/client_golang/prometheus/value.go

@@ -14,7 +14,6 @@
 package prometheus
 
 import (
-	"errors"
 	"fmt"
 	"math"
 	"sort"
@@ -37,14 +36,12 @@ const (
 	UntypedValue
 )
 
-var errInconsistentCardinality = errors.New("inconsistent label cardinality")
-
 // value is a generic metric for simple values. It implements Metric, Collector,
 // Counter, Gauge, and Untyped. Its effective type is determined by
 // ValueType. This is a low-level building block used by the library to back the
 // implementations of Counter, Gauge, and Untyped.
 type value struct {
-	// valBits containst the bits of the represented float64 value. It has
+	// valBits contains the bits of the represented float64 value. It has
 	// to go first in the struct to guarantee alignment for atomic
 	// operations.  http://golang.org/pkg/sync/atomic/#pkg-note-BUG
 	valBits uint64
@@ -158,8 +155,8 @@ func (v *valueFunc) Write(out *dto.Metric) error {
 // the Collect method. NewConstMetric returns an error if the length of
 // labelValues is not consistent with the variable labels in Desc.
 func NewConstMetric(desc *Desc, valueType ValueType, value float64, labelValues ...string) (Metric, error) {
-	if len(desc.variableLabels) != len(labelValues) {
-		return nil, errInconsistentCardinality
+	if err := validateLabelValues(labelValues, len(desc.variableLabels)); err != nil {
+		return nil, err
 	}
 	return &constMetric{
 		desc:       desc,

vendor/github.com/prometheus/client_golang/prometheus/vec.go

@@ -20,12 +20,12 @@ import (
 	"github.com/prometheus/common/model"
 )
 
-// MetricVec is a Collector to bundle metrics of the same name that
-// differ in their label values. MetricVec is usually not used directly but as a
-// building block for implementations of vectors of a given metric
-// type. GaugeVec, CounterVec, SummaryVec, and UntypedVec are examples already
-// provided in this package.
-type MetricVec struct {
+// metricVec is a Collector to bundle metrics of the same name that differ in
+// their label values. metricVec is not used directly (and therefore
+// unexported). It is used as a building block for implementations of vectors of
+// a given metric type, like GaugeVec, CounterVec, SummaryVec, HistogramVec, and
+// UntypedVec.
+type metricVec struct {
 	mtx      sync.RWMutex // Protects the children.
 	children map[uint64][]metricWithLabelValues
 	desc     *Desc
@@ -35,10 +35,9 @@ type MetricVec struct {
 	hashAddByte func(h uint64, b byte) uint64
 }
 
-// newMetricVec returns an initialized MetricVec. The concrete value is
-// returned for embedding into another struct.
-func newMetricVec(desc *Desc, newMetric func(lvs ...string) Metric) *MetricVec {
-	return &MetricVec{
+// newMetricVec returns an initialized metricVec.
+func newMetricVec(desc *Desc, newMetric func(lvs ...string) Metric) *metricVec {
+	return &metricVec{
 		children:    map[uint64][]metricWithLabelValues{},
 		desc:        desc,
 		newMetric:   newMetric,
@@ -56,12 +55,12 @@ type metricWithLabelValues struct {
 
 // Describe implements Collector. The length of the returned slice
 // is always one.
-func (m *MetricVec) Describe(ch chan<- *Desc) {
+func (m *metricVec) Describe(ch chan<- *Desc) {
 	ch <- m.desc
 }
 
 // Collect implements Collector.
-func (m *MetricVec) Collect(ch chan<- Metric) {
+func (m *metricVec) Collect(ch chan<- Metric) {
 	m.mtx.RLock()
 	defer m.mtx.RUnlock()
 
@@ -72,31 +71,7 @@ func (m *MetricVec) Collect(ch chan<- Metric) {
 	}
 }
 
-// GetMetricWithLabelValues returns the Metric for the given slice of label
-// values (same order as the VariableLabels in Desc). If that combination of
-// label values is accessed for the first time, a new Metric is created.
-//
-// It is possible to call this method without using the returned Metric to only
-// create the new Metric but leave it at its start value (e.g. a Summary or
-// Histogram without any observations). See also the SummaryVec example.
-//
-// Keeping the Metric for later use is possible (and should be considered if
-// performance is critical), but keep in mind that Reset, DeleteLabelValues and
-// Delete can be used to delete the Metric from the MetricVec. In that case, the
-// Metric will still exist, but it will not be exported anymore, even if a
-// Metric with the same label values is created later. See also the CounterVec
-// example.
-//
-// An error is returned if the number of label values is not the same as the
-// number of VariableLabels in Desc.
-//
-// Note that for more than one label value, this method is prone to mistakes
-// caused by an incorrect order of arguments. Consider GetMetricWith(Labels) as
-// an alternative to avoid that type of mistake. For higher label numbers, the
-// latter has a much more readable (albeit more verbose) syntax, but it comes
-// with a performance overhead (for creating and processing the Labels map).
-// See also the GaugeVec example.
-func (m *MetricVec) GetMetricWithLabelValues(lvs ...string) (Metric, error) {
+func (m *metricVec) getMetricWithLabelValues(lvs ...string) (Metric, error) {
 	h, err := m.hashLabelValues(lvs)
 	if err != nil {
 		return nil, err
@@ -105,19 +80,7 @@ func (m *MetricVec) GetMetricWithLabelValues(lvs ...string) (Metric, error) {
 	return m.getOrCreateMetricWithLabelValues(h, lvs), nil
 }
 
-// GetMetricWith returns the Metric for the given Labels map (the label names
-// must match those of the VariableLabels in Desc). If that label map is
-// accessed for the first time, a new Metric is created. Implications of
-// creating a Metric without using it and keeping the Metric for later use are
-// the same as for GetMetricWithLabelValues.
-//
-// An error is returned if the number and names of the Labels are inconsistent
-// with those of the VariableLabels in Desc.
-//
-// This method is used for the same purpose as
-// GetMetricWithLabelValues(...string). See there for pros and cons of the two
-// methods.
-func (m *MetricVec) GetMetricWith(labels Labels) (Metric, error) {
+func (m *metricVec) getMetricWith(labels Labels) (Metric, error) {
 	h, err := m.hashLabels(labels)
 	if err != nil {
 		return nil, err
@@ -126,22 +89,16 @@ func (m *MetricVec) GetMetricWith(labels Labels) (Metric, error) {
 	return m.getOrCreateMetricWithLabels(h, labels), nil
 }
 
-// WithLabelValues works as GetMetricWithLabelValues, but panics if an error
-// occurs. The method allows neat syntax like:
-//     httpReqs.WithLabelValues("404", "POST").Inc()
-func (m *MetricVec) WithLabelValues(lvs ...string) Metric {
-	metric, err := m.GetMetricWithLabelValues(lvs...)
+func (m *metricVec) withLabelValues(lvs ...string) Metric {
+	metric, err := m.getMetricWithLabelValues(lvs...)
 	if err != nil {
 		panic(err)
 	}
 	return metric
 }
 
-// With works as GetMetricWith, but panics if an error occurs. The method allows
-// neat syntax like:
-//     httpReqs.With(Labels{"status":"404", "method":"POST"}).Inc()
-func (m *MetricVec) With(labels Labels) Metric {
-	metric, err := m.GetMetricWith(labels)
+func (m *metricVec) with(labels Labels) Metric {
+	metric, err := m.getMetricWith(labels)
 	if err != nil {
 		panic(err)
 	}
@@ -153,8 +110,8 @@ func (m *MetricVec) With(labels Labels) Metric {
 // returns true if a metric was deleted.
 //
 // It is not an error if the number of label values is not the same as the
-// number of VariableLabels in Desc.  However, such inconsistent label count can
-// never match an actual Metric, so the method will always return false in that
+// number of VariableLabels in Desc. However, such inconsistent label count can
+// never match an actual metric, so the method will always return false in that
 // case.
 //
 // Note that for more than one label value, this method is prone to mistakes
@@ -163,7 +120,7 @@ func (m *MetricVec) With(labels Labels) Metric {
 // latter has a much more readable (albeit more verbose) syntax, but it comes
 // with a performance overhead (for creating and processing the Labels map).
 // See also the CounterVec example.
-func (m *MetricVec) DeleteLabelValues(lvs ...string) bool {
+func (m *metricVec) DeleteLabelValues(lvs ...string) bool {
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
 
@@ -178,13 +135,13 @@ func (m *MetricVec) DeleteLabelValues(lvs ...string) bool {
 // passed in as labels. It returns true if a metric was deleted.
 //
 // It is not an error if the number and names of the Labels are inconsistent
-// with those of the VariableLabels in the Desc of the MetricVec. However, such
-// inconsistent Labels can never match an actual Metric, so the method will
-// always return false in that case.
+// with those of the VariableLabels in Desc. However, such inconsistent Labels
+// can never match an actual metric, so the method will always return false in
+// that case.
 //
 // This method is used for the same purpose as DeleteLabelValues(...string). See
 // there for pros and cons of the two methods.
-func (m *MetricVec) Delete(labels Labels) bool {
+func (m *metricVec) Delete(labels Labels) bool {
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
 
@@ -199,7 +156,7 @@ func (m *MetricVec) Delete(labels Labels) bool {
 // deleteByHashWithLabelValues removes the metric from the hash bucket h. If
 // there are multiple matches in the bucket, use lvs to select a metric and
 // remove only that metric.
-func (m *MetricVec) deleteByHashWithLabelValues(h uint64, lvs []string) bool {
+func (m *metricVec) deleteByHashWithLabelValues(h uint64, lvs []string) bool {
 	metrics, ok := m.children[h]
 	if !ok {
 		return false
@@ -221,7 +178,7 @@ func (m *MetricVec) deleteByHashWithLabelValues(h uint64, lvs []string) bool {
 // deleteByHashWithLabels removes the metric from the hash bucket h. If there
 // are multiple matches in the bucket, use lvs to select a metric and remove
 // only that metric.
-func (m *MetricVec) deleteByHashWithLabels(h uint64, labels Labels) bool {
+func (m *metricVec) deleteByHashWithLabels(h uint64, labels Labels) bool {
 	metrics, ok := m.children[h]
 	if !ok {
 		return false
@@ -240,7 +197,7 @@ func (m *MetricVec) deleteByHashWithLabels(h uint64, labels Labels) bool {
 }
 
 // Reset deletes all metrics in this vector.
-func (m *MetricVec) Reset() {
+func (m *metricVec) Reset() {
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
 
@@ -249,10 +206,11 @@ func (m *MetricVec) Reset() {
 	}
 }
 
-func (m *MetricVec) hashLabelValues(vals []string) (uint64, error) {
-	if len(vals) != len(m.desc.variableLabels) {
-		return 0, errInconsistentCardinality
+func (m *metricVec) hashLabelValues(vals []string) (uint64, error) {
+	if err := validateLabelValues(vals, len(m.desc.variableLabels)); err != nil {
+		return 0, err
 	}
+
 	h := hashNew()
 	for _, val := range vals {
 		h = m.hashAdd(h, val)
@@ -261,10 +219,11 @@ func (m *MetricVec) hashLabelValues(vals []string) (uint64, error) {
 	return h, nil
 }
 
-func (m *MetricVec) hashLabels(labels Labels) (uint64, error) {
-	if len(labels) != len(m.desc.variableLabels) {
-		return 0, errInconsistentCardinality
+func (m *metricVec) hashLabels(labels Labels) (uint64, error) {
+	if err := validateValuesInLabels(labels, len(m.desc.variableLabels)); err != nil {
+		return 0, err
 	}
+
 	h := hashNew()
 	for _, label := range m.desc.variableLabels {
 		val, ok := labels[label]
@@ -281,9 +240,9 @@ func (m *MetricVec) hashLabels(labels Labels) (uint64, error) {
 // or creates it and returns the new one.
 //
 // This function holds the mutex.
-func (m *MetricVec) getOrCreateMetricWithLabelValues(hash uint64, lvs []string) Metric {
+func (m *metricVec) getOrCreateMetricWithLabelValues(hash uint64, lvs []string) Metric {
 	m.mtx.RLock()
-	metric, ok := m.getMetricWithLabelValues(hash, lvs)
+	metric, ok := m.getMetricWithHashAndLabelValues(hash, lvs)
 	m.mtx.RUnlock()
 	if ok {
 		return metric
@@ -291,7 +250,7 @@ func (m *MetricVec) getOrCreateMetricWithLabelValues(hash uint64, lvs []string)
 
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
-	metric, ok = m.getMetricWithLabelValues(hash, lvs)
+	metric, ok = m.getMetricWithHashAndLabelValues(hash, lvs)
 	if !ok {
 		// Copy to avoid allocation in case wo don't go down this code path.
 		copiedLVs := make([]string, len(lvs))
@@ -306,9 +265,9 @@ func (m *MetricVec) getOrCreateMetricWithLabelValues(hash uint64, lvs []string)
 // or creates it and returns the new one.
 //
 // This function holds the mutex.
-func (m *MetricVec) getOrCreateMetricWithLabels(hash uint64, labels Labels) Metric {
+func (m *metricVec) getOrCreateMetricWithLabels(hash uint64, labels Labels) Metric {
 	m.mtx.RLock()
-	metric, ok := m.getMetricWithLabels(hash, labels)
+	metric, ok := m.getMetricWithHashAndLabels(hash, labels)
 	m.mtx.RUnlock()
 	if ok {
 		return metric
@@ -316,7 +275,7 @@ func (m *MetricVec) getOrCreateMetricWithLabels(hash uint64, labels Labels) Metr
 
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
-	metric, ok = m.getMetricWithLabels(hash, labels)
+	metric, ok = m.getMetricWithHashAndLabels(hash, labels)
 	if !ok {
 		lvs := m.extractLabelValues(labels)
 		metric = m.newMetric(lvs...)
@@ -325,9 +284,9 @@ func (m *MetricVec) getOrCreateMetricWithLabels(hash uint64, labels Labels) Metr
 	return metric
 }
 
-// getMetricWithLabelValues gets a metric while handling possible collisions in
-// the hash space. Must be called while holding read mutex.
-func (m *MetricVec) getMetricWithLabelValues(h uint64, lvs []string) (Metric, bool) {
+// getMetricWithHashAndLabelValues gets a metric while handling possible
+// collisions in the hash space. Must be called while holding the read mutex.
+func (m *metricVec) getMetricWithHashAndLabelValues(h uint64, lvs []string) (Metric, bool) {
 	metrics, ok := m.children[h]
 	if ok {
 		if i := m.findMetricWithLabelValues(metrics, lvs); i < len(metrics) {
@@ -337,9 +296,9 @@ func (m *MetricVec) getMetricWithLabelValues(h uint64, lvs []string) (Metric, bo
 	return nil, false
 }
 
-// getMetricWithLabels gets a metric while handling possible collisions in
+// getMetricWithHashAndLabels gets a metric while handling possible collisions in
 // the hash space. Must be called while holding read mutex.
-func (m *MetricVec) getMetricWithLabels(h uint64, labels Labels) (Metric, bool) {
+func (m *metricVec) getMetricWithHashAndLabels(h uint64, labels Labels) (Metric, bool) {
 	metrics, ok := m.children[h]
 	if ok {
 		if i := m.findMetricWithLabels(metrics, labels); i < len(metrics) {
@@ -351,7 +310,7 @@ func (m *MetricVec) getMetricWithLabels(h uint64, labels Labels) (Metric, bool)
 
 // findMetricWithLabelValues returns the index of the matching metric or
 // len(metrics) if not found.
-func (m *MetricVec) findMetricWithLabelValues(metrics []metricWithLabelValues, lvs []string) int {
+func (m *metricVec) findMetricWithLabelValues(metrics []metricWithLabelValues, lvs []string) int {
 	for i, metric := range metrics {
 		if m.matchLabelValues(metric.values, lvs) {
 			return i
@@ -362,7 +321,7 @@ func (m *MetricVec) findMetricWithLabelValues(metrics []metricWithLabelValues, l
 
 // findMetricWithLabels returns the index of the matching metric or len(metrics)
 // if not found.
-func (m *MetricVec) findMetricWithLabels(metrics []metricWithLabelValues, labels Labels) int {
+func (m *metricVec) findMetricWithLabels(metrics []metricWithLabelValues, labels Labels) int {
 	for i, metric := range metrics {
 		if m.matchLabels(metric.values, labels) {
 			return i
@@ -371,7 +330,7 @@ func (m *MetricVec) findMetricWithLabels(metrics []metricWithLabelValues, labels
 	return len(metrics)
 }
 
-func (m *MetricVec) matchLabelValues(values []string, lvs []string) bool {
+func (m *metricVec) matchLabelValues(values []string, lvs []string) bool {
 	if len(values) != len(lvs) {
 		return false
 	}
@@ -383,7 +342,7 @@ func (m *MetricVec) matchLabelValues(values []string, lvs []string) bool {
 	return true
 }
 
-func (m *MetricVec) matchLabels(values []string, labels Labels) bool {
+func (m *metricVec) matchLabels(values []string, labels Labels) bool {
 	if len(labels) != len(values) {
 		return false
 	}
@@ -395,7 +354,7 @@ func (m *MetricVec) matchLabels(values []string, labels Labels) bool {
 	return true
 }
 
-func (m *MetricVec) extractLabelValues(labels Labels) []string {
+func (m *metricVec) extractLabelValues(labels Labels) []string {
 	labelValues := make([]string, len(labels))
 	for i, k := range m.desc.variableLabels {
 		labelValues[i] = labels[k]

vendor/github.com/prometheus/procfs/Makefile

@@ -1,6 +1,18 @@
-ci:
+ci: fmt lint test
+
+fmt:
 	! gofmt -l *.go | read nothing
 	go vet
-	go test -v ./...
+
+lint:
 	go get github.com/golang/lint/golint
 	golint *.go
+
+test: sysfs/fixtures/.unpacked
+	go test -v ./...
+
+sysfs/fixtures/.unpacked: sysfs/fixtures.ttar
+	./ttar -C sysfs -x -f sysfs/fixtures.ttar
+	touch $@
+
+.PHONY: fmt lint test ci

vendor/github.com/prometheus/procfs/sysfs/fixtures.ttar

@@ -0,0 +1,721 @@
+Directory: fixtures
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00/0000:00:0d.0
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00/0000:00:0d.0/ata4
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache/dirty_data
+Lines: 1
+0
+Mode: 644
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+Directory: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache/stats_day
+Mode: 755
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+Lines: 1
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+Lines: 1
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+Lines: 1
+0
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+Lines: 1
+0
+Mode: 644
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+Path: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache/stats_five_minute/cache_miss_collisions
+Lines: 1
+0
+Mode: 644
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+Path: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache/stats_five_minute/cache_misses
+Lines: 1
+0
+Mode: 644
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+Path: fixtures/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache/stats_five_minute/cache_readaheads
+Lines: 1
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vendor/github.com/prometheus/procfs/ttar

@@ -0,0 +1,264 @@
+#!/usr/bin/env bash
+# Purpose: plain text tar format
+# Limitations: - only suitable for text files, directories, and symlinks
+#              - stores only filename, content, and mode
+#              - not designed for untrusted input
+
+# Note: must work with bash version 3.2 (macOS)
+
+set -o errexit -o nounset
+
+# Sanitize environment (for instance, standard sorting of glob matches)
+export LC_ALL=C
+
+path=""
+CMD=""
+
+function usage {
+    bname=$(basename "$0")
+    cat << USAGE
+Usage:   $bname [-C <DIR>] -c -f <ARCHIVE> <FILE...> (create archive)
+         $bname            -t -f <ARCHIVE>           (list archive contents)
+         $bname [-C <DIR>] -x -f <ARCHIVE>           (extract archive)
+
+Options:
+         -C <DIR>                                    (change directory)
+
+Example: Change to sysfs directory, create ttar file from fixtures directory
+         $bname -C sysfs -c -f sysfs/fixtures.ttar fixtures/
+USAGE
+exit "$1"
+}
+
+function vecho {
+    if [ "${VERBOSE:-}" == "yes" ]; then
+        echo >&7 "$@"
+    fi
+}
+
+function set_cmd {
+    if [ -n "$CMD" ]; then
+        echo "ERROR: more than one command given"
+        echo
+        usage 2
+    fi
+    CMD=$1
+}
+
+while getopts :cf:htxvC: opt; do
+    case $opt in
+        c)
+            set_cmd "create"
+            ;;
+        f)
+            ARCHIVE=$OPTARG
+            ;;
+        h)
+            usage 0
+            ;;
+        t)
+            set_cmd "list"
+            ;;
+        x)
+            set_cmd "extract"
+            ;;
+        v)
+            VERBOSE=yes
+            exec 7>&1
+            ;;
+        C)
+            CDIR=$OPTARG
+            ;;
+        *)
+            echo >&2 "ERROR: invalid option -$OPTARG"
+            echo
+            usage 1
+            ;;
+    esac
+done
+
+# Remove processed options from arguments
+shift $(( OPTIND - 1 ));
+
+if [ "${CMD:-}" == "" ]; then
+    echo >&2 "ERROR: no command given"
+    echo
+    usage 1
+elif [ "${ARCHIVE:-}" == "" ]; then
+    echo >&2 "ERROR: no archive name given"
+    echo
+    usage 1
+fi
+
+function list {
+    local path=""
+    local size=0
+    local line_no=0
+    local ttar_file=$1
+    if [ -n "${2:-}" ]; then
+        echo >&2 "ERROR: too many arguments."
+        echo
+        usage 1
+    fi
+    if [ ! -e "$ttar_file" ]; then
+        echo >&2 "ERROR: file not found ($ttar_file)"
+        echo
+        usage 1
+    fi
+    while read -r line; do
+        line_no=$(( line_no + 1 ))
+        if [ $size -gt 0 ]; then
+            size=$(( size - 1 ))
+            continue
+        fi
+        if [[ $line =~ ^Path:\ (.*)$ ]]; then
+            path=${BASH_REMATCH[1]}
+        elif [[ $line =~ ^Lines:\ (.*)$ ]]; then
+            size=${BASH_REMATCH[1]}
+            echo "$path"
+        elif [[ $line =~ ^Directory:\ (.*)$ ]]; then
+            path=${BASH_REMATCH[1]}
+            echo "$path/"
+        elif [[ $line =~ ^SymlinkTo:\ (.*)$ ]]; then
+            echo  "$path -> ${BASH_REMATCH[1]}"
+        fi
+    done < "$ttar_file"
+}
+
+function extract {
+    local path=""
+    local size=0
+    local line_no=0
+    local ttar_file=$1
+    if [ -n "${2:-}" ]; then
+        echo >&2 "ERROR: too many arguments."
+        echo
+        usage 1
+    fi
+    if [ ! -e "$ttar_file" ]; then
+        echo >&2 "ERROR: file not found ($ttar_file)"
+        echo
+        usage 1
+    fi
+    while IFS= read -r line; do
+        line_no=$(( line_no + 1 ))
+        if [ "$size" -gt 0 ]; then
+            echo "$line" >> "$path"
+            size=$(( size - 1 ))
+            continue
+        fi
+        if [[ $line =~ ^Path:\ (.*)$ ]]; then
+            path=${BASH_REMATCH[1]}
+            if [ -e "$path" ] || [ -L "$path" ]; then
+                rm "$path"
+            fi
+        elif [[ $line =~ ^Lines:\ (.*)$ ]]; then
+            size=${BASH_REMATCH[1]}
+            # Create file even if it is zero-length.
+            touch "$path"
+            vecho "    $path"
+        elif [[ $line =~ ^Mode:\ (.*)$ ]]; then
+            mode=${BASH_REMATCH[1]}
+            chmod "$mode" "$path"
+            vecho "$mode"
+        elif [[ $line =~ ^Directory:\ (.*)$ ]]; then
+            path=${BASH_REMATCH[1]}
+            mkdir -p "$path"
+            vecho "    $path/"
+        elif [[ $line =~ ^SymlinkTo:\ (.*)$ ]]; then
+            ln -s "${BASH_REMATCH[1]}" "$path"
+            vecho "    $path -> ${BASH_REMATCH[1]}"
+        elif [[ $line =~ ^# ]]; then
+            # Ignore comments between files
+            continue
+        else
+            echo >&2 "ERROR: Unknown keyword on line $line_no: $line"
+            exit 1
+        fi
+    done < "$ttar_file"
+}
+
+function div {
+    echo "# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -" \
+         "- - - - - -"
+}
+
+function get_mode {
+    local mfile=$1
+    if [ -z "${STAT_OPTION:-}" ]; then
+        if stat -c '%a' "$mfile" >/dev/null 2>&1; then
+            STAT_OPTION='-c'
+            STAT_FORMAT='%a'
+        else
+            STAT_OPTION='-f'
+            STAT_FORMAT='%A'
+        fi
+    fi
+    stat "${STAT_OPTION}" "${STAT_FORMAT}" "$mfile"
+}
+
+function _create {
+    shopt -s nullglob
+    local mode
+    while (( "$#" )); do
+        file=$1
+        if [ -L "$file" ]; then
+            echo "Path: $file"
+            symlinkTo=$(readlink "$file")
+            echo "SymlinkTo: $symlinkTo"
+            vecho "    $file -> $symlinkTo"
+            div
+        elif [ -d "$file" ]; then
+            # Strip trailing slash (if there is one)
+            file=${file%/}
+            echo "Directory: $file"
+            mode=$(get_mode "$file")
+            echo "Mode: $mode"
+            vecho "$mode $file/"
+            div
+            # Find all files and dirs, including hidden/dot files
+            for x in "$file/"{*,.[^.]*}; do
+                _create "$x"
+            done
+        elif [ -f "$file" ]; then
+            echo "Path: $file"
+            lines=$(wc -l "$file"|awk '{print $1}')
+            echo "Lines: $lines"
+            cat "$file"
+            mode=$(get_mode "$file")
+            echo "Mode: $mode"
+            vecho "$mode $file"
+            div
+        else
+            echo >&2 "ERROR: file not found ($file in $(pwd))"
+            exit 2
+        fi
+        shift
+    done
+}
+
+function create {
+    ttar_file=$1
+    shift
+    if [ -z "${1:-}" ]; then
+        echo >&2 "ERROR: missing arguments."
+        echo
+        usage 1
+    fi
+    if [ -e "$ttar_file" ]; then
+        rm "$ttar_file"
+    fi
+    exec > "$ttar_file"
+    _create "$@"
+}
+
+if [ -n "${CDIR:-}" ]; then
+    if [[ "$ARCHIVE" != /* ]]; then
+        # Relative path: preserve the archive's location before changing
+        # directory
+        ARCHIVE="$(pwd)/$ARCHIVE"
+    fi
+    cd "$CDIR"
+fi
+
+"$CMD" "$ARCHIVE" "$@"

vendor/github.com/sirupsen/logrus/CHANGELOG.md

@@ -1,3 +1,26 @@
+# 1.0.3
+
+* Replace example files with testable examples
+
+# 1.0.2
+
+* bug: quote non-string values in text formatter (#583)
+* Make (*Logger) SetLevel a public method
+
+# 1.0.1
+
+* bug: fix escaping in text formatter (#575)
+
+# 1.0.0
+
+* Officially changed name to lower-case
+* bug: colors on Windows 10 (#541)
+* bug: fix race in accessing level (#512)
+
+# 0.11.5
+
+* feature: add writer and writerlevel to entry (#372)
+
 # 0.11.4
 
 * bug: fix undefined variable on solaris (#493)

vendor/github.com/sirupsen/logrus/README.md

@@ -1,17 +1,24 @@
-# Logrus <img src="http://i.imgur.com/hTeVwmJ.png" width="40" height="40" alt=":walrus:" class="emoji" title=":walrus:"/>&nbsp;[![Build Status](https://travis-ci.org/Sirupsen/logrus.svg?branch=master)](https://travis-ci.org/Sirupsen/logrus)&nbsp;[![GoDoc](https://godoc.org/github.com/Sirupsen/logrus?status.svg)](https://godoc.org/github.com/Sirupsen/logrus)
-
-**Seeing weird case-sensitive problems?** See [this
-issue](https://github.com/sirupsen/logrus/issues/451#issuecomment-264332021).
-This change has been reverted. I apologize for causing this. I greatly
-underestimated the impact this would have. Logrus strives for stability and
-backwards compatibility and failed to provide that.
+# Logrus <img src="http://i.imgur.com/hTeVwmJ.png" width="40" height="40" alt=":walrus:" class="emoji" title=":walrus:"/>&nbsp;[![Build Status](https://travis-ci.org/sirupsen/logrus.svg?branch=master)](https://travis-ci.org/sirupsen/logrus)&nbsp;[![GoDoc](https://godoc.org/github.com/sirupsen/logrus?status.svg)](https://godoc.org/github.com/sirupsen/logrus)
 
 Logrus is a structured logger for Go (golang), completely API compatible with
-the standard library logger. [Godoc][godoc]. **Please note the Logrus API is not
-yet stable (pre 1.0). Logrus itself is completely stable and has been used in
-many large deployments. The core API is unlikely to change much but please
-version control your Logrus to make sure you aren't fetching latest `master` on
-every build.**
+the standard library logger.
+
+**Seeing weird case-sensitive problems?** It's in the past been possible to
+import Logrus as both upper- and lower-case. Due to the Go package environment,
+this caused issues in the community and we needed a standard. Some environments
+experienced problems with the upper-case variant, so the lower-case was decided.
+Everything using `logrus` will need to use the lower-case:
+`github.com/sirupsen/logrus`. Any package that isn't, should be changed.
+
+To fix Glide, see [these
+comments](https://github.com/sirupsen/logrus/issues/553#issuecomment-306591437).
+For an in-depth explanation of the casing issue, see [this
+comment](https://github.com/sirupsen/logrus/issues/570#issuecomment-313933276).
+
+**Are you interested in assisting in maintaining Logrus?** Currently I have a
+lot of obligations, and I am unable to provide Logrus with the maintainership it
+needs. If you'd like to help, please reach out to me at `simon at author's
+username dot com`.
 
 Nicely color-coded in development (when a TTY is attached, otherwise just
 plain text):
@@ -52,6 +59,12 @@ time="2015-03-26T01:27:38-04:00" level=fatal msg="The ice breaks!" err=&{0x20822
 exit status 1
 ```
 
+#### Case-sensitivity
+
+The organization's name was changed to lower-case--and this will not be changed
+back. If you are getting import conflicts due to case sensitivity, please use
+the lower-case import: `github.com/sirupsen/logrus`.
+
 #### Example
 
 The simplest way to use Logrus is simply the package-level exported logger:
@@ -60,7 +73,7 @@ The simplest way to use Logrus is simply the package-level exported logger:
 package main
 
 import (
-  log "github.com/Sirupsen/logrus"
+  log "github.com/sirupsen/logrus"
 )
 
 func main() {
@@ -71,7 +84,7 @@ func main() {
 ```
 
 Note that it's completely api-compatible with the stdlib logger, so you can
-replace your `log` imports everywhere with `log "github.com/Sirupsen/logrus"`
+replace your `log` imports everywhere with `log "github.com/sirupsen/logrus"`
 and you'll now have the flexibility of Logrus. You can customize it all you
 want:
 
@@ -80,7 +93,7 @@ package main
 
 import (
   "os"
-  log "github.com/Sirupsen/logrus"
+  log "github.com/sirupsen/logrus"
 )
 
 func init() {
@@ -130,7 +143,8 @@ application, you can also create an instance of the `logrus` Logger:
 package main
 
 import (
-  "github.com/Sirupsen/logrus"
+  "os"
+  "github.com/sirupsen/logrus"
 )
 
 // Create a new instance of the logger. You can have any number of instances.
@@ -158,7 +172,7 @@ func main() {
 
 #### Fields
 
-Logrus encourages careful, structured logging though logging fields instead of
+Logrus encourages careful, structured logging through logging fields instead of
 long, unparseable error messages. For example, instead of: `log.Fatalf("Failed
 to send event %s to topic %s with key %d")`, you should log the much more
 discoverable:
@@ -189,7 +203,7 @@ application or parts of one. For example, you may want to always log the
 every line, you can create a `logrus.Entry` to pass around instead:
 
 ```go
-requestLogger := log.WithFields(log.Fields{"request_id": request_id, user_ip: user_ip})
+requestLogger := log.WithFields(log.Fields{"request_id": request_id, "user_ip": user_ip})
 requestLogger.Info("something happened on that request") # will log request_id and user_ip
 requestLogger.Warn("something not great happened")
 ```
@@ -205,9 +219,9 @@ Logrus comes with [built-in hooks](hooks/). Add those, or your custom hook, in
 
 ```go
 import (
-  log "github.com/Sirupsen/logrus"
+  log "github.com/sirupsen/logrus"
   "gopkg.in/gemnasium/logrus-airbrake-hook.v2" // the package is named "aibrake"
-  logrus_syslog "github.com/Sirupsen/logrus/hooks/syslog"
+  logrus_syslog "github.com/sirupsen/logrus/hooks/syslog"
   "log/syslog"
 )
 
@@ -235,14 +249,16 @@ Note: Syslog hook also support connecting to local syslog (Ex. "/dev/log" or "/v
 | [Amqp-Hook](https://github.com/vladoatanasov/logrus_amqp) | Hook for logging to Amqp broker (Like RabbitMQ) |
 | [Bugsnag](https://github.com/Shopify/logrus-bugsnag/blob/master/bugsnag.go) | Send errors to the Bugsnag exception tracking service. |
 | [DeferPanic](https://github.com/deferpanic/dp-logrus) | Hook for logging to DeferPanic |
+| [Discordrus](https://github.com/kz/discordrus) | Hook for logging to [Discord](https://discordapp.com/) |
 | [ElasticSearch](https://github.com/sohlich/elogrus) | Hook for logging to ElasticSearch|
+| [Firehose](https://github.com/beaubrewer/logrus_firehose) | Hook for logging to [Amazon Firehose](https://aws.amazon.com/kinesis/firehose/)
 | [Fluentd](https://github.com/evalphobia/logrus_fluent) | Hook for logging to fluentd |
 | [Go-Slack](https://github.com/multiplay/go-slack) | Hook for logging to [Slack](https://slack.com) |
 | [Graylog](https://github.com/gemnasium/logrus-graylog-hook) | Hook for logging to [Graylog](http://graylog2.org/) |
 | [Hiprus](https://github.com/nubo/hiprus) | Send errors to a channel in hipchat. |
 | [Honeybadger](https://github.com/agonzalezro/logrus_honeybadger) | Hook for sending exceptions to Honeybadger |
 | [InfluxDB](https://github.com/Abramovic/logrus_influxdb) | Hook for logging to influxdb |
-| [Influxus] (http://github.com/vlad-doru/influxus) | Hook for concurrently logging to [InfluxDB] (http://influxdata.com/) |
+| [Influxus](http://github.com/vlad-doru/influxus) | Hook for concurrently logging to [InfluxDB](http://influxdata.com/) |
 | [Journalhook](https://github.com/wercker/journalhook) | Hook for logging to `systemd-journald` |
 | [KafkaLogrus](https://github.com/goibibo/KafkaLogrus) | Hook for logging to kafka |
 | [LFShook](https://github.com/rifflock/lfshook) | Hook for logging to the local filesystem |
@@ -252,6 +268,7 @@ Note: Syslog hook also support connecting to local syslog (Ex. "/dev/log" or "/v
 | [Logrusly](https://github.com/sebest/logrusly) | Send logs to [Loggly](https://www.loggly.com/) |
 | [Logstash](https://github.com/bshuster-repo/logrus-logstash-hook) | Hook for logging to [Logstash](https://www.elastic.co/products/logstash) |
 | [Mail](https://github.com/zbindenren/logrus_mail) | Hook for sending exceptions via mail |
+| [Mattermost](https://github.com/shuLhan/mattermost-integration/tree/master/hooks/logrus) | Hook for logging to [Mattermost](https://mattermost.com/) |
 | [Mongodb](https://github.com/weekface/mgorus) | Hook for logging to mongodb |
 | [NATS-Hook](https://github.com/rybit/nats_logrus_hook) | Hook for logging to [NATS](https://nats.io) |
 | [Octokit](https://github.com/dorajistyle/logrus-octokit-hook) | Hook for logging to github via octokit |
@@ -266,10 +283,12 @@ Note: Syslog hook also support connecting to local syslog (Ex. "/dev/log" or "/v
 | [Slackrus](https://github.com/johntdyer/slackrus) | Hook for Slack chat. |
 | [Stackdriver](https://github.com/knq/sdhook) | Hook for logging to [Google Stackdriver](https://cloud.google.com/logging/) |
 | [Sumorus](https://github.com/doublefree/sumorus) | Hook for logging to [SumoLogic](https://www.sumologic.com/)|
-| [Syslog](https://github.com/Sirupsen/logrus/blob/master/hooks/syslog/syslog.go) | Send errors to remote syslog server. Uses standard library `log/syslog` behind the scenes. |
+| [Syslog](https://github.com/sirupsen/logrus/blob/master/hooks/syslog/syslog.go) | Send errors to remote syslog server. Uses standard library `log/syslog` behind the scenes. |
+| [Syslog TLS](https://github.com/shinji62/logrus-syslog-ng) | Send errors to remote syslog server with TLS support. |
 | [TraceView](https://github.com/evalphobia/logrus_appneta) | Hook for logging to [AppNeta TraceView](https://www.appneta.com/products/traceview/) |
 | [Typetalk](https://github.com/dragon3/logrus-typetalk-hook) | Hook for logging to [Typetalk](https://www.typetalk.in/) |
 | [logz.io](https://github.com/ripcurld00d/logrus-logzio-hook) | Hook for logging to [logz.io](https://logz.io), a Log as a Service using Logstash |
+| [SQS-Hook](https://github.com/tsarpaul/logrus_sqs) | Hook for logging to [Amazon Simple Queue Service (SQS)](https://aws.amazon.com/sqs/) |
 
 #### Level logging
 
@@ -318,7 +337,7 @@ could do:
 
 ```go
 import (
-  log "github.com/Sirupsen/logrus"
+  log "github.com/sirupsen/logrus"
 )
 
 init() {
@@ -353,6 +372,7 @@ The built-in logging formatters are:
 
 Third party logging formatters:
 
+* [`FluentdFormatter`](https://github.com/joonix/log). Formats entries that can by parsed by Kubernetes and Google Container Engine.
 * [`logstash`](https://github.com/bshuster-repo/logrus-logstash-hook). Logs fields as [Logstash](http://logstash.net) Events.
 * [`prefixed`](https://github.com/x-cray/logrus-prefixed-formatter). Displays log entry source along with alternative layout.
 * [`zalgo`](https://github.com/aybabtme/logzalgo). Invoking the P͉̫o̳̼̊w̖͈̰͎e̬͔̭͂r͚̼̹̲ ̫͓͉̳͈ō̠͕͖̚f̝͍̠ ͕̲̞͖͑Z̖̫̤̫ͪa͉̬͈̗l͖͎g̳̥o̰̥̅!̣͔̲̻͊̄ ̙̘̦̹̦.
@@ -421,7 +441,7 @@ entries. It should not be a feature of the application-level logger.
 | Tool | Description |
 | ---- | ----------- |
 |[Logrus Mate](https://github.com/gogap/logrus_mate)|Logrus mate is a tool for Logrus to manage loggers, you can initial logger's level, hook and formatter by config file, the logger will generated with different config at different environment.|
-|[Logrus Viper Helper](https://github.com/heirko/go-contrib/tree/master/logrusHelper)|An Helper arround Logrus to wrap with spf13/Viper to load configuration with fangs! And to simplify Logrus configuration use some behavior of [Logrus Mate](https://github.com/gogap/logrus_mate). [sample](https://github.com/heirko/iris-contrib/blob/master/middleware/logrus-logger/example) |
+|[Logrus Viper Helper](https://github.com/heirko/go-contrib/tree/master/logrusHelper)|An Helper around Logrus to wrap with spf13/Viper to load configuration with fangs! And to simplify Logrus configuration use some behavior of [Logrus Mate](https://github.com/gogap/logrus_mate). [sample](https://github.com/heirko/iris-contrib/blob/master/middleware/logrus-logger/example) |
 
 #### Testing
 
@@ -431,15 +451,24 @@ Logrus has a built in facility for asserting the presence of log messages. This
 * a test logger (`test.NewNullLogger`) that just records log messages (and does not output any):
 
 ```go
-logger, hook := NewNullLogger()
-logger.Error("Hello error")
+import(
+  "github.com/sirupsen/logrus"
+  "github.com/sirupsen/logrus/hooks/test"
+  "github.com/stretchr/testify/assert"
+  "testing"
+)
 
-assert.Equal(1, len(hook.Entries))
-assert.Equal(logrus.ErrorLevel, hook.LastEntry().Level)
-assert.Equal("Hello error", hook.LastEntry().Message)
+func TestSomething(t*testing.T){
+  logger, hook := test.NewNullLogger()
+  logger.Error("Helloerror")
 
-hook.Reset()
-assert.Nil(hook.LastEntry())
+  assert.Equal(t, 1, len(hook.Entries))
+  assert.Equal(t, logrus.ErrorLevel, hook.LastEntry().Level)
+  assert.Equal(t, "Helloerror", hook.LastEntry().Message)
+
+  hook.Reset()
+  assert.Nil(t, hook.LastEntry())
+}
 ```
 
 #### Fatal handlers

vendor/github.com/sirupsen/logrus/alt_exit.go

@@ -1,7 +1,7 @@
 package logrus
 
 // The following code was sourced and modified from the
-// https://bitbucket.org/tebeka/atexit package governed by the following license:
+// https://github.com/tebeka/atexit package governed by the following license:
 //
 // Copyright (c) 2012 Miki Tebeka <miki.tebeka@gmail.com>.
 //

vendor/github.com/sirupsen/logrus/appveyor.yml

@@ -0,0 +1,14 @@
+version: "{build}"
+platform: x64
+clone_folder: c:\gopath\src\github.com\sirupsen\logrus
+environment:  
+  GOPATH: c:\gopath
+branches:  
+  only:
+    - master
+install:  
+  - set PATH=%GOPATH%\bin;c:\go\bin;%PATH%
+  - go version
+build_script:  
+  - go get -t
+  - go test

vendor/github.com/sirupsen/logrus/doc.go

@@ -7,7 +7,7 @@ The simplest way to use Logrus is simply the package-level exported logger:
   package main
 
   import (
-    log "github.com/Sirupsen/logrus"
+    log "github.com/sirupsen/logrus"
   )
 
   func main() {
@@ -21,6 +21,6 @@ The simplest way to use Logrus is simply the package-level exported logger:
 Output:
   time="2015-09-07T08:48:33Z" level=info msg="A walrus appears" animal=walrus number=1 size=10
 
-For a full guide visit https://github.com/Sirupsen/logrus
+For a full guide visit https://github.com/sirupsen/logrus
 */
 package logrus

vendor/github.com/sirupsen/logrus/entry.go

@@ -35,6 +35,7 @@ type Entry struct {
 	Time time.Time
 
 	// Level the log entry was logged at: Debug, Info, Warn, Error, Fatal or Panic
+	// This field will be set on entry firing and the value will be equal to the one in Logger struct field.
 	Level Level
 
 	// Message passed to Debug, Info, Warn, Error, Fatal or Panic
@@ -126,7 +127,7 @@ func (entry Entry) log(level Level, msg string) {
 }
 
 func (entry *Entry) Debug(args ...interface{}) {
-	if entry.Logger.Level >= DebugLevel {
+	if entry.Logger.level() >= DebugLevel {
 		entry.log(DebugLevel, fmt.Sprint(args...))
 	}
 }
@@ -136,13 +137,13 @@ func (entry *Entry) Print(args ...interface{}) {
 }
 
 func (entry *Entry) Info(args ...interface{}) {
-	if entry.Logger.Level >= InfoLevel {
+	if entry.Logger.level() >= InfoLevel {
 		entry.log(InfoLevel, fmt.Sprint(args...))
 	}
 }
 
 func (entry *Entry) Warn(args ...interface{}) {
-	if entry.Logger.Level >= WarnLevel {
+	if entry.Logger.level() >= WarnLevel {
 		entry.log(WarnLevel, fmt.Sprint(args...))
 	}
 }
@@ -152,20 +153,20 @@ func (entry *Entry) Warning(args ...interface{}) {
 }
 
 func (entry *Entry) Error(args ...interface{}) {
-	if entry.Logger.Level >= ErrorLevel {
+	if entry.Logger.level() >= ErrorLevel {
 		entry.log(ErrorLevel, fmt.Sprint(args...))
 	}
 }
 
 func (entry *Entry) Fatal(args ...interface{}) {
-	if entry.Logger.Level >= FatalLevel {
+	if entry.Logger.level() >= FatalLevel {
 		entry.log(FatalLevel, fmt.Sprint(args...))
 	}
 	Exit(1)
 }
 
 func (entry *Entry) Panic(args ...interface{}) {
-	if entry.Logger.Level >= PanicLevel {
+	if entry.Logger.level() >= PanicLevel {
 		entry.log(PanicLevel, fmt.Sprint(args...))
 	}
 	panic(fmt.Sprint(args...))
@@ -174,13 +175,13 @@ func (entry *Entry) Panic(args ...interface{}) {
 // Entry Printf family functions
 
 func (entry *Entry) Debugf(format string, args ...interface{}) {
-	if entry.Logger.Level >= DebugLevel {
+	if entry.Logger.level() >= DebugLevel {
 		entry.Debug(fmt.Sprintf(format, args...))
 	}
 }
 
 func (entry *Entry) Infof(format string, args ...interface{}) {
-	if entry.Logger.Level >= InfoLevel {
+	if entry.Logger.level() >= InfoLevel {
 		entry.Info(fmt.Sprintf(format, args...))
 	}
 }
@@ -190,7 +191,7 @@ func (entry *Entry) Printf(format string, args ...interface{}) {
 }
 
 func (entry *Entry) Warnf(format string, args ...interface{}) {
-	if entry.Logger.Level >= WarnLevel {
+	if entry.Logger.level() >= WarnLevel {
 		entry.Warn(fmt.Sprintf(format, args...))
 	}
 }
@@ -200,20 +201,20 @@ func (entry *Entry) Warningf(format string, args ...interface{}) {
 }
 
 func (entry *Entry) Errorf(format string, args ...interface{}) {
-	if entry.Logger.Level >= ErrorLevel {
+	if entry.Logger.level() >= ErrorLevel {
 		entry.Error(fmt.Sprintf(format, args...))
 	}
 }
 
 func (entry *Entry) Fatalf(format string, args ...interface{}) {
-	if entry.Logger.Level >= FatalLevel {
+	if entry.Logger.level() >= FatalLevel {
 		entry.Fatal(fmt.Sprintf(format, args...))
 	}
 	Exit(1)
 }
 
 func (entry *Entry) Panicf(format string, args ...interface{}) {
-	if entry.Logger.Level >= PanicLevel {
+	if entry.Logger.level() >= PanicLevel {
 		entry.Panic(fmt.Sprintf(format, args...))
 	}
 }
@@ -221,13 +222,13 @@ func (entry *Entry) Panicf(format string, args ...interface{}) {
 // Entry Println family functions
 
 func (entry *Entry) Debugln(args ...interface{}) {
-	if entry.Logger.Level >= DebugLevel {
+	if entry.Logger.level() >= DebugLevel {
 		entry.Debug(entry.sprintlnn(args...))
 	}
 }
 
 func (entry *Entry) Infoln(args ...interface{}) {
-	if entry.Logger.Level >= InfoLevel {
+	if entry.Logger.level() >= InfoLevel {
 		entry.Info(entry.sprintlnn(args...))
 	}
 }
@@ -237,7 +238,7 @@ func (entry *Entry) Println(args ...interface{}) {
 }
 
 func (entry *Entry) Warnln(args ...interface{}) {
-	if entry.Logger.Level >= WarnLevel {
+	if entry.Logger.level() >= WarnLevel {
 		entry.Warn(entry.sprintlnn(args...))
 	}
 }
@@ -247,20 +248,20 @@ func (entry *Entry) Warningln(args ...interface{}) {
 }
 
 func (entry *Entry) Errorln(args ...interface{}) {
-	if entry.Logger.Level >= ErrorLevel {
+	if entry.Logger.level() >= ErrorLevel {
 		entry.Error(entry.sprintlnn(args...))
 	}
 }
 
 func (entry *Entry) Fatalln(args ...interface{}) {
-	if entry.Logger.Level >= FatalLevel {
+	if entry.Logger.level() >= FatalLevel {
 		entry.Fatal(entry.sprintlnn(args...))
 	}
 	Exit(1)
 }
 
 func (entry *Entry) Panicln(args ...interface{}) {
-	if entry.Logger.Level >= PanicLevel {
+	if entry.Logger.level() >= PanicLevel {
 		entry.Panic(entry.sprintlnn(args...))
 	}
 }

vendor/github.com/sirupsen/logrus/exported.go

@@ -31,14 +31,14 @@ func SetFormatter(formatter Formatter) {
 func SetLevel(level Level) {
 	std.mu.Lock()
 	defer std.mu.Unlock()
-	std.Level = level
+	std.SetLevel(level)
 }
 
 // GetLevel returns the standard logger level.
 func GetLevel() Level {
 	std.mu.Lock()
 	defer std.mu.Unlock()
-	return std.Level
+	return std.level()
 }
 
 // AddHook adds a hook to the standard logger hooks.

vendor/github.com/sirupsen/logrus/formatter.go

@@ -2,7 +2,7 @@ package logrus
 
 import "time"
 
-const DefaultTimestampFormat = time.RFC3339
+const defaultTimestampFormat = time.RFC3339
 
 // The Formatter interface is used to implement a custom Formatter. It takes an
 // `Entry`. It exposes all the fields, including the default ones:

vendor/github.com/sirupsen/logrus/json_formatter.go

@@ -6,8 +6,11 @@ import (
 )
 
 type fieldKey string
+
+// FieldMap allows customization of the key names for default fields.
 type FieldMap map[fieldKey]string
 
+// Default key names for the default fields
 const (
 	FieldKeyMsg   = "msg"
 	FieldKeyLevel = "level"
@@ -22,6 +25,7 @@ func (f FieldMap) resolve(key fieldKey) string {
 	return string(key)
 }
 
+// JSONFormatter formats logs into parsable json
 type JSONFormatter struct {
 	// TimestampFormat sets the format used for marshaling timestamps.
 	TimestampFormat string
@@ -29,25 +33,26 @@ type JSONFormatter struct {
 	// DisableTimestamp allows disabling automatic timestamps in output
 	DisableTimestamp bool
 
-	// FieldMap allows users to customize the names of keys for various fields.
+	// FieldMap allows users to customize the names of keys for default fields.
 	// As an example:
 	// formatter := &JSONFormatter{
 	//   	FieldMap: FieldMap{
 	// 		 FieldKeyTime: "@timestamp",
 	// 		 FieldKeyLevel: "@level",
-	// 		 FieldKeyLevel: "@message",
+	// 		 FieldKeyMsg: "@message",
 	//    },
 	// }
 	FieldMap FieldMap
 }
 
+// Format renders a single log entry
 func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) {
 	data := make(Fields, len(entry.Data)+3)
 	for k, v := range entry.Data {
 		switch v := v.(type) {
 		case error:
 			// Otherwise errors are ignored by `encoding/json`
-			// https://github.com/Sirupsen/logrus/issues/137
+			// https://github.com/sirupsen/logrus/issues/137
 			data[k] = v.Error()
 		default:
 			data[k] = v
@@ -57,7 +62,7 @@ func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) {
 
 	timestampFormat := f.TimestampFormat
 	if timestampFormat == "" {
-		timestampFormat = DefaultTimestampFormat
+		timestampFormat = defaultTimestampFormat
 	}
 
 	if !f.DisableTimestamp {

vendor/github.com/sirupsen/logrus/logger.go

@@ -4,6 +4,7 @@ import (
 	"io"
 	"os"
 	"sync"
+	"sync/atomic"
 )
 
 type Logger struct {
@@ -24,7 +25,7 @@ type Logger struct {
 	Formatter Formatter
 	// The logging level the logger should log at. This is typically (and defaults
 	// to) `logrus.Info`, which allows Info(), Warn(), Error() and Fatal() to be
-	// logged. `logrus.Debug` is useful in
+	// logged.
 	Level Level
 	// Used to sync writing to the log. Locking is enabled by Default
 	mu MutexWrap
@@ -112,7 +113,7 @@ func (logger *Logger) WithError(err error) *Entry {
 }
 
 func (logger *Logger) Debugf(format string, args ...interface{}) {
-	if logger.Level >= DebugLevel {
+	if logger.level() >= DebugLevel {
 		entry := logger.newEntry()
 		entry.Debugf(format, args...)
 		logger.releaseEntry(entry)
@@ -120,7 +121,7 @@ func (logger *Logger) Debugf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Infof(format string, args ...interface{}) {
-	if logger.Level >= InfoLevel {
+	if logger.level() >= InfoLevel {
 		entry := logger.newEntry()
 		entry.Infof(format, args...)
 		logger.releaseEntry(entry)
@@ -134,7 +135,7 @@ func (logger *Logger) Printf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Warnf(format string, args ...interface{}) {
-	if logger.Level >= WarnLevel {
+	if logger.level() >= WarnLevel {
 		entry := logger.newEntry()
 		entry.Warnf(format, args...)
 		logger.releaseEntry(entry)
@@ -142,7 +143,7 @@ func (logger *Logger) Warnf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Warningf(format string, args ...interface{}) {
-	if logger.Level >= WarnLevel {
+	if logger.level() >= WarnLevel {
 		entry := logger.newEntry()
 		entry.Warnf(format, args...)
 		logger.releaseEntry(entry)
@@ -150,7 +151,7 @@ func (logger *Logger) Warningf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Errorf(format string, args ...interface{}) {
-	if logger.Level >= ErrorLevel {
+	if logger.level() >= ErrorLevel {
 		entry := logger.newEntry()
 		entry.Errorf(format, args...)
 		logger.releaseEntry(entry)
@@ -158,7 +159,7 @@ func (logger *Logger) Errorf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Fatalf(format string, args ...interface{}) {
-	if logger.Level >= FatalLevel {
+	if logger.level() >= FatalLevel {
 		entry := logger.newEntry()
 		entry.Fatalf(format, args...)
 		logger.releaseEntry(entry)
@@ -167,7 +168,7 @@ func (logger *Logger) Fatalf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Panicf(format string, args ...interface{}) {
-	if logger.Level >= PanicLevel {
+	if logger.level() >= PanicLevel {
 		entry := logger.newEntry()
 		entry.Panicf(format, args...)
 		logger.releaseEntry(entry)
@@ -175,7 +176,7 @@ func (logger *Logger) Panicf(format string, args ...interface{}) {
 }
 
 func (logger *Logger) Debug(args ...interface{}) {
-	if logger.Level >= DebugLevel {
+	if logger.level() >= DebugLevel {
 		entry := logger.newEntry()
 		entry.Debug(args...)
 		logger.releaseEntry(entry)
@@ -183,7 +184,7 @@ func (logger *Logger) Debug(args ...interface{}) {
 }
 
 func (logger *Logger) Info(args ...interface{}) {
-	if logger.Level >= InfoLevel {
+	if logger.level() >= InfoLevel {
 		entry := logger.newEntry()
 		entry.Info(args...)
 		logger.releaseEntry(entry)
@@ -197,7 +198,7 @@ func (logger *Logger) Print(args ...interface{}) {
 }
 
 func (logger *Logger) Warn(args ...interface{}) {
-	if logger.Level >= WarnLevel {
+	if logger.level() >= WarnLevel {
 		entry := logger.newEntry()
 		entry.Warn(args...)
 		logger.releaseEntry(entry)
@@ -205,7 +206,7 @@ func (logger *Logger) Warn(args ...interface{}) {
 }
 
 func (logger *Logger) Warning(args ...interface{}) {
-	if logger.Level >= WarnLevel {
+	if logger.level() >= WarnLevel {
 		entry := logger.newEntry()
 		entry.Warn(args...)
 		logger.releaseEntry(entry)
@@ -213,7 +214,7 @@ func (logger *Logger) Warning(args ...interface{}) {
 }
 
 func (logger *Logger) Error(args ...interface{}) {
-	if logger.Level >= ErrorLevel {
+	if logger.level() >= ErrorLevel {
 		entry := logger.newEntry()
 		entry.Error(args...)
 		logger.releaseEntry(entry)
@@ -221,7 +222,7 @@ func (logger *Logger) Error(args ...interface{}) {
 }
 
 func (logger *Logger) Fatal(args ...interface{}) {
-	if logger.Level >= FatalLevel {
+	if logger.level() >= FatalLevel {
 		entry := logger.newEntry()
 		entry.Fatal(args...)
 		logger.releaseEntry(entry)
@@ -230,7 +231,7 @@ func (logger *Logger) Fatal(args ...interface{}) {
 }
 
 func (logger *Logger) Panic(args ...interface{}) {
-	if logger.Level >= PanicLevel {
+	if logger.level() >= PanicLevel {
 		entry := logger.newEntry()
 		entry.Panic(args...)
 		logger.releaseEntry(entry)
@@ -238,7 +239,7 @@ func (logger *Logger) Panic(args ...interface{}) {
 }
 
 func (logger *Logger) Debugln(args ...interface{}) {
-	if logger.Level >= DebugLevel {
+	if logger.level() >= DebugLevel {
 		entry := logger.newEntry()
 		entry.Debugln(args...)
 		logger.releaseEntry(entry)
@@ -246,7 +247,7 @@ func (logger *Logger) Debugln(args ...interface{}) {
 }
 
 func (logger *Logger) Infoln(args ...interface{}) {
-	if logger.Level >= InfoLevel {
+	if logger.level() >= InfoLevel {
 		entry := logger.newEntry()
 		entry.Infoln(args...)
 		logger.releaseEntry(entry)
@@ -260,7 +261,7 @@ func (logger *Logger) Println(args ...interface{}) {
 }
 
 func (logger *Logger) Warnln(args ...interface{}) {
-	if logger.Level >= WarnLevel {
+	if logger.level() >= WarnLevel {
 		entry := logger.newEntry()
 		entry.Warnln(args...)
 		logger.releaseEntry(entry)
@@ -268,7 +269,7 @@ func (logger *Logger) Warnln(args ...interface{}) {
 }
 
 func (logger *Logger) Warningln(args ...interface{}) {
-	if logger.Level >= WarnLevel {
+	if logger.level() >= WarnLevel {
 		entry := logger.newEntry()
 		entry.Warnln(args...)
 		logger.releaseEntry(entry)
@@ -276,7 +277,7 @@ func (logger *Logger) Warningln(args ...interface{}) {
 }
 
 func (logger *Logger) Errorln(args ...interface{}) {
-	if logger.Level >= ErrorLevel {
+	if logger.level() >= ErrorLevel {
 		entry := logger.newEntry()
 		entry.Errorln(args...)
 		logger.releaseEntry(entry)
@@ -284,7 +285,7 @@ func (logger *Logger) Errorln(args ...interface{}) {
 }
 
 func (logger *Logger) Fatalln(args ...interface{}) {
-	if logger.Level >= FatalLevel {
+	if logger.level() >= FatalLevel {
 		entry := logger.newEntry()
 		entry.Fatalln(args...)
 		logger.releaseEntry(entry)
@@ -293,7 +294,7 @@ func (logger *Logger) Fatalln(args ...interface{}) {
 }
 
 func (logger *Logger) Panicln(args ...interface{}) {
-	if logger.Level >= PanicLevel {
+	if logger.level() >= PanicLevel {
 		entry := logger.newEntry()
 		entry.Panicln(args...)
 		logger.releaseEntry(entry)
@@ -306,3 +307,11 @@ func (logger *Logger) Panicln(args ...interface{}) {
 func (logger *Logger) SetNoLock() {
 	logger.mu.Disable()
 }
+
+func (logger *Logger) level() Level {
+	return Level(atomic.LoadUint32((*uint32)(&logger.Level)))
+}
+
+func (logger *Logger) SetLevel(level Level) {
+	atomic.StoreUint32((*uint32)(&logger.Level), uint32(level))
+}

vendor/github.com/sirupsen/logrus/logrus.go

@@ -10,7 +10,7 @@ import (
 type Fields map[string]interface{}
 
 // Level type
-type Level uint8
+type Level uint32
 
 // Convert the Level to a string. E.g. PanicLevel becomes "panic".
 func (level Level) String() string {

vendor/github.com/sirupsen/logrus/terminal_appengine.go

@@ -1,10 +0,0 @@
-// +build appengine
-
-package logrus
-
-import "io"
-
-// IsTerminal returns true if stderr's file descriptor is a terminal.
-func IsTerminal(f io.Writer) bool {
-	return true
-}

vendor/github.com/sirupsen/logrus/terminal_bsd.go

@@ -3,8 +3,8 @@
 
 package logrus
 
-import "syscall"
+import "golang.org/x/sys/unix"
 
-const ioctlReadTermios = syscall.TIOCGETA
+const ioctlReadTermios = unix.TIOCGETA
 
-type Termios syscall.Termios
+type Termios unix.Termios

vendor/github.com/sirupsen/logrus/terminal_linux.go

@@ -7,8 +7,8 @@
 
 package logrus
 
-import "syscall"
+import "golang.org/x/sys/unix"
 
-const ioctlReadTermios = syscall.TCGETS
+const ioctlReadTermios = unix.TCGETS
 
-type Termios syscall.Termios
+type Termios unix.Termios

vendor/github.com/sirupsen/logrus/terminal_notwindows.go

@@ -1,28 +0,0 @@
-// Based on ssh/terminal:
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build linux darwin freebsd openbsd netbsd dragonfly
-// +build !appengine
-
-package logrus
-
-import (
-	"io"
-	"os"
-	"syscall"
-	"unsafe"
-)
-
-// IsTerminal returns true if stderr's file descriptor is a terminal.
-func IsTerminal(f io.Writer) bool {
-	var termios Termios
-	switch v := f.(type) {
-	case *os.File:
-		_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(v.Fd()), ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
-		return err == 0
-	default:
-		return false
-	}
-}

vendor/github.com/sirupsen/logrus/terminal_solaris.go

@@ -1,21 +0,0 @@
-// +build solaris,!appengine
-
-package logrus
-
-import (
-	"io"
-	"os"
-
-	"golang.org/x/sys/unix"
-)
-
-// IsTerminal returns true if the given file descriptor is a terminal.
-func IsTerminal(f io.Writer) bool {
-	switch v := f.(type) {
-	case *os.File:
-		_, err := unix.IoctlGetTermios(int(v.Fd()), unix.TCGETA)
-		return err == nil
-	default:
-		return false
-	}
-}

vendor/github.com/sirupsen/logrus/terminal_windows.go

@@ -1,33 +0,0 @@
-// Based on ssh/terminal:
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build windows,!appengine
-
-package logrus
-
-import (
-	"io"
-	"os"
-	"syscall"
-	"unsafe"
-)
-
-var kernel32 = syscall.NewLazyDLL("kernel32.dll")
-
-var (
-	procGetConsoleMode = kernel32.NewProc("GetConsoleMode")
-)
-
-// IsTerminal returns true if stderr's file descriptor is a terminal.
-func IsTerminal(f io.Writer) bool {
-	switch v := f.(type) {
-	case *os.File:
-		var st uint32
-		r, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(v.Fd()), uintptr(unsafe.Pointer(&st)), 0)
-		return r != 0 && e == 0
-	default:
-		return false
-	}
-}

vendor/github.com/sirupsen/logrus/text_formatter.go

@@ -3,10 +3,14 @@ package logrus
 import (
 	"bytes"
 	"fmt"
+	"io"
+	"os"
 	"sort"
 	"strings"
 	"sync"
 	"time"
+
+	"golang.org/x/crypto/ssh/terminal"
 )
 
 const (
@@ -14,7 +18,7 @@ const (
 	red     = 31
 	green   = 32
 	yellow  = 33
-	blue    = 34
+	blue    = 36
 	gray    = 37
 )
 
@@ -26,6 +30,7 @@ func init() {
 	baseTimestamp = time.Now()
 }
 
+// TextFormatter formats logs into text
 type TextFormatter struct {
 	// Set to true to bypass checking for a TTY before outputting colors.
 	ForceColors bool
@@ -52,10 +57,6 @@ type TextFormatter struct {
 	// QuoteEmptyFields will wrap empty fields in quotes if true
 	QuoteEmptyFields bool
 
-	// QuoteCharacter can be set to the override the default quoting character "
-	// with something else. For example: ', or `.
-	QuoteCharacter string
-
 	// Whether the logger's out is to a terminal
 	isTerminal bool
 
@@ -63,14 +64,21 @@ type TextFormatter struct {
 }
 
 func (f *TextFormatter) init(entry *Entry) {
-	if len(f.QuoteCharacter) == 0 {
-		f.QuoteCharacter = "\""
-	}
 	if entry.Logger != nil {
-		f.isTerminal = IsTerminal(entry.Logger.Out)
+		f.isTerminal = f.checkIfTerminal(entry.Logger.Out)
 	}
 }
 
+func (f *TextFormatter) checkIfTerminal(w io.Writer) bool {
+	switch v := w.(type) {
+	case *os.File:
+		return terminal.IsTerminal(int(v.Fd()))
+	default:
+		return false
+	}
+}
+
+// Format renders a single log entry
 func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 	var b *bytes.Buffer
 	keys := make([]string, 0, len(entry.Data))
@@ -95,7 +103,7 @@ func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 
 	timestampFormat := f.TimestampFormat
 	if timestampFormat == "" {
-		timestampFormat = DefaultTimestampFormat
+		timestampFormat = defaultTimestampFormat
 	}
 	if isColored {
 		f.printColored(b, entry, keys, timestampFormat)
@@ -153,7 +161,7 @@ func (f *TextFormatter) needsQuoting(text string) bool {
 		if !((ch >= 'a' && ch <= 'z') ||
 			(ch >= 'A' && ch <= 'Z') ||
 			(ch >= '0' && ch <= '9') ||
-			ch == '-' || ch == '.') {
+			ch == '-' || ch == '.' || ch == '_' || ch == '/' || ch == '@' || ch == '^' || ch == '+') {
 			return true
 		}
 	}
@@ -161,29 +169,23 @@ func (f *TextFormatter) needsQuoting(text string) bool {
 }
 
 func (f *TextFormatter) appendKeyValue(b *bytes.Buffer, key string, value interface{}) {
-
+	if b.Len() > 0 {
+		b.WriteByte(' ')
+	}
 	b.WriteString(key)
 	b.WriteByte('=')
 	f.appendValue(b, value)
-	b.WriteByte(' ')
 }
 
 func (f *TextFormatter) appendValue(b *bytes.Buffer, value interface{}) {
-	switch value := value.(type) {
-	case string:
-		if !f.needsQuoting(value) {
-			b.WriteString(value)
-		} else {
-			fmt.Fprintf(b, "%s%v%s", f.QuoteCharacter, value, f.QuoteCharacter)
-		}
-	case error:
-		errmsg := value.Error()
-		if !f.needsQuoting(errmsg) {
-			b.WriteString(errmsg)
-		} else {
-			fmt.Fprintf(b, "%s%v%s", f.QuoteCharacter, errmsg, f.QuoteCharacter)
-		}
-	default:
-		fmt.Fprint(b, value)
+	stringVal, ok := value.(string)
+	if !ok {
+		stringVal = fmt.Sprint(value)
+	}
+
+	if !f.needsQuoting(stringVal) {
+		b.WriteString(stringVal)
+	} else {
+		b.WriteString(fmt.Sprintf("%q", stringVal))
 	}
 }

vendor/github.com/sirupsen/logrus/writer.go

@@ -11,39 +11,48 @@ func (logger *Logger) Writer() *io.PipeWriter {
 }
 
 func (logger *Logger) WriterLevel(level Level) *io.PipeWriter {
+	return NewEntry(logger).WriterLevel(level)
+}
+
+func (entry *Entry) Writer() *io.PipeWriter {
+	return entry.WriterLevel(InfoLevel)
+}
+
+func (entry *Entry) WriterLevel(level Level) *io.PipeWriter {
 	reader, writer := io.Pipe()
 
 	var printFunc func(args ...interface{})
+
 	switch level {
 	case DebugLevel:
-		printFunc = logger.Debug
+		printFunc = entry.Debug
 	case InfoLevel:
-		printFunc = logger.Info
+		printFunc = entry.Info
 	case WarnLevel:
-		printFunc = logger.Warn
+		printFunc = entry.Warn
 	case ErrorLevel:
-		printFunc = logger.Error
+		printFunc = entry.Error
 	case FatalLevel:
-		printFunc = logger.Fatal
+		printFunc = entry.Fatal
 	case PanicLevel:
-		printFunc = logger.Panic
+		printFunc = entry.Panic
 	default:
-		printFunc = logger.Print
+		printFunc = entry.Print
 	}
 
-	go logger.writerScanner(reader, printFunc)
+	go entry.writerScanner(reader, printFunc)
 	runtime.SetFinalizer(writer, writerFinalizer)
 
 	return writer
 }
 
-func (logger *Logger) writerScanner(reader *io.PipeReader, printFunc func(args ...interface{})) {
+func (entry *Entry) writerScanner(reader *io.PipeReader, printFunc func(args ...interface{})) {
 	scanner := bufio.NewScanner(reader)
 	for scanner.Scan() {
 		printFunc(scanner.Text())
 	}
 	if err := scanner.Err(); err != nil {
-		logger.Errorf("Error while reading from Writer: %s", err)
+		entry.Errorf("Error while reading from Writer: %s", err)
 	}
 	reader.Close()
 }

vendor/golang.org/x/crypto/LICENSE

@@ -0,0 +1,27 @@
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/golang.org/x/crypto/PATENTS

@@ -0,0 +1,22 @@
+Additional IP Rights Grant (Patents)
+
+"This implementation" means the copyrightable works distributed by
+Google as part of the Go project.
+
+Google hereby grants to You a perpetual, worldwide, non-exclusive,
+no-charge, royalty-free, irrevocable (except as stated in this section)
+patent license to make, have made, use, offer to sell, sell, import,
+transfer and otherwise run, modify and propagate the contents of this
+implementation of Go, where such license applies only to those patent
+claims, both currently owned or controlled by Google and acquired in
+the future, licensable by Google that are necessarily infringed by this
+implementation of Go.  This grant does not include claims that would be
+infringed only as a consequence of further modification of this
+implementation.  If you or your agent or exclusive licensee institute or
+order or agree to the institution of patent litigation against any
+entity (including a cross-claim or counterclaim in a lawsuit) alleging
+that this implementation of Go or any code incorporated within this
+implementation of Go constitutes direct or contributory patent
+infringement, or inducement of patent infringement, then any patent
+rights granted to you under this License for this implementation of Go
+shall terminate as of the date such litigation is filed.

vendor/golang.org/x/crypto/ssh/terminal/terminal.go

@@ -0,0 +1,951 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package terminal
+
+import (
+	"bytes"
+	"io"
+	"sync"
+	"unicode/utf8"
+)
+
+// EscapeCodes contains escape sequences that can be written to the terminal in
+// order to achieve different styles of text.
+type EscapeCodes struct {
+	// Foreground colors
+	Black, Red, Green, Yellow, Blue, Magenta, Cyan, White []byte
+
+	// Reset all attributes
+	Reset []byte
+}
+
+var vt100EscapeCodes = EscapeCodes{
+	Black:   []byte{keyEscape, '[', '3', '0', 'm'},
+	Red:     []byte{keyEscape, '[', '3', '1', 'm'},
+	Green:   []byte{keyEscape, '[', '3', '2', 'm'},
+	Yellow:  []byte{keyEscape, '[', '3', '3', 'm'},
+	Blue:    []byte{keyEscape, '[', '3', '4', 'm'},
+	Magenta: []byte{keyEscape, '[', '3', '5', 'm'},
+	Cyan:    []byte{keyEscape, '[', '3', '6', 'm'},
+	White:   []byte{keyEscape, '[', '3', '7', 'm'},
+
+	Reset: []byte{keyEscape, '[', '0', 'm'},
+}
+
+// Terminal contains the state for running a VT100 terminal that is capable of
+// reading lines of input.
+type Terminal struct {
+	// AutoCompleteCallback, if non-null, is called for each keypress with
+	// the full input line and the current position of the cursor (in
+	// bytes, as an index into |line|). If it returns ok=false, the key
+	// press is processed normally. Otherwise it returns a replacement line
+	// and the new cursor position.
+	AutoCompleteCallback func(line string, pos int, key rune) (newLine string, newPos int, ok bool)
+
+	// Escape contains a pointer to the escape codes for this terminal.
+	// It's always a valid pointer, although the escape codes themselves
+	// may be empty if the terminal doesn't support them.
+	Escape *EscapeCodes
+
+	// lock protects the terminal and the state in this object from
+	// concurrent processing of a key press and a Write() call.
+	lock sync.Mutex
+
+	c      io.ReadWriter
+	prompt []rune
+
+	// line is the current line being entered.
+	line []rune
+	// pos is the logical position of the cursor in line
+	pos int
+	// echo is true if local echo is enabled
+	echo bool
+	// pasteActive is true iff there is a bracketed paste operation in
+	// progress.
+	pasteActive bool
+
+	// cursorX contains the current X value of the cursor where the left
+	// edge is 0. cursorY contains the row number where the first row of
+	// the current line is 0.
+	cursorX, cursorY int
+	// maxLine is the greatest value of cursorY so far.
+	maxLine int
+
+	termWidth, termHeight int
+
+	// outBuf contains the terminal data to be sent.
+	outBuf []byte
+	// remainder contains the remainder of any partial key sequences after
+	// a read. It aliases into inBuf.
+	remainder []byte
+	inBuf     [256]byte
+
+	// history contains previously entered commands so that they can be
+	// accessed with the up and down keys.
+	history stRingBuffer
+	// historyIndex stores the currently accessed history entry, where zero
+	// means the immediately previous entry.
+	historyIndex int
+	// When navigating up and down the history it's possible to return to
+	// the incomplete, initial line. That value is stored in
+	// historyPending.
+	historyPending string
+}
+
+// NewTerminal runs a VT100 terminal on the given ReadWriter. If the ReadWriter is
+// a local terminal, that terminal must first have been put into raw mode.
+// prompt is a string that is written at the start of each input line (i.e.
+// "> ").
+func NewTerminal(c io.ReadWriter, prompt string) *Terminal {
+	return &Terminal{
+		Escape:       &vt100EscapeCodes,
+		c:            c,
+		prompt:       []rune(prompt),
+		termWidth:    80,
+		termHeight:   24,
+		echo:         true,
+		historyIndex: -1,
+	}
+}
+
+const (
+	keyCtrlD     = 4
+	keyCtrlU     = 21
+	keyEnter     = '\r'
+	keyEscape    = 27
+	keyBackspace = 127
+	keyUnknown   = 0xd800 /* UTF-16 surrogate area */ + iota
+	keyUp
+	keyDown
+	keyLeft
+	keyRight
+	keyAltLeft
+	keyAltRight
+	keyHome
+	keyEnd
+	keyDeleteWord
+	keyDeleteLine
+	keyClearScreen
+	keyPasteStart
+	keyPasteEnd
+)
+
+var (
+	crlf       = []byte{'\r', '\n'}
+	pasteStart = []byte{keyEscape, '[', '2', '0', '0', '~'}
+	pasteEnd   = []byte{keyEscape, '[', '2', '0', '1', '~'}
+)
+
+// bytesToKey tries to parse a key sequence from b. If successful, it returns
+// the key and the remainder of the input. Otherwise it returns utf8.RuneError.
+func bytesToKey(b []byte, pasteActive bool) (rune, []byte) {
+	if len(b) == 0 {
+		return utf8.RuneError, nil
+	}
+
+	if !pasteActive {
+		switch b[0] {
+		case 1: // ^A
+			return keyHome, b[1:]
+		case 5: // ^E
+			return keyEnd, b[1:]
+		case 8: // ^H
+			return keyBackspace, b[1:]
+		case 11: // ^K
+			return keyDeleteLine, b[1:]
+		case 12: // ^L
+			return keyClearScreen, b[1:]
+		case 23: // ^W
+			return keyDeleteWord, b[1:]
+		}
+	}
+
+	if b[0] != keyEscape {
+		if !utf8.FullRune(b) {
+			return utf8.RuneError, b
+		}
+		r, l := utf8.DecodeRune(b)
+		return r, b[l:]
+	}
+
+	if !pasteActive && len(b) >= 3 && b[0] == keyEscape && b[1] == '[' {
+		switch b[2] {
+		case 'A':
+			return keyUp, b[3:]
+		case 'B':
+			return keyDown, b[3:]
+		case 'C':
+			return keyRight, b[3:]
+		case 'D':
+			return keyLeft, b[3:]
+		case 'H':
+			return keyHome, b[3:]
+		case 'F':
+			return keyEnd, b[3:]
+		}
+	}
+
+	if !pasteActive && len(b) >= 6 && b[0] == keyEscape && b[1] == '[' && b[2] == '1' && b[3] == ';' && b[4] == '3' {
+		switch b[5] {
+		case 'C':
+			return keyAltRight, b[6:]
+		case 'D':
+			return keyAltLeft, b[6:]
+		}
+	}
+
+	if !pasteActive && len(b) >= 6 && bytes.Equal(b[:6], pasteStart) {
+		return keyPasteStart, b[6:]
+	}
+
+	if pasteActive && len(b) >= 6 && bytes.Equal(b[:6], pasteEnd) {
+		return keyPasteEnd, b[6:]
+	}
+
+	// If we get here then we have a key that we don't recognise, or a
+	// partial sequence. It's not clear how one should find the end of a
+	// sequence without knowing them all, but it seems that [a-zA-Z~] only
+	// appears at the end of a sequence.
+	for i, c := range b[0:] {
+		if c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z' || c == '~' {
+			return keyUnknown, b[i+1:]
+		}
+	}
+
+	return utf8.RuneError, b
+}
+
+// queue appends data to the end of t.outBuf
+func (t *Terminal) queue(data []rune) {
+	t.outBuf = append(t.outBuf, []byte(string(data))...)
+}
+
+var eraseUnderCursor = []rune{' ', keyEscape, '[', 'D'}
+var space = []rune{' '}
+
+func isPrintable(key rune) bool {
+	isInSurrogateArea := key >= 0xd800 && key <= 0xdbff
+	return key >= 32 && !isInSurrogateArea
+}
+
+// moveCursorToPos appends data to t.outBuf which will move the cursor to the
+// given, logical position in the text.
+func (t *Terminal) moveCursorToPos(pos int) {
+	if !t.echo {
+		return
+	}
+
+	x := visualLength(t.prompt) + pos
+	y := x / t.termWidth
+	x = x % t.termWidth
+
+	up := 0
+	if y < t.cursorY {
+		up = t.cursorY - y
+	}
+
+	down := 0
+	if y > t.cursorY {
+		down = y - t.cursorY
+	}
+
+	left := 0
+	if x < t.cursorX {
+		left = t.cursorX - x
+	}
+
+	right := 0
+	if x > t.cursorX {
+		right = x - t.cursorX
+	}
+
+	t.cursorX = x
+	t.cursorY = y
+	t.move(up, down, left, right)
+}
+
+func (t *Terminal) move(up, down, left, right int) {
+	movement := make([]rune, 3*(up+down+left+right))
+	m := movement
+	for i := 0; i < up; i++ {
+		m[0] = keyEscape
+		m[1] = '['
+		m[2] = 'A'
+		m = m[3:]
+	}
+	for i := 0; i < down; i++ {
+		m[0] = keyEscape
+		m[1] = '['
+		m[2] = 'B'
+		m = m[3:]
+	}
+	for i := 0; i < left; i++ {
+		m[0] = keyEscape
+		m[1] = '['
+		m[2] = 'D'
+		m = m[3:]
+	}
+	for i := 0; i < right; i++ {
+		m[0] = keyEscape
+		m[1] = '['
+		m[2] = 'C'
+		m = m[3:]
+	}
+
+	t.queue(movement)
+}
+
+func (t *Terminal) clearLineToRight() {
+	op := []rune{keyEscape, '[', 'K'}
+	t.queue(op)
+}
+
+const maxLineLength = 4096
+
+func (t *Terminal) setLine(newLine []rune, newPos int) {
+	if t.echo {
+		t.moveCursorToPos(0)
+		t.writeLine(newLine)
+		for i := len(newLine); i < len(t.line); i++ {
+			t.writeLine(space)
+		}
+		t.moveCursorToPos(newPos)
+	}
+	t.line = newLine
+	t.pos = newPos
+}
+
+func (t *Terminal) advanceCursor(places int) {
+	t.cursorX += places
+	t.cursorY += t.cursorX / t.termWidth
+	if t.cursorY > t.maxLine {
+		t.maxLine = t.cursorY
+	}
+	t.cursorX = t.cursorX % t.termWidth
+
+	if places > 0 && t.cursorX == 0 {
+		// Normally terminals will advance the current position
+		// when writing a character. But that doesn't happen
+		// for the last character in a line. However, when
+		// writing a character (except a new line) that causes
+		// a line wrap, the position will be advanced two
+		// places.
+		//
+		// So, if we are stopping at the end of a line, we
+		// need to write a newline so that our cursor can be
+		// advanced to the next line.
+		t.outBuf = append(t.outBuf, '\r', '\n')
+	}
+}
+
+func (t *Terminal) eraseNPreviousChars(n int) {
+	if n == 0 {
+		return
+	}
+
+	if t.pos < n {
+		n = t.pos
+	}
+	t.pos -= n
+	t.moveCursorToPos(t.pos)
+
+	copy(t.line[t.pos:], t.line[n+t.pos:])
+	t.line = t.line[:len(t.line)-n]
+	if t.echo {
+		t.writeLine(t.line[t.pos:])
+		for i := 0; i < n; i++ {
+			t.queue(space)
+		}
+		t.advanceCursor(n)
+		t.moveCursorToPos(t.pos)
+	}
+}
+
+// countToLeftWord returns then number of characters from the cursor to the
+// start of the previous word.
+func (t *Terminal) countToLeftWord() int {
+	if t.pos == 0 {
+		return 0
+	}
+
+	pos := t.pos - 1
+	for pos > 0 {
+		if t.line[pos] != ' ' {
+			break
+		}
+		pos--
+	}
+	for pos > 0 {
+		if t.line[pos] == ' ' {
+			pos++
+			break
+		}
+		pos--
+	}
+
+	return t.pos - pos
+}
+
+// countToRightWord returns then number of characters from the cursor to the
+// start of the next word.
+func (t *Terminal) countToRightWord() int {
+	pos := t.pos
+	for pos < len(t.line) {
+		if t.line[pos] == ' ' {
+			break
+		}
+		pos++
+	}
+	for pos < len(t.line) {
+		if t.line[pos] != ' ' {
+			break
+		}
+		pos++
+	}
+	return pos - t.pos
+}
+
+// visualLength returns the number of visible glyphs in s.
+func visualLength(runes []rune) int {
+	inEscapeSeq := false
+	length := 0
+
+	for _, r := range runes {
+		switch {
+		case inEscapeSeq:
+			if (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z') {
+				inEscapeSeq = false
+			}
+		case r == '\x1b':
+			inEscapeSeq = true
+		default:
+			length++
+		}
+	}
+
+	return length
+}
+
+// handleKey processes the given key and, optionally, returns a line of text
+// that the user has entered.
+func (t *Terminal) handleKey(key rune) (line string, ok bool) {
+	if t.pasteActive && key != keyEnter {
+		t.addKeyToLine(key)
+		return
+	}
+
+	switch key {
+	case keyBackspace:
+		if t.pos == 0 {
+			return
+		}
+		t.eraseNPreviousChars(1)
+	case keyAltLeft:
+		// move left by a word.
+		t.pos -= t.countToLeftWord()
+		t.moveCursorToPos(t.pos)
+	case keyAltRight:
+		// move right by a word.
+		t.pos += t.countToRightWord()
+		t.moveCursorToPos(t.pos)
+	case keyLeft:
+		if t.pos == 0 {
+			return
+		}
+		t.pos--
+		t.moveCursorToPos(t.pos)
+	case keyRight:
+		if t.pos == len(t.line) {
+			return
+		}
+		t.pos++
+		t.moveCursorToPos(t.pos)
+	case keyHome:
+		if t.pos == 0 {
+			return
+		}
+		t.pos = 0
+		t.moveCursorToPos(t.pos)
+	case keyEnd:
+		if t.pos == len(t.line) {
+			return
+		}
+		t.pos = len(t.line)
+		t.moveCursorToPos(t.pos)
+	case keyUp:
+		entry, ok := t.history.NthPreviousEntry(t.historyIndex + 1)
+		if !ok {
+			return "", false
+		}
+		if t.historyIndex == -1 {
+			t.historyPending = string(t.line)
+		}
+		t.historyIndex++
+		runes := []rune(entry)
+		t.setLine(runes, len(runes))
+	case keyDown:
+		switch t.historyIndex {
+		case -1:
+			return
+		case 0:
+			runes := []rune(t.historyPending)
+			t.setLine(runes, len(runes))
+			t.historyIndex--
+		default:
+			entry, ok := t.history.NthPreviousEntry(t.historyIndex - 1)
+			if ok {
+				t.historyIndex--
+				runes := []rune(entry)
+				t.setLine(runes, len(runes))
+			}
+		}
+	case keyEnter:
+		t.moveCursorToPos(len(t.line))
+		t.queue([]rune("\r\n"))
+		line = string(t.line)
+		ok = true
+		t.line = t.line[:0]
+		t.pos = 0
+		t.cursorX = 0
+		t.cursorY = 0
+		t.maxLine = 0
+	case keyDeleteWord:
+		// Delete zero or more spaces and then one or more characters.
+		t.eraseNPreviousChars(t.countToLeftWord())
+	case keyDeleteLine:
+		// Delete everything from the current cursor position to the
+		// end of line.
+		for i := t.pos; i < len(t.line); i++ {
+			t.queue(space)
+			t.advanceCursor(1)
+		}
+		t.line = t.line[:t.pos]
+		t.moveCursorToPos(t.pos)
+	case keyCtrlD:
+		// Erase the character under the current position.
+		// The EOF case when the line is empty is handled in
+		// readLine().
+		if t.pos < len(t.line) {
+			t.pos++
+			t.eraseNPreviousChars(1)
+		}
+	case keyCtrlU:
+		t.eraseNPreviousChars(t.pos)
+	case keyClearScreen:
+		// Erases the screen and moves the cursor to the home position.
+		t.queue([]rune("\x1b[2J\x1b[H"))
+		t.queue(t.prompt)
+		t.cursorX, t.cursorY = 0, 0
+		t.advanceCursor(visualLength(t.prompt))
+		t.setLine(t.line, t.pos)
+	default:
+		if t.AutoCompleteCallback != nil {
+			prefix := string(t.line[:t.pos])
+			suffix := string(t.line[t.pos:])
+
+			t.lock.Unlock()
+			newLine, newPos, completeOk := t.AutoCompleteCallback(prefix+suffix, len(prefix), key)
+			t.lock.Lock()
+
+			if completeOk {
+				t.setLine([]rune(newLine), utf8.RuneCount([]byte(newLine)[:newPos]))
+				return
+			}
+		}
+		if !isPrintable(key) {
+			return
+		}
+		if len(t.line) == maxLineLength {
+			return
+		}
+		t.addKeyToLine(key)
+	}
+	return
+}
+
+// addKeyToLine inserts the given key at the current position in the current
+// line.
+func (t *Terminal) addKeyToLine(key rune) {
+	if len(t.line) == cap(t.line) {
+		newLine := make([]rune, len(t.line), 2*(1+len(t.line)))
+		copy(newLine, t.line)
+		t.line = newLine
+	}
+	t.line = t.line[:len(t.line)+1]
+	copy(t.line[t.pos+1:], t.line[t.pos:])
+	t.line[t.pos] = key
+	if t.echo {
+		t.writeLine(t.line[t.pos:])
+	}
+	t.pos++
+	t.moveCursorToPos(t.pos)
+}
+
+func (t *Terminal) writeLine(line []rune) {
+	for len(line) != 0 {
+		remainingOnLine := t.termWidth - t.cursorX
+		todo := len(line)
+		if todo > remainingOnLine {
+			todo = remainingOnLine
+		}
+		t.queue(line[:todo])
+		t.advanceCursor(visualLength(line[:todo]))
+		line = line[todo:]
+	}
+}
+
+// writeWithCRLF writes buf to w but replaces all occurrences of \n with \r\n.
+func writeWithCRLF(w io.Writer, buf []byte) (n int, err error) {
+	for len(buf) > 0 {
+		i := bytes.IndexByte(buf, '\n')
+		todo := len(buf)
+		if i >= 0 {
+			todo = i
+		}
+
+		var nn int
+		nn, err = w.Write(buf[:todo])
+		n += nn
+		if err != nil {
+			return n, err
+		}
+		buf = buf[todo:]
+
+		if i >= 0 {
+			if _, err = w.Write(crlf); err != nil {
+				return n, err
+			}
+			n += 1
+			buf = buf[1:]
+		}
+	}
+
+	return n, nil
+}
+
+func (t *Terminal) Write(buf []byte) (n int, err error) {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	if t.cursorX == 0 && t.cursorY == 0 {
+		// This is the easy case: there's nothing on the screen that we
+		// have to move out of the way.
+		return writeWithCRLF(t.c, buf)
+	}
+
+	// We have a prompt and possibly user input on the screen. We
+	// have to clear it first.
+	t.move(0 /* up */, 0 /* down */, t.cursorX /* left */, 0 /* right */)
+	t.cursorX = 0
+	t.clearLineToRight()
+
+	for t.cursorY > 0 {
+		t.move(1 /* up */, 0, 0, 0)
+		t.cursorY--
+		t.clearLineToRight()
+	}
+
+	if _, err = t.c.Write(t.outBuf); err != nil {
+		return
+	}
+	t.outBuf = t.outBuf[:0]
+
+	if n, err = writeWithCRLF(t.c, buf); err != nil {
+		return
+	}
+
+	t.writeLine(t.prompt)
+	if t.echo {
+		t.writeLine(t.line)
+	}
+
+	t.moveCursorToPos(t.pos)
+
+	if _, err = t.c.Write(t.outBuf); err != nil {
+		return
+	}
+	t.outBuf = t.outBuf[:0]
+	return
+}
+
+// ReadPassword temporarily changes the prompt and reads a password, without
+// echo, from the terminal.
+func (t *Terminal) ReadPassword(prompt string) (line string, err error) {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	oldPrompt := t.prompt
+	t.prompt = []rune(prompt)
+	t.echo = false
+
+	line, err = t.readLine()
+
+	t.prompt = oldPrompt
+	t.echo = true
+
+	return
+}
+
+// ReadLine returns a line of input from the terminal.
+func (t *Terminal) ReadLine() (line string, err error) {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	return t.readLine()
+}
+
+func (t *Terminal) readLine() (line string, err error) {
+	// t.lock must be held at this point
+
+	if t.cursorX == 0 && t.cursorY == 0 {
+		t.writeLine(t.prompt)
+		t.c.Write(t.outBuf)
+		t.outBuf = t.outBuf[:0]
+	}
+
+	lineIsPasted := t.pasteActive
+
+	for {
+		rest := t.remainder
+		lineOk := false
+		for !lineOk {
+			var key rune
+			key, rest = bytesToKey(rest, t.pasteActive)
+			if key == utf8.RuneError {
+				break
+			}
+			if !t.pasteActive {
+				if key == keyCtrlD {
+					if len(t.line) == 0 {
+						return "", io.EOF
+					}
+				}
+				if key == keyPasteStart {
+					t.pasteActive = true
+					if len(t.line) == 0 {
+						lineIsPasted = true
+					}
+					continue
+				}
+			} else if key == keyPasteEnd {
+				t.pasteActive = false
+				continue
+			}
+			if !t.pasteActive {
+				lineIsPasted = false
+			}
+			line, lineOk = t.handleKey(key)
+		}
+		if len(rest) > 0 {
+			n := copy(t.inBuf[:], rest)
+			t.remainder = t.inBuf[:n]
+		} else {
+			t.remainder = nil
+		}
+		t.c.Write(t.outBuf)
+		t.outBuf = t.outBuf[:0]
+		if lineOk {
+			if t.echo {
+				t.historyIndex = -1
+				t.history.Add(line)
+			}
+			if lineIsPasted {
+				err = ErrPasteIndicator
+			}
+			return
+		}
+
+		// t.remainder is a slice at the beginning of t.inBuf
+		// containing a partial key sequence
+		readBuf := t.inBuf[len(t.remainder):]
+		var n int
+
+		t.lock.Unlock()
+		n, err = t.c.Read(readBuf)
+		t.lock.Lock()
+
+		if err != nil {
+			return
+		}
+
+		t.remainder = t.inBuf[:n+len(t.remainder)]
+	}
+}
+
+// SetPrompt sets the prompt to be used when reading subsequent lines.
+func (t *Terminal) SetPrompt(prompt string) {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	t.prompt = []rune(prompt)
+}
+
+func (t *Terminal) clearAndRepaintLinePlusNPrevious(numPrevLines int) {
+	// Move cursor to column zero at the start of the line.
+	t.move(t.cursorY, 0, t.cursorX, 0)
+	t.cursorX, t.cursorY = 0, 0
+	t.clearLineToRight()
+	for t.cursorY < numPrevLines {
+		// Move down a line
+		t.move(0, 1, 0, 0)
+		t.cursorY++
+		t.clearLineToRight()
+	}
+	// Move back to beginning.
+	t.move(t.cursorY, 0, 0, 0)
+	t.cursorX, t.cursorY = 0, 0
+
+	t.queue(t.prompt)
+	t.advanceCursor(visualLength(t.prompt))
+	t.writeLine(t.line)
+	t.moveCursorToPos(t.pos)
+}
+
+func (t *Terminal) SetSize(width, height int) error {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	if width == 0 {
+		width = 1
+	}
+
+	oldWidth := t.termWidth
+	t.termWidth, t.termHeight = width, height
+
+	switch {
+	case width == oldWidth:
+		// If the width didn't change then nothing else needs to be
+		// done.
+		return nil
+	case len(t.line) == 0 && t.cursorX == 0 && t.cursorY == 0:
+		// If there is nothing on current line and no prompt printed,
+		// just do nothing
+		return nil
+	case width < oldWidth:
+		// Some terminals (e.g. xterm) will truncate lines that were
+		// too long when shinking. Others, (e.g. gnome-terminal) will
+		// attempt to wrap them. For the former, repainting t.maxLine
+		// works great, but that behaviour goes badly wrong in the case
+		// of the latter because they have doubled every full line.
+
+		// We assume that we are working on a terminal that wraps lines
+		// and adjust the cursor position based on every previous line
+		// wrapping and turning into two. This causes the prompt on
+		// xterms to move upwards, which isn't great, but it avoids a
+		// huge mess with gnome-terminal.
+		if t.cursorX >= t.termWidth {
+			t.cursorX = t.termWidth - 1
+		}
+		t.cursorY *= 2
+		t.clearAndRepaintLinePlusNPrevious(t.maxLine * 2)
+	case width > oldWidth:
+		// If the terminal expands then our position calculations will
+		// be wrong in the future because we think the cursor is
+		// |t.pos| chars into the string, but there will be a gap at
+		// the end of any wrapped line.
+		//
+		// But the position will actually be correct until we move, so
+		// we can move back to the beginning and repaint everything.
+		t.clearAndRepaintLinePlusNPrevious(t.maxLine)
+	}
+
+	_, err := t.c.Write(t.outBuf)
+	t.outBuf = t.outBuf[:0]
+	return err
+}
+
+type pasteIndicatorError struct{}
+
+func (pasteIndicatorError) Error() string {
+	return "terminal: ErrPasteIndicator not correctly handled"
+}
+
+// ErrPasteIndicator may be returned from ReadLine as the error, in addition
+// to valid line data. It indicates that bracketed paste mode is enabled and
+// that the returned line consists only of pasted data. Programs may wish to
+// interpret pasted data more literally than typed data.
+var ErrPasteIndicator = pasteIndicatorError{}
+
+// SetBracketedPasteMode requests that the terminal bracket paste operations
+// with markers. Not all terminals support this but, if it is supported, then
+// enabling this mode will stop any autocomplete callback from running due to
+// pastes. Additionally, any lines that are completely pasted will be returned
+// from ReadLine with the error set to ErrPasteIndicator.
+func (t *Terminal) SetBracketedPasteMode(on bool) {
+	if on {
+		io.WriteString(t.c, "\x1b[?2004h")
+	} else {
+		io.WriteString(t.c, "\x1b[?2004l")
+	}
+}
+
+// stRingBuffer is a ring buffer of strings.
+type stRingBuffer struct {
+	// entries contains max elements.
+	entries []string
+	max     int
+	// head contains the index of the element most recently added to the ring.
+	head int
+	// size contains the number of elements in the ring.
+	size int
+}
+
+func (s *stRingBuffer) Add(a string) {
+	if s.entries == nil {
+		const defaultNumEntries = 100
+		s.entries = make([]string, defaultNumEntries)
+		s.max = defaultNumEntries
+	}
+
+	s.head = (s.head + 1) % s.max
+	s.entries[s.head] = a
+	if s.size < s.max {
+		s.size++
+	}
+}
+
+// NthPreviousEntry returns the value passed to the nth previous call to Add.
+// If n is zero then the immediately prior value is returned, if one, then the
+// next most recent, and so on. If such an element doesn't exist then ok is
+// false.
+func (s *stRingBuffer) NthPreviousEntry(n int) (value string, ok bool) {
+	if n >= s.size {
+		return "", false
+	}
+	index := s.head - n
+	if index < 0 {
+		index += s.max
+	}
+	return s.entries[index], true
+}
+
+// readPasswordLine reads from reader until it finds \n or io.EOF.
+// The slice returned does not include the \n.
+// readPasswordLine also ignores any \r it finds.
+func readPasswordLine(reader io.Reader) ([]byte, error) {
+	var buf [1]byte
+	var ret []byte
+
+	for {
+		n, err := reader.Read(buf[:])
+		if n > 0 {
+			switch buf[0] {
+			case '\n':
+				return ret, nil
+			case '\r':
+				// remove \r from passwords on Windows
+			default:
+				ret = append(ret, buf[0])
+			}
+			continue
+		}
+		if err != nil {
+			if err == io.EOF && len(ret) > 0 {
+				return ret, nil
+			}
+			return ret, err
+		}
+	}
+}

vendor/golang.org/x/crypto/ssh/terminal/util.go

@@ -0,0 +1,123 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin dragonfly freebsd linux,!appengine netbsd openbsd
+
+// Package terminal provides support functions for dealing with terminals, as
+// commonly found on UNIX systems.
+//
+// Putting a terminal into raw mode is the most common requirement:
+//
+// 	oldState, err := terminal.MakeRaw(0)
+// 	if err != nil {
+// 	        panic(err)
+// 	}
+// 	defer terminal.Restore(0, oldState)
+package terminal // import "golang.org/x/crypto/ssh/terminal"
+
+import (
+	"syscall"
+	"unsafe"
+
+	"golang.org/x/sys/unix"
+)
+
+// State contains the state of a terminal.
+type State struct {
+	termios syscall.Termios
+}
+
+// IsTerminal returns true if the given file descriptor is a terminal.
+func IsTerminal(fd int) bool {
+	var termios syscall.Termios
+	_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
+	return err == 0
+}
+
+// MakeRaw put the terminal connected to the given file descriptor into raw
+// mode and returns the previous state of the terminal so that it can be
+// restored.
+func MakeRaw(fd int) (*State, error) {
+	var oldState State
+	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&oldState.termios)), 0, 0, 0); err != 0 {
+		return nil, err
+	}
+
+	newState := oldState.termios
+	// This attempts to replicate the behaviour documented for cfmakeraw in
+	// the termios(3) manpage.
+	newState.Iflag &^= syscall.IGNBRK | syscall.BRKINT | syscall.PARMRK | syscall.ISTRIP | syscall.INLCR | syscall.IGNCR | syscall.ICRNL | syscall.IXON
+	newState.Oflag &^= syscall.OPOST
+	newState.Lflag &^= syscall.ECHO | syscall.ECHONL | syscall.ICANON | syscall.ISIG | syscall.IEXTEN
+	newState.Cflag &^= syscall.CSIZE | syscall.PARENB
+	newState.Cflag |= syscall.CS8
+	newState.Cc[unix.VMIN] = 1
+	newState.Cc[unix.VTIME] = 0
+	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&newState)), 0, 0, 0); err != 0 {
+		return nil, err
+	}
+
+	return &oldState, nil
+}
+
+// GetState returns the current state of a terminal which may be useful to
+// restore the terminal after a signal.
+func GetState(fd int) (*State, error) {
+	var oldState State
+	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&oldState.termios)), 0, 0, 0); err != 0 {
+		return nil, err
+	}
+
+	return &oldState, nil
+}
+
+// Restore restores the terminal connected to the given file descriptor to a
+// previous state.
+func Restore(fd int, state *State) error {
+	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&state.termios)), 0, 0, 0); err != 0 {
+		return err
+	}
+	return nil
+}
+
+// GetSize returns the dimensions of the given terminal.
+func GetSize(fd int) (width, height int, err error) {
+	var dimensions [4]uint16
+
+	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), uintptr(syscall.TIOCGWINSZ), uintptr(unsafe.Pointer(&dimensions)), 0, 0, 0); err != 0 {
+		return -1, -1, err
+	}
+	return int(dimensions[1]), int(dimensions[0]), nil
+}
+
+// passwordReader is an io.Reader that reads from a specific file descriptor.
+type passwordReader int
+
+func (r passwordReader) Read(buf []byte) (int, error) {
+	return syscall.Read(int(r), buf)
+}
+
+// ReadPassword reads a line of input from a terminal without local echo.  This
+// is commonly used for inputting passwords and other sensitive data. The slice
+// returned does not include the \n.
+func ReadPassword(fd int) ([]byte, error) {
+	var oldState syscall.Termios
+	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&oldState)), 0, 0, 0); err != 0 {
+		return nil, err
+	}
+
+	newState := oldState
+	newState.Lflag &^= syscall.ECHO
+	newState.Lflag |= syscall.ICANON | syscall.ISIG
+	newState.Iflag |= syscall.ICRNL
+	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&newState)), 0, 0, 0); err != 0 {
+		return nil, err
+	}
+
+	defer func() {
+		syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&oldState)), 0, 0, 0)
+	}()
+
+	return readPasswordLine(passwordReader(fd))
+}

vendor/golang.org/x/crypto/ssh/terminal/util_bsd.go

@@ -0,0 +1,12 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin dragonfly freebsd netbsd openbsd
+
+package terminal
+
+import "golang.org/x/sys/unix"
+
+const ioctlReadTermios = unix.TIOCGETA
+const ioctlWriteTermios = unix.TIOCSETA

vendor/golang.org/x/crypto/ssh/terminal/util_linux.go

@@ -0,0 +1,10 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package terminal
+
+import "golang.org/x/sys/unix"
+
+const ioctlReadTermios = unix.TCGETS
+const ioctlWriteTermios = unix.TCSETS

vendor/golang.org/x/crypto/ssh/terminal/util_plan9.go

@@ -0,0 +1,58 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package terminal provides support functions for dealing with terminals, as
+// commonly found on UNIX systems.
+//
+// Putting a terminal into raw mode is the most common requirement:
+//
+// 	oldState, err := terminal.MakeRaw(0)
+// 	if err != nil {
+// 	        panic(err)
+// 	}
+// 	defer terminal.Restore(0, oldState)
+package terminal
+
+import (
+	"fmt"
+	"runtime"
+)
+
+type State struct{}
+
+// IsTerminal returns true if the given file descriptor is a terminal.
+func IsTerminal(fd int) bool {
+	return false
+}
+
+// MakeRaw put the terminal connected to the given file descriptor into raw
+// mode and returns the previous state of the terminal so that it can be
+// restored.
+func MakeRaw(fd int) (*State, error) {
+	return nil, fmt.Errorf("terminal: MakeRaw not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
+
+// GetState returns the current state of a terminal which may be useful to
+// restore the terminal after a signal.
+func GetState(fd int) (*State, error) {
+	return nil, fmt.Errorf("terminal: GetState not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
+
+// Restore restores the terminal connected to the given file descriptor to a
+// previous state.
+func Restore(fd int, state *State) error {
+	return fmt.Errorf("terminal: Restore not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
+
+// GetSize returns the dimensions of the given terminal.
+func GetSize(fd int) (width, height int, err error) {
+	return 0, 0, fmt.Errorf("terminal: GetSize not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
+
+// ReadPassword reads a line of input from a terminal without local echo.  This
+// is commonly used for inputting passwords and other sensitive data. The slice
+// returned does not include the \n.
+func ReadPassword(fd int) ([]byte, error) {
+	return nil, fmt.Errorf("terminal: ReadPassword not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}

vendor/golang.org/x/crypto/ssh/terminal/util_solaris.go

@@ -0,0 +1,128 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build solaris
+
+package terminal // import "golang.org/x/crypto/ssh/terminal"
+
+import (
+	"golang.org/x/sys/unix"
+	"io"
+	"syscall"
+)
+
+// State contains the state of a terminal.
+type State struct {
+	state *unix.Termios
+}
+
+// IsTerminal returns true if the given file descriptor is a terminal.
+func IsTerminal(fd int) bool {
+	_, err := unix.IoctlGetTermio(fd, unix.TCGETA)
+	return err == nil
+}
+
+// ReadPassword reads a line of input from a terminal without local echo.  This
+// is commonly used for inputting passwords and other sensitive data. The slice
+// returned does not include the \n.
+func ReadPassword(fd int) ([]byte, error) {
+	// see also: http://src.illumos.org/source/xref/illumos-gate/usr/src/lib/libast/common/uwin/getpass.c
+	val, err := unix.IoctlGetTermios(fd, unix.TCGETS)
+	if err != nil {
+		return nil, err
+	}
+	oldState := *val
+
+	newState := oldState
+	newState.Lflag &^= syscall.ECHO
+	newState.Lflag |= syscall.ICANON | syscall.ISIG
+	newState.Iflag |= syscall.ICRNL
+	err = unix.IoctlSetTermios(fd, unix.TCSETS, &newState)
+	if err != nil {
+		return nil, err
+	}
+
+	defer unix.IoctlSetTermios(fd, unix.TCSETS, &oldState)
+
+	var buf [16]byte
+	var ret []byte
+	for {
+		n, err := syscall.Read(fd, buf[:])
+		if err != nil {
+			return nil, err
+		}
+		if n == 0 {
+			if len(ret) == 0 {
+				return nil, io.EOF
+			}
+			break
+		}
+		if buf[n-1] == '\n' {
+			n--
+		}
+		ret = append(ret, buf[:n]...)
+		if n < len(buf) {
+			break
+		}
+	}
+
+	return ret, nil
+}
+
+// MakeRaw puts the terminal connected to the given file descriptor into raw
+// mode and returns the previous state of the terminal so that it can be
+// restored.
+// see http://cr.illumos.org/~webrev/andy_js/1060/
+func MakeRaw(fd int) (*State, error) {
+	oldTermiosPtr, err := unix.IoctlGetTermios(fd, unix.TCGETS)
+	if err != nil {
+		return nil, err
+	}
+	oldTermios := *oldTermiosPtr
+
+	newTermios := oldTermios
+	newTermios.Iflag &^= syscall.IGNBRK | syscall.BRKINT | syscall.PARMRK | syscall.ISTRIP | syscall.INLCR | syscall.IGNCR | syscall.ICRNL | syscall.IXON
+	newTermios.Oflag &^= syscall.OPOST
+	newTermios.Lflag &^= syscall.ECHO | syscall.ECHONL | syscall.ICANON | syscall.ISIG | syscall.IEXTEN
+	newTermios.Cflag &^= syscall.CSIZE | syscall.PARENB
+	newTermios.Cflag |= syscall.CS8
+	newTermios.Cc[unix.VMIN] = 1
+	newTermios.Cc[unix.VTIME] = 0
+
+	if err := unix.IoctlSetTermios(fd, unix.TCSETS, &newTermios); err != nil {
+		return nil, err
+	}
+
+	return &State{
+		state: oldTermiosPtr,
+	}, nil
+}
+
+// Restore restores the terminal connected to the given file descriptor to a
+// previous state.
+func Restore(fd int, oldState *State) error {
+	return unix.IoctlSetTermios(fd, unix.TCSETS, oldState.state)
+}
+
+// GetState returns the current state of a terminal which may be useful to
+// restore the terminal after a signal.
+func GetState(fd int) (*State, error) {
+	oldTermiosPtr, err := unix.IoctlGetTermios(fd, unix.TCGETS)
+	if err != nil {
+		return nil, err
+	}
+
+	return &State{
+		state: oldTermiosPtr,
+	}, nil
+}
+
+// GetSize returns the dimensions of the given terminal.
+func GetSize(fd int) (width, height int, err error) {
+	ws, err := unix.IoctlGetWinsize(fd, unix.TIOCGWINSZ)
+	if err != nil {
+		return 0, 0, err
+	}
+	return int(ws.Col), int(ws.Row), nil
+}

vendor/golang.org/x/crypto/ssh/terminal/util_windows.go

@@ -0,0 +1,102 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build windows
+
+// Package terminal provides support functions for dealing with terminals, as
+// commonly found on UNIX systems.
+//
+// Putting a terminal into raw mode is the most common requirement:
+//
+// 	oldState, err := terminal.MakeRaw(0)
+// 	if err != nil {
+// 	        panic(err)
+// 	}
+// 	defer terminal.Restore(0, oldState)
+package terminal
+
+import (
+	"golang.org/x/sys/windows"
+)
+
+type State struct {
+	mode uint32
+}
+
+// IsTerminal returns true if the given file descriptor is a terminal.
+func IsTerminal(fd int) bool {
+	var st uint32
+	err := windows.GetConsoleMode(windows.Handle(fd), &st)
+	return err == nil
+}
+
+// MakeRaw put the terminal connected to the given file descriptor into raw
+// mode and returns the previous state of the terminal so that it can be
+// restored.
+func MakeRaw(fd int) (*State, error) {
+	var st uint32
+	if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil {
+		return nil, err
+	}
+	raw := st &^ (windows.ENABLE_ECHO_INPUT | windows.ENABLE_PROCESSED_INPUT | windows.ENABLE_LINE_INPUT | windows.ENABLE_PROCESSED_OUTPUT)
+	if err := windows.SetConsoleMode(windows.Handle(fd), raw); err != nil {
+		return nil, err
+	}
+	return &State{st}, nil
+}
+
+// GetState returns the current state of a terminal which may be useful to
+// restore the terminal after a signal.
+func GetState(fd int) (*State, error) {
+	var st uint32
+	if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil {
+		return nil, err
+	}
+	return &State{st}, nil
+}
+
+// Restore restores the terminal connected to the given file descriptor to a
+// previous state.
+func Restore(fd int, state *State) error {
+	return windows.SetConsoleMode(windows.Handle(fd), state.mode)
+}
+
+// GetSize returns the dimensions of the given terminal.
+func GetSize(fd int) (width, height int, err error) {
+	var info windows.ConsoleScreenBufferInfo
+	if err := windows.GetConsoleScreenBufferInfo(windows.Handle(fd), &info); err != nil {
+		return 0, 0, err
+	}
+	return int(info.Size.X), int(info.Size.Y), nil
+}
+
+// passwordReader is an io.Reader that reads from a specific Windows HANDLE.
+type passwordReader int
+
+func (r passwordReader) Read(buf []byte) (int, error) {
+	return windows.Read(windows.Handle(r), buf)
+}
+
+// ReadPassword reads a line of input from a terminal without local echo.  This
+// is commonly used for inputting passwords and other sensitive data. The slice
+// returned does not include the \n.
+func ReadPassword(fd int) ([]byte, error) {
+	var st uint32
+	if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil {
+		return nil, err
+	}
+	old := st
+
+	st &^= (windows.ENABLE_ECHO_INPUT)
+	st |= (windows.ENABLE_PROCESSED_INPUT | windows.ENABLE_LINE_INPUT | windows.ENABLE_PROCESSED_OUTPUT)
+	if err := windows.SetConsoleMode(windows.Handle(fd), st); err != nil {
+		return nil, err
+	}
+
+	defer func() {
+		windows.SetConsoleMode(windows.Handle(fd), old)
+	}()
+
+	return readPasswordLine(passwordReader(fd))
+}

vendor/golang.org/x/net/bpf/constants.go

@@ -70,57 +70,60 @@ type Extension int
 
 // Extension functions available in the Linux kernel.
 const (
+	// extOffset is the negative maximum number of instructions used
+	// to load instructions by overloading the K argument.
+	extOffset = -0x1000
 	// ExtLen returns the length of the packet.
 	ExtLen Extension = 1
 	// ExtProto returns the packet's L3 protocol type.
-	ExtProto = 0
+	ExtProto Extension = 0
 	// ExtType returns the packet's type (skb->pkt_type in the kernel)
 	//
 	// TODO: better documentation. How nice an API do we want to
 	// provide for these esoteric extensions?
-	ExtType = 4
+	ExtType Extension = 4
 	// ExtPayloadOffset returns the offset of the packet payload, or
 	// the first protocol header that the kernel does not know how to
 	// parse.
-	ExtPayloadOffset = 52
+	ExtPayloadOffset Extension = 52
 	// ExtInterfaceIndex returns the index of the interface on which
 	// the packet was received.
-	ExtInterfaceIndex = 8
+	ExtInterfaceIndex Extension = 8
 	// ExtNetlinkAttr returns the netlink attribute of type X at
 	// offset A.
-	ExtNetlinkAttr = 12
+	ExtNetlinkAttr Extension = 12
 	// ExtNetlinkAttrNested returns the nested netlink attribute of
 	// type X at offset A.
-	ExtNetlinkAttrNested = 16
+	ExtNetlinkAttrNested Extension = 16
 	// ExtMark returns the packet's mark value.
-	ExtMark = 20
+	ExtMark Extension = 20
 	// ExtQueue returns the packet's assigned hardware queue.
-	ExtQueue = 24
+	ExtQueue Extension = 24
 	// ExtLinkLayerType returns the packet's hardware address type
 	// (e.g. Ethernet, Infiniband).
-	ExtLinkLayerType = 28
+	ExtLinkLayerType Extension = 28
 	// ExtRXHash returns the packets receive hash.
 	//
 	// TODO: figure out what this rxhash actually is.
-	ExtRXHash = 32
+	ExtRXHash Extension = 32
 	// ExtCPUID returns the ID of the CPU processing the current
 	// packet.
-	ExtCPUID = 36
+	ExtCPUID Extension = 36
 	// ExtVLANTag returns the packet's VLAN tag.
-	ExtVLANTag = 44
+	ExtVLANTag Extension = 44
 	// ExtVLANTagPresent returns non-zero if the packet has a VLAN
 	// tag.
 	//
 	// TODO: I think this might be a lie: it reads bit 0x1000 of the
 	// VLAN header, which changed meaning in recent revisions of the
 	// spec - this extension may now return meaningless information.
-	ExtVLANTagPresent = 48
+	ExtVLANTagPresent Extension = 48
 	// ExtVLANProto returns 0x8100 if the frame has a VLAN header,
 	// 0x88a8 if the frame has a "Q-in-Q" double VLAN header, or some
 	// other value if no VLAN information is present.
-	ExtVLANProto = 60
+	ExtVLANProto Extension = 60
 	// ExtRand returns a uniformly random uint32.
-	ExtRand = 56
+	ExtRand Extension = 56
 )
 
 // The following gives names to various bit patterns used in opcode construction.

vendor/golang.org/x/net/bpf/instructions.go

@@ -57,6 +57,9 @@ func (ri RawInstruction) Disassemble() Instruction {
 			}
 			return LoadScratch{Dst: reg, N: int(ri.K)}
 		case opAddrModeAbsolute:
+			if ri.K > extOffset+0xffffffff {
+				return LoadExtension{Num: Extension(-extOffset + ri.K)}
+			}
 			return LoadAbsolute{Size: sz, Off: ri.K}
 		case opAddrModeIndirect:
 			return LoadIndirect{Size: sz, Off: ri.K}
@@ -104,6 +107,14 @@ func (ri RawInstruction) Disassemble() Instruction {
 		case opJumpAlways:
 			return Jump{Skip: ri.K}
 		case opJumpEqual:
+			if ri.Jt == 0 {
+				return JumpIf{
+					Cond:      JumpNotEqual,
+					Val:       ri.K,
+					SkipTrue:  ri.Jf,
+					SkipFalse: 0,
+				}
+			}
 			return JumpIf{
 				Cond:      JumpEqual,
 				Val:       ri.K,
@@ -111,6 +122,14 @@ func (ri RawInstruction) Disassemble() Instruction {
 				SkipFalse: ri.Jf,
 			}
 		case opJumpGT:
+			if ri.Jt == 0 {
+				return JumpIf{
+					Cond:      JumpLessOrEqual,
+					Val:       ri.K,
+					SkipTrue:  ri.Jf,
+					SkipFalse: 0,
+				}
+			}
 			return JumpIf{
 				Cond:      JumpGreaterThan,
 				Val:       ri.K,
@@ -118,6 +137,14 @@ func (ri RawInstruction) Disassemble() Instruction {
 				SkipFalse: ri.Jf,
 			}
 		case opJumpGE:
+			if ri.Jt == 0 {
+				return JumpIf{
+					Cond:      JumpLessThan,
+					Val:       ri.K,
+					SkipTrue:  ri.Jf,
+					SkipFalse: 0,
+				}
+			}
 			return JumpIf{
 				Cond:      JumpGreaterOrEqual,
 				Val:       ri.K,
@@ -171,6 +198,18 @@ func (a LoadConstant) Assemble() (RawInstruction, error) {
 	return assembleLoad(a.Dst, 4, opAddrModeImmediate, a.Val)
 }
 
+// String returns the the instruction in assembler notation.
+func (a LoadConstant) String() string {
+	switch a.Dst {
+	case RegA:
+		return fmt.Sprintf("ld #%d", a.Val)
+	case RegX:
+		return fmt.Sprintf("ldx #%d", a.Val)
+	default:
+		return fmt.Sprintf("unknown instruction: %#v", a)
+	}
+}
+
 // LoadScratch loads scratch[N] into register Dst.
 type LoadScratch struct {
 	Dst Register
@@ -185,6 +224,18 @@ func (a LoadScratch) Assemble() (RawInstruction, error) {
 	return assembleLoad(a.Dst, 4, opAddrModeScratch, uint32(a.N))
 }
 
+// String returns the the instruction in assembler notation.
+func (a LoadScratch) String() string {
+	switch a.Dst {
+	case RegA:
+		return fmt.Sprintf("ld M[%d]", a.N)
+	case RegX:
+		return fmt.Sprintf("ldx M[%d]", a.N)
+	default:
+		return fmt.Sprintf("unknown instruction: %#v", a)
+	}
+}
+
 // LoadAbsolute loads packet[Off:Off+Size] as an integer value into
 // register A.
 type LoadAbsolute struct {
@@ -197,6 +248,23 @@ func (a LoadAbsolute) Assemble() (RawInstruction, error) {
 	return assembleLoad(RegA, a.Size, opAddrModeAbsolute, a.Off)
 }
 
+// String returns the the instruction in assembler notation.
+func (a LoadAbsolute) String() string {
+	switch a.Size {
+	case 1: // byte
+		return fmt.Sprintf("ldb [%d]", a.Off)
+	case 2: // half word
+		return fmt.Sprintf("ldh [%d]", a.Off)
+	case 4: // word
+		if a.Off > extOffset+0xffffffff {
+			return LoadExtension{Num: Extension(a.Off + 0x1000)}.String()
+		}
+		return fmt.Sprintf("ld [%d]", a.Off)
+	default:
+		return fmt.Sprintf("unknown instruction: %#v", a)
+	}
+}
+
 // LoadIndirect loads packet[X+Off:X+Off+Size] as an integer value
 // into register A.
 type LoadIndirect struct {
@@ -209,6 +277,20 @@ func (a LoadIndirect) Assemble() (RawInstruction, error) {
 	return assembleLoad(RegA, a.Size, opAddrModeIndirect, a.Off)
 }
 
+// String returns the the instruction in assembler notation.
+func (a LoadIndirect) String() string {
+	switch a.Size {
+	case 1: // byte
+		return fmt.Sprintf("ldb [x + %d]", a.Off)
+	case 2: // half word
+		return fmt.Sprintf("ldh [x + %d]", a.Off)
+	case 4: // word
+		return fmt.Sprintf("ld [x + %d]", a.Off)
+	default:
+		return fmt.Sprintf("unknown instruction: %#v", a)
+	}
+}
+
 // LoadMemShift multiplies the first 4 bits of the byte at packet[Off]
 // by 4 and stores the result in register X.
 //
@@ -224,6 +306,11 @@ func (a LoadMemShift) Assemble() (RawInstruction, error) {
 	return assembleLoad(RegX, 1, opAddrModeMemShift, a.Off)
 }
 
+// String returns the the instruction in assembler notation.
+func (a LoadMemShift) String() string {
+	return fmt.Sprintf("ldx 4*([%d]&0xf)", a.Off)
+}
+
 // LoadExtension invokes a linux-specific extension and stores the
 // result in register A.
 type LoadExtension struct {
@@ -235,7 +322,47 @@ func (a LoadExtension) Assemble() (RawInstruction, error) {
 	if a.Num == ExtLen {
 		return assembleLoad(RegA, 4, opAddrModePacketLen, 0)
 	}
-	return assembleLoad(RegA, 4, opAddrModeAbsolute, uint32(-0x1000+a.Num))
+	return assembleLoad(RegA, 4, opAddrModeAbsolute, uint32(extOffset+a.Num))
+}
+
+// String returns the the instruction in assembler notation.
+func (a LoadExtension) String() string {
+	switch a.Num {
+	case ExtLen:
+		return "ld #len"
+	case ExtProto:
+		return "ld #proto"
+	case ExtType:
+		return "ld #type"
+	case ExtPayloadOffset:
+		return "ld #poff"
+	case ExtInterfaceIndex:
+		return "ld #ifidx"
+	case ExtNetlinkAttr:
+		return "ld #nla"
+	case ExtNetlinkAttrNested:
+		return "ld #nlan"
+	case ExtMark:
+		return "ld #mark"
+	case ExtQueue:
+		return "ld #queue"
+	case ExtLinkLayerType:
+		return "ld #hatype"
+	case ExtRXHash:
+		return "ld #rxhash"
+	case ExtCPUID:
+		return "ld #cpu"
+	case ExtVLANTag:
+		return "ld #vlan_tci"
+	case ExtVLANTagPresent:
+		return "ld #vlan_avail"
+	case ExtVLANProto:
+		return "ld #vlan_tpid"
+	case ExtRand:
+		return "ld #rand"
+	default:
+		return fmt.Sprintf("unknown instruction: %#v", a)
+	}
 }
 
 // StoreScratch stores register Src into scratch[N].
@@ -265,6 +392,18 @@ func (a StoreScratch) Assemble() (RawInstruction, error) {
 	}, nil
 }
 
+// String returns the the instruction in assembler notation.
+func (a StoreScratch) String() string {
+	switch a.Src {
+	case RegA:
+		return fmt.Sprintf("st M[%d]", a.N)
+	case RegX:
+		return fmt.Sprintf("stx M[%d]", a.N)
+	default:
+		return fmt.Sprintf("unknown instruction: %#v", a)
+	}
+}
+
 // ALUOpConstant executes A = A <Op> Val.
 type ALUOpConstant struct {
 	Op  ALUOp
@@ -279,6 +418,34 @@ func (a ALUOpConstant) Assemble() (RawInstruction, error) {
 	}, nil
 }
 
+// String returns the the instruction in assembler notation.
+func (a ALUOpConstant) String() string {
+	switch a.Op {
+	case ALUOpAdd:
+		return fmt.Sprintf("add #%d", a.Val)
+	case ALUOpSub:
+		return fmt.Sprintf("sub #%d", a.Val)
+	case ALUOpMul:
+		return fmt.Sprintf("mul #%d", a.Val)
+	case ALUOpDiv:
+		return fmt.Sprintf("div #%d", a.Val)
+	case ALUOpMod:
+		return fmt.Sprintf("mod #%d", a.Val)
+	case ALUOpAnd:
+		return fmt.Sprintf("and #%d", a.Val)
+	case ALUOpOr:
+		return fmt.Sprintf("or #%d", a.Val)
+	case ALUOpXor:
+		return fmt.Sprintf("xor #%d", a.Val)
+	case ALUOpShiftLeft:
+		return fmt.Sprintf("lsh #%d", a.Val)
+	case ALUOpShiftRight:
+		return fmt.Sprintf("rsh #%d", a.Val)
+	default:
+		return fmt.Sprintf("unknown instruction: %#v", a)
+	}
+}
+
 // ALUOpX executes A = A <Op> X
 type ALUOpX struct {
 	Op ALUOp
@@ -291,6 +458,34 @@ func (a ALUOpX) Assemble() (RawInstruction, error) {
 	}, nil
 }
 
+// String returns the the instruction in assembler notation.
+func (a ALUOpX) String() string {
+	switch a.Op {
+	case ALUOpAdd:
+		return "add x"
+	case ALUOpSub:
+		return "sub x"
+	case ALUOpMul:
+		return "mul x"
+	case ALUOpDiv:
+		return "div x"
+	case ALUOpMod:
+		return "mod x"
+	case ALUOpAnd:
+		return "and x"
+	case ALUOpOr:
+		return "or x"
+	case ALUOpXor:
+		return "xor x"
+	case ALUOpShiftLeft:
+		return "lsh x"
+	case ALUOpShiftRight:
+		return "rsh x"
+	default:
+		return fmt.Sprintf("unknown instruction: %#v", a)
+	}
+}
+
 // NegateA executes A = -A.
 type NegateA struct{}
 
@@ -301,6 +496,11 @@ func (a NegateA) Assemble() (RawInstruction, error) {
 	}, nil
 }
 
+// String returns the the instruction in assembler notation.
+func (a NegateA) String() string {
+	return fmt.Sprintf("neg")
+}
+
 // Jump skips the following Skip instructions in the program.
 type Jump struct {
 	Skip uint32
@@ -314,6 +514,11 @@ func (a Jump) Assemble() (RawInstruction, error) {
 	}, nil
 }
 
+// String returns the the instruction in assembler notation.
+func (a Jump) String() string {
+	return fmt.Sprintf("ja %d", a.Skip)
+}
+
 // JumpIf skips the following Skip instructions in the program if A
 // <Cond> Val is true.
 type JumpIf struct {
@@ -361,6 +566,51 @@ func (a JumpIf) Assemble() (RawInstruction, error) {
 	}, nil
 }
 
+// String returns the the instruction in assembler notation.
+func (a JumpIf) String() string {
+	switch a.Cond {
+	// K == A
+	case JumpEqual:
+		return conditionalJump(a, "jeq", "jneq")
+	// K != A
+	case JumpNotEqual:
+		return fmt.Sprintf("jneq #%d,%d", a.Val, a.SkipTrue)
+	// K > A
+	case JumpGreaterThan:
+		return conditionalJump(a, "jgt", "jle")
+	// K < A
+	case JumpLessThan:
+		return fmt.Sprintf("jlt #%d,%d", a.Val, a.SkipTrue)
+	// K >= A
+	case JumpGreaterOrEqual:
+		return conditionalJump(a, "jge", "jlt")
+	// K <= A
+	case JumpLessOrEqual:
+		return fmt.Sprintf("jle #%d,%d", a.Val, a.SkipTrue)
+	// K & A != 0
+	case JumpBitsSet:
+		if a.SkipFalse > 0 {
+			return fmt.Sprintf("jset #%d,%d,%d", a.Val, a.SkipTrue, a.SkipFalse)
+		}
+		return fmt.Sprintf("jset #%d,%d", a.Val, a.SkipTrue)
+	// K & A == 0, there is no assembler instruction for JumpBitNotSet, use JumpBitSet and invert skips
+	case JumpBitsNotSet:
+		return JumpIf{Cond: JumpBitsSet, SkipTrue: a.SkipFalse, SkipFalse: a.SkipTrue, Val: a.Val}.String()
+	default:
+		return fmt.Sprintf("unknown instruction: %#v", a)
+	}
+}
+
+func conditionalJump(inst JumpIf, positiveJump, negativeJump string) string {
+	if inst.SkipTrue > 0 {
+		if inst.SkipFalse > 0 {
+			return fmt.Sprintf("%s #%d,%d,%d", positiveJump, inst.Val, inst.SkipTrue, inst.SkipFalse)
+		}
+		return fmt.Sprintf("%s #%d,%d", positiveJump, inst.Val, inst.SkipTrue)
+	}
+	return fmt.Sprintf("%s #%d,%d", negativeJump, inst.Val, inst.SkipFalse)
+}
+
 // RetA exits the BPF program, returning the value of register A.
 type RetA struct{}
 
@@ -371,6 +621,11 @@ func (a RetA) Assemble() (RawInstruction, error) {
 	}, nil
 }
 
+// String returns the the instruction in assembler notation.
+func (a RetA) String() string {
+	return fmt.Sprintf("ret a")
+}
+
 // RetConstant exits the BPF program, returning a constant value.
 type RetConstant struct {
 	Val uint32
@@ -384,6 +639,11 @@ func (a RetConstant) Assemble() (RawInstruction, error) {
 	}, nil
 }
 
+// String returns the the instruction in assembler notation.
+func (a RetConstant) String() string {
+	return fmt.Sprintf("ret #%d", a.Val)
+}
+
 // TXA copies the value of register X to register A.
 type TXA struct{}
 
@@ -394,6 +654,11 @@ func (a TXA) Assemble() (RawInstruction, error) {
 	}, nil
 }
 
+// String returns the the instruction in assembler notation.
+func (a TXA) String() string {
+	return fmt.Sprintf("txa")
+}
+
 // TAX copies the value of register A to register X.
 type TAX struct{}
 
@@ -404,6 +669,11 @@ func (a TAX) Assemble() (RawInstruction, error) {
 	}, nil
 }
 
+// String returns the the instruction in assembler notation.
+func (a TAX) String() string {
+	return fmt.Sprintf("tax")
+}
+
 func assembleLoad(dst Register, loadSize int, mode uint16, k uint32) (RawInstruction, error) {
 	var (
 		cls uint16

vendor/golang.org/x/net/bpf/setter.go

@@ -0,0 +1,10 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package bpf
+
+// A Setter is a type which can attach a compiled BPF filter to itself.
+type Setter interface {
+	SetBPF(filter []RawInstruction) error
+}

vendor/golang.org/x/net/internal/iana/gen.go

@@ -1,293 +0,0 @@
-// Copyright 2013 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-//go:generate go run gen.go
-
-// This program generates internet protocol constants and tables by
-// reading IANA protocol registries.
-package main
-
-import (
-	"bytes"
-	"encoding/xml"
-	"fmt"
-	"go/format"
-	"io"
-	"io/ioutil"
-	"net/http"
-	"os"
-	"strconv"
-	"strings"
-)
-
-var registries = []struct {
-	url   string
-	parse func(io.Writer, io.Reader) error
-}{
-	{
-		"http://www.iana.org/assignments/dscp-registry/dscp-registry.xml",
-		parseDSCPRegistry,
-	},
-	{
-		"http://www.iana.org/assignments/ipv4-tos-byte/ipv4-tos-byte.xml",
-		parseTOSTCByte,
-	},
-	{
-		"http://www.iana.org/assignments/protocol-numbers/protocol-numbers.xml",
-		parseProtocolNumbers,
-	},
-}
-
-func main() {
-	var bb bytes.Buffer
-	fmt.Fprintf(&bb, "// go generate gen.go\n")
-	fmt.Fprintf(&bb, "// GENERATED BY THE COMMAND ABOVE; DO NOT EDIT\n\n")
-	fmt.Fprintf(&bb, "// Package iana provides protocol number resources managed by the Internet Assigned Numbers Authority (IANA).\n")
-	fmt.Fprintf(&bb, `package iana // import "golang.org/x/net/internal/iana"`+"\n\n")
-	for _, r := range registries {
-		resp, err := http.Get(r.url)
-		if err != nil {
-			fmt.Fprintln(os.Stderr, err)
-			os.Exit(1)
-		}
-		defer resp.Body.Close()
-		if resp.StatusCode != http.StatusOK {
-			fmt.Fprintf(os.Stderr, "got HTTP status code %v for %v\n", resp.StatusCode, r.url)
-			os.Exit(1)
-		}
-		if err := r.parse(&bb, resp.Body); err != nil {
-			fmt.Fprintln(os.Stderr, err)
-			os.Exit(1)
-		}
-		fmt.Fprintf(&bb, "\n")
-	}
-	b, err := format.Source(bb.Bytes())
-	if err != nil {
-		fmt.Fprintln(os.Stderr, err)
-		os.Exit(1)
-	}
-	if err := ioutil.WriteFile("const.go", b, 0644); err != nil {
-		fmt.Fprintln(os.Stderr, err)
-		os.Exit(1)
-	}
-}
-
-func parseDSCPRegistry(w io.Writer, r io.Reader) error {
-	dec := xml.NewDecoder(r)
-	var dr dscpRegistry
-	if err := dec.Decode(&dr); err != nil {
-		return err
-	}
-	drs := dr.escape()
-	fmt.Fprintf(w, "// %s, Updated: %s\n", dr.Title, dr.Updated)
-	fmt.Fprintf(w, "const (\n")
-	for _, dr := range drs {
-		fmt.Fprintf(w, "DiffServ%s = %#x", dr.Name, dr.Value)
-		fmt.Fprintf(w, "// %s\n", dr.OrigName)
-	}
-	fmt.Fprintf(w, ")\n")
-	return nil
-}
-
-type dscpRegistry struct {
-	XMLName     xml.Name `xml:"registry"`
-	Title       string   `xml:"title"`
-	Updated     string   `xml:"updated"`
-	Note        string   `xml:"note"`
-	RegTitle    string   `xml:"registry>title"`
-	PoolRecords []struct {
-		Name  string `xml:"name"`
-		Space string `xml:"space"`
-	} `xml:"registry>record"`
-	Records []struct {
-		Name  string `xml:"name"`
-		Space string `xml:"space"`
-	} `xml:"registry>registry>record"`
-}
-
-type canonDSCPRecord struct {
-	OrigName string
-	Name     string
-	Value    int
-}
-
-func (drr *dscpRegistry) escape() []canonDSCPRecord {
-	drs := make([]canonDSCPRecord, len(drr.Records))
-	sr := strings.NewReplacer(
-		"+", "",
-		"-", "",
-		"/", "",
-		".", "",
-		" ", "",
-	)
-	for i, dr := range drr.Records {
-		s := strings.TrimSpace(dr.Name)
-		drs[i].OrigName = s
-		drs[i].Name = sr.Replace(s)
-		n, err := strconv.ParseUint(dr.Space, 2, 8)
-		if err != nil {
-			continue
-		}
-		drs[i].Value = int(n) << 2
-	}
-	return drs
-}
-
-func parseTOSTCByte(w io.Writer, r io.Reader) error {
-	dec := xml.NewDecoder(r)
-	var ttb tosTCByte
-	if err := dec.Decode(&ttb); err != nil {
-		return err
-	}
-	trs := ttb.escape()
-	fmt.Fprintf(w, "// %s, Updated: %s\n", ttb.Title, ttb.Updated)
-	fmt.Fprintf(w, "const (\n")
-	for _, tr := range trs {
-		fmt.Fprintf(w, "%s = %#x", tr.Keyword, tr.Value)
-		fmt.Fprintf(w, "// %s\n", tr.OrigKeyword)
-	}
-	fmt.Fprintf(w, ")\n")
-	return nil
-}
-
-type tosTCByte struct {
-	XMLName  xml.Name `xml:"registry"`
-	Title    string   `xml:"title"`
-	Updated  string   `xml:"updated"`
-	Note     string   `xml:"note"`
-	RegTitle string   `xml:"registry>title"`
-	Records  []struct {
-		Binary  string `xml:"binary"`
-		Keyword string `xml:"keyword"`
-	} `xml:"registry>record"`
-}
-
-type canonTOSTCByteRecord struct {
-	OrigKeyword string
-	Keyword     string
-	Value       int
-}
-
-func (ttb *tosTCByte) escape() []canonTOSTCByteRecord {
-	trs := make([]canonTOSTCByteRecord, len(ttb.Records))
-	sr := strings.NewReplacer(
-		"Capable", "",
-		"(", "",
-		")", "",
-		"+", "",
-		"-", "",
-		"/", "",
-		".", "",
-		" ", "",
-	)
-	for i, tr := range ttb.Records {
-		s := strings.TrimSpace(tr.Keyword)
-		trs[i].OrigKeyword = s
-		ss := strings.Split(s, " ")
-		if len(ss) > 1 {
-			trs[i].Keyword = strings.Join(ss[1:], " ")
-		} else {
-			trs[i].Keyword = ss[0]
-		}
-		trs[i].Keyword = sr.Replace(trs[i].Keyword)
-		n, err := strconv.ParseUint(tr.Binary, 2, 8)
-		if err != nil {
-			continue
-		}
-		trs[i].Value = int(n)
-	}
-	return trs
-}
-
-func parseProtocolNumbers(w io.Writer, r io.Reader) error {
-	dec := xml.NewDecoder(r)
-	var pn protocolNumbers
-	if err := dec.Decode(&pn); err != nil {
-		return err
-	}
-	prs := pn.escape()
-	prs = append([]canonProtocolRecord{{
-		Name:  "IP",
-		Descr: "IPv4 encapsulation, pseudo protocol number",
-		Value: 0,
-	}}, prs...)
-	fmt.Fprintf(w, "// %s, Updated: %s\n", pn.Title, pn.Updated)
-	fmt.Fprintf(w, "const (\n")
-	for _, pr := range prs {
-		if pr.Name == "" {
-			continue
-		}
-		fmt.Fprintf(w, "Protocol%s = %d", pr.Name, pr.Value)
-		s := pr.Descr
-		if s == "" {
-			s = pr.OrigName
-		}
-		fmt.Fprintf(w, "// %s\n", s)
-	}
-	fmt.Fprintf(w, ")\n")
-	return nil
-}
-
-type protocolNumbers struct {
-	XMLName  xml.Name `xml:"registry"`
-	Title    string   `xml:"title"`
-	Updated  string   `xml:"updated"`
-	RegTitle string   `xml:"registry>title"`
-	Note     string   `xml:"registry>note"`
-	Records  []struct {
-		Value string `xml:"value"`
-		Name  string `xml:"name"`
-		Descr string `xml:"description"`
-	} `xml:"registry>record"`
-}
-
-type canonProtocolRecord struct {
-	OrigName string
-	Name     string
-	Descr    string
-	Value    int
-}
-
-func (pn *protocolNumbers) escape() []canonProtocolRecord {
-	prs := make([]canonProtocolRecord, len(pn.Records))
-	sr := strings.NewReplacer(
-		"-in-", "in",
-		"-within-", "within",
-		"-over-", "over",
-		"+", "P",
-		"-", "",
-		"/", "",
-		".", "",
-		" ", "",
-	)
-	for i, pr := range pn.Records {
-		if strings.Contains(pr.Name, "Deprecated") ||
-			strings.Contains(pr.Name, "deprecated") {
-			continue
-		}
-		prs[i].OrigName = pr.Name
-		s := strings.TrimSpace(pr.Name)
-		switch pr.Name {
-		case "ISIS over IPv4":
-			prs[i].Name = "ISIS"
-		case "manet":
-			prs[i].Name = "MANET"
-		default:
-			prs[i].Name = sr.Replace(s)
-		}
-		ss := strings.Split(pr.Descr, "\n")
-		for i := range ss {
-			ss[i] = strings.TrimSpace(ss[i])
-		}
-		if len(ss) > 1 {
-			prs[i].Descr = strings.Join(ss, " ")
-		} else {
-			prs[i].Descr = ss[0]
-		}
-		prs[i].Value, _ = strconv.Atoi(pr.Value)
-	}
-	return prs
-}

vendor/golang.org/x/net/internal/socket/defs_darwin.go

@@ -1,44 +0,0 @@
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-// +godefs map struct_in6_addr [16]byte /* in6_addr */
-
-package socket
-
-/*
-#include <sys/socket.h>
-
-#include <netinet/in.h>
-*/
-import "C"
-
-const (
-	sysAF_UNSPEC = C.AF_UNSPEC
-	sysAF_INET   = C.AF_INET
-	sysAF_INET6  = C.AF_INET6
-
-	sysSOCK_RAW = C.SOCK_RAW
-)
-
-type iovec C.struct_iovec
-
-type msghdr C.struct_msghdr
-
-type cmsghdr C.struct_cmsghdr
-
-type sockaddrInet C.struct_sockaddr_in
-
-type sockaddrInet6 C.struct_sockaddr_in6
-
-const (
-	sizeofIovec   = C.sizeof_struct_iovec
-	sizeofMsghdr  = C.sizeof_struct_msghdr
-	sizeofCmsghdr = C.sizeof_struct_cmsghdr
-
-	sizeofSockaddrInet  = C.sizeof_struct_sockaddr_in
-	sizeofSockaddrInet6 = C.sizeof_struct_sockaddr_in6
-)

vendor/golang.org/x/net/internal/socket/defs_dragonfly.go

@@ -1,44 +0,0 @@
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-// +godefs map struct_in6_addr [16]byte /* in6_addr */
-
-package socket
-
-/*
-#include <sys/socket.h>
-
-#include <netinet/in.h>
-*/
-import "C"
-
-const (
-	sysAF_UNSPEC = C.AF_UNSPEC
-	sysAF_INET   = C.AF_INET
-	sysAF_INET6  = C.AF_INET6
-
-	sysSOCK_RAW = C.SOCK_RAW
-)
-
-type iovec C.struct_iovec
-
-type msghdr C.struct_msghdr
-
-type cmsghdr C.struct_cmsghdr
-
-type sockaddrInet C.struct_sockaddr_in
-
-type sockaddrInet6 C.struct_sockaddr_in6
-
-const (
-	sizeofIovec   = C.sizeof_struct_iovec
-	sizeofMsghdr  = C.sizeof_struct_msghdr
-	sizeofCmsghdr = C.sizeof_struct_cmsghdr
-
-	sizeofSockaddrInet  = C.sizeof_struct_sockaddr_in
-	sizeofSockaddrInet6 = C.sizeof_struct_sockaddr_in6
-)

vendor/golang.org/x/net/internal/socket/defs_freebsd.go

@@ -1,44 +0,0 @@
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-// +godefs map struct_in6_addr [16]byte /* in6_addr */
-
-package socket
-
-/*
-#include <sys/socket.h>
-
-#include <netinet/in.h>
-*/
-import "C"
-
-const (
-	sysAF_UNSPEC = C.AF_UNSPEC
-	sysAF_INET   = C.AF_INET
-	sysAF_INET6  = C.AF_INET6
-
-	sysSOCK_RAW = C.SOCK_RAW
-)
-
-type iovec C.struct_iovec
-
-type msghdr C.struct_msghdr
-
-type cmsghdr C.struct_cmsghdr
-
-type sockaddrInet C.struct_sockaddr_in
-
-type sockaddrInet6 C.struct_sockaddr_in6
-
-const (
-	sizeofIovec   = C.sizeof_struct_iovec
-	sizeofMsghdr  = C.sizeof_struct_msghdr
-	sizeofCmsghdr = C.sizeof_struct_cmsghdr
-
-	sizeofSockaddrInet  = C.sizeof_struct_sockaddr_in
-	sizeofSockaddrInet6 = C.sizeof_struct_sockaddr_in6
-)

vendor/golang.org/x/net/internal/socket/defs_linux.go

@@ -1,49 +0,0 @@
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-// +godefs map struct_in6_addr [16]byte /* in6_addr */
-
-package socket
-
-/*
-#include <linux/in.h>
-#include <linux/in6.h>
-
-#define _GNU_SOURCE
-#include <sys/socket.h>
-*/
-import "C"
-
-const (
-	sysAF_UNSPEC = C.AF_UNSPEC
-	sysAF_INET   = C.AF_INET
-	sysAF_INET6  = C.AF_INET6
-
-	sysSOCK_RAW = C.SOCK_RAW
-)
-
-type iovec C.struct_iovec
-
-type msghdr C.struct_msghdr
-
-type mmsghdr C.struct_mmsghdr
-
-type cmsghdr C.struct_cmsghdr
-
-type sockaddrInet C.struct_sockaddr_in
-
-type sockaddrInet6 C.struct_sockaddr_in6
-
-const (
-	sizeofIovec   = C.sizeof_struct_iovec
-	sizeofMsghdr  = C.sizeof_struct_msghdr
-	sizeofMmsghdr = C.sizeof_struct_mmsghdr
-	sizeofCmsghdr = C.sizeof_struct_cmsghdr
-
-	sizeofSockaddrInet  = C.sizeof_struct_sockaddr_in
-	sizeofSockaddrInet6 = C.sizeof_struct_sockaddr_in6
-)

vendor/golang.org/x/net/internal/socket/defs_netbsd.go

@@ -1,47 +0,0 @@
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-// +godefs map struct_in6_addr [16]byte /* in6_addr */
-
-package socket
-
-/*
-#include <sys/socket.h>
-
-#include <netinet/in.h>
-*/
-import "C"
-
-const (
-	sysAF_UNSPEC = C.AF_UNSPEC
-	sysAF_INET   = C.AF_INET
-	sysAF_INET6  = C.AF_INET6
-
-	sysSOCK_RAW = C.SOCK_RAW
-)
-
-type iovec C.struct_iovec
-
-type msghdr C.struct_msghdr
-
-type mmsghdr C.struct_mmsghdr
-
-type cmsghdr C.struct_cmsghdr
-
-type sockaddrInet C.struct_sockaddr_in
-
-type sockaddrInet6 C.struct_sockaddr_in6
-
-const (
-	sizeofIovec   = C.sizeof_struct_iovec
-	sizeofMsghdr  = C.sizeof_struct_msghdr
-	sizeofMmsghdr = C.sizeof_struct_mmsghdr
-	sizeofCmsghdr = C.sizeof_struct_cmsghdr
-
-	sizeofSockaddrInet  = C.sizeof_struct_sockaddr_in
-	sizeofSockaddrInet6 = C.sizeof_struct_sockaddr_in6
-)

vendor/golang.org/x/net/internal/socket/defs_openbsd.go

@@ -1,44 +0,0 @@
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-// +godefs map struct_in6_addr [16]byte /* in6_addr */
-
-package socket
-
-/*
-#include <sys/socket.h>
-
-#include <netinet/in.h>
-*/
-import "C"
-
-const (
-	sysAF_UNSPEC = C.AF_UNSPEC
-	sysAF_INET   = C.AF_INET
-	sysAF_INET6  = C.AF_INET6
-
-	sysSOCK_RAW = C.SOCK_RAW
-)
-
-type iovec C.struct_iovec
-
-type msghdr C.struct_msghdr
-
-type cmsghdr C.struct_cmsghdr
-
-type sockaddrInet C.struct_sockaddr_in
-
-type sockaddrInet6 C.struct_sockaddr_in6
-
-const (
-	sizeofIovec   = C.sizeof_struct_iovec
-	sizeofMsghdr  = C.sizeof_struct_msghdr
-	sizeofCmsghdr = C.sizeof_struct_cmsghdr
-
-	sizeofSockaddrInet  = C.sizeof_struct_sockaddr_in
-	sizeofSockaddrInet6 = C.sizeof_struct_sockaddr_in6
-)

vendor/golang.org/x/net/internal/socket/defs_solaris.go

@@ -1,44 +0,0 @@
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-// +godefs map struct_in6_addr [16]byte /* in6_addr */
-
-package socket
-
-/*
-#include <sys/socket.h>
-
-#include <netinet/in.h>
-*/
-import "C"
-
-const (
-	sysAF_UNSPEC = C.AF_UNSPEC
-	sysAF_INET   = C.AF_INET
-	sysAF_INET6  = C.AF_INET6
-
-	sysSOCK_RAW = C.SOCK_RAW
-)
-
-type iovec C.struct_iovec
-
-type msghdr C.struct_msghdr
-
-type cmsghdr C.struct_cmsghdr
-
-type sockaddrInet C.struct_sockaddr_in
-
-type sockaddrInet6 C.struct_sockaddr_in6
-
-const (
-	sizeofIovec   = C.sizeof_struct_iovec
-	sizeofMsghdr  = C.sizeof_struct_msghdr
-	sizeofCmsghdr = C.sizeof_struct_cmsghdr
-
-	sizeofSockaddrInet  = C.sizeof_struct_sockaddr_in
-	sizeofSockaddrInet6 = C.sizeof_struct_sockaddr_in6
-)

vendor/golang.org/x/net/internal/socket/iovec_32bit.go

@@ -10,6 +10,10 @@ package socket
 import "unsafe"
 
 func (v *iovec) set(b []byte) {
+	l := len(b)
+	if l == 0 {
+		return
+	}
 	v.Base = (*byte)(unsafe.Pointer(&b[0]))
-	v.Len = uint32(len(b))
+	v.Len = uint32(l)
 }

vendor/golang.org/x/net/internal/socket/iovec_64bit.go

@@ -10,6 +10,10 @@ package socket
 import "unsafe"
 
 func (v *iovec) set(b []byte) {
+	l := len(b)
+	if l == 0 {
+		return
+	}
 	v.Base = (*byte)(unsafe.Pointer(&b[0]))
-	v.Len = uint64(len(b))
+	v.Len = uint64(l)
 }

vendor/golang.org/x/net/internal/socket/iovec_solaris_64bit.go

@@ -10,6 +10,10 @@ package socket
 import "unsafe"
 
 func (v *iovec) set(b []byte) {
+	l := len(b)
+	if l == 0 {
+		return
+	}
 	v.Base = (*int8)(unsafe.Pointer(&b[0]))
-	v.Len = uint64(len(b))
+	v.Len = uint64(l)
 }

vendor/golang.org/x/net/internal/socket/msghdr_bsdvar.go

@@ -7,6 +7,10 @@
 package socket
 
 func (h *msghdr) setIov(vs []iovec) {
+	l := len(vs)
+	if l == 0 {
+		return
+	}
 	h.Iov = &vs[0]
-	h.Iovlen = int32(len(vs))
+	h.Iovlen = int32(l)
 }

vendor/golang.org/x/net/internal/socket/msghdr_linux_32bit.go

@@ -10,8 +10,12 @@ package socket
 import "unsafe"
 
 func (h *msghdr) setIov(vs []iovec) {
+	l := len(vs)
+	if l == 0 {
+		return
+	}
 	h.Iov = &vs[0]
-	h.Iovlen = uint32(len(vs))
+	h.Iovlen = uint32(l)
 }
 
 func (h *msghdr) setControl(b []byte) {

vendor/golang.org/x/net/internal/socket/msghdr_linux_64bit.go

@@ -10,8 +10,12 @@ package socket
 import "unsafe"
 
 func (h *msghdr) setIov(vs []iovec) {
+	l := len(vs)
+	if l == 0 {
+		return
+	}
 	h.Iov = &vs[0]
-	h.Iovlen = uint64(len(vs))
+	h.Iovlen = uint64(l)
 }
 
 func (h *msghdr) setControl(b []byte) {

vendor/golang.org/x/net/internal/socket/msghdr_openbsd.go

@@ -5,6 +5,10 @@
 package socket
 
 func (h *msghdr) setIov(vs []iovec) {
+	l := len(vs)
+	if l == 0 {
+		return
+	}
 	h.Iov = &vs[0]
-	h.Iovlen = uint32(len(vs))
+	h.Iovlen = uint32(l)
 }

vendor/golang.org/x/net/internal/socket/msghdr_solaris_64bit.go

@@ -13,8 +13,10 @@ func (h *msghdr) pack(vs []iovec, bs [][]byte, oob []byte, sa []byte) {
 	for i := range vs {
 		vs[i].set(bs[i])
 	}
-	h.Iov = &vs[0]
-	h.Iovlen = int32(len(vs))
+	if len(vs) > 0 {
+		h.Iov = &vs[0]
+		h.Iovlen = int32(len(vs))
+	}
 	if len(oob) > 0 {
 		h.Accrights = (*int8)(unsafe.Pointer(&oob[0]))
 		h.Accrightslen = int32(len(oob))

vendor/golang.org/x/net/internal/socket/sys_posix.go

@@ -34,7 +34,7 @@ func marshalSockaddr(ip net.IP, port int, zone string) []byte {
 	if ip4 := ip.To4(); ip4 != nil {
 		b := make([]byte, sizeofSockaddrInet)
 		switch runtime.GOOS {
-		case "linux", "solaris", "windows":
+		case "android", "linux", "solaris", "windows":
 			NativeEndian.PutUint16(b[:2], uint16(sysAF_INET))
 		default:
 			b[0] = sizeofSockaddrInet
@@ -47,7 +47,7 @@ func marshalSockaddr(ip net.IP, port int, zone string) []byte {
 	if ip6 := ip.To16(); ip6 != nil && ip.To4() == nil {
 		b := make([]byte, sizeofSockaddrInet6)
 		switch runtime.GOOS {
-		case "linux", "solaris", "windows":
+		case "android", "linux", "solaris", "windows":
 			NativeEndian.PutUint16(b[:2], uint16(sysAF_INET6))
 		default:
 			b[0] = sizeofSockaddrInet6
@@ -69,7 +69,7 @@ func parseInetAddr(b []byte, network string) (net.Addr, error) {
 	}
 	var af int
 	switch runtime.GOOS {
-	case "linux", "solaris", "windows":
+	case "android", "linux", "solaris", "windows":
 		af = int(NativeEndian.Uint16(b[:2]))
 	default:
 		af = int(b[1])

vendor/golang.org/x/net/ipv4/defs_darwin.go

@@ -1,77 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-
-package ipv4
-
-/*
-#include <sys/socket.h>
-
-#include <netinet/in.h>
-*/
-import "C"
-
-const (
-	sysIP_OPTIONS     = C.IP_OPTIONS
-	sysIP_HDRINCL     = C.IP_HDRINCL
-	sysIP_TOS         = C.IP_TOS
-	sysIP_TTL         = C.IP_TTL
-	sysIP_RECVOPTS    = C.IP_RECVOPTS
-	sysIP_RECVRETOPTS = C.IP_RECVRETOPTS
-	sysIP_RECVDSTADDR = C.IP_RECVDSTADDR
-	sysIP_RETOPTS     = C.IP_RETOPTS
-	sysIP_RECVIF      = C.IP_RECVIF
-	sysIP_STRIPHDR    = C.IP_STRIPHDR
-	sysIP_RECVTTL     = C.IP_RECVTTL
-	sysIP_BOUND_IF    = C.IP_BOUND_IF
-	sysIP_PKTINFO     = C.IP_PKTINFO
-	sysIP_RECVPKTINFO = C.IP_RECVPKTINFO
-
-	sysIP_MULTICAST_IF           = C.IP_MULTICAST_IF
-	sysIP_MULTICAST_TTL          = C.IP_MULTICAST_TTL
-	sysIP_MULTICAST_LOOP         = C.IP_MULTICAST_LOOP
-	sysIP_ADD_MEMBERSHIP         = C.IP_ADD_MEMBERSHIP
-	sysIP_DROP_MEMBERSHIP        = C.IP_DROP_MEMBERSHIP
-	sysIP_MULTICAST_VIF          = C.IP_MULTICAST_VIF
-	sysIP_MULTICAST_IFINDEX      = C.IP_MULTICAST_IFINDEX
-	sysIP_ADD_SOURCE_MEMBERSHIP  = C.IP_ADD_SOURCE_MEMBERSHIP
-	sysIP_DROP_SOURCE_MEMBERSHIP = C.IP_DROP_SOURCE_MEMBERSHIP
-	sysIP_BLOCK_SOURCE           = C.IP_BLOCK_SOURCE
-	sysIP_UNBLOCK_SOURCE         = C.IP_UNBLOCK_SOURCE
-	sysMCAST_JOIN_GROUP          = C.MCAST_JOIN_GROUP
-	sysMCAST_LEAVE_GROUP         = C.MCAST_LEAVE_GROUP
-	sysMCAST_JOIN_SOURCE_GROUP   = C.MCAST_JOIN_SOURCE_GROUP
-	sysMCAST_LEAVE_SOURCE_GROUP  = C.MCAST_LEAVE_SOURCE_GROUP
-	sysMCAST_BLOCK_SOURCE        = C.MCAST_BLOCK_SOURCE
-	sysMCAST_UNBLOCK_SOURCE      = C.MCAST_UNBLOCK_SOURCE
-
-	sizeofSockaddrStorage = C.sizeof_struct_sockaddr_storage
-	sizeofSockaddrInet    = C.sizeof_struct_sockaddr_in
-	sizeofInetPktinfo     = C.sizeof_struct_in_pktinfo
-
-	sizeofIPMreq         = C.sizeof_struct_ip_mreq
-	sizeofIPMreqn        = C.sizeof_struct_ip_mreqn
-	sizeofIPMreqSource   = C.sizeof_struct_ip_mreq_source
-	sizeofGroupReq       = C.sizeof_struct_group_req
-	sizeofGroupSourceReq = C.sizeof_struct_group_source_req
-)
-
-type sockaddrStorage C.struct_sockaddr_storage
-
-type sockaddrInet C.struct_sockaddr_in
-
-type inetPktinfo C.struct_in_pktinfo
-
-type ipMreq C.struct_ip_mreq
-
-type ipMreqn C.struct_ip_mreqn
-
-type ipMreqSource C.struct_ip_mreq_source
-
-type groupReq C.struct_group_req
-
-type groupSourceReq C.struct_group_source_req

vendor/golang.org/x/net/ipv4/defs_dragonfly.go

@@ -1,38 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-
-package ipv4
-
-/*
-#include <netinet/in.h>
-*/
-import "C"
-
-const (
-	sysIP_OPTIONS     = C.IP_OPTIONS
-	sysIP_HDRINCL     = C.IP_HDRINCL
-	sysIP_TOS         = C.IP_TOS
-	sysIP_TTL         = C.IP_TTL
-	sysIP_RECVOPTS    = C.IP_RECVOPTS
-	sysIP_RECVRETOPTS = C.IP_RECVRETOPTS
-	sysIP_RECVDSTADDR = C.IP_RECVDSTADDR
-	sysIP_RETOPTS     = C.IP_RETOPTS
-	sysIP_RECVIF      = C.IP_RECVIF
-	sysIP_RECVTTL     = C.IP_RECVTTL
-
-	sysIP_MULTICAST_IF    = C.IP_MULTICAST_IF
-	sysIP_MULTICAST_TTL   = C.IP_MULTICAST_TTL
-	sysIP_MULTICAST_LOOP  = C.IP_MULTICAST_LOOP
-	sysIP_MULTICAST_VIF   = C.IP_MULTICAST_VIF
-	sysIP_ADD_MEMBERSHIP  = C.IP_ADD_MEMBERSHIP
-	sysIP_DROP_MEMBERSHIP = C.IP_DROP_MEMBERSHIP
-
-	sizeofIPMreq = C.sizeof_struct_ip_mreq
-)
-
-type ipMreq C.struct_ip_mreq

vendor/golang.org/x/net/ipv4/defs_freebsd.go

@@ -1,75 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-
-package ipv4
-
-/*
-#include <sys/socket.h>
-
-#include <netinet/in.h>
-*/
-import "C"
-
-const (
-	sysIP_OPTIONS     = C.IP_OPTIONS
-	sysIP_HDRINCL     = C.IP_HDRINCL
-	sysIP_TOS         = C.IP_TOS
-	sysIP_TTL         = C.IP_TTL
-	sysIP_RECVOPTS    = C.IP_RECVOPTS
-	sysIP_RECVRETOPTS = C.IP_RECVRETOPTS
-	sysIP_RECVDSTADDR = C.IP_RECVDSTADDR
-	sysIP_SENDSRCADDR = C.IP_SENDSRCADDR
-	sysIP_RETOPTS     = C.IP_RETOPTS
-	sysIP_RECVIF      = C.IP_RECVIF
-	sysIP_ONESBCAST   = C.IP_ONESBCAST
-	sysIP_BINDANY     = C.IP_BINDANY
-	sysIP_RECVTTL     = C.IP_RECVTTL
-	sysIP_MINTTL      = C.IP_MINTTL
-	sysIP_DONTFRAG    = C.IP_DONTFRAG
-	sysIP_RECVTOS     = C.IP_RECVTOS
-
-	sysIP_MULTICAST_IF           = C.IP_MULTICAST_IF
-	sysIP_MULTICAST_TTL          = C.IP_MULTICAST_TTL
-	sysIP_MULTICAST_LOOP         = C.IP_MULTICAST_LOOP
-	sysIP_ADD_MEMBERSHIP         = C.IP_ADD_MEMBERSHIP
-	sysIP_DROP_MEMBERSHIP        = C.IP_DROP_MEMBERSHIP
-	sysIP_MULTICAST_VIF          = C.IP_MULTICAST_VIF
-	sysIP_ADD_SOURCE_MEMBERSHIP  = C.IP_ADD_SOURCE_MEMBERSHIP
-	sysIP_DROP_SOURCE_MEMBERSHIP = C.IP_DROP_SOURCE_MEMBERSHIP
-	sysIP_BLOCK_SOURCE           = C.IP_BLOCK_SOURCE
-	sysIP_UNBLOCK_SOURCE         = C.IP_UNBLOCK_SOURCE
-	sysMCAST_JOIN_GROUP          = C.MCAST_JOIN_GROUP
-	sysMCAST_LEAVE_GROUP         = C.MCAST_LEAVE_GROUP
-	sysMCAST_JOIN_SOURCE_GROUP   = C.MCAST_JOIN_SOURCE_GROUP
-	sysMCAST_LEAVE_SOURCE_GROUP  = C.MCAST_LEAVE_SOURCE_GROUP
-	sysMCAST_BLOCK_SOURCE        = C.MCAST_BLOCK_SOURCE
-	sysMCAST_UNBLOCK_SOURCE      = C.MCAST_UNBLOCK_SOURCE
-
-	sizeofSockaddrStorage = C.sizeof_struct_sockaddr_storage
-	sizeofSockaddrInet    = C.sizeof_struct_sockaddr_in
-
-	sizeofIPMreq         = C.sizeof_struct_ip_mreq
-	sizeofIPMreqn        = C.sizeof_struct_ip_mreqn
-	sizeofIPMreqSource   = C.sizeof_struct_ip_mreq_source
-	sizeofGroupReq       = C.sizeof_struct_group_req
-	sizeofGroupSourceReq = C.sizeof_struct_group_source_req
-)
-
-type sockaddrStorage C.struct_sockaddr_storage
-
-type sockaddrInet C.struct_sockaddr_in
-
-type ipMreq C.struct_ip_mreq
-
-type ipMreqn C.struct_ip_mreqn
-
-type ipMreqSource C.struct_ip_mreq_source
-
-type groupReq C.struct_group_req
-
-type groupSourceReq C.struct_group_source_req

vendor/golang.org/x/net/ipv4/defs_linux.go

@@ -1,122 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build ignore
-
-// +godefs map struct_in_addr [4]byte /* in_addr */
-
-package ipv4
-
-/*
-#include <time.h>
-
-#include <linux/errqueue.h>
-#include <linux/icmp.h>
-#include <linux/in.h>
-#include <linux/filter.h>
-#include <sys/socket.h>
-*/
-import "C"
-
-const (
-	sysIP_TOS             = C.IP_TOS
-	sysIP_TTL             = C.IP_TTL
-	sysIP_HDRINCL         = C.IP_HDRINCL
-	sysIP_OPTIONS         = C.IP_OPTIONS
-	sysIP_ROUTER_ALERT    = C.IP_ROUTER_ALERT
-	sysIP_RECVOPTS        = C.IP_RECVOPTS
-	sysIP_RETOPTS         = C.IP_RETOPTS
-	sysIP_PKTINFO         = C.IP_PKTINFO
-	sysIP_PKTOPTIONS      = C.IP_PKTOPTIONS
-	sysIP_MTU_DISCOVER    = C.IP_MTU_DISCOVER
-	sysIP_RECVERR         = C.IP_RECVERR
-	sysIP_RECVTTL         = C.IP_RECVTTL
-	sysIP_RECVTOS         = C.IP_RECVTOS
-	sysIP_MTU             = C.IP_MTU
-	sysIP_FREEBIND        = C.IP_FREEBIND
-	sysIP_TRANSPARENT     = C.IP_TRANSPARENT
-	sysIP_RECVRETOPTS     = C.IP_RECVRETOPTS
-	sysIP_ORIGDSTADDR     = C.IP_ORIGDSTADDR
-	sysIP_RECVORIGDSTADDR = C.IP_RECVORIGDSTADDR
-	sysIP_MINTTL          = C.IP_MINTTL
-	sysIP_NODEFRAG        = C.IP_NODEFRAG
-	sysIP_UNICAST_IF      = C.IP_UNICAST_IF
-
-	sysIP_MULTICAST_IF           = C.IP_MULTICAST_IF
-	sysIP_MULTICAST_TTL          = C.IP_MULTICAST_TTL
-	sysIP_MULTICAST_LOOP         = C.IP_MULTICAST_LOOP
-	sysIP_ADD_MEMBERSHIP         = C.IP_ADD_MEMBERSHIP
-	sysIP_DROP_MEMBERSHIP        = C.IP_DROP_MEMBERSHIP
-	sysIP_UNBLOCK_SOURCE         = C.IP_UNBLOCK_SOURCE
-	sysIP_BLOCK_SOURCE           = C.IP_BLOCK_SOURCE
-	sysIP_ADD_SOURCE_MEMBERSHIP  = C.IP_ADD_SOURCE_MEMBERSHIP
-	sysIP_DROP_SOURCE_MEMBERSHIP = C.IP_DROP_SOURCE_MEMBERSHIP
-	sysIP_MSFILTER               = C.IP_MSFILTER
-	sysMCAST_JOIN_GROUP          = C.MCAST_JOIN_GROUP
-	sysMCAST_LEAVE_GROUP         = C.MCAST_LEAVE_GROUP
-	sysMCAST_JOIN_SOURCE_GROUP   = C.MCAST_JOIN_SOURCE_GROUP
-	sysMCAST_LEAVE_SOURCE_GROUP  = C.MCAST_LEAVE_SOURCE_GROUP
-	sysMCAST_BLOCK_SOURCE        = C.MCAST_BLOCK_SOURCE
-	sysMCAST_UNBLOCK_SOURCE      = C.MCAST_UNBLOCK_SOURCE
-	sysMCAST_MSFILTER            = C.MCAST_MSFILTER
-	sysIP_MULTICAST_ALL          = C.IP_MULTICAST_ALL
-
-	//sysIP_PMTUDISC_DONT      = C.IP_PMTUDISC_DONT
-	//sysIP_PMTUDISC_WANT      = C.IP_PMTUDISC_WANT
-	//sysIP_PMTUDISC_DO        = C.IP_PMTUDISC_DO
-	//sysIP_PMTUDISC_PROBE     = C.IP_PMTUDISC_PROBE
-	//sysIP_PMTUDISC_INTERFACE = C.IP_PMTUDISC_INTERFACE
-	//sysIP_PMTUDISC_OMIT      = C.IP_PMTUDISC_OMIT
-
-	sysICMP_FILTER = C.ICMP_FILTER
-
-	sysSO_EE_ORIGIN_NONE         = C.SO_EE_ORIGIN_NONE
-	sysSO_EE_ORIGIN_LOCAL        = C.SO_EE_ORIGIN_LOCAL
-	sysSO_EE_ORIGIN_ICMP         = C.SO_EE_ORIGIN_ICMP
-	sysSO_EE_ORIGIN_ICMP6        = C.SO_EE_ORIGIN_ICMP6
-	sysSO_EE_ORIGIN_TXSTATUS     = C.SO_EE_ORIGIN_TXSTATUS
-	sysSO_EE_ORIGIN_TIMESTAMPING = C.SO_EE_ORIGIN_TIMESTAMPING
-
-	sysSOL_SOCKET       = C.SOL_SOCKET
-	sysSO_ATTACH_FILTER = C.SO_ATTACH_FILTER
-
-	sizeofKernelSockaddrStorage = C.sizeof_struct___kernel_sockaddr_storage
-	sizeofSockaddrInet          = C.sizeof_struct_sockaddr_in
-	sizeofInetPktinfo           = C.sizeof_struct_in_pktinfo
-	sizeofSockExtendedErr       = C.sizeof_struct_sock_extended_err
-
-	sizeofIPMreq         = C.sizeof_struct_ip_mreq
-	sizeofIPMreqn        = C.sizeof_struct_ip_mreqn
-	sizeofIPMreqSource   = C.sizeof_struct_ip_mreq_source
-	sizeofGroupReq       = C.sizeof_struct_group_req
-	sizeofGroupSourceReq = C.sizeof_struct_group_source_req
-
-	sizeofICMPFilter = C.sizeof_struct_icmp_filter
-
-	sizeofSockFprog = C.sizeof_struct_sock_fprog
-)
-
-type kernelSockaddrStorage C.struct___kernel_sockaddr_storage
-
-type sockaddrInet C.struct_sockaddr_in
-
-type inetPktinfo C.struct_in_pktinfo
-
-type sockExtendedErr C.struct_sock_extended_err
-
-type ipMreq C.struct_ip_mreq
-
-type ipMreqn C.struct_ip_mreqn
-
-type ipMreqSource C.struct_ip_mreq_source
-
-type groupReq C.struct_group_req
-
-type groupSourceReq C.struct_group_source_req
-
-type icmpFilter C.struct_icmp_filter
-
-type sockFProg C.struct_sock_fprog
-
-type sockFilter C.struct_sock_filter