Merge pull request #372 from prometheus/superq/vendoring

Update vendoring

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

@@ -1,10 +1,21 @@
-# 0.9.0 (Unreleased)
+# 0.10.0
+
+* feature: Add a test hook (#180)
+* feature: `ParseLevel` is now case-insensitive (#326)
+* feature: `FieldLogger` interface that generalizes `Logger` and `Entry` (#308)
+* performance: avoid re-allocations on `WithFields` (#335)
+
+# 0.9.0
 
 * logrus/text_formatter: don't emit empty msg
 * logrus/hooks/airbrake: move out of main repository
 * logrus/hooks/sentry: move out of main repository
 * logrus/hooks/papertrail: move out of main repository
 * logrus/hooks/bugsnag: move out of main repository
+* logrus/core: run tests with `-race`
+* logrus/core: detect TTY based on `stderr`
+* logrus/core: support `WithError` on logger
+* logrus/core: Solaris support
 
 # 0.8.7
 

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

@@ -1,4 +1,4 @@
-# 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 reference](https://godoc.org/github.com/Sirupsen/logrus?status.png)][godoc]
+# 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
@@ -12,7 +12,7 @@ plain text):
 
 ![Colored](http://i.imgur.com/PY7qMwd.png)
 
-With `log.Formatter = new(logrus.JSONFormatter)`, for easy parsing by logstash
+With `log.SetFormatter(&log.JSONFormatter{})`, for easy parsing by logstash
 or Splunk:
 
 ```json
@@ -32,7 +32,7 @@ ocean","size":10,"time":"2014-03-10 19:57:38.562264131 -0400 EDT"}
 "time":"2014-03-10 19:57:38.562543128 -0400 EDT"}
 ```
 
-With the default `log.Formatter = new(&log.TextFormatter{})` when a TTY is not
+With the default `log.SetFormatter(&log.TextFormatter{})` when a TTY is not
 attached, the output is compatible with the
 [logfmt](http://godoc.org/github.com/kr/logfmt) format:
 
@@ -218,9 +218,22 @@ Note: Syslog hook also support connecting to local syslog (Ex. "/dev/log" or "/v
 | [Rollrus](https://github.com/heroku/rollrus) | Hook for sending errors to rollbar |
 | [Fluentd](https://github.com/evalphobia/logrus_fluent) | Hook for logging to fluentd |
 | [Mongodb](https://github.com/weekface/mgorus) | Hook for logging to mongodb |
+| [Influxus] (http://github.com/vlad-doru/influxus) | Hook for concurrently logging to [InfluxDB] (http://influxdata.com/) |
 | [InfluxDB](https://github.com/Abramovic/logrus_influxdb) | Hook for logging to influxdb |
 | [Octokit](https://github.com/dorajistyle/logrus-octokit-hook) | Hook for logging to github via octokit |
 | [DeferPanic](https://github.com/deferpanic/dp-logrus) | Hook for logging to DeferPanic |
+| [Redis-Hook](https://github.com/rogierlommers/logrus-redis-hook) | Hook for logging to a ELK stack (through Redis) |
+| [Amqp-Hook](https://github.com/vladoatanasov/logrus_amqp) | Hook for logging to Amqp broker (Like RabbitMQ) |
+| [KafkaLogrus](https://github.com/goibibo/KafkaLogrus) | Hook for logging to kafka |
+| [Typetalk](https://github.com/dragon3/logrus-typetalk-hook) | Hook for logging to [Typetalk](https://www.typetalk.in/) |
+| [ElasticSearch](https://github.com/sohlich/elogrus) | Hook for logging to ElasticSearch|
+| [Sumorus](https://github.com/doublefree/sumorus) | Hook for logging to [SumoLogic](https://www.sumologic.com/)|
+| [Scribe](https://github.com/sagar8192/logrus-scribe-hook) | Hook for logging to [Scribe](https://github.com/facebookarchive/scribe)|
+| [Logstash](https://github.com/bshuster-repo/logrus-logstash-hook) | Hook for logging to [Logstash](https://www.elastic.co/products/logstash) |
+| [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 |
+| [Logmatic.io](https://github.com/logmatic/logmatic-go) | Hook for logging to [Logmatic.io](http://logmatic.io/) |
+| [Pushover](https://github.com/toorop/logrus_pushover) | Send error via [Pushover](https://pushover.net) |
+
 
 #### Level logging
 
@@ -298,14 +311,10 @@ The built-in logging formatters are:
     field to `true`.  To force no colored output even if there is a TTY  set the
     `DisableColors` field to `true`
 * `logrus.JSONFormatter`. Logs fields as JSON.
-* `logrus/formatters/logstash.LogstashFormatter`. Logs fields as [Logstash](http://logstash.net) Events.
-
-    ```go
-      logrus.SetFormatter(&logstash.LogstashFormatter{Type: "application_name"})
-    ```
 
 Third party logging formatters:
 
+* [`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!̣͔̲̻͊̄ ̙̘̦̹̦.
 
@@ -361,5 +370,56 @@ 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) |
 
-[godoc]: https://godoc.org/github.com/Sirupsen/logrus
+#### Testing
+
+Logrus has a built in facility for asserting the presence of log messages. This is implemented through the `test` hook and provides:
+
+* decorators for existing logger (`test.NewLocal` and `test.NewGlobal`) which basically just add the `test` hook
+* a test logger (`test.NewNullLogger`) that just records log messages (and does not output any):
+
+```go
+logger, hook := NewNullLogger()
+logger.Error("Hello error")
+
+assert.Equal(1, len(hook.Entries))
+assert.Equal(logrus.ErrorLevel, hook.LastEntry().Level)
+assert.Equal("Hello error", hook.LastEntry().Message)
+
+hook.Reset()
+assert.Nil(hook.LastEntry())
+```
+
+#### Fatal handlers
+
+Logrus can register one or more functions that will be called when any `fatal`
+level message is logged. The registered handlers will be executed before
+logrus performs a `os.Exit(1)`. This behavior may be helpful if callers need
+to gracefully shutdown. Unlike a `panic("Something went wrong...")` call which can be intercepted with a deferred `recover` a call to `os.Exit(1)` can not be intercepted.
+
+```
+...
+handler := func() {
+  // gracefully shutdown something...
+}
+logrus.RegisterExitHandler(handler)
+...
+```
+
+#### Thread safty
+
+By default Logger is protected by mutex for concurrent writes, this mutex is invoked when calling hooks and writing logs.
+If you are sure such locking is not needed, you can call logger.SetNoLock() to disable the locking.
+
+Situation when locking is not needed includes:
+
+* You have no hooks registered, or hooks calling is already thread-safe.
+
+* Writing to logger.Out is already thread-safe, for example:
+
+  1) logger.Out is protected by locks.
+
+  2) logger.Out is a os.File handler opened with `O_APPEND` flag, and every write is smaller than 4k. (This allow multi-thread/multi-process writing)
+
+     (Refer to http://www.notthewizard.com/2014/06/17/are-files-appends-really-atomic/)

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

@@ -0,0 +1,64 @@
+package logrus
+
+// The following code was sourced and modified from the
+// https://bitbucket.org/tebeka/atexit package governed by the following license:
+//
+// Copyright (c) 2012 Miki Tebeka <miki.tebeka@gmail.com>.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+import (
+	"fmt"
+	"os"
+)
+
+var handlers = []func(){}
+
+func runHandler(handler func()) {
+	defer func() {
+		if err := recover(); err != nil {
+			fmt.Fprintln(os.Stderr, "Error: Logrus exit handler error:", err)
+		}
+	}()
+
+	handler()
+}
+
+func runHandlers() {
+	for _, handler := range handlers {
+		runHandler(handler)
+	}
+}
+
+// Exit runs all the Logrus atexit handlers and then terminates the program using os.Exit(code)
+func Exit(code int) {
+	runHandlers()
+	os.Exit(code)
+}
+
+// RegisterExitHandler adds a Logrus Exit handler, call logrus.Exit to invoke
+// all handlers. The handlers will also be invoked when any Fatal log entry is
+// made.
+//
+// This method is useful when a caller wishes to use logrus to log a fatal
+// message but also needs to gracefully shutdown. An example usecase could be
+// closing database connections, or sending a alert that the application is
+// closing.
+func RegisterExitHandler(handler func()) {
+	handlers = append(handlers, handler)
+}

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

@@ -3,11 +3,21 @@ package logrus
 import (
 	"bytes"
 	"fmt"
-	"io"
 	"os"
+	"sync"
 	"time"
 )
 
+var bufferPool *sync.Pool
+
+func init() {
+	bufferPool = &sync.Pool{
+		New: func() interface{} {
+			return new(bytes.Buffer)
+		},
+	}
+}
+
 // Defines the key when adding errors using WithError.
 var ErrorKey = "error"
 
@@ -29,6 +39,9 @@ type Entry struct {
 
 	// Message passed to Debug, Info, Warn, Error, Fatal or Panic
 	Message string
+
+	// When formatter is called in entry.log(), an Buffer may be set to entry
+	Buffer *bytes.Buffer
 }
 
 func NewEntry(logger *Logger) *Entry {
@@ -39,21 +52,15 @@ func NewEntry(logger *Logger) *Entry {
 	}
 }
 
-// Returns a reader for the entry, which is a proxy to the formatter.
-func (entry *Entry) Reader() (*bytes.Buffer, error) {
-	serialized, err := entry.Logger.Formatter.Format(entry)
-	return bytes.NewBuffer(serialized), err
-}
-
 // Returns the string representation from the reader and ultimately the
 // formatter.
 func (entry *Entry) String() (string, error) {
-	reader, err := entry.Reader()
+	serialized, err := entry.Logger.Formatter.Format(entry)
 	if err != nil {
 		return "", err
 	}
-
-	return reader.String(), err
+	str := string(serialized)
+	return str, nil
 }
 
 // Add an error as single field (using the key defined in ErrorKey) to the Entry.
@@ -68,7 +75,7 @@ func (entry *Entry) WithField(key string, value interface{}) *Entry {
 
 // Add a map of fields to the Entry.
 func (entry *Entry) WithFields(fields Fields) *Entry {
-	data := Fields{}
+	data := make(Fields, len(entry.Data)+len(fields))
 	for k, v := range entry.Data {
 		data[k] = v
 	}
@@ -81,6 +88,7 @@ func (entry *Entry) WithFields(fields Fields) *Entry {
 // This function is not declared with a pointer value because otherwise
 // race conditions will occur when using multiple goroutines
 func (entry Entry) log(level Level, msg string) {
+	var buffer *bytes.Buffer
 	entry.Time = time.Now()
 	entry.Level = level
 	entry.Message = msg
@@ -90,21 +98,24 @@ func (entry Entry) log(level Level, msg string) {
 		fmt.Fprintf(os.Stderr, "Failed to fire hook: %v\n", err)
 		entry.Logger.mu.Unlock()
 	}
-
-	reader, err := entry.Reader()
+	buffer = bufferPool.Get().(*bytes.Buffer)
+	buffer.Reset()
+	defer bufferPool.Put(buffer)
+	entry.Buffer = buffer
+	serialized, err := entry.Logger.Formatter.Format(&entry)
+	entry.Buffer = nil
 	if err != nil {
 		entry.Logger.mu.Lock()
 		fmt.Fprintf(os.Stderr, "Failed to obtain reader, %v\n", err)
 		entry.Logger.mu.Unlock()
-	}
-
+	} else {
 		entry.Logger.mu.Lock()
-	defer entry.Logger.mu.Unlock()
-
-	_, err = io.Copy(entry.Logger.Out, reader)
+		_, err = entry.Logger.Out.Write(serialized)
 		if err != nil {
 			fmt.Fprintf(os.Stderr, "Failed to write to log, %v\n", err)
 		}
+		entry.Logger.mu.Unlock()
+	}
 
 	// To avoid Entry#log() returning a value that only would make sense for
 	// panic() to use in Entry#Panic(), we avoid the allocation by checking
@@ -150,7 +161,7 @@ func (entry *Entry) Fatal(args ...interface{}) {
 	if entry.Logger.Level >= FatalLevel {
 		entry.log(FatalLevel, fmt.Sprint(args...))
 	}
-	os.Exit(1)
+	Exit(1)
 }
 
 func (entry *Entry) Panic(args ...interface{}) {
@@ -198,7 +209,7 @@ func (entry *Entry) Fatalf(format string, args ...interface{}) {
 	if entry.Logger.Level >= FatalLevel {
 		entry.Fatal(fmt.Sprintf(format, args...))
 	}
-	os.Exit(1)
+	Exit(1)
 }
 
 func (entry *Entry) Panicf(format string, args ...interface{}) {
@@ -245,7 +256,7 @@ func (entry *Entry) Fatalln(args ...interface{}) {
 	if entry.Logger.Level >= FatalLevel {
 		entry.Fatal(entry.sprintlnn(args...))
 	}
-	os.Exit(1)
+	Exit(1)
 }
 
 func (entry *Entry) Panicln(args ...interface{}) {

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

@@ -31,18 +31,15 @@ type Formatter interface {
 // It's not exported because it's still using Data in an opinionated way. It's to
 // avoid code duplication between the two default formatters.
 func prefixFieldClashes(data Fields) {
-	_, ok := data["time"]
-	if ok {
-		data["fields.time"] = data["time"]
+	if t, ok := data["time"]; ok {
+		data["fields.time"] = t
 	}
 
-	_, ok = data["msg"]
-	if ok {
-		data["fields.msg"] = data["msg"]
+	if m, ok := data["msg"]; ok {
+		data["fields.msg"] = m
 	}
 
-	_, ok = data["level"]
-	if ok {
-		data["fields.level"] = data["level"]
+	if l, ok := data["level"]; ok {
+		data["fields.level"] = l
 	}
 }

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

@@ -26,8 +26,31 @@ type Logger struct {
 	// to) `logrus.Info`, which allows Info(), Warn(), Error() and Fatal() to be
 	// logged. `logrus.Debug` is useful in
 	Level Level
-	// Used to sync writing to the log.
-	mu sync.Mutex
+	// Used to sync writing to the log. Locking is enabled by Default
+	mu MutexWrap
+	// Reusable empty entry
+	entryPool sync.Pool
+}
+
+type MutexWrap struct {
+	lock     sync.Mutex
+	disabled bool
+}
+
+func (mw *MutexWrap) Lock() {
+	if !mw.disabled {
+		mw.lock.Lock()
+	}
+}
+
+func (mw *MutexWrap) Unlock() {
+	if !mw.disabled {
+		mw.lock.Unlock()
+	}
+}
+
+func (mw *MutexWrap) Disable() {
+	mw.disabled = true
 }
 
 // Creates a new logger. Configuration should be set by changing `Formatter`,
@@ -51,162 +74,235 @@ func New() *Logger {
 	}
 }
 
-// Adds a field to the log entry, note that you it doesn't log until you call
+func (logger *Logger) newEntry() *Entry {
+	entry, ok := logger.entryPool.Get().(*Entry)
+	if ok {
+		return entry
+	}
+	return NewEntry(logger)
+}
+
+func (logger *Logger) releaseEntry(entry *Entry) {
+	logger.entryPool.Put(entry)
+}
+
+// Adds a field to the log entry, note that it doesn't log until you call
 // Debug, Print, Info, Warn, Fatal or Panic. It only creates a log entry.
 // If you want multiple fields, use `WithFields`.
 func (logger *Logger) WithField(key string, value interface{}) *Entry {
-	return NewEntry(logger).WithField(key, value)
+	entry := logger.newEntry()
+	defer logger.releaseEntry(entry)
+	return entry.WithField(key, value)
 }
 
 // Adds a struct of fields to the log entry. All it does is call `WithField` for
 // each `Field`.
 func (logger *Logger) WithFields(fields Fields) *Entry {
-	return NewEntry(logger).WithFields(fields)
+	entry := logger.newEntry()
+	defer logger.releaseEntry(entry)
+	return entry.WithFields(fields)
 }
 
 // Add an error as single field to the log entry.  All it does is call
 // `WithError` for the given `error`.
 func (logger *Logger) WithError(err error) *Entry {
-	return NewEntry(logger).WithError(err)
+	entry := logger.newEntry()
+	defer logger.releaseEntry(entry)
+	return entry.WithError(err)
 }
 
 func (logger *Logger) Debugf(format string, args ...interface{}) {
 	if logger.Level >= DebugLevel {
-		NewEntry(logger).Debugf(format, args...)
+		entry := logger.newEntry()
+		entry.Debugf(format, args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Infof(format string, args ...interface{}) {
 	if logger.Level >= InfoLevel {
-		NewEntry(logger).Infof(format, args...)
+		entry := logger.newEntry()
+		entry.Infof(format, args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Printf(format string, args ...interface{}) {
-	NewEntry(logger).Printf(format, args...)
+	entry := logger.newEntry()
+	entry.Printf(format, args...)
+	logger.releaseEntry(entry)
 }
 
 func (logger *Logger) Warnf(format string, args ...interface{}) {
 	if logger.Level >= WarnLevel {
-		NewEntry(logger).Warnf(format, args...)
+		entry := logger.newEntry()
+		entry.Warnf(format, args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Warningf(format string, args ...interface{}) {
 	if logger.Level >= WarnLevel {
-		NewEntry(logger).Warnf(format, args...)
+		entry := logger.newEntry()
+		entry.Warnf(format, args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Errorf(format string, args ...interface{}) {
 	if logger.Level >= ErrorLevel {
-		NewEntry(logger).Errorf(format, args...)
+		entry := logger.newEntry()
+		entry.Errorf(format, args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Fatalf(format string, args ...interface{}) {
 	if logger.Level >= FatalLevel {
-		NewEntry(logger).Fatalf(format, args...)
+		entry := logger.newEntry()
+		entry.Fatalf(format, args...)
+		logger.releaseEntry(entry)
 	}
-	os.Exit(1)
+	Exit(1)
 }
 
 func (logger *Logger) Panicf(format string, args ...interface{}) {
 	if logger.Level >= PanicLevel {
-		NewEntry(logger).Panicf(format, args...)
+		entry := logger.newEntry()
+		entry.Panicf(format, args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Debug(args ...interface{}) {
 	if logger.Level >= DebugLevel {
-		NewEntry(logger).Debug(args...)
+		entry := logger.newEntry()
+		entry.Debug(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Info(args ...interface{}) {
 	if logger.Level >= InfoLevel {
-		NewEntry(logger).Info(args...)
+		entry := logger.newEntry()
+		entry.Info(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Print(args ...interface{}) {
-	NewEntry(logger).Info(args...)
+	entry := logger.newEntry()
+	entry.Info(args...)
+	logger.releaseEntry(entry)
 }
 
 func (logger *Logger) Warn(args ...interface{}) {
 	if logger.Level >= WarnLevel {
-		NewEntry(logger).Warn(args...)
+		entry := logger.newEntry()
+		entry.Warn(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Warning(args ...interface{}) {
 	if logger.Level >= WarnLevel {
-		NewEntry(logger).Warn(args...)
+		entry := logger.newEntry()
+		entry.Warn(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Error(args ...interface{}) {
 	if logger.Level >= ErrorLevel {
-		NewEntry(logger).Error(args...)
+		entry := logger.newEntry()
+		entry.Error(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Fatal(args ...interface{}) {
 	if logger.Level >= FatalLevel {
-		NewEntry(logger).Fatal(args...)
+		entry := logger.newEntry()
+		entry.Fatal(args...)
+		logger.releaseEntry(entry)
 	}
-	os.Exit(1)
+	Exit(1)
 }
 
 func (logger *Logger) Panic(args ...interface{}) {
 	if logger.Level >= PanicLevel {
-		NewEntry(logger).Panic(args...)
+		entry := logger.newEntry()
+		entry.Panic(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Debugln(args ...interface{}) {
 	if logger.Level >= DebugLevel {
-		NewEntry(logger).Debugln(args...)
+		entry := logger.newEntry()
+		entry.Debugln(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Infoln(args ...interface{}) {
 	if logger.Level >= InfoLevel {
-		NewEntry(logger).Infoln(args...)
+		entry := logger.newEntry()
+		entry.Infoln(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Println(args ...interface{}) {
-	NewEntry(logger).Println(args...)
+	entry := logger.newEntry()
+	entry.Println(args...)
+	logger.releaseEntry(entry)
 }
 
 func (logger *Logger) Warnln(args ...interface{}) {
 	if logger.Level >= WarnLevel {
-		NewEntry(logger).Warnln(args...)
+		entry := logger.newEntry()
+		entry.Warnln(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Warningln(args ...interface{}) {
 	if logger.Level >= WarnLevel {
-		NewEntry(logger).Warnln(args...)
+		entry := logger.newEntry()
+		entry.Warnln(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Errorln(args ...interface{}) {
 	if logger.Level >= ErrorLevel {
-		NewEntry(logger).Errorln(args...)
+		entry := logger.newEntry()
+		entry.Errorln(args...)
+		logger.releaseEntry(entry)
 	}
 }
 
 func (logger *Logger) Fatalln(args ...interface{}) {
 	if logger.Level >= FatalLevel {
-		NewEntry(logger).Fatalln(args...)
+		entry := logger.newEntry()
+		entry.Fatalln(args...)
+		logger.releaseEntry(entry)
 	}
-	os.Exit(1)
+	Exit(1)
 }
 
 func (logger *Logger) Panicln(args ...interface{}) {
 	if logger.Level >= PanicLevel {
-		NewEntry(logger).Panicln(args...)
+		entry := logger.newEntry()
+		entry.Panicln(args...)
+		logger.releaseEntry(entry)
 	}
 }
+
+//When file is opened with appending mode, it's safe to
+//write concurrently to a file (within 4k message on Linux).
+//In these cases user can choose to disable the lock.
+func (logger *Logger) SetNoLock() {
+	logger.mu.Disable()
+}

vendor/github.com/Sirupsen/logrus/logrus.go

@@ -3,6 +3,7 @@ package logrus
 import (
 	"fmt"
 	"log"
+	"strings"
 )
 
 // Fields type, used to pass to `WithFields`.
@@ -33,7 +34,7 @@ func (level Level) String() string {
 
 // ParseLevel takes a string level and returns the Logrus log level constant.
 func ParseLevel(lvl string) (Level, error) {
-	switch lvl {
+	switch strings.ToLower(lvl) {
 	case "panic":
 		return PanicLevel, nil
 	case "fatal":
@@ -52,6 +53,16 @@ func ParseLevel(lvl string) (Level, error) {
 	return l, fmt.Errorf("not a valid logrus Level: %q", lvl)
 }
 
+// A constant exposing all logging levels
+var AllLevels = []Level{
+	PanicLevel,
+	FatalLevel,
+	ErrorLevel,
+	WarnLevel,
+	InfoLevel,
+	DebugLevel,
+}
+
 // These are the different logging levels. You can set the logging level to log
 // on your instance of logger, obtained with `logrus.New()`.
 const (
@@ -96,3 +107,37 @@ type StdLogger interface {
 	Panicf(string, ...interface{})
 	Panicln(...interface{})
 }
+
+// The FieldLogger interface generalizes the Entry and Logger types
+type FieldLogger interface {
+	WithField(key string, value interface{}) *Entry
+	WithFields(fields Fields) *Entry
+	WithError(err error) *Entry
+
+	Debugf(format string, args ...interface{})
+	Infof(format string, args ...interface{})
+	Printf(format string, args ...interface{})
+	Warnf(format string, args ...interface{})
+	Warningf(format string, args ...interface{})
+	Errorf(format string, args ...interface{})
+	Fatalf(format string, args ...interface{})
+	Panicf(format string, args ...interface{})
+
+	Debug(args ...interface{})
+	Info(args ...interface{})
+	Print(args ...interface{})
+	Warn(args ...interface{})
+	Warning(args ...interface{})
+	Error(args ...interface{})
+	Fatal(args ...interface{})
+	Panic(args ...interface{})
+
+	Debugln(args ...interface{})
+	Infoln(args ...interface{})
+	Println(args ...interface{})
+	Warnln(args ...interface{})
+	Warningln(args ...interface{})
+	Errorln(args ...interface{})
+	Fatalln(args ...interface{})
+	Panicln(args ...interface{})
+}

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

@@ -0,0 +1,8 @@
+// +build appengine
+
+package logrus
+
+// IsTerminal returns true if stderr's file descriptor is a terminal.
+func IsTerminal() bool {
+	return true
+}

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

@@ -1,4 +1,5 @@
 // +build darwin freebsd openbsd netbsd dragonfly
+// +build !appengine
 
 package logrus
 

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

@@ -3,6 +3,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build !appengine
+
 package logrus
 
 import "syscall"

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

@@ -4,6 +4,7 @@
 // license that can be found in the LICENSE file.
 
 // +build linux darwin freebsd openbsd netbsd dragonfly
+// +build !appengine
 
 package logrus
 

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

@@ -1,4 +1,4 @@
-// +build solaris
+// +build solaris,!appengine
 
 package logrus
 

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

@@ -3,7 +3,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build windows
+// +build windows,!appengine
 
 package logrus
 

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

@@ -57,6 +57,7 @@ type TextFormatter struct {
 }
 
 func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
+	var b *bytes.Buffer
 	var keys []string = make([]string, 0, len(entry.Data))
 	for k := range entry.Data {
 		keys = append(keys, k)
@@ -65,8 +66,11 @@ func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 	if !f.DisableSorting {
 		sort.Strings(keys)
 	}
-
-	b := &bytes.Buffer{}
+	if entry.Buffer != nil {
+		b = entry.Buffer
+	} else {
+		b = &bytes.Buffer{}
+	}
 
 	prefixFieldClashes(entry.Data)
 
@@ -118,7 +122,8 @@ func (f *TextFormatter) printColored(b *bytes.Buffer, entry *Entry, keys []strin
 	}
 	for _, k := range keys {
 		v := entry.Data[k]
-		fmt.Fprintf(b, " \x1b[%dm%s\x1b[0m=%+v", levelColor, k, v)
+		fmt.Fprintf(b, " \x1b[%dm%s\x1b[0m=", levelColor, k)
+		f.appendValue(b, v)
 	}
 }
 
@@ -128,34 +133,36 @@ func needsQuoting(text string) bool {
 			(ch >= 'A' && ch <= 'Z') ||
 			(ch >= '0' && ch <= '9') ||
 			ch == '-' || ch == '.') {
-			return false
-		}
-	}
 			return true
 		}
+	}
+	return false
+}
 
 func (f *TextFormatter) appendKeyValue(b *bytes.Buffer, key string, value interface{}) {
 
 	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 needsQuoting(value) {
+		if !needsQuoting(value) {
 			b.WriteString(value)
 		} else {
 			fmt.Fprintf(b, "%q", value)
 		}
 	case error:
 		errmsg := value.Error()
-		if needsQuoting(errmsg) {
+		if !needsQuoting(errmsg) {
 			b.WriteString(errmsg)
 		} else {
-			fmt.Fprintf(b, "%q", value)
+			fmt.Fprintf(b, "%q", errmsg)
 		}
 	default:
 		fmt.Fprint(b, value)
 	}
-
-	b.WriteByte(' ')
 }

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

@@ -7,18 +7,40 @@ import (
 )
 
 func (logger *Logger) Writer() *io.PipeWriter {
+	return logger.WriterLevel(InfoLevel)
+}
+
+func (logger *Logger) WriterLevel(level Level) *io.PipeWriter {
 	reader, writer := io.Pipe()
 
-	go logger.writerScanner(reader)
+	var printFunc func(args ...interface{})
+	switch level {
+	case DebugLevel:
+		printFunc = logger.Debug
+	case InfoLevel:
+		printFunc = logger.Info
+	case WarnLevel:
+		printFunc = logger.Warn
+	case ErrorLevel:
+		printFunc = logger.Error
+	case FatalLevel:
+		printFunc = logger.Fatal
+	case PanicLevel:
+		printFunc = logger.Panic
+	default:
+		printFunc = logger.Print
+	}
+
+	go logger.writerScanner(reader, printFunc)
 	runtime.SetFinalizer(writer, writerFinalizer)
 
 	return writer
 }
 
-func (logger *Logger) writerScanner(reader *io.PipeReader) {
+func (logger *Logger) writerScanner(reader *io.PipeReader, printFunc func(args ...interface{})) {
 	scanner := bufio.NewScanner(reader)
 	for scanner.Scan() {
-		logger.Print(scanner.Text())
+		printFunc(scanner.Text())
 	}
 	if err := scanner.Err(); err != nil {
 		logger.Errorf("Error while reading from Writer: %s", err)

vendor/github.com/beevik/ntp/ntp.go

@@ -16,7 +16,7 @@ import (
 	"time"
 )
 
-type mode byte
+type mode uint8
 
 const (
 	reserved mode = 0 + iota
@@ -39,40 +39,53 @@ var (
 	ntpEpoch = time.Date(1900, 1, 1, 0, 0, 0, 0, time.UTC)
 )
 
-type ntpTime struct {
-	Seconds  uint32
-	Fraction uint32
+// An ntpTime is a 64-bit fixed-point (Q32.32) representation of the number of
+// seconds elapsed since the NTP epoch.
+type ntpTime uint64
+
+// Duration interprets the fixed-point ntpTime as a number of elapsed seconds
+// and returns the corresponding time.Duration value.
+func (t ntpTime) Duration() time.Duration {
+	sec := (t >> 32) * nanoPerSec
+	frac := (t & 0xffffffff) * nanoPerSec >> 32
+	return time.Duration(sec + frac)
 }
 
+// Time interprets the fixed-point ntpTime as a an absolute time and returns
+// the corresponding time.Time value.
 func (t ntpTime) Time() time.Time {
-	return ntpEpoch.Add(t.sinceEpoch())
+	return ntpEpoch.Add(t.Duration())
 }
 
-// sinceEpoch converts the ntpTime record t into a duration since the NTP
-// epoch time (Jan 1, 1900).
-func (t ntpTime) sinceEpoch() time.Duration {
-	sec := time.Duration(t.Seconds) * time.Second
-	frac := time.Duration(uint64(t.Fraction) * nanoPerSec >> 32)
-	return sec + frac
-}
-
-// toNtpTime converts the time value t into an ntpTime representation.
+// toNtpTime converts the time.Time value t into its 64-bit fixed-point
+// ntpTime representation.
 func toNtpTime(t time.Time) ntpTime {
 	nsec := uint64(t.Sub(ntpEpoch))
-	return ntpTime{
-		Seconds:  uint32(nsec / nanoPerSec),
-		Fraction: uint32((nsec % nanoPerSec) << 32 / nanoPerSec),
+	sec := nsec / nanoPerSec
+	frac := (nsec - sec*nanoPerSec) << 32 / nanoPerSec
+	return ntpTime(sec<<32 | frac)
 }
+
+// An ntpTimeShort is a 32-bit fixed-point (Q16.16) representation of the
+// number of seconds elapsed since the NTP epoch.
+type ntpTimeShort uint32
+
+// Duration interprets the fixed-point ntpTimeShort as a number of elapsed
+// seconds and returns the corresponding time.Duration value.
+func (t ntpTimeShort) Duration() time.Duration {
+	sec := (t >> 16) * nanoPerSec
+	frac := (t & 0xffff) * nanoPerSec >> 16
+	return time.Duration(sec + frac)
 }
 
 // msg is an internal representation of an NTP packet.
 type msg struct {
-	LiVnMode       byte // Leap Indicator (2) + Version (3) + Mode (3)
-	Stratum        byte
-	Poll           byte
-	Precision      byte
-	RootDelay      uint32
-	RootDispersion uint32
+	LiVnMode       uint8 // Leap Indicator (2) + Version (3) + Mode (3)
+	Stratum        uint8
+	Poll           int8
+	Precision      int8
+	RootDelay      ntpTimeShort
+	RootDispersion ntpTimeShort
 	ReferenceID    uint32
 	ReferenceTime  ntpTime
 	OriginTime     ntpTime
@@ -87,7 +100,7 @@ func (m *msg) setVersion(v int) {
 
 // setMode sets the NTP protocol mode on the message.
 func (m *msg) setMode(md mode) {
-	m.LiVnMode = (m.LiVnMode & 0xf8) | byte(md)
+	m.LiVnMode = (m.LiVnMode & 0xf8) | uint8(md)
 }
 
 // A Response contains time data, some of which is returned by the NTP server
@@ -96,7 +109,12 @@ type Response struct {
 	Time           time.Time     // receive time reported by the server
 	RTT            time.Duration // round-trip time between client and server
 	ClockOffset    time.Duration // local clock offset relative to server
+	Poll           time.Duration // maximum polling interval
+	Precision      time.Duration // precision of server's system clock
 	Stratum        uint8         // stratum level of NTP server's clock
+	ReferenceID    uint32        // server's reference ID
+	RootDelay      time.Duration // server's RTT to the reference clock
+	RootDispersion time.Duration // server's dispersion to the reference clock
 }
 
 // Query returns information from the remote NTP server specifed as host.  NTP
@@ -112,7 +130,12 @@ func Query(host string, version int) (*Response, error) {
 		Time:           m.ReceiveTime.Time(),
 		RTT:            rtt(m.OriginTime, m.ReceiveTime, m.TransmitTime, now),
 		ClockOffset:    offset(m.OriginTime, m.ReceiveTime, m.TransmitTime, now),
+		Poll:           toInterval(m.Poll),
+		Precision:      toInterval(m.Precision),
 		Stratum:        m.Stratum,
+		ReferenceID:    m.ReferenceID,
+		RootDelay:      m.RootDelay.Duration(),
+		RootDispersion: m.RootDispersion.Duration(),
 	}
 
 	// https://tools.ietf.org/html/rfc5905#section-7.3
@@ -204,3 +227,14 @@ func offset(t1, t2, t3, t4 ntpTime) time.Duration {
 	b := t3.Time().Sub(t4.Time())
 	return (a + b) / time.Duration(2)
 }
+
+func toInterval(t int8) time.Duration {
+	switch {
+	case t > 0:
+		return time.Duration(uint64(time.Second) << uint(t))
+	case t < 0:
+		return time.Duration(uint64(time.Second) >> uint(-t))
+	default:
+		return time.Second
+	}
+}

vendor/github.com/beorn7/perks/LICENSE

@@ -0,0 +1,20 @@
+Copyright (C) 2013 Blake Mizerany
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

vendor/github.com/beorn7/perks/quantile/stream.go

@@ -133,7 +133,7 @@ func (s *Stream) Query(q float64) float64 {
 		if l == 0 {
 			return 0
 		}
-		i := int(float64(l) * q)
+		i := int(math.Ceil(float64(l) * q))
 		if i > 0 {
 			i -= 1
 		}

vendor/github.com/coreos/go-systemd/dbus/dbus.go

@@ -83,10 +83,20 @@ type Conn struct {
 	}
 }
 
-// New establishes a connection to the system bus and authenticates.
+// New establishes a connection to any available bus and authenticates.
 // Callers should call Close() when done with the connection.
 func New() (*Conn, error) {
-	return newConnection(func() (*dbus.Conn, error) {
+	conn, err := NewSystemConnection()
+	if err != nil && os.Geteuid() == 0 {
+		return NewSystemdConnection()
+	}
+	return conn, err
+}
+
+// NewSystemConnection establishes a connection to the system bus and authenticates.
+// Callers should call Close() when done with the connection
+func NewSystemConnection() (*Conn, error) {
+	return NewConnection(func() (*dbus.Conn, error) {
 		return dbusAuthHelloConnection(dbus.SystemBusPrivate)
 	})
 }
@@ -95,7 +105,7 @@ func New() (*Conn, error) {
 // authenticates. This can be used to connect to systemd user instances.
 // Callers should call Close() when done with the connection.
 func NewUserConnection() (*Conn, error) {
-	return newConnection(func() (*dbus.Conn, error) {
+	return NewConnection(func() (*dbus.Conn, error) {
 		return dbusAuthHelloConnection(dbus.SessionBusPrivate)
 	})
 }
@@ -104,7 +114,7 @@ func NewUserConnection() (*Conn, error) {
 // This can be used for communicating with systemd without a dbus daemon.
 // Callers should call Close() when done with the connection.
 func NewSystemdConnection() (*Conn, error) {
-	return newConnection(func() (*dbus.Conn, error) {
+	return NewConnection(func() (*dbus.Conn, error) {
 		// We skip Hello when talking directly to systemd.
 		return dbusAuthConnection(func() (*dbus.Conn, error) {
 			return dbus.Dial("unix:path=/run/systemd/private")
@@ -118,13 +128,18 @@ func (c *Conn) Close() {
 	c.sigconn.Close()
 }
 
-func newConnection(createBus func() (*dbus.Conn, error)) (*Conn, error) {
-	sysconn, err := createBus()
+// NewConnection establishes a connection to a bus using a caller-supplied function.
+// This allows connecting to remote buses through a user-supplied mechanism.
+// The supplied function may be called multiple times, and should return independent connections.
+// The returned connection must be fully initialised: the org.freedesktop.DBus.Hello call must have succeeded,
+// and any authentication should be handled by the function.
+func NewConnection(dialBus func() (*dbus.Conn, error)) (*Conn, error) {
+	sysconn, err := dialBus()
 	if err != nil {
 		return nil, err
 	}
 
-	sigconn, err := createBus()
+	sigconn, err := dialBus()
 	if err != nil {
 		sysconn.Close()
 		return nil, err

vendor/github.com/coreos/go-systemd/dbus/methods.go

@@ -199,6 +199,11 @@ func (c *Conn) GetUnitProperty(unit string, propertyName string) (*Property, err
 	return c.getProperty(unit, "org.freedesktop.systemd1.Unit", propertyName)
 }
 
+// GetServiceProperty returns property for given service name and property name
+func (c *Conn) GetServiceProperty(service string, propertyName string) (*Property, error) {
+	return c.getProperty(service, "org.freedesktop.systemd1.Service", propertyName)
+}
+
 // GetUnitTypeProperties returns the extra properties for a unit, specific to the unit type.
 // Valid values for unitType: Service, Socket, Target, Device, Mount, Automount, Snapshot, Timer, Swap, Path, Slice, Scope
 // return "dbus.Error: Unknown interface" if the unitType is not the correct type of the unit
@@ -234,12 +239,11 @@ type UnitStatus struct {
 	JobPath     dbus.ObjectPath // The job object path
 }
 
-// ListUnits returns an array with all currently loaded units. Note that
-// units may be known by multiple names at the same time, and hence there might
-// be more unit names loaded than actual units behind them.
-func (c *Conn) ListUnits() ([]UnitStatus, error) {
+type storeFunc func(retvalues ...interface{}) error
+
+func (c *Conn) listUnitsInternal(f storeFunc) ([]UnitStatus, error) {
 	result := make([][]interface{}, 0)
-	err := c.sysobj.Call("org.freedesktop.systemd1.Manager.ListUnits", 0).Store(&result)
+	err := f(&result)
 	if err != nil {
 		return nil, err
 	}
@@ -263,15 +267,43 @@ func (c *Conn) ListUnits() ([]UnitStatus, error) {
 	return status, nil
 }
 
+// ListUnits returns an array with all currently loaded units. Note that
+// units may be known by multiple names at the same time, and hence there might
+// be more unit names loaded than actual units behind them.
+func (c *Conn) ListUnits() ([]UnitStatus, error) {
+	return c.listUnitsInternal(c.sysobj.Call("org.freedesktop.systemd1.Manager.ListUnits", 0).Store)
+}
+
+// ListUnitsFiltered returns an array with units filtered by state.
+// It takes a list of units' statuses to filter.
+func (c *Conn) ListUnitsFiltered(states []string) ([]UnitStatus, error) {
+	return c.listUnitsInternal(c.sysobj.Call("org.freedesktop.systemd1.Manager.ListUnitsFiltered", 0, states).Store)
+}
+
+// ListUnitsByPatterns returns an array with units.
+// It takes a list of units' statuses and names to filter.
+// Note that units may be known by multiple names at the same time,
+// and hence there might be more unit names loaded than actual units behind them.
+func (c *Conn) ListUnitsByPatterns(states []string, patterns []string) ([]UnitStatus, error) {
+	return c.listUnitsInternal(c.sysobj.Call("org.freedesktop.systemd1.Manager.ListUnitsByPatterns", 0, states, patterns).Store)
+}
+
+// ListUnitsByNames returns an array with units. It takes a list of units'
+// names and returns an UnitStatus array. Comparing to ListUnitsByPatterns
+// method, this method returns statuses even for inactive or non-existing
+// units. Input array should contain exact unit names, but not patterns.
+func (c *Conn) ListUnitsByNames(units []string) ([]UnitStatus, error) {
+	return c.listUnitsInternal(c.sysobj.Call("org.freedesktop.systemd1.Manager.ListUnitsByNames", 0, units).Store)
+}
+
 type UnitFile struct {
 	Path string
 	Type string
 }
 
-// ListUnitFiles returns an array of all available units on disk.
-func (c *Conn) ListUnitFiles() ([]UnitFile, error) {
+func (c *Conn) listUnitFilesInternal(f storeFunc) ([]UnitFile, error) {
 	result := make([][]interface{}, 0)
-	err := c.sysobj.Call("org.freedesktop.systemd1.Manager.ListUnitFiles", 0).Store(&result)
+	err := f(&result)
 	if err != nil {
 		return nil, err
 	}
@@ -295,6 +327,16 @@ func (c *Conn) ListUnitFiles() ([]UnitFile, error) {
 	return files, nil
 }
 
+// ListUnitFiles returns an array of all available units on disk.
+func (c *Conn) ListUnitFiles() ([]UnitFile, error) {
+	return c.listUnitFilesInternal(c.sysobj.Call("org.freedesktop.systemd1.Manager.ListUnitFiles", 0).Store)
+}
+
+// ListUnitFilesByPatterns returns an array of all available units on disk matched the patterns.
+func (c *Conn) ListUnitFilesByPatterns(states []string, patterns []string) ([]UnitFile, error) {
+	return c.listUnitFilesInternal(c.sysobj.Call("org.freedesktop.systemd1.Manager.ListUnitFilesByPatterns", 0, states, patterns).Store)
+}
+
 type LinkUnitFileChange EnableUnitFileChange
 
 // LinkUnitFiles() links unit files (that are located outside of the
@@ -431,6 +473,87 @@ type DisableUnitFileChange struct {
 	Destination string // Destination of the symlink
 }
 
+// MaskUnitFiles masks one or more units in the system
+//
+// It takes three arguments:
+//   * list of units to mask (either just file names or full
+//     absolute paths if the unit files are residing outside
+//     the usual unit search paths)
+//   * runtime to specify whether the unit was enabled for runtime
+//     only (true, /run/systemd/..), or persistently (false, /etc/systemd/..)
+//   * force flag
+func (c *Conn) MaskUnitFiles(files []string, runtime bool, force bool) ([]MaskUnitFileChange, error) {
+	result := make([][]interface{}, 0)
+	err := c.sysobj.Call("org.freedesktop.systemd1.Manager.MaskUnitFiles", 0, files, runtime, force).Store(&result)
+	if err != nil {
+		return nil, err
+	}
+
+	resultInterface := make([]interface{}, len(result))
+	for i := range result {
+		resultInterface[i] = result[i]
+	}
+
+	changes := make([]MaskUnitFileChange, len(result))
+	changesInterface := make([]interface{}, len(changes))
+	for i := range changes {
+		changesInterface[i] = &changes[i]
+	}
+
+	err = dbus.Store(resultInterface, changesInterface...)
+	if err != nil {
+		return nil, err
+	}
+
+	return changes, nil
+}
+
+type MaskUnitFileChange struct {
+	Type        string // Type of the change (one of symlink or unlink)
+	Filename    string // File name of the symlink
+	Destination string // Destination of the symlink
+}
+
+// UnmaskUnitFiles unmasks one or more units in the system
+//
+// It takes two arguments:
+//   * list of unit files to mask (either just file names or full
+//     absolute paths if the unit files are residing outside
+//     the usual unit search paths)
+//   * runtime to specify whether the unit was enabled for runtime
+//     only (true, /run/systemd/..), or persistently (false, /etc/systemd/..)
+func (c *Conn) UnmaskUnitFiles(files []string, runtime bool) ([]UnmaskUnitFileChange, error) {
+	result := make([][]interface{}, 0)
+	err := c.sysobj.Call("org.freedesktop.systemd1.Manager.UnmaskUnitFiles", 0, files, runtime).Store(&result)
+	if err != nil {
+		return nil, err
+	}
+
+	resultInterface := make([]interface{}, len(result))
+	for i := range result {
+		resultInterface[i] = result[i]
+	}
+
+	changes := make([]UnmaskUnitFileChange, len(result))
+	changesInterface := make([]interface{}, len(changes))
+	for i := range changes {
+		changesInterface[i] = &changes[i]
+	}
+
+	err = dbus.Store(resultInterface, changesInterface...)
+	if err != nil {
+		return nil, err
+	}
+
+	return changes, nil
+}
+
+type UnmaskUnitFileChange struct {
+	Type        string // Type of the change (one of symlink or unlink)
+	Filename    string // File name of the symlink
+	Destination string // Destination of the symlink
+}
+
 // Reload instructs systemd to scan for and reload unit files. This is
 // equivalent to a 'systemctl daemon-reload'.
 func (c *Conn) Reload() error {

vendor/github.com/coreos/go-systemd/dbus/properties.go

@@ -78,6 +78,15 @@ func PropRemainAfterExit(b bool) Property {
 	}
 }
 
+// PropType sets the Type service property. See
+// http://www.freedesktop.org/software/systemd/man/systemd.service.html#Type=
+func PropType(t string) Property {
+	return Property{
+		Name:  "Type",
+		Value: dbus.MakeVariant(t),
+	}
+}
+
 // PropDescription sets the Description unit property. See
 // http://www.freedesktop.org/software/systemd/man/systemd.unit#Description=
 func PropDescription(desc string) Property {
@@ -216,3 +225,13 @@ func PropSlice(slice string) Property {
 		Value: dbus.MakeVariant(slice),
 	}
 }
+
+// PropPids sets the PIDs field of scope units used in the initial construction
+// of the scope only and specifies the initial PIDs to add to the scope object.
+// See https://www.freedesktop.org/wiki/Software/systemd/ControlGroupInterface/#properties
+func PropPids(pids ...uint32) Property {
+	return Property{
+		Name:  "PIDs",
+		Value: dbus.MakeVariant(pids),
+	}
+}

vendor/github.com/godbus/dbus/MAINTAINERS

@@ -1,2 +1,3 @@
 Brandon Philips <brandon@ifup.org> (@philips)
 Brian Waldon <brian@waldon.cc> (@bcwaldon)
+John Southworth <jsouthwo@brocade.com> (@jsouthworth)

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

@@ -1,3 +1,5 @@
+[![Build Status](https://travis-ci.org/godbus/dbus.svg?branch=master)](https://travis-ci.org/godbus/dbus)
+
 dbus
 ----
 

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

@@ -16,6 +16,7 @@ var (
 	systemBusLck  sync.Mutex
 	sessionBus    *Conn
 	sessionBusLck sync.Mutex
+	sessionEnvLck sync.Mutex
 )
 
 // ErrClosed is the error returned by calls on a closed connection.
@@ -46,15 +47,13 @@ type Conn struct {
 	calls    map[uint32]*Call
 	callsLck sync.RWMutex
 
-	handlers    map[ObjectPath]map[string]exportWithMapping
-	handlersLck sync.RWMutex
+	handler Handler
 
 	out    chan *Message
 	closed bool
 	outLck sync.RWMutex
 
-	signals    []chan<- *Signal
-	signalsLck sync.Mutex
+	signalHandler SignalHandler
 
 	eavesdropped    chan<- *Message
 	eavesdroppedLck sync.Mutex
@@ -89,14 +88,33 @@ func SessionBus() (conn *Conn, err error) {
 	return
 }
 
-// SessionBusPrivate returns a new private connection to the session bus.
-func SessionBusPrivate() (*Conn, error) {
+func getSessionBusAddress() (string, error) {
+	sessionEnvLck.Lock()
+	defer sessionEnvLck.Unlock()
 	address := os.Getenv("DBUS_SESSION_BUS_ADDRESS")
 	if address != "" && address != "autolaunch:" {
+		return address, nil
+	}
+	return getSessionBusPlatformAddress()
+}
+
+// SessionBusPrivate returns a new private connection to the session bus.
+func SessionBusPrivate() (*Conn, error) {
+	address, err := getSessionBusAddress()
+	if err != nil {
+		return nil, err
+	}
+
 	return Dial(address)
 }
 
-	return sessionBusPlatform()
+// SessionBusPrivate returns a new private connection to the session bus.
+func SessionBusPrivateHandler(handler Handler, signalHandler SignalHandler) (*Conn, error) {
+	address, err := getSessionBusAddress()
+	if err != nil {
+		return nil, err
+	}
+	return DialHandler(address, handler, signalHandler)
 }
 
 // SystemBus returns a shared connection to the system bus, connecting to it if
@@ -128,13 +146,22 @@ func SystemBus() (conn *Conn, err error) {
 	return
 }
 
-// SystemBusPrivate returns a new private connection to the system bus.
-func SystemBusPrivate() (*Conn, error) {
+func getSystemBusAddress() string {
 	address := os.Getenv("DBUS_SYSTEM_BUS_ADDRESS")
 	if address != "" {
-		return Dial(address)
+		return address
 	}
-	return Dial(defaultSystemBusAddress)
+	return defaultSystemBusAddress
+}
+
+// SystemBusPrivate returns a new private connection to the system bus.
+func SystemBusPrivate() (*Conn, error) {
+	return Dial(getSystemBusAddress())
+}
+
+// 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)
 }
 
 // Dial establishes a new private connection to the message bus specified by address.
@@ -143,21 +170,36 @@ func Dial(address string) (*Conn, error) {
 	if err != nil {
 		return nil, err
 	}
-	return newConn(tr)
+	return newConn(tr, newDefaultHandler(), newDefaultSignalHandler())
+}
+
+// DialHandler establishes a new private connection to the message bus specified by address, using the supplied handlers.
+func DialHandler(address string, handler Handler, signalHandler SignalHandler) (*Conn, error) {
+	tr, err := getTransport(address)
+	if err != nil {
+		return nil, err
+	}
+	return newConn(tr, handler, signalHandler)
 }
 
 // NewConn creates a new private *Conn from an already established connection.
 func NewConn(conn io.ReadWriteCloser) (*Conn, error) {
-	return newConn(genericTransport{conn})
+	return NewConnHandler(conn, newDefaultHandler(), newDefaultSignalHandler())
+}
+
+// NewConnHandler creates a new private *Conn from an already established connection, using the supplied handlers.
+func NewConnHandler(conn io.ReadWriteCloser, handler Handler, signalHandler SignalHandler) (*Conn, error) {
+	return newConn(genericTransport{conn}, handler, signalHandler)
 }
 
 // newConn creates a new *Conn from a transport.
-func newConn(tr transport) (*Conn, error) {
+func newConn(tr transport, handler Handler, signalHandler SignalHandler) (*Conn, error) {
 	conn := new(Conn)
 	conn.transport = tr
 	conn.calls = make(map[uint32]*Call)
 	conn.out = make(chan *Message, 10)
-	conn.handlers = make(map[ObjectPath]map[string]exportWithMapping)
+	conn.handler = handler
+	conn.signalHandler = signalHandler
 	conn.nextSerial = 1
 	conn.serialUsed = map[uint32]bool{0: true}
 	conn.busObj = conn.Object("org.freedesktop.DBus", "/org/freedesktop/DBus")
@@ -185,16 +227,21 @@ func (conn *Conn) Close() error {
 	close(conn.out)
 	conn.closed = true
 	conn.outLck.Unlock()
-	conn.signalsLck.Lock()
-	for _, ch := range conn.signals {
-		close(ch)
+
+	if term, ok := conn.signalHandler.(Terminator); ok {
+		term.Terminate()
 	}
-	conn.signalsLck.Unlock()
+
+	if term, ok := conn.handler.(Terminator); ok {
+		term.Terminate()
+	}
+
 	conn.eavesdroppedLck.Lock()
 	if conn.eavesdropped != nil {
 		close(conn.eavesdropped)
 	}
 	conn.eavesdroppedLck.Unlock()
+
 	return conn.transport.Close()
 }
 
@@ -331,17 +378,7 @@ func (conn *Conn) inWorker() {
 						conn.namesLck.Unlock()
 					}
 				}
-				signal := &Signal{
-					Sender: sender,
-					Path:   msg.Headers[FieldPath].value.(ObjectPath),
-					Name:   iface + "." + member,
-					Body:   msg.Body,
-				}
-				conn.signalsLck.Lock()
-				for _, ch := range conn.signals {
-					ch <- signal
-				}
-				conn.signalsLck.Unlock()
+				go conn.handleSignal(msg)
 			case TypeMethodCall:
 				go conn.handleCall(msg)
 			}
@@ -362,6 +399,21 @@ func (conn *Conn) inWorker() {
 	}
 }
 
+func (conn *Conn) handleSignal(msg *Message) {
+	iface := msg.Headers[FieldInterface].value.(string)
+	member := msg.Headers[FieldMember].value.(string)
+	// as per http://dbus.freedesktop.org/doc/dbus-specification.html ,
+	// sender is optional for signals.
+	sender, _ := msg.Headers[FieldSender].value.(string)
+	signal := &Signal{
+		Sender: sender,
+		Path:   msg.Headers[FieldPath].value.(ObjectPath),
+		Name:   iface + "." + member,
+		Body:   msg.Body,
+	}
+	conn.signalHandler.DeliverSignal(iface, member, signal)
+}
+
 // Names returns the list of all names that are currently owned by this
 // connection. The slice is always at least one element long, the first element
 // being the unique name of the connection.
@@ -452,7 +504,19 @@ func (conn *Conn) Send(msg *Message, ch chan *Call) *Call {
 
 // sendError creates an error message corresponding to the parameters and sends
 // it to conn.out.
-func (conn *Conn) sendError(e Error, dest string, serial uint32) {
+func (conn *Conn) sendError(err error, dest string, serial uint32) {
+	var e *Error
+	switch em := err.(type) {
+	case Error:
+		e = &em
+	case *Error:
+		e = em
+	case DBusError:
+		name, body := em.DBusError()
+		e = NewError(name, body)
+	default:
+		e = MakeFailedError(err)
+	}
 	msg := new(Message)
 	msg.Type = TypeError
 	msg.serial = conn.getSerial()
@@ -495,6 +559,14 @@ func (conn *Conn) sendReply(dest string, serial uint32, values ...interface{}) {
 	conn.outLck.RUnlock()
 }
 
+func (conn *Conn) defaultSignalAction(fn func(h *defaultSignalHandler, ch chan<- *Signal), ch chan<- *Signal) {
+	if !isDefaultSignalHandler(conn.signalHandler) {
+		return
+	}
+	handler := conn.signalHandler.(*defaultSignalHandler)
+	fn(handler, ch)
+}
+
 // Signal registers the given channel to be passed all received signal messages.
 // The caller has to make sure that ch is sufficiently buffered; if a message
 // arrives when a write to c is not possible, it is discarded.
@@ -505,22 +577,12 @@ func (conn *Conn) sendReply(dest string, serial uint32, values ...interface{}) {
 // channel for eavesdropped messages, this channel receives all signals, and
 // none of the channels passed to Signal will receive any signals.
 func (conn *Conn) Signal(ch chan<- *Signal) {
-	conn.signalsLck.Lock()
-	conn.signals = append(conn.signals, ch)
-	conn.signalsLck.Unlock()
+	conn.defaultSignalAction((*defaultSignalHandler).addSignal, ch)
 }
 
 // RemoveSignal removes the given channel from the list of the registered channels.
 func (conn *Conn) RemoveSignal(ch chan<- *Signal) {
-	conn.signalsLck.Lock()
-	for i := len(conn.signals) - 1; i >= 0; i-- {
-		if ch == conn.signals[i] {
-			copy(conn.signals[i:], conn.signals[i+1:])
-			conn.signals[len(conn.signals)-1] = nil
-			conn.signals = conn.signals[:len(conn.signals)-1]
-		}
-	}
-	conn.signalsLck.Unlock()
+	conn.defaultSignalAction((*defaultSignalHandler).removeSignal, ch)
 }
 
 // SupportsUnixFDs returns whether the underlying transport supports passing of
@@ -621,16 +683,11 @@ func dereferenceAll(vs []interface{}) []interface{} {
 
 // getKey gets a key from a the list of keys. Returns "" on error / not found...
 func getKey(s, key string) string {
-	i := strings.Index(s, key)
-	if i == -1 {
+	for _, keyEqualsValue := range strings.Split(s, ",") {
+		keyValue := strings.SplitN(keyEqualsValue, "=", 2)
+		if len(keyValue) == 2 && keyValue[0] == key {
+			return keyValue[1]
+		}
+	}
 	return ""
 }
-	if i+len(key)+1 >= len(s) || s[i+len(key)] != '=' {
-		return ""
-	}
-	j := strings.Index(s, ",")
-	if j == -1 {
-		j = len(s)
-	}
-	return s[i+len(key)+1 : j]
-}

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

@@ -5,17 +5,17 @@ import (
 	"os/exec"
 )
 
-func sessionBusPlatform() (*Conn, error) {
+func getSessionBusPlatformAddress() (string, error) {
 	cmd := exec.Command("launchctl", "getenv", "DBUS_LAUNCHD_SESSION_BUS_SOCKET")
 	b, err := cmd.CombinedOutput()
 
 	if err != nil {
-		return nil, err
+		return "", err
 	}
 
 	if len(b) == 0 {
-		return nil, errors.New("dbus: couldn't determine address of session bus")
+		return "", errors.New("dbus: couldn't determine address of session bus")
 	}
 
-	return Dial("unix:path=" + string(b[:len(b)-1]))
+	return "unix:path=" + string(b[:len(b)-1]), nil
 }

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

@@ -5,23 +5,27 @@ package dbus
 import (
 	"bytes"
 	"errors"
+	"os"
 	"os/exec"
 )
 
-func sessionBusPlatform() (*Conn, error) {
+func getSessionBusPlatformAddress() (string, error) {
 	cmd := exec.Command("dbus-launch")
 	b, err := cmd.CombinedOutput()
 
 	if err != nil {
-		return nil, err
+		return "", err
 	}
 
 	i := bytes.IndexByte(b, '=')
 	j := bytes.IndexByte(b, '\n')
 
 	if i == -1 || j == -1 {
-		return nil, errors.New("dbus: couldn't determine address of session bus")
+		return "", errors.New("dbus: couldn't determine address of session bus")
 	}
 
-	return Dial(string(b[i+1 : j]))
+	env, addr := string(b[0:i]), string(b[i+1:j])
+	os.Setenv(env, addr)
+
+	return addr, nil
 }

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

@@ -58,7 +58,19 @@ func store(src, dest interface{}) error {
 		reflect.ValueOf(dest).Elem().Set(reflect.ValueOf(src))
 		return nil
 	} else if hasStruct(dest) {
-		rv := reflect.ValueOf(dest).Elem()
+		return storeStruct(src, dest)
+	} else if hasInterface(dest) {
+		return storeInterfaceContainer(src, dest)
+	} else {
+		return errors.New("dbus.Store: type mismatch")
+	}
+}
+
+func storeStruct(src, dest interface{}) error {
+	rv := reflect.ValueOf(dest)
+	if rv.Kind() == reflect.Interface || rv.Kind() == reflect.Ptr {
+		rv = rv.Elem()
+	}
 	switch rv.Kind() {
 	case reflect.Struct:
 		vs, ok := src.([]interface{})
@@ -71,6 +83,7 @@ func store(src, dest interface{}) error {
 			field := t.Field(i)
 			if field.PkgPath == "" && field.Tag.Get("dbus") != "-" {
 				ndest = append(ndest, rv.Field(i).Addr().Interface())
+
 			}
 		}
 		if len(vs) != len(ndest) {
@@ -109,16 +122,100 @@ func store(src, dest interface{}) error {
 		return errors.New("dbus.Store: type mismatch")
 	}
 	return nil
-	} else {
+}
+
+func storeInterfaceContainer(src, dest interface{}) error {
+	rv := reflect.ValueOf(dest).Elem()
+	switch rv.Kind() {
+	case reflect.Interface:
+		return storeInterfaceValue(src, dest)
+	case reflect.Slice:
+		sv := reflect.ValueOf(src)
+		if sv.Kind() != reflect.Slice {
 			return errors.New("dbus.Store: type mismatch")
 		}
+		rv.Set(reflect.MakeSlice(rv.Type(), sv.Len(), sv.Len()))
+		for i := 0; i < sv.Len(); i++ {
+			v := newInterfaceImplValue(sv.Index(i))
+			err := store(getVariantValue(sv.Index(i)),
+				v.Interface())
+			if err != nil {
+				return err
+			}
+			rv.Index(i).Set(v.Elem())
+		}
+	case reflect.Map:
+		sv := reflect.ValueOf(src)
+		if sv.Kind() != reflect.Map {
+			return errors.New("dbus.Store: type mismatch")
+		}
+		keys := sv.MapKeys()
+		rv.Set(reflect.MakeMap(rv.Type()))
+		for _, key := range keys {
+			elemv := sv.MapIndex(key)
+			v := newInterfaceImplValue(elemv)
+			err := store(getVariantValue(elemv),
+				v.Interface())
+			if err != nil {
+				return err
+			}
+			rv.SetMapIndex(key, v.Elem())
+		}
+	default:
+		return errors.New("dbus.Store: type mismatch")
+	}
+	return nil
+}
+
+func getVariantValue(in reflect.Value) interface{} {
+	if in.Type() == variantType {
+		return in.Interface().(Variant).Value()
+	}
+	return in.Interface()
+}
+
+func newInterfaceImplValue(val reflect.Value) reflect.Value {
+	ifaceType := reflect.TypeOf((*interface{})(nil)).Elem()
+	if !hasVariant(val.Type()) {
+		return reflect.New(val.Type())
+	}
+	switch val.Kind() {
+	case reflect.Map:
+		return reflect.New(reflect.MapOf(val.Type().Key(),
+			ifaceType))
+	case reflect.Slice:
+		return reflect.New(reflect.SliceOf(ifaceType))
+	default:
+		return newInterfaceImplValue(
+			reflect.ValueOf(
+				val.Interface().(Variant).Value()))
+	}
+}
+
+func storeInterfaceValue(src, dest interface{}) error {
+	sv := reflect.ValueOf(src)
+	if sv.Type() == variantType {
+		store(src.(Variant).Value(), dest)
+	} else {
+		reflect.ValueOf(dest).Elem().Set(
+			reflect.ValueOf(src))
+	}
+	return nil
 }
 
 func hasStruct(v interface{}) bool {
+	return hasKind(v, reflect.Struct)
+}
+
+func hasInterface(v interface{}) bool {
+	return hasKind(v, reflect.Interface)
+}
+
+func hasKind(v interface{}, kind reflect.Kind) bool {
 	t := reflect.TypeOf(v)
 	for {
 		switch t.Kind() {
-		case reflect.Struct:
+		case kind:
 			return true
 		case reflect.Slice, reflect.Ptr, reflect.Map:
 			t = t.Elem()
@@ -128,6 +225,20 @@ func hasStruct(v interface{}) bool {
 	}
 }
 
+func hasVariant(t reflect.Type) bool {
+	for {
+		if t == variantType {
+			return true
+		}
+		switch t.Kind() {
+		case reflect.Slice, reflect.Ptr, reflect.Map:
+			t = t.Elem()
+		default:
+			return false
+		}
+	}
+}
+
 // An ObjectPath is an object path as defined by the D-Bus spec.
 type ObjectPath string
 
@@ -177,8 +288,8 @@ func alignment(t reflect.Type) int {
 		return 4
 	case signatureType:
 		return 1
-	case interfacesType: // sometimes used for structs
-		return 8
+	case interfacesType:
+		return 4
 	}
 	switch t.Kind() {
 	case reflect.Uint8:

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

@@ -0,0 +1,283 @@
+package dbus
+
+import (
+	"bytes"
+	"reflect"
+	"strings"
+	"sync"
+)
+
+func newIntrospectIntf(h *defaultHandler) *exportedIntf {
+	methods := make(map[string]Method)
+	methods["Introspect"] = exportedMethod{
+		reflect.ValueOf(func(msg Message) (string, *Error) {
+			path := msg.Headers[FieldPath].value.(ObjectPath)
+			return h.introspectPath(path), nil
+		}),
+	}
+	return newExportedIntf(methods, true)
+}
+
+func newDefaultHandler() *defaultHandler {
+	h := &defaultHandler{
+		objects:     make(map[ObjectPath]*exportedObj),
+		defaultIntf: make(map[string]*exportedIntf),
+	}
+	h.defaultIntf["org.freedesktop.DBus.Introspectable"] = newIntrospectIntf(h)
+	return h
+}
+
+type defaultHandler struct {
+	sync.RWMutex
+	objects     map[ObjectPath]*exportedObj
+	defaultIntf map[string]*exportedIntf
+}
+
+func (h *defaultHandler) PathExists(path ObjectPath) bool {
+	_, ok := h.objects[path]
+	return ok
+}
+
+func (h *defaultHandler) introspectPath(path ObjectPath) string {
+	subpath := make(map[string]struct{})
+	var xml bytes.Buffer
+	xml.WriteString("<node>")
+	for obj, _ := range h.objects {
+		p := string(path)
+		if p != "/" {
+			p += "/"
+		}
+		if strings.HasPrefix(string(obj), p) {
+			node_name := strings.Split(string(obj[len(p):]), "/")[0]
+			subpath[node_name] = struct{}{}
+		}
+	}
+	for s, _ := range subpath {
+		xml.WriteString("\n\t<node name=\"" + s + "\"/>")
+	}
+	xml.WriteString("\n</node>")
+	return xml.String()
+}
+
+func (h *defaultHandler) LookupObject(path ObjectPath) (ServerObject, bool) {
+	h.RLock()
+	defer h.RUnlock()
+	object, ok := h.objects[path]
+	if ok {
+		return object, ok
+	}
+
+	// If an object wasn't found for this exact path,
+	// look for a matching subtree registration
+	subtreeObject := newExportedObject()
+	path = path[:strings.LastIndex(string(path), "/")]
+	for len(path) > 0 {
+		object, ok = h.objects[path]
+		if ok {
+			for name, iface := range object.interfaces {
+				// Only include this handler if it registered for the subtree
+				if iface.isFallbackInterface() {
+					subtreeObject.interfaces[name] = iface
+				}
+			}
+			break
+		}
+
+		path = path[:strings.LastIndex(string(path), "/")]
+	}
+
+	for name, intf := range h.defaultIntf {
+		if _, exists := subtreeObject.interfaces[name]; exists {
+			continue
+		}
+		subtreeObject.interfaces[name] = intf
+	}
+
+	return subtreeObject, true
+}
+
+func (h *defaultHandler) AddObject(path ObjectPath, object *exportedObj) {
+	h.Lock()
+	h.objects[path] = object
+	h.Unlock()
+}
+
+func (h *defaultHandler) DeleteObject(path ObjectPath) {
+	h.Lock()
+	delete(h.objects, path)
+	h.Unlock()
+}
+
+type exportedMethod struct {
+	reflect.Value
+}
+
+func (m exportedMethod) Call(args ...interface{}) ([]interface{}, error) {
+	t := m.Type()
+
+	params := make([]reflect.Value, len(args))
+	for i := 0; i < len(args); i++ {
+		params[i] = reflect.ValueOf(args[i]).Elem()
+	}
+
+	ret := m.Value.Call(params)
+
+	err := ret[t.NumOut()-1].Interface().(*Error)
+	ret = ret[:t.NumOut()-1]
+	out := make([]interface{}, len(ret))
+	for i, val := range ret {
+		out[i] = val.Interface()
+	}
+	if err == nil {
+		//concrete type to interface nil is a special case
+		return out, nil
+	}
+	return out, err
+}
+
+func (m exportedMethod) NumArguments() int {
+	return m.Value.Type().NumIn()
+}
+
+func (m exportedMethod) ArgumentValue(i int) interface{} {
+	return reflect.Zero(m.Type().In(i)).Interface()
+}
+
+func (m exportedMethod) NumReturns() int {
+	return m.Value.Type().NumOut()
+}
+
+func (m exportedMethod) ReturnValue(i int) interface{} {
+	return reflect.Zero(m.Type().Out(i)).Interface()
+}
+
+func newExportedObject() *exportedObj {
+	return &exportedObj{
+		interfaces: make(map[string]*exportedIntf),
+	}
+}
+
+type exportedObj struct {
+	interfaces map[string]*exportedIntf
+}
+
+func (obj *exportedObj) LookupInterface(name string) (Interface, bool) {
+	if name == "" {
+		return obj, true
+	}
+	intf, exists := obj.interfaces[name]
+	return intf, exists
+}
+
+func (obj *exportedObj) AddInterface(name string, iface *exportedIntf) {
+	obj.interfaces[name] = iface
+}
+
+func (obj *exportedObj) DeleteInterface(name string) {
+	delete(obj.interfaces, name)
+}
+
+func (obj *exportedObj) LookupMethod(name string) (Method, bool) {
+	for _, intf := range obj.interfaces {
+		method, exists := intf.LookupMethod(name)
+		if exists {
+			return method, exists
+		}
+	}
+	return nil, false
+}
+
+func (obj *exportedObj) isFallbackInterface() bool {
+	return false
+}
+
+func newExportedIntf(methods map[string]Method, includeSubtree bool) *exportedIntf {
+	return &exportedIntf{
+		methods:        methods,
+		includeSubtree: includeSubtree,
+	}
+}
+
+type exportedIntf struct {
+	methods map[string]Method
+
+	// Whether or not this export is for the entire subtree
+	includeSubtree bool
+}
+
+func (obj *exportedIntf) LookupMethod(name string) (Method, bool) {
+	out, exists := obj.methods[name]
+	return out, exists
+}
+
+func (obj *exportedIntf) isFallbackInterface() bool {
+	return obj.includeSubtree
+}
+
+func newDefaultSignalHandler() *defaultSignalHandler {
+	return &defaultSignalHandler{}
+}
+
+func isDefaultSignalHandler(handler SignalHandler) bool {
+	_, ok := handler.(*defaultSignalHandler)
+	return ok
+}
+
+type defaultSignalHandler struct {
+	sync.RWMutex
+	closed  bool
+	signals []chan<- *Signal
+}
+
+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
+	}
+}
+
+func (sh *defaultSignalHandler) Init() error {
+	sh.Lock()
+	sh.signals = make([]chan<- *Signal, 0)
+	sh.Unlock()
+	return nil
+}
+
+func (sh *defaultSignalHandler) Terminate() {
+	sh.Lock()
+	sh.closed = true
+	for _, ch := range sh.signals {
+		close(ch)
+	}
+	sh.signals = nil
+	sh.Unlock()
+}
+
+func (sh *defaultSignalHandler) addSignal(ch chan<- *Signal) {
+	sh.Lock()
+	defer sh.Unlock()
+	if sh.closed {
+		return
+	}
+	sh.signals = append(sh.signals, ch)
+
+}
+
+func (sh *defaultSignalHandler) removeSignal(ch chan<- *Signal) {
+	sh.Lock()
+	defer sh.Unlock()
+	if sh.closed {
+		return
+	}
+	for i := len(sh.signals) - 1; i >= 0; i-- {
+		if ch == sh.signals[i] {
+			copy(sh.signals[i:], sh.signals[i+1:])
+			sh.signals[len(sh.signals)-1] = nil
+			sh.signals = sh.signals[:len(sh.signals)-1]
+		}
+	}
+}

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

@@ -202,6 +202,8 @@ func (enc *encoder) encode(v reflect.Value, depth int) {
 			panic(err)
 		}
 		enc.pos += length
+	case reflect.Interface:
+		enc.encode(reflect.ValueOf(MakeVariant(v.Interface())), depth)
 	default:
 		panic(InvalidTypeError{v.Type()})
 	}

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

@@ -8,167 +8,73 @@ import (
 )
 
 var (
-	errmsgInvalidArg = Error{
+	ErrMsgInvalidArg = Error{
 		"org.freedesktop.DBus.Error.InvalidArgs",
 		[]interface{}{"Invalid type / number of args"},
 	}
-	errmsgNoObject = Error{
+	ErrMsgNoObject = Error{
 		"org.freedesktop.DBus.Error.NoSuchObject",
 		[]interface{}{"No such object"},
 	}
-	errmsgUnknownMethod = Error{
+	ErrMsgUnknownMethod = Error{
 		"org.freedesktop.DBus.Error.UnknownMethod",
 		[]interface{}{"Unknown / invalid method"},
 	}
+	ErrMsgUnknownInterface = Error{
+		"org.freedesktop.DBus.Error.UnknownInterface",
+		[]interface{}{"Object does not implement the interface"},
+	}
 )
 
-// exportWithMapping represents an exported struct along with a method name
-// mapping to allow for exporting lower-case methods, etc.
-type exportWithMapping struct {
-	export interface{}
-
-	// Method name mapping; key -> struct method, value -> dbus method.
-	mapping map[string]string
-
-	// Whether or not this export is for the entire subtree
-	includeSubtree bool
+func MakeFailedError(err error) *Error {
+	return &Error{
+		"org.freedesktop.DBus.Error.Failed",
+		[]interface{}{err.Error()},
+	}
 }
 
 // Sender is a type which can be used in exported methods to receive the message
 // sender.
 type Sender string
 
-func exportedMethod(export exportWithMapping, name string) reflect.Value {
-	if export.export == nil {
-		return reflect.Value{}
+func computeMethodName(name string, mapping map[string]string) string {
+	newname, ok := mapping[name]
+	if ok {
+		name = newname
+	}
+	return name
 }
 
-	// If a mapping was included in the export, check the map to see if we
-	// should be looking for a different method in the export.
-	if export.mapping != nil {
-		for key, value := range export.mapping {
-			if value == name {
-				name = key
-				break
+func getMethods(in interface{}, mapping map[string]string) map[string]reflect.Value {
+	if in == nil {
+		return nil
 	}
-
-			// Catch the case where a method is aliased but the client is calling
-			// the original, e.g. the "Foo" method was exported mapped to
-			// "foo," and dbus client called the original "Foo."
-			if key == name {
-				return reflect.Value{}
-			}
-		}
-	}
-
-	value := reflect.ValueOf(export.export)
-	m := value.MethodByName(name)
-
-	// Catch the case of attempting to call an unexported method
-	method, ok := value.Type().MethodByName(name)
-
-	if !m.IsValid() || !ok || method.PkgPath != "" {
-		return reflect.Value{}
-	}
-	t := m.Type()
+	methods := make(map[string]reflect.Value)
+	val := reflect.ValueOf(in)
+	typ := val.Type()
+	for i := 0; i < typ.NumMethod(); i++ {
+		methtype := typ.Method(i)
+		method := val.Method(i)
+		t := method.Type()
+		// only track valid methods must return *Error as last arg
+		// and must be exported
 		if t.NumOut() == 0 ||
-		t.Out(t.NumOut()-1) != reflect.TypeOf(&errmsgInvalidArg) {
-
-		return reflect.Value{}
+			t.Out(t.NumOut()-1) != reflect.TypeOf(&ErrMsgInvalidArg) ||
+			methtype.PkgPath != "" {
+			continue
 		}
-	return m
+		// map names while building table
+		methods[computeMethodName(methtype.Name, mapping)] = method
+	}
+	return methods
 }
 
-// searchHandlers will look through all registered handlers looking for one
-// to handle the given path. If a verbatim one isn't found, it will check for
-// a subtree registration for the path as well.
-func (conn *Conn) searchHandlers(path ObjectPath) (map[string]exportWithMapping, bool) {
-	conn.handlersLck.RLock()
-	defer conn.handlersLck.RUnlock()
+func standardMethodArgumentDecode(m Method, sender string, msg *Message, body []interface{}) ([]interface{}, error) {
+	pointers := make([]interface{}, m.NumArguments())
+	decode := make([]interface{}, 0, len(body))
 
-	handlers, ok := conn.handlers[path]
-	if ok {
-		return handlers, ok
-	}
-
-	// If handlers weren't found for this exact path, look for a matching subtree
-	// registration
-	handlers = make(map[string]exportWithMapping)
-	path = path[:strings.LastIndex(string(path), "/")]
-	for len(path) > 0 {
-		var subtreeHandlers map[string]exportWithMapping
-		subtreeHandlers, ok = conn.handlers[path]
-		if ok {
-			for iface, handler := range subtreeHandlers {
-				// Only include this handler if it registered for the subtree
-				if handler.includeSubtree {
-					handlers[iface] = handler
-				}
-			}
-
-			break
-		}
-
-		path = path[:strings.LastIndex(string(path), "/")]
-	}
-
-	return handlers, ok
-}
-
-// handleCall handles the given method call (i.e. looks if it's one of the
-// pre-implemented ones and searches for a corresponding handler if not).
-func (conn *Conn) handleCall(msg *Message) {
-	name := msg.Headers[FieldMember].value.(string)
-	path := msg.Headers[FieldPath].value.(ObjectPath)
-	ifaceName, hasIface := msg.Headers[FieldInterface].value.(string)
-	sender, hasSender := msg.Headers[FieldSender].value.(string)
-	serial := msg.serial
-	if ifaceName == "org.freedesktop.DBus.Peer" {
-		switch name {
-		case "Ping":
-			conn.sendReply(sender, serial)
-		case "GetMachineId":
-			conn.sendReply(sender, serial, conn.uuid)
-		default:
-			conn.sendError(errmsgUnknownMethod, sender, serial)
-		}
-		return
-	}
-	if len(name) == 0 {
-		conn.sendError(errmsgUnknownMethod, sender, serial)
-	}
-
-	// Find the exported handler (if any) for this path
-	handlers, ok := conn.searchHandlers(path)
-	if !ok {
-		conn.sendError(errmsgNoObject, sender, serial)
-		return
-	}
-
-	var m reflect.Value
-	if hasIface {
-		iface := handlers[ifaceName]
-		m = exportedMethod(iface, name)
-	} else {
-		for _, v := range handlers {
-			m = exportedMethod(v, name)
-			if m.IsValid() {
-				break
-			}
-		}
-	}
-
-	if !m.IsValid() {
-		conn.sendError(errmsgUnknownMethod, sender, serial)
-		return
-	}
-
-	t := m.Type()
-	vs := msg.Body
-	pointers := make([]interface{}, t.NumIn())
-	decode := make([]interface{}, 0, len(vs))
-	for i := 0; i < t.NumIn(); i++ {
-		tp := t.In(i)
+	for i := 0; i < m.NumArguments(); i++ {
+		tp := reflect.TypeOf(m.ArgumentValue(i))
 		val := reflect.New(tp)
 		pointers[i] = val.Interface()
 		if tp == reflect.TypeOf((*Sender)(nil)).Elem() {
@@ -180,26 +86,73 @@ func (conn *Conn) handleCall(msg *Message) {
 		}
 	}
 
-	if len(decode) != len(vs) {
-		conn.sendError(errmsgInvalidArg, sender, serial)
+	if len(decode) != len(body) {
+		return nil, ErrMsgInvalidArg
+	}
+
+	if err := Store(body, decode...); err != nil {
+		return nil, ErrMsgInvalidArg
+	}
+
+	return pointers, nil
+}
+
+func (conn *Conn) decodeArguments(m Method, sender string, msg *Message) ([]interface{}, error) {
+	if decoder, ok := m.(ArgumentDecoder); ok {
+		return decoder.DecodeArguments(conn, sender, msg, msg.Body)
+	}
+	return standardMethodArgumentDecode(m, sender, msg, msg.Body)
+}
+
+// handleCall handles the given method call (i.e. looks if it's one of the
+// pre-implemented ones and searches for a corresponding handler if not).
+func (conn *Conn) handleCall(msg *Message) {
+	name := msg.Headers[FieldMember].value.(string)
+	path := msg.Headers[FieldPath].value.(ObjectPath)
+	ifaceName, _ := msg.Headers[FieldInterface].value.(string)
+	sender, hasSender := msg.Headers[FieldSender].value.(string)
+	serial := msg.serial
+	if ifaceName == "org.freedesktop.DBus.Peer" {
+		switch name {
+		case "Ping":
+			conn.sendReply(sender, serial)
+		case "GetMachineId":
+			conn.sendReply(sender, serial, conn.uuid)
+		default:
+			conn.sendError(ErrMsgUnknownMethod, sender, serial)
+		}
+		return
+	}
+	if len(name) == 0 {
+		conn.sendError(ErrMsgUnknownMethod, sender, serial)
+	}
+
+	object, ok := conn.handler.LookupObject(path)
+	if !ok {
+		conn.sendError(ErrMsgNoObject, sender, serial)
 		return
 	}
 
-	if err := Store(vs, decode...); err != nil {
-		conn.sendError(errmsgInvalidArg, sender, serial)
+	iface, exists := object.LookupInterface(ifaceName)
+	if !exists {
+		conn.sendError(ErrMsgUnknownInterface, sender, serial)
 		return
 	}
 
-	// Extract parameters
-	params := make([]reflect.Value, len(pointers))
-	for i := 0; i < len(pointers); i++ {
-		params[i] = reflect.ValueOf(pointers[i]).Elem()
+	m, exists := iface.LookupMethod(name)
+	if !exists {
+		conn.sendError(ErrMsgUnknownMethod, sender, serial)
+		return
+	}
+	args, err := conn.decodeArguments(m, sender, msg)
+	if err != nil {
+		conn.sendError(err, sender, serial)
+		return
 	}
 
-	// Call method
-	ret := m.Call(params)
-	if em := ret[t.NumOut()-1].Interface().(*Error); em != nil {
-		conn.sendError(*em, sender, serial)
+	ret, err := m.Call(args...)
+	if err != nil {
+		conn.sendError(err, sender, serial)
 		return
 	}
 
@@ -212,13 +165,11 @@ func (conn *Conn) handleCall(msg *Message) {
 			reply.Headers[FieldDestination] = msg.Headers[FieldSender]
 		}
 		reply.Headers[FieldReplySerial] = MakeVariant(msg.serial)
-		reply.Body = make([]interface{}, len(ret)-1)
-		for i := 0; i < len(ret)-1; i++ {
-			reply.Body[i] = ret[i].Interface()
+		reply.Body = make([]interface{}, len(ret))
+		for i := 0; i < len(ret); i++ {
+			reply.Body[i] = ret[i]
 		}
-		if len(ret) != 1 {
 		reply.Headers[FieldSignature] = MakeVariant(SignatureOf(reply.Body...))
-		}
 		conn.outLck.RLock()
 		if !conn.closed {
 			conn.out <- reply
@@ -303,7 +254,7 @@ func (conn *Conn) Export(v interface{}, path ObjectPath, iface string) error {
 // The keys in the map are the real method names (exported on the struct), and
 // the values are the method names to be exported on DBus.
 func (conn *Conn) ExportWithMap(v interface{}, mapping map[string]string, path ObjectPath, iface string) error {
-	return conn.exportWithMap(v, mapping, path, iface, false)
+	return conn.export(getMethods(v, mapping), path, iface, false)
 }
 
 // ExportSubtree works exactly like Export but registers the given value for
@@ -326,38 +277,89 @@ func (conn *Conn) ExportSubtree(v interface{}, path ObjectPath, iface string) er
 // The keys in the map are the real method names (exported on the struct), and
 // the values are the method names to be exported on DBus.
 func (conn *Conn) ExportSubtreeWithMap(v interface{}, mapping map[string]string, path ObjectPath, iface string) error {
-	return conn.exportWithMap(v, mapping, path, iface, true)
+	return conn.export(getMethods(v, mapping), path, iface, true)
+}
+
+// ExportMethodTable like Export registers the given methods as an object
+// on the message bus. Unlike Export the it uses a method table to define
+// the object instead of a native go object.
+//
+// The method table is a map from method name to function closure
+// representing the method. This allows an object exported on the bus to not
+// necessarily be a native go object. It can be useful for generating exposed
+// methods on the fly.
+//
+// Any non-function objects in the method table are ignored.
+func (conn *Conn) ExportMethodTable(methods map[string]interface{}, path ObjectPath, iface string) error {
+	return conn.exportMethodTable(methods, path, iface, false)
+}
+
+// Like ExportSubtree, but with the same caveats as ExportMethodTable.
+func (conn *Conn) ExportSubtreeMethodTable(methods map[string]interface{}, path ObjectPath, iface string) error {
+	return conn.exportMethodTable(methods, path, iface, true)
+}
+
+func (conn *Conn) exportMethodTable(methods map[string]interface{}, path ObjectPath, iface string, includeSubtree bool) error {
+	out := make(map[string]reflect.Value)
+	for name, method := range methods {
+		rval := reflect.ValueOf(method)
+		if rval.Kind() != reflect.Func {
+			continue
+		}
+		t := rval.Type()
+		// only track valid methods must return *Error as last arg
+		if t.NumOut() == 0 ||
+			t.Out(t.NumOut()-1) != reflect.TypeOf(&ErrMsgInvalidArg) {
+			continue
+		}
+		out[name] = rval
+	}
+	return conn.export(out, path, iface, includeSubtree)
+}
+
+func (conn *Conn) unexport(h *defaultHandler, path ObjectPath, iface string) error {
+	if h.PathExists(path) {
+		obj := h.objects[path]
+		obj.DeleteInterface(iface)
+		if len(obj.interfaces) == 0 {
+			h.DeleteObject(path)
+		}
+	}
+	return nil
 }
 
 // exportWithMap is the worker function for all exports/registrations.
-func (conn *Conn) exportWithMap(v interface{}, mapping map[string]string, path ObjectPath, iface string, includeSubtree bool) error {
+func (conn *Conn) export(methods map[string]reflect.Value, path ObjectPath, iface string, includeSubtree bool) error {
+	h, ok := conn.handler.(*defaultHandler)
+	if !ok {
+		return fmt.Errorf(
+			`dbus: export only allowed on the default hander handler have %T"`,
+			conn.handler)
+	}
+
 	if !path.IsValid() {
 		return fmt.Errorf(`dbus: Invalid path name: "%s"`, path)
 	}
 
-	conn.handlersLck.Lock()
-	defer conn.handlersLck.Unlock()
-
 	// Remove a previous export if the interface is nil
-	if v == nil {
-		if _, ok := conn.handlers[path]; ok {
-			delete(conn.handlers[path], iface)
-			if len(conn.handlers[path]) == 0 {
-				delete(conn.handlers, path)
-			}
-		}
-
-		return nil
+	if methods == nil {
+		return conn.unexport(h, path, iface)
 	}
 
 	// If this is the first handler for this path, make a new map to hold all
 	// handlers for this path.
-	if _, ok := conn.handlers[path]; !ok {
-		conn.handlers[path] = make(map[string]exportWithMapping)
+	if !h.PathExists(path) {
+		h.AddObject(path, newExportedObject())
+	}
+
+	exportedMethods := make(map[string]Method)
+	for name, method := range methods {
+		exportedMethods[name] = exportedMethod{method}
 	}
 
 	// Finally, save this handler
-	conn.handlers[path][iface] = exportWithMapping{export: v, mapping: mapping, includeSubtree: includeSubtree}
+	obj := h.objects[path]
+	obj.AddInterface(iface, newExportedIntf(exportedMethods, includeSubtree))
 
 	return nil
 }

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

@@ -22,6 +22,13 @@ const (
 	// FlagNoAutoStart signals that the message bus should not automatically
 	// start an application when handling this message.
 	FlagNoAutoStart
+	// FlagAllowInteractiveAuthorization may be set on a method call
+	// message to inform the receiving side that the caller is prepared
+	// to wait for interactive authorization, which might take a
+	// considerable time to complete. For instance, if this flag is set,
+	// it would be appropriate to query the user for passwords or
+	// confirmation via Polkit or a similar framework.
+	FlagAllowInteractiveAuthorization
 )
 
 // Type represents the possible types of a D-Bus message.
@@ -248,7 +255,7 @@ func (msg *Message) EncodeTo(out io.Writer, order binary.ByteOrder) error {
 // IsValid checks whether msg is a valid message and returns an
 // InvalidMessageError if it is not.
 func (msg *Message) IsValid() error {
-	if msg.Flags & ^(FlagNoAutoStart|FlagNoReplyExpected) != 0 {
+	if msg.Flags & ^(FlagNoAutoStart|FlagNoReplyExpected|FlagAllowInteractiveAuthorization) != 0 {
 		return InvalidMessageError("invalid flags")
 	}
 	if msg.Type == 0 || msg.Type >= typeMax {

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

@@ -0,0 +1,89 @@
+package dbus
+
+// Terminator allows a handler to implement a shutdown mechanism that
+// is called when the connection terminates.
+type Terminator interface {
+	Terminate()
+}
+
+// Handler is the representation of a D-Bus Application.
+//
+// The Handler must have a way to lookup objects given
+// an ObjectPath. The returned object must implement the
+// ServerObject interface.
+type Handler interface {
+	LookupObject(path ObjectPath) (ServerObject, bool)
+}
+
+// ServerObject is the representation of an D-Bus Object.
+//
+// Objects are registered at a path for a given Handler.
+// The Objects implement D-Bus interfaces. The semantics
+// of Interface lookup is up to the implementation of
+// the ServerObject. The ServerObject implementation may
+// choose to implement empty string as a valid interface
+// represeting all methods or not per the D-Bus specification.
+type ServerObject interface {
+	LookupInterface(name string) (Interface, bool)
+}
+
+// An Interface is the representation of a D-Bus Interface.
+//
+// Interfaces are a grouping of methods implemented by the Objects.
+// Interfaces are responsible for routing method calls.
+type Interface interface {
+	LookupMethod(name string) (Method, bool)
+}
+
+// A Method represents the exposed methods on D-Bus.
+type Method interface {
+	// Call requires that all arguments are decoded before being passed to it.
+	Call(args ...interface{}) ([]interface{}, error)
+	NumArguments() int
+	NumReturns() int
+	// ArgumentValue returns a representative value for the argument at position
+	// it should be of the proper type. reflect.Zero would be a good mechanism
+	// to use for this Value.
+	ArgumentValue(position int) interface{}
+	// ReturnValue returns a representative value for the return at position
+	// it should be of the proper type. reflect.Zero would be a good mechanism
+	// to use for this Value.
+	ReturnValue(position int) interface{}
+}
+
+// An Argument Decoder can decode arguments using the non-standard mechanism
+//
+// If a method implements this interface then the non-standard
+// decoder will be used.
+//
+// Method arguments must be decoded from the message.
+// The mechanism for doing this will vary based on the
+// implementation of the method. A normal approach is provided
+// as part of this library, but may be replaced with
+// any other decoding scheme.
+type ArgumentDecoder interface {
+	// To decode the arguments of a method the sender and message are
+	// provided incase the semantics of the implementer provides access
+	// to these as part of the method invocation.
+	DecodeArguments(conn *Conn, sender string, msg *Message, args []interface{}) ([]interface{}, error)
+}
+
+// A SignalHandler is responsible for delivering a signal.
+//
+// Signal delivery may be changed from the default channel
+// based approach by Handlers implementing the SignalHandler
+// interface.
+type SignalHandler interface {
+	DeliverSignal(iface, name string, signal *Signal)
+}
+
+// A DBusError is used to convert a generic object to a D-Bus error.
+//
+// Any custom error mechanism may implement this interface to provide
+// a custom encoding of the error on D-Bus. By default if a normal
+// error is returned, it will be encoded as the generic
+// "org.freedesktop.DBus.Error.Failed" error. By implementing this
+// interface as well a custom encoding may be provided.
+type DBusError interface {
+	DBusError() (string, []interface{})
+}

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

@@ -101,6 +101,8 @@ func getSignature(t reflect.Type) string {
 			panic(InvalidTypeError{t})
 		}
 		return "a{" + getSignature(t.Key()) + getSignature(t.Elem()) + "}"
+	case reflect.Interface:
+		return "v"
 	}
 	panic(InvalidTypeError{t})
 }
@@ -162,7 +164,7 @@ func (e SignatureError) Error() string {
 	return fmt.Sprintf("dbus: invalid signature: %q (%s)", e.Sig, e.Reason)
 }
 
-// Try to read a single type from this string. If it was successfull, err is nil
+// Try to read a single type from this string. If it was successful, err is nil
 // and rem is the remaining unparsed part. Otherwise, err is a non-nil
 // SignatureError and rem is "". depth is the current recursion depth which may
 // not be greater than 64 and should be given as 0 on the first call.

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

@@ -0,0 +1,43 @@
+//+build !windows
+
+package dbus
+
+import (
+	"errors"
+	"net"
+)
+
+func init() {
+	transports["tcp"] = newTcpTransport
+}
+
+func tcpFamily(keys string) (string, error) {
+	switch getKey(keys, "family") {
+	case "":
+		return "tcp", nil
+	case "ipv4":
+		return "tcp4", nil
+	case "ipv6":
+		return "tcp6", nil
+	default:
+		return "", errors.New("dbus: invalid tcp family (must be ipv4 or ipv6)")
+	}
+}
+
+func newTcpTransport(keys string) (transport, error) {
+	host := getKey(keys, "host")
+	port := getKey(keys, "port")
+	if host == "" || port == "" {
+		return nil, errors.New("dbus: unsupported address (must set host and port)")
+	}
+
+	protocol, err := tcpFamily(keys)
+	if err != nil {
+		return nil, err
+	}
+	socket, err := net.Dial(protocol, net.JoinHostPort(host, port))
+	if err != nil {
+		return nil, err
+	}
+	return NewConn(socket)
+}

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

@@ -1,4 +1,4 @@
-//+build !windows
+//+build !windows,!solaris
 
 package dbus
 

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

@@ -0,0 +1,14 @@
+package dbus
+
+import "io"
+
+func (t *unixTransport) SendNullByte() error {
+	n, _, err := t.UnixConn.WriteMsgUnix([]byte{0}, nil, nil)
+	if err != nil {
+		return err
+	}
+	if n != 1 {
+		return io.ErrShortWrite
+	}
+	return nil
+}

vendor/github.com/golang/protobuf/proto/Makefile

@@ -39,5 +39,5 @@ test: install generate-test-pbs
 generate-test-pbs:
 	make install
 	make -C testdata
-	protoc --go_out=Mtestdata/test.proto=github.com/golang/protobuf/proto/testdata:. proto3_proto/proto3.proto
+	protoc --go_out=Mtestdata/test.proto=github.com/golang/protobuf/proto/testdata,Mgoogle/protobuf/any.proto=github.com/golang/protobuf/ptypes/any:. proto3_proto/proto3.proto
 	make

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

@@ -84,9 +84,15 @@ func mergeStruct(out, in reflect.Value) {
 		mergeAny(out.Field(i), in.Field(i), false, sprop.Prop[i])
 	}
 
-	if emIn, ok := in.Addr().Interface().(extendableProto); ok {
-		emOut := out.Addr().Interface().(extendableProto)
-		mergeExtension(emOut.ExtensionMap(), emIn.ExtensionMap())
+	if emIn, ok := extendable(in.Addr().Interface()); ok {
+		emOut, _ := extendable(out.Addr().Interface())
+		mIn, muIn := emIn.extensionsRead()
+		if mIn != nil {
+			mOut := emOut.extensionsWrite()
+			muIn.Lock()
+			mergeExtension(mOut, mIn)
+			muIn.Unlock()
+		}
 	}
 
 	uf := in.FieldByName("XXX_unrecognized")

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

@@ -61,7 +61,6 @@ var ErrInternalBadWireType = errors.New("proto: internal error: bad wiretype for
 // int32, int64, uint32, uint64, bool, and enum
 // protocol buffer types.
 func DecodeVarint(buf []byte) (x uint64, n int) {
-	// x, n already 0
 	for shift := uint(0); shift < 64; shift += 7 {
 		if n >= len(buf) {
 			return 0, 0
@@ -78,13 +77,7 @@ func DecodeVarint(buf []byte) (x uint64, n int) {
 	return 0, 0
 }
 
-// DecodeVarint reads a varint-encoded integer from the Buffer.
-// This is the format for the
-// int32, int64, uint32, uint64, bool, and enum
-// protocol buffer types.
-func (p *Buffer) DecodeVarint() (x uint64, err error) {
-	// x, err already 0
-
+func (p *Buffer) decodeVarintSlow() (x uint64, err error) {
 	i := p.index
 	l := len(p.buf)
 
@@ -107,6 +100,107 @@ func (p *Buffer) DecodeVarint() (x uint64, err error) {
 	return
 }
 
+// DecodeVarint reads a varint-encoded integer from the Buffer.
+// This is the format for the
+// int32, int64, uint32, uint64, bool, and enum
+// protocol buffer types.
+func (p *Buffer) DecodeVarint() (x uint64, err error) {
+	i := p.index
+	buf := p.buf
+
+	if i >= len(buf) {
+		return 0, io.ErrUnexpectedEOF
+	} else if buf[i] < 0x80 {
+		p.index++
+		return uint64(buf[i]), nil
+	} else if len(buf)-i < 10 {
+		return p.decodeVarintSlow()
+	}
+
+	var b uint64
+	// we already checked the first byte
+	x = uint64(buf[i]) - 0x80
+	i++
+
+	b = uint64(buf[i])
+	i++
+	x += b << 7
+	if b&0x80 == 0 {
+		goto done
+	}
+	x -= 0x80 << 7
+
+	b = uint64(buf[i])
+	i++
+	x += b << 14
+	if b&0x80 == 0 {
+		goto done
+	}
+	x -= 0x80 << 14
+
+	b = uint64(buf[i])
+	i++
+	x += b << 21
+	if b&0x80 == 0 {
+		goto done
+	}
+	x -= 0x80 << 21
+
+	b = uint64(buf[i])
+	i++
+	x += b << 28
+	if b&0x80 == 0 {
+		goto done
+	}
+	x -= 0x80 << 28
+
+	b = uint64(buf[i])
+	i++
+	x += b << 35
+	if b&0x80 == 0 {
+		goto done
+	}
+	x -= 0x80 << 35
+
+	b = uint64(buf[i])
+	i++
+	x += b << 42
+	if b&0x80 == 0 {
+		goto done
+	}
+	x -= 0x80 << 42
+
+	b = uint64(buf[i])
+	i++
+	x += b << 49
+	if b&0x80 == 0 {
+		goto done
+	}
+	x -= 0x80 << 49
+
+	b = uint64(buf[i])
+	i++
+	x += b << 56
+	if b&0x80 == 0 {
+		goto done
+	}
+	x -= 0x80 << 56
+
+	b = uint64(buf[i])
+	i++
+	x += b << 63
+	if b&0x80 == 0 {
+		goto done
+	}
+	// x -= 0x80 << 63 // Always zero.
+
+	return 0, errOverflow
+
+done:
+	p.index = i
+	return x, nil
+}
+
 // DecodeFixed64 reads a 64-bit integer from the Buffer.
 // This is the format for the
 // fixed64, sfixed64, and double protocol buffer types.
@@ -340,6 +434,8 @@ func (p *Buffer) DecodeGroup(pb Message) error {
 // Buffer and places the decoded result in pb.  If the struct
 // underlying pb does not match the data in the buffer, the results can be
 // unpredictable.
+//
+// Unlike proto.Unmarshal, this does not reset pb before starting to unmarshal.
 func (p *Buffer) Unmarshal(pb Message) error {
 	// If the object can unmarshal itself, let it.
 	if u, ok := pb.(Unmarshaler); ok {
@@ -378,6 +474,11 @@ func (o *Buffer) unmarshalType(st reflect.Type, prop *StructProperties, is_group
 		wire := int(u & 0x7)
 		if wire == WireEndGroup {
 			if is_group {
+				if required > 0 {
+					// Not enough information to determine the exact field.
+					// (See below.)
+					return &RequiredNotSetError{"{Unknown}"}
+				}
 				return nil // input is satisfied
 			}
 			return fmt.Errorf("proto: %s: wiretype end group for non-group", st)
@@ -390,11 +491,12 @@ func (o *Buffer) unmarshalType(st reflect.Type, prop *StructProperties, is_group
 		if !ok {
 			// Maybe it's an extension?
 			if prop.extendable {
-				if e := structPointer_Interface(base, st).(extendableProto); isExtensionField(e, int32(tag)) {
+				if e, _ := extendable(structPointer_Interface(base, st)); isExtensionField(e, int32(tag)) {
 					if err = o.skip(st, tag, wire); err == nil {
-						ext := e.ExtensionMap()[int32(tag)] // may be missing
+						extmap := e.extensionsWrite()
+						ext := extmap[int32(tag)] // may be missing
 						ext.enc = append(ext.enc, o.buf[oi:o.index]...)
-						e.ExtensionMap()[int32(tag)] = ext
+						extmap[int32(tag)] = ext
 					}
 					continue
 				}
@@ -768,10 +870,11 @@ func (o *Buffer) dec_new_map(p *Properties, base structPointer) error {
 		}
 	}
 	keyelem, valelem := keyptr.Elem(), valptr.Elem()
-	if !keyelem.IsValid() || !valelem.IsValid() {
-		// We did not decode the key or the value in the map entry.
-		// Either way, it's an invalid map entry.
-		return fmt.Errorf("proto: bad map data: missing key/val")
+	if !keyelem.IsValid() {
+		keyelem = reflect.Zero(p.mtype.Key())
+	}
+	if !valelem.IsValid() {
+		valelem = reflect.Zero(p.mtype.Elem())
 	}
 
 	v.SetMapIndex(keyelem, valelem)

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

@@ -64,8 +64,16 @@ var (
 	// a struct with a repeated field containing a nil element.
 	errRepeatedHasNil = errors.New("proto: repeated field has nil element")
 
+	// errOneofHasNil is the error returned if Marshal is called with
+	// a struct with a oneof field containing a nil element.
+	errOneofHasNil = errors.New("proto: oneof field has nil value")
+
 	// ErrNil is the error returned if Marshal is called with nil.
 	ErrNil = errors.New("proto: Marshal called with nil")
+
+	// ErrTooLarge is the error returned if Marshal is called with a
+	// message that encodes to >2GB.
+	ErrTooLarge = errors.New("proto: message encodes to over 2 GB")
 )
 
 // The fundamental encoders that put bytes on the wire.
@@ -74,6 +82,10 @@ var (
 
 const maxVarintBytes = 10 // maximum length of a varint
 
+// maxMarshalSize is the largest allowed size of an encoded protobuf,
+// since C++ and Java use signed int32s for the size.
+const maxMarshalSize = 1<<31 - 1
+
 // EncodeVarint returns the varint encoding of x.
 // This is the format for the
 // int32, int64, uint32, uint64, bool, and enum
@@ -222,10 +234,6 @@ func Marshal(pb Message) ([]byte, error) {
 	}
 	p := NewBuffer(nil)
 	err := p.Marshal(pb)
-	var state errorState
-	if err != nil && !state.shouldContinue(err, nil) {
-		return nil, err
-	}
 	if p.buf == nil && err == nil {
 		// Return a non-nil slice on success.
 		return []byte{}, nil
@@ -254,11 +262,8 @@ func (p *Buffer) Marshal(pb Message) error {
 	// Can the object marshal itself?
 	if m, ok := pb.(Marshaler); ok {
 		data, err := m.Marshal()
-		if err != nil {
-			return err
-		}
 		p.buf = append(p.buf, data...)
-		return nil
+		return err
 	}
 
 	t, base, err := getbase(pb)
@@ -270,9 +275,12 @@ func (p *Buffer) Marshal(pb Message) error {
 	}
 
 	if collectStats {
-		stats.Encode++
+		(stats).Encode++ // Parens are to work around a goimports bug.
 	}
 
+	if len(p.buf) > maxMarshalSize {
+		return ErrTooLarge
+	}
 	return err
 }
 
@@ -294,7 +302,7 @@ func Size(pb Message) (n int) {
 	}
 
 	if collectStats {
-		stats.Size++
+		(stats).Size++ // Parens are to work around a goimports bug.
 	}
 
 	return
@@ -999,7 +1007,6 @@ func size_slice_struct_message(p *Properties, base structPointer) (n int) {
 		if p.isMarshaler {
 			m := structPointer_Interface(structp, p.stype).(Marshaler)
 			data, _ := m.Marshal()
-			n += len(p.tagcode)
 			n += sizeRawBytes(data)
 			continue
 		}
@@ -1058,10 +1065,32 @@ func size_slice_struct_group(p *Properties, base structPointer) (n int) {
 
 // Encode an extension map.
 func (o *Buffer) enc_map(p *Properties, base structPointer) error {
-	v := *structPointer_ExtMap(base, p.field)
-	if err := encodeExtensionMap(v); err != nil {
+	exts := structPointer_ExtMap(base, p.field)
+	if err := encodeExtensionsMap(*exts); err != nil {
 		return err
 	}
+
+	return o.enc_map_body(*exts)
+}
+
+func (o *Buffer) enc_exts(p *Properties, base structPointer) error {
+	exts := structPointer_Extensions(base, p.field)
+
+	v, mu := exts.extensionsRead()
+	if v == nil {
+		return nil
+	}
+
+	mu.Lock()
+	defer mu.Unlock()
+	if err := encodeExtensionsMap(v); err != nil {
+		return err
+	}
+
+	return o.enc_map_body(v)
+}
+
+func (o *Buffer) enc_map_body(v map[int32]Extension) error {
 	// Fast-path for common cases: zero or one extensions.
 	if len(v) <= 1 {
 		for _, e := range v {
@@ -1084,8 +1113,13 @@ func (o *Buffer) enc_map(p *Properties, base structPointer) error {
 }
 
 func size_map(p *Properties, base structPointer) int {
-	v := *structPointer_ExtMap(base, p.field)
-	return sizeExtensionMap(v)
+	v := structPointer_ExtMap(base, p.field)
+	return extensionsMapSize(*v)
+}
+
+func size_exts(p *Properties, base structPointer) int {
+	v := structPointer_Extensions(base, p.field)
+	return extensionsSize(v)
 }
 
 // Encode a map field.
@@ -1114,7 +1148,7 @@ func (o *Buffer) enc_new_map(p *Properties, base structPointer) error {
 		if err := p.mkeyprop.enc(o, p.mkeyprop, keybase); err != nil {
 			return err
 		}
-		if err := p.mvalprop.enc(o, p.mvalprop, valbase); err != nil {
+		if err := p.mvalprop.enc(o, p.mvalprop, valbase); err != nil && err != ErrNil {
 			return err
 		}
 		return nil
@@ -1124,11 +1158,6 @@ func (o *Buffer) enc_new_map(p *Properties, base structPointer) error {
 	for _, key := range v.MapKeys() {
 		val := v.MapIndex(key)
 
-		// The only illegal map entry values are nil message pointers.
-		if val.Kind() == reflect.Ptr && val.IsNil() {
-			return errors.New("proto: map has nil element")
-		}
-
 		keycopy.Set(key)
 		valcopy.Set(val)
 
@@ -1216,13 +1245,18 @@ func (o *Buffer) enc_struct(prop *StructProperties, base structPointer) error {
 					return err
 				}
 			}
+			if len(o.buf) > maxMarshalSize {
+				return ErrTooLarge
+			}
 		}
 	}
 
 	// Do oneof fields.
 	if prop.oneofMarshaler != nil {
 		m := structPointer_Interface(base, prop.stype).(Message)
-		if err := prop.oneofMarshaler(m, o); err != nil {
+		if err := prop.oneofMarshaler(m, o); err == ErrNil {
+			return errOneofHasNil
+		} else if err != nil {
 			return err
 		}
 	}
@@ -1230,6 +1264,9 @@ func (o *Buffer) enc_struct(prop *StructProperties, base structPointer) error {
 	// Add unrecognized fields at the end.
 	if prop.unrecField.IsValid() {
 		v := *structPointer_Bytes(base, prop.unrecField)
+		if len(o.buf)+len(v) > maxMarshalSize {
+			return ErrTooLarge
+		}
 		if len(v) > 0 {
 			o.buf = append(o.buf, v...)
 		}

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

@@ -54,13 +54,17 @@ Equality is defined in this way:
     in a proto3 .proto file, fields are not "set"; specifically,
     zero length proto3 "bytes" fields are equal (nil == {}).
   - Two repeated fields are equal iff their lengths are the same,
-    and their corresponding elements are equal (a "bytes" field,
-    although represented by []byte, is not a repeated field)
+    and their corresponding elements are equal. Note a "bytes" field,
+    although represented by []byte, is not a repeated field and the
+    rule for the scalar fields described above applies.
   - Two unset fields are equal.
   - Two unknown field sets are equal if their current
     encoded state is equal.
   - Two extension sets are equal iff they have corresponding
     elements that are pairwise equal.
+  - Two map fields are equal iff their lengths are the same,
+    and they contain the same set of elements. Zero-length map
+    fields are equal.
   - Every other combination of things are not equal.
 
 The return value is undefined if a and b are not protocol buffers.
@@ -121,9 +125,16 @@ func equalStruct(v1, v2 reflect.Value) bool {
 		}
 	}
 
+	if em1 := v1.FieldByName("XXX_InternalExtensions"); em1.IsValid() {
+		em2 := v2.FieldByName("XXX_InternalExtensions")
+		if !equalExtensions(v1.Type(), em1.Interface().(XXX_InternalExtensions), em2.Interface().(XXX_InternalExtensions)) {
+			return false
+		}
+	}
+
 	if em1 := v1.FieldByName("XXX_extensions"); em1.IsValid() {
 		em2 := v2.FieldByName("XXX_extensions")
-		if !equalExtensions(v1.Type(), em1.Interface().(map[int32]Extension), em2.Interface().(map[int32]Extension)) {
+		if !equalExtMap(v1.Type(), em1.Interface().(map[int32]Extension), em2.Interface().(map[int32]Extension)) {
 			return false
 		}
 	}
@@ -184,6 +195,13 @@ func equalAny(v1, v2 reflect.Value, prop *Properties) bool {
 		}
 		return true
 	case reflect.Ptr:
+		// Maps may have nil values in them, so check for nil.
+		if v1.IsNil() && v2.IsNil() {
+			return true
+		}
+		if v1.IsNil() != v2.IsNil() {
+			return false
+		}
 		return equalAny(v1.Elem(), v2.Elem(), prop)
 	case reflect.Slice:
 		if v1.Type().Elem().Kind() == reflect.Uint8 {
@@ -223,8 +241,14 @@ func equalAny(v1, v2 reflect.Value, prop *Properties) bool {
 }
 
 // base is the struct type that the extensions are based on.
-// em1 and em2 are extension maps.
-func equalExtensions(base reflect.Type, em1, em2 map[int32]Extension) bool {
+// x1 and x2 are InternalExtensions.
+func equalExtensions(base reflect.Type, x1, x2 XXX_InternalExtensions) bool {
+	em1, _ := x1.extensionsRead()
+	em2, _ := x2.extensionsRead()
+	return equalExtMap(base, em1, em2)
+}
+
+func equalExtMap(base reflect.Type, em1, em2 map[int32]Extension) bool {
 	if len(em1) != len(em2) {
 		return false
 	}

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

@@ -52,14 +52,99 @@ type ExtensionRange struct {
 	Start, End int32 // both inclusive
 }
 
-// extendableProto is an interface implemented by any protocol buffer that may be extended.
+// extendableProto is an interface implemented by any protocol buffer generated by the current
+// proto compiler that may be extended.
 type extendableProto interface {
+	Message
+	ExtensionRangeArray() []ExtensionRange
+	extensionsWrite() map[int32]Extension
+	extensionsRead() (map[int32]Extension, sync.Locker)
+}
+
+// extendableProtoV1 is an interface implemented by a protocol buffer generated by the previous
+// version of the proto compiler that may be extended.
+type extendableProtoV1 interface {
 	Message
 	ExtensionRangeArray() []ExtensionRange
 	ExtensionMap() map[int32]Extension
 }
 
+// extensionAdapter is a wrapper around extendableProtoV1 that implements extendableProto.
+type extensionAdapter struct {
+	extendableProtoV1
+}
+
+func (e extensionAdapter) extensionsWrite() map[int32]Extension {
+	return e.ExtensionMap()
+}
+
+func (e extensionAdapter) extensionsRead() (map[int32]Extension, sync.Locker) {
+	return e.ExtensionMap(), notLocker{}
+}
+
+// notLocker is a sync.Locker whose Lock and Unlock methods are nops.
+type notLocker struct{}
+
+func (n notLocker) Lock()   {}
+func (n notLocker) Unlock() {}
+
+// extendable returns the extendableProto interface for the given generated proto message.
+// If the proto message has the old extension format, it returns a wrapper that implements
+// the extendableProto interface.
+func extendable(p interface{}) (extendableProto, bool) {
+	if ep, ok := p.(extendableProto); ok {
+		return ep, ok
+	}
+	if ep, ok := p.(extendableProtoV1); ok {
+		return extensionAdapter{ep}, ok
+	}
+	return nil, false
+}
+
+// XXX_InternalExtensions is an internal representation of proto extensions.
+//
+// Each generated message struct type embeds an anonymous XXX_InternalExtensions field,
+// thus gaining the unexported 'extensions' method, which can be called only from the proto package.
+//
+// The methods of XXX_InternalExtensions are not concurrency safe in general,
+// but calls to logically read-only methods such as has and get may be executed concurrently.
+type XXX_InternalExtensions struct {
+	// The struct must be indirect so that if a user inadvertently copies a
+	// generated message and its embedded XXX_InternalExtensions, they
+	// avoid the mayhem of a copied mutex.
+	//
+	// The mutex serializes all logically read-only operations to p.extensionMap.
+	// It is up to the client to ensure that write operations to p.extensionMap are
+	// mutually exclusive with other accesses.
+	p *struct {
+		mu           sync.Mutex
+		extensionMap map[int32]Extension
+	}
+}
+
+// extensionsWrite returns the extension map, creating it on first use.
+func (e *XXX_InternalExtensions) extensionsWrite() map[int32]Extension {
+	if e.p == nil {
+		e.p = new(struct {
+			mu           sync.Mutex
+			extensionMap map[int32]Extension
+		})
+		e.p.extensionMap = make(map[int32]Extension)
+	}
+	return e.p.extensionMap
+}
+
+// extensionsRead returns the extensions map for read-only use.  It may be nil.
+// The caller must hold the returned mutex's lock when accessing Elements within the map.
+func (e *XXX_InternalExtensions) extensionsRead() (map[int32]Extension, sync.Locker) {
+	if e.p == nil {
+		return nil, nil
+	}
+	return e.p.extensionMap, &e.p.mu
+}
+
 var extendableProtoType = reflect.TypeOf((*extendableProto)(nil)).Elem()
+var extendableProtoV1Type = reflect.TypeOf((*extendableProtoV1)(nil)).Elem()
 
 // ExtensionDesc represents an extension specification.
 // Used in generated code from the protocol compiler.
@@ -69,6 +154,7 @@ type ExtensionDesc struct {
 	Field         int32       // field number
 	Name          string      // fully-qualified name of extension, for text formatting
 	Tag           string      // protobuf tag style
+	Filename      string      // name of the file in which the extension is defined
 }
 
 func (ed *ExtensionDesc) repeated() bool {
@@ -92,8 +178,13 @@ type Extension struct {
 }
 
 // SetRawExtension is for testing only.
-func SetRawExtension(base extendableProto, id int32, b []byte) {
-	base.ExtensionMap()[id] = Extension{enc: b}
+func SetRawExtension(base Message, id int32, b []byte) {
+	epb, ok := extendable(base)
+	if !ok {
+		return
+	}
+	extmap := epb.extensionsWrite()
+	extmap[id] = Extension{enc: b}
 }
 
 // isExtensionField returns true iff the given field number is in an extension range.
@@ -108,8 +199,12 @@ func isExtensionField(pb extendableProto, field int32) bool {
 
 // checkExtensionTypes checks that the given extension is valid for pb.
 func checkExtensionTypes(pb extendableProto, extension *ExtensionDesc) error {
+	var pbi interface{} = pb
 	// Check the extended type.
-	if a, b := reflect.TypeOf(pb), reflect.TypeOf(extension.ExtendedType); a != b {
+	if ea, ok := pbi.(extensionAdapter); ok {
+		pbi = ea.extendableProtoV1
+	}
+	if a, b := reflect.TypeOf(pbi), reflect.TypeOf(extension.ExtendedType); a != b {
 		return errors.New("proto: bad extended type; " + b.String() + " does not extend " + a.String())
 	}
 	// Check the range.
@@ -155,8 +250,19 @@ func extensionProperties(ed *ExtensionDesc) *Properties {
 	return prop
 }
 
-// encodeExtensionMap encodes any unmarshaled (unencoded) extensions in m.
-func encodeExtensionMap(m map[int32]Extension) error {
+// encode encodes any unmarshaled (unencoded) extensions in e.
+func encodeExtensions(e *XXX_InternalExtensions) error {
+	m, mu := e.extensionsRead()
+	if m == nil {
+		return nil // fast path
+	}
+	mu.Lock()
+	defer mu.Unlock()
+	return encodeExtensionsMap(m)
+}
+
+// encode encodes any unmarshaled (unencoded) extensions in e.
+func encodeExtensionsMap(m map[int32]Extension) error {
 	for k, e := range m {
 		if e.value == nil || e.desc == nil {
 			// Extension is only in its encoded form.
@@ -184,7 +290,17 @@ func encodeExtensionMap(m map[int32]Extension) error {
 	return nil
 }
 
-func sizeExtensionMap(m map[int32]Extension) (n int) {
+func extensionsSize(e *XXX_InternalExtensions) (n int) {
+	m, mu := e.extensionsRead()
+	if m == nil {
+		return 0
+	}
+	mu.Lock()
+	defer mu.Unlock()
+	return extensionsMapSize(m)
+}
+
+func extensionsMapSize(m map[int32]Extension) (n int) {
 	for _, e := range m {
 		if e.value == nil || e.desc == nil {
 			// Extension is only in its encoded form.
@@ -209,26 +325,51 @@ func sizeExtensionMap(m map[int32]Extension) (n int) {
 }
 
 // HasExtension returns whether the given extension is present in pb.
-func HasExtension(pb extendableProto, extension *ExtensionDesc) bool {
+func HasExtension(pb Message, extension *ExtensionDesc) bool {
 	// TODO: Check types, field numbers, etc.?
-	_, ok := pb.ExtensionMap()[extension.Field]
+	epb, ok := extendable(pb)
+	if !ok {
+		return false
+	}
+	extmap, mu := epb.extensionsRead()
+	if extmap == nil {
+		return false
+	}
+	mu.Lock()
+	_, ok = extmap[extension.Field]
+	mu.Unlock()
 	return ok
 }
 
 // ClearExtension removes the given extension from pb.
-func ClearExtension(pb extendableProto, extension *ExtensionDesc) {
+func ClearExtension(pb Message, extension *ExtensionDesc) {
+	epb, ok := extendable(pb)
+	if !ok {
+		return
+	}
 	// TODO: Check types, field numbers, etc.?
-	delete(pb.ExtensionMap(), extension.Field)
+	extmap := epb.extensionsWrite()
+	delete(extmap, extension.Field)
 }
 
 // GetExtension parses and returns the given extension of pb.
 // If the extension is not present and has no default value it returns ErrMissingExtension.
-func GetExtension(pb extendableProto, extension *ExtensionDesc) (interface{}, error) {
-	if err := checkExtensionTypes(pb, extension); err != nil {
+func GetExtension(pb Message, extension *ExtensionDesc) (interface{}, error) {
+	epb, ok := extendable(pb)
+	if !ok {
+		return nil, errors.New("proto: not an extendable proto")
+	}
+
+	if err := checkExtensionTypes(epb, extension); err != nil {
 		return nil, err
 	}
 
-	emap := pb.ExtensionMap()
+	emap, mu := epb.extensionsRead()
+	if emap == nil {
+		return defaultExtensionValue(extension)
+	}
+	mu.Lock()
+	defer mu.Unlock()
 	e, ok := emap[extension.Field]
 	if !ok {
 		// defaultExtensionValue returns the default value or
@@ -332,10 +473,9 @@ func decodeExtension(b []byte, extension *ExtensionDesc) (interface{}, error) {
 // GetExtensions returns a slice of the extensions present in pb that are also listed in es.
 // The returned slice has the same length as es; missing extensions will appear as nil elements.
 func GetExtensions(pb Message, es []*ExtensionDesc) (extensions []interface{}, err error) {
-	epb, ok := pb.(extendableProto)
+	epb, ok := extendable(pb)
 	if !ok {
-		err = errors.New("proto: not an extendable proto")
-		return
+		return nil, errors.New("proto: not an extendable proto")
 	}
 	extensions = make([]interface{}, len(es))
 	for i, e := range es {
@@ -350,9 +490,44 @@ func GetExtensions(pb Message, es []*ExtensionDesc) (extensions []interface{}, e
 	return
 }
 
+// ExtensionDescs returns a new slice containing pb's extension descriptors, in undefined order.
+// For non-registered extensions, ExtensionDescs returns an incomplete descriptor containing
+// just the Field field, which defines the extension's field number.
+func ExtensionDescs(pb Message) ([]*ExtensionDesc, error) {
+	epb, ok := extendable(pb)
+	if !ok {
+		return nil, fmt.Errorf("proto: %T is not an extendable proto.Message", pb)
+	}
+	registeredExtensions := RegisteredExtensions(pb)
+
+	emap, mu := epb.extensionsRead()
+	if emap == nil {
+		return nil, nil
+	}
+	mu.Lock()
+	defer mu.Unlock()
+	extensions := make([]*ExtensionDesc, 0, len(emap))
+	for extid, e := range emap {
+		desc := e.desc
+		if desc == nil {
+			desc = registeredExtensions[extid]
+			if desc == nil {
+				desc = &ExtensionDesc{Field: extid}
+			}
+		}
+
+		extensions = append(extensions, desc)
+	}
+	return extensions, nil
+}
+
 // SetExtension sets the specified extension of pb to the specified value.
-func SetExtension(pb extendableProto, extension *ExtensionDesc, value interface{}) error {
-	if err := checkExtensionTypes(pb, extension); err != nil {
+func SetExtension(pb Message, extension *ExtensionDesc, value interface{}) error {
+	epb, ok := extendable(pb)
+	if !ok {
+		return errors.New("proto: not an extendable proto")
+	}
+	if err := checkExtensionTypes(epb, extension); err != nil {
 		return err
 	}
 	typ := reflect.TypeOf(extension.ExtensionType)
@@ -368,10 +543,23 @@ func SetExtension(pb extendableProto, extension *ExtensionDesc, value interface{
 		return fmt.Errorf("proto: SetExtension called with nil value of type %T", value)
 	}
 
-	pb.ExtensionMap()[extension.Field] = Extension{desc: extension, value: value}
+	extmap := epb.extensionsWrite()
+	extmap[extension.Field] = Extension{desc: extension, value: value}
 	return nil
 }
 
+// ClearAllExtensions clears all extensions from pb.
+func ClearAllExtensions(pb Message) {
+	epb, ok := extendable(pb)
+	if !ok {
+		return
+	}
+	m := epb.extensionsWrite()
+	for k := range m {
+		delete(m, k)
+	}
+}
+
 // A global registry of extensions.
 // The generated code will register the generated descriptors by calling RegisterExtension.
 

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

@@ -235,6 +235,7 @@ To create and play with a Test object:
 		test := &pb.Test{
 			Label: proto.String("hello"),
 			Type:  proto.Int32(17),
+			Reps:  []int64{1, 2, 3},
 			Optionalgroup: &pb.Test_OptionalGroup{
 				RequiredField: proto.String("good bye"),
 			},
@@ -307,7 +308,7 @@ func GetStats() Stats { return stats }
 // temporary Buffer and are fine for most applications.
 type Buffer struct {
 	buf   []byte // encode/decode byte stream
-	index int    // write point
+	index int    // read point
 
 	// pools of basic types to amortize allocation.
 	bools   []bool
@@ -888,6 +889,10 @@ func isProto3Zero(v reflect.Value) bool {
 	return false
 }
 
+// ProtoPackageIsVersion2 is referenced from generated protocol buffer files
+// to assert that that code is compatible with this version of the proto package.
+const ProtoPackageIsVersion2 = true
+
 // ProtoPackageIsVersion1 is referenced from generated protocol buffer files
 // to assert that that code is compatible with this version of the proto package.
 const ProtoPackageIsVersion1 = true

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

@@ -149,10 +149,22 @@ func skipVarint(buf []byte) []byte {
 
 // MarshalMessageSet encodes the extension map represented by m in the message set wire format.
 // It is called by generated Marshal methods on protocol buffer messages with the message_set_wire_format option.
-func MarshalMessageSet(m map[int32]Extension) ([]byte, error) {
-	if err := encodeExtensionMap(m); err != nil {
+func MarshalMessageSet(exts interface{}) ([]byte, error) {
+	var m map[int32]Extension
+	switch exts := exts.(type) {
+	case *XXX_InternalExtensions:
+		if err := encodeExtensions(exts); err != nil {
 			return nil, err
 		}
+		m, _ = exts.extensionsRead()
+	case map[int32]Extension:
+		if err := encodeExtensionsMap(exts); err != nil {
+			return nil, err
+		}
+		m = exts
+	default:
+		return nil, errors.New("proto: not an extension map")
+	}
 
 	// Sort extension IDs to provide a deterministic encoding.
 	// See also enc_map in encode.go.
@@ -178,7 +190,17 @@ func MarshalMessageSet(m map[int32]Extension) ([]byte, error) {
 
 // UnmarshalMessageSet decodes the extension map encoded in buf in the message set wire format.
 // It is called by generated Unmarshal methods on protocol buffer messages with the message_set_wire_format option.
-func UnmarshalMessageSet(buf []byte, m map[int32]Extension) error {
+func UnmarshalMessageSet(buf []byte, exts interface{}) error {
+	var m map[int32]Extension
+	switch exts := exts.(type) {
+	case *XXX_InternalExtensions:
+		m = exts.extensionsWrite()
+	case map[int32]Extension:
+		m = exts
+	default:
+		return errors.New("proto: not an extension map")
+	}
+
 	ms := new(messageSet)
 	if err := Unmarshal(buf, ms); err != nil {
 		return err
@@ -209,7 +231,16 @@ func UnmarshalMessageSet(buf []byte, m map[int32]Extension) error {
 
 // MarshalMessageSetJSON encodes the extension map represented by m in JSON format.
 // It is called by generated MarshalJSON methods on protocol buffer messages with the message_set_wire_format option.
-func MarshalMessageSetJSON(m map[int32]Extension) ([]byte, error) {
+func MarshalMessageSetJSON(exts interface{}) ([]byte, error) {
+	var m map[int32]Extension
+	switch exts := exts.(type) {
+	case *XXX_InternalExtensions:
+		m, _ = exts.extensionsRead()
+	case map[int32]Extension:
+		m = exts
+	default:
+		return nil, errors.New("proto: not an extension map")
+	}
 	var b bytes.Buffer
 	b.WriteByte('{')
 
@@ -252,7 +283,7 @@ func MarshalMessageSetJSON(m map[int32]Extension) ([]byte, error) {
 
 // UnmarshalMessageSetJSON decodes the extension map encoded in buf in JSON format.
 // It is called by generated UnmarshalJSON methods on protocol buffer messages with the message_set_wire_format option.
-func UnmarshalMessageSetJSON(buf []byte, m map[int32]Extension) error {
+func UnmarshalMessageSetJSON(buf []byte, exts interface{}) error {
 	// Common-case fast path.
 	if len(buf) == 0 || bytes.Equal(buf, []byte("{}")) {
 		return nil

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

@@ -29,7 +29,7 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// +build appengine
+// +build appengine js
 
 // This file contains an implementation of proto field accesses using package reflect.
 // It is slower than the code in pointer_unsafe.go but it avoids package unsafe and can
@@ -139,6 +139,11 @@ func structPointer_StringSlice(p structPointer, f field) *[]string {
 	return structPointer_ifield(p, f).(*[]string)
 }
 
+// Extensions returns the address of an extension map field in the struct.
+func structPointer_Extensions(p structPointer, f field) *XXX_InternalExtensions {
+	return structPointer_ifield(p, f).(*XXX_InternalExtensions)
+}
+
 // ExtMap returns the address of an extension map field in the struct.
 func structPointer_ExtMap(p structPointer, f field) *map[int32]Extension {
 	return structPointer_ifield(p, f).(*map[int32]Extension)

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

@@ -29,7 +29,7 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// +build !appengine
+// +build !appengine,!js
 
 // This file contains the implementation of the proto field accesses using package unsafe.
 
@@ -126,6 +126,10 @@ func structPointer_StringSlice(p structPointer, f field) *[]string {
 }
 
 // ExtMap returns the address of an extension map field in the struct.
+func structPointer_Extensions(p structPointer, f field) *XXX_InternalExtensions {
+	return (*XXX_InternalExtensions)(unsafe.Pointer(uintptr(p) + uintptr(f)))
+}
+
 func structPointer_ExtMap(p structPointer, f field) *map[int32]Extension {
 	return (*map[int32]Extension)(unsafe.Pointer(uintptr(p) + uintptr(f)))
 }

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

@@ -173,6 +173,7 @@ func (sp *StructProperties) Swap(i, j int) { sp.order[i], sp.order[j] = sp.order
 type Properties struct {
 	Name     string // name of the field, for error messages
 	OrigName string // original name before protocol compiler (always set)
+	JSONName string // name to use for JSON; determined by protoc
 	Wire     string
 	WireType int
 	Tag      int
@@ -229,8 +230,9 @@ func (p *Properties) String() string {
 	if p.Packed {
 		s += ",packed"
 	}
-	if p.OrigName != p.Name {
 	s += ",name=" + p.OrigName
+	if p.JSONName != p.OrigName {
+		s += ",json=" + p.JSONName
 	}
 	if p.proto3 {
 		s += ",proto3"
@@ -310,6 +312,8 @@ func (p *Properties) Parse(s string) {
 			p.Packed = true
 		case strings.HasPrefix(f, "name="):
 			p.OrigName = f[5:]
+		case strings.HasPrefix(f, "json="):
+			p.JSONName = f[5:]
 		case strings.HasPrefix(f, "enum="):
 			p.Enum = f[5:]
 		case f == "proto3":
@@ -469,17 +473,13 @@ func (p *Properties) setEncAndDec(typ reflect.Type, f *reflect.StructField, lock
 			p.dec = (*Buffer).dec_slice_int64
 			p.packedDec = (*Buffer).dec_slice_packed_int64
 		case reflect.Uint8:
-			p.enc = (*Buffer).enc_slice_byte
 			p.dec = (*Buffer).dec_slice_byte
-			p.size = size_slice_byte
-			// This is a []byte, which is either a bytes field,
-			// or the value of a map field. In the latter case,
-			// we always encode an empty []byte, so we should not
-			// use the proto3 enc/size funcs.
-			// f == nil iff this is the key/value of a map field.
-			if p.proto3 && f != nil {
+			if p.proto3 {
 				p.enc = (*Buffer).enc_proto3_slice_byte
 				p.size = size_proto3_slice_byte
+			} else {
+				p.enc = (*Buffer).enc_slice_byte
+				p.size = size_slice_byte
 			}
 		case reflect.Float32, reflect.Float64:
 			switch t2.Bits() {
@@ -678,7 +678,8 @@ func getPropertiesLocked(t reflect.Type) *StructProperties {
 	propertiesMap[t] = prop
 
 	// build properties
-	prop.extendable = reflect.PtrTo(t).Implements(extendableProtoType)
+	prop.extendable = reflect.PtrTo(t).Implements(extendableProtoType) ||
+		reflect.PtrTo(t).Implements(extendableProtoV1Type)
 	prop.unrecField = invalidField
 	prop.Prop = make([]*Properties, t.NumField())
 	prop.order = make([]int, t.NumField())
@@ -689,15 +690,22 @@ func getPropertiesLocked(t reflect.Type) *StructProperties {
 		name := f.Name
 		p.init(f.Type, name, f.Tag.Get("protobuf"), &f, false)
 
-		if f.Name == "XXX_extensions" { // special case
+		if f.Name == "XXX_InternalExtensions" { // special case
+			p.enc = (*Buffer).enc_exts
+			p.dec = nil // not needed
+			p.size = size_exts
+		} else if f.Name == "XXX_extensions" { // special case
 			p.enc = (*Buffer).enc_map
 			p.dec = nil // not needed
 			p.size = size_map
-		}
-		if f.Name == "XXX_unrecognized" { // special case
+		} else if f.Name == "XXX_unrecognized" { // special case
 			prop.unrecField = toField(&f)
 		}
-		oneof := f.Tag.Get("protobuf_oneof") != "" // special case
+		oneof := f.Tag.Get("protobuf_oneof") // special case
+		if oneof != "" {
+			// Oneof fields don't use the traditional protobuf tag.
+			p.OrigName = oneof
+		}
 		prop.Prop[i] = p
 		prop.order[i] = i
 		if debug {
@@ -707,7 +715,7 @@ func getPropertiesLocked(t reflect.Type) *StructProperties {
 			}
 			print("\n")
 		}
-		if p.enc == nil && !strings.HasPrefix(f.Name, "XXX_") && !oneof {
+		if p.enc == nil && !strings.HasPrefix(f.Name, "XXX_") && oneof == "" {
 			fmt.Fprintln(os.Stderr, "proto: no encoder for", f.Name, f.Type.String(), "[GetProperties]")
 		}
 	}
@@ -836,7 +844,29 @@ func RegisterType(x Message, name string) {
 }
 
 // MessageName returns the fully-qualified proto name for the given message type.
-func MessageName(x Message) string { return revProtoTypes[reflect.TypeOf(x)] }
+func MessageName(x Message) string {
+	type xname interface {
+		XXX_MessageName() string
+	}
+	if m, ok := x.(xname); ok {
+		return m.XXX_MessageName()
+	}
+	return revProtoTypes[reflect.TypeOf(x)]
+}
 
 // MessageType returns the message type (pointer to struct) for a named message.
 func MessageType(name string) reflect.Type { return protoTypes[name] }
+
+// A registry of all linked proto files.
+var (
+	protoFiles = make(map[string][]byte) // file name => fileDescriptor
+)
+
+// RegisterFile is called from generated code and maps from the
+// full file name of a .proto file to its compressed FileDescriptorProto.
+func RegisterFile(filename string, fileDescriptor []byte) {
+	protoFiles[filename] = fileDescriptor
+}
+
+// FileDescriptor returns the compressed FileDescriptorProto for a .proto file.
+func FileDescriptor(filename string) []byte { return protoFiles[filename] }

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

@@ -154,7 +154,7 @@ func (w *textWriter) indent() { w.ind++ }
 
 func (w *textWriter) unindent() {
 	if w.ind == 0 {
-		log.Printf("proto: textWriter unindented too far")
+		log.Print("proto: textWriter unindented too far")
 		return
 	}
 	w.ind--
@@ -175,7 +175,93 @@ type raw interface {
 	Bytes() []byte
 }
 
-func writeStruct(w *textWriter, sv reflect.Value) error {
+func requiresQuotes(u string) bool {
+	// When type URL contains any characters except [0-9A-Za-z./\-]*, it must be quoted.
+	for _, ch := range u {
+		switch {
+		case ch == '.' || ch == '/' || ch == '_':
+			continue
+		case '0' <= ch && ch <= '9':
+			continue
+		case 'A' <= ch && ch <= 'Z':
+			continue
+		case 'a' <= ch && ch <= 'z':
+			continue
+		default:
+			return true
+		}
+	}
+	return false
+}
+
+// isAny reports whether sv is a google.protobuf.Any message
+func isAny(sv reflect.Value) bool {
+	type wkt interface {
+		XXX_WellKnownType() string
+	}
+	t, ok := sv.Addr().Interface().(wkt)
+	return ok && t.XXX_WellKnownType() == "Any"
+}
+
+// writeProto3Any writes an expanded google.protobuf.Any message.
+//
+// It returns (false, nil) if sv value can't be unmarshaled (e.g. because
+// required messages are not linked in).
+//
+// It returns (true, error) when sv was written in expanded format or an error
+// was encountered.
+func (tm *TextMarshaler) writeProto3Any(w *textWriter, sv reflect.Value) (bool, error) {
+	turl := sv.FieldByName("TypeUrl")
+	val := sv.FieldByName("Value")
+	if !turl.IsValid() || !val.IsValid() {
+		return true, errors.New("proto: invalid google.protobuf.Any message")
+	}
+
+	b, ok := val.Interface().([]byte)
+	if !ok {
+		return true, errors.New("proto: invalid google.protobuf.Any message")
+	}
+
+	parts := strings.Split(turl.String(), "/")
+	mt := MessageType(parts[len(parts)-1])
+	if mt == nil {
+		return false, nil
+	}
+	m := reflect.New(mt.Elem())
+	if err := Unmarshal(b, m.Interface().(Message)); err != nil {
+		return false, nil
+	}
+	w.Write([]byte("["))
+	u := turl.String()
+	if requiresQuotes(u) {
+		writeString(w, u)
+	} else {
+		w.Write([]byte(u))
+	}
+	if w.compact {
+		w.Write([]byte("]:<"))
+	} else {
+		w.Write([]byte("]: <\n"))
+		w.ind++
+	}
+	if err := tm.writeStruct(w, m.Elem()); err != nil {
+		return true, err
+	}
+	if w.compact {
+		w.Write([]byte("> "))
+	} else {
+		w.ind--
+		w.Write([]byte(">\n"))
+	}
+	return true, nil
+}
+
+func (tm *TextMarshaler) writeStruct(w *textWriter, sv reflect.Value) error {
+	if tm.ExpandAny && isAny(sv) {
+		if canExpand, err := tm.writeProto3Any(w, sv); canExpand {
+			return err
+		}
+	}
 	st := sv.Type()
 	sprops := GetProperties(st)
 	for i := 0; i < sv.NumField(); i++ {
@@ -227,7 +313,7 @@ func writeStruct(w *textWriter, sv reflect.Value) error {
 					}
 					continue
 				}
-				if err := writeAny(w, v, props); err != nil {
+				if err := tm.writeAny(w, v, props); err != nil {
 					return err
 				}
 				if err := w.WriteByte('\n'); err != nil {
@@ -269,7 +355,7 @@ func writeStruct(w *textWriter, sv reflect.Value) error {
 						return err
 					}
 				}
-				if err := writeAny(w, key, props.mkeyprop); err != nil {
+				if err := tm.writeAny(w, key, props.mkeyprop); err != nil {
 					return err
 				}
 				if err := w.WriteByte('\n'); err != nil {
@@ -286,7 +372,7 @@ func writeStruct(w *textWriter, sv reflect.Value) error {
 							return err
 						}
 					}
-					if err := writeAny(w, val, props.mvalprop); err != nil {
+					if err := tm.writeAny(w, val, props.mvalprop); err != nil {
 						return err
 					}
 					if err := w.WriteByte('\n'); err != nil {
@@ -358,7 +444,7 @@ func writeStruct(w *textWriter, sv reflect.Value) error {
 		}
 
 		// Enums have a String method, so writeAny will work fine.
-		if err := writeAny(w, fv, props); err != nil {
+		if err := tm.writeAny(w, fv, props); err != nil {
 			return err
 		}
 
@@ -369,8 +455,8 @@ func writeStruct(w *textWriter, sv reflect.Value) error {
 
 	// Extensions (the XXX_extensions field).
 	pv := sv.Addr()
-	if pv.Type().Implements(extendableProtoType) {
-		if err := writeExtensions(w, pv); err != nil {
+	if _, ok := extendable(pv.Interface()); ok {
+		if err := tm.writeExtensions(w, pv); err != nil {
 			return err
 		}
 	}
@@ -400,7 +486,7 @@ func writeRaw(w *textWriter, b []byte) error {
 }
 
 // writeAny writes an arbitrary field.
-func writeAny(w *textWriter, v reflect.Value, props *Properties) error {
+func (tm *TextMarshaler) writeAny(w *textWriter, v reflect.Value, props *Properties) error {
 	v = reflect.Indirect(v)
 
 	// Floats have special cases.
@@ -427,7 +513,7 @@ func writeAny(w *textWriter, v reflect.Value, props *Properties) error {
 	switch v.Kind() {
 	case reflect.Slice:
 		// Should only be a []byte; repeated fields are handled in writeStruct.
-		if err := writeString(w, string(v.Interface().([]byte))); err != nil {
+		if err := writeString(w, string(v.Bytes())); err != nil {
 			return err
 		}
 	case reflect.String:
@@ -449,15 +535,15 @@ func writeAny(w *textWriter, v reflect.Value, props *Properties) error {
 			}
 		}
 		w.indent()
-		if tm, ok := v.Interface().(encoding.TextMarshaler); ok {
-			text, err := tm.MarshalText()
+		if etm, ok := v.Interface().(encoding.TextMarshaler); ok {
+			text, err := etm.MarshalText()
 			if err != nil {
 				return err
 			}
 			if _, err = w.Write(text); err != nil {
 				return err
 			}
-		} else if err := writeStruct(w, v); err != nil {
+		} else if err := tm.writeStruct(w, v); err != nil {
 			return err
 		}
 		w.unindent()
@@ -601,19 +687,24 @@ func (s int32Slice) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
 
 // writeExtensions writes all the extensions in pv.
 // pv is assumed to be a pointer to a protocol message struct that is extendable.
-func writeExtensions(w *textWriter, pv reflect.Value) error {
+func (tm *TextMarshaler) writeExtensions(w *textWriter, pv reflect.Value) error {
 	emap := extensionMaps[pv.Type().Elem()]
-	ep := pv.Interface().(extendableProto)
+	ep, _ := extendable(pv.Interface())
 
 	// Order the extensions by ID.
 	// This isn't strictly necessary, but it will give us
 	// canonical output, which will also make testing easier.
-	m := ep.ExtensionMap()
+	m, mu := ep.extensionsRead()
+	if m == nil {
+		return nil
+	}
+	mu.Lock()
 	ids := make([]int32, 0, len(m))
 	for id := range m {
 		ids = append(ids, id)
 	}
 	sort.Sort(int32Slice(ids))
+	mu.Unlock()
 
 	for _, extNum := range ids {
 		ext := m[extNum]
@@ -636,13 +727,13 @@ func writeExtensions(w *textWriter, pv reflect.Value) error {
 
 		// Repeated extensions will appear as a slice.
 		if !desc.repeated() {
-			if err := writeExtension(w, desc.Name, pb); err != nil {
+			if err := tm.writeExtension(w, desc.Name, pb); err != nil {
 				return err
 			}
 		} else {
 			v := reflect.ValueOf(pb)
 			for i := 0; i < v.Len(); i++ {
-				if err := writeExtension(w, desc.Name, v.Index(i).Interface()); err != nil {
+				if err := tm.writeExtension(w, desc.Name, v.Index(i).Interface()); err != nil {
 					return err
 				}
 			}
@@ -651,7 +742,7 @@ func writeExtensions(w *textWriter, pv reflect.Value) error {
 	return nil
 }
 
-func writeExtension(w *textWriter, name string, pb interface{}) error {
+func (tm *TextMarshaler) writeExtension(w *textWriter, name string, pb interface{}) error {
 	if _, err := fmt.Fprintf(w, "[%s]:", name); err != nil {
 		return err
 	}
@@ -660,7 +751,7 @@ func writeExtension(w *textWriter, name string, pb interface{}) error {
 			return err
 		}
 	}
-	if err := writeAny(w, reflect.ValueOf(pb), nil); err != nil {
+	if err := tm.writeAny(w, reflect.ValueOf(pb), nil); err != nil {
 		return err
 	}
 	if err := w.WriteByte('\n'); err != nil {
@@ -685,7 +776,15 @@ func (w *textWriter) writeIndent() {
 	w.complete = false
 }
 
-func marshalText(w io.Writer, pb Message, compact bool) error {
+// TextMarshaler is a configurable text format marshaler.
+type TextMarshaler struct {
+	Compact   bool // use compact text format (one line).
+	ExpandAny bool // expand google.protobuf.Any messages of known types
+}
+
+// Marshal writes a given protocol buffer in text format.
+// The only errors returned are from w.
+func (tm *TextMarshaler) Marshal(w io.Writer, pb Message) error {
 	val := reflect.ValueOf(pb)
 	if pb == nil || val.IsNil() {
 		w.Write([]byte("<nil>"))
@@ -700,11 +799,11 @@ func marshalText(w io.Writer, pb Message, compact bool) error {
 	aw := &textWriter{
 		w:        ww,
 		complete: true,
-		compact:  compact,
+		compact:  tm.Compact,
 	}
 
-	if tm, ok := pb.(encoding.TextMarshaler); ok {
-		text, err := tm.MarshalText()
+	if etm, ok := pb.(encoding.TextMarshaler); ok {
+		text, err := etm.MarshalText()
 		if err != nil {
 			return err
 		}
@@ -718,7 +817,7 @@ func marshalText(w io.Writer, pb Message, compact bool) error {
 	}
 	// Dereference the received pointer so we don't have outer < and >.
 	v := reflect.Indirect(val)
-	if err := writeStruct(aw, v); err != nil {
+	if err := tm.writeStruct(aw, v); err != nil {
 		return err
 	}
 	if bw != nil {
@@ -727,25 +826,29 @@ func marshalText(w io.Writer, pb Message, compact bool) error {
 	return nil
 }
 
+// Text is the same as Marshal, but returns the string directly.
+func (tm *TextMarshaler) Text(pb Message) string {
+	var buf bytes.Buffer
+	tm.Marshal(&buf, pb)
+	return buf.String()
+}
+
+var (
+	defaultTextMarshaler = TextMarshaler{}
+	compactTextMarshaler = TextMarshaler{Compact: true}
+)
+
+// TODO: consider removing some of the Marshal functions below.
+
 // MarshalText writes a given protocol buffer in text format.
 // The only errors returned are from w.
-func MarshalText(w io.Writer, pb Message) error {
-	return marshalText(w, pb, false)
-}
+func MarshalText(w io.Writer, pb Message) error { return defaultTextMarshaler.Marshal(w, pb) }
 
 // MarshalTextString is the same as MarshalText, but returns the string directly.
-func MarshalTextString(pb Message) string {
-	var buf bytes.Buffer
-	marshalText(&buf, pb, false)
-	return buf.String()
-}
+func MarshalTextString(pb Message) string { return defaultTextMarshaler.Text(pb) }
 
 // CompactText writes a given protocol buffer in compact text format (one line).
-func CompactText(w io.Writer, pb Message) error { return marshalText(w, pb, true) }
+func CompactText(w io.Writer, pb Message) error { return compactTextMarshaler.Marshal(w, pb) }
 
 // CompactTextString is the same as CompactText, but returns the string directly.
-func CompactTextString(pb Message) string {
-	var buf bytes.Buffer
-	marshalText(&buf, pb, true)
-	return buf.String()
-}
+func CompactTextString(pb Message) string { return compactTextMarshaler.Text(pb) }

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

@@ -44,6 +44,9 @@ import (
 	"unicode/utf8"
 )
 
+// Error string emitted when deserializing Any and fields are already set
+const anyRepeatedlyUnpacked = "Any message unpacked multiple times, or %q already set"
+
 type ParseError struct {
 	Message string
 	Line    int // 1-based line number
@@ -119,6 +122,14 @@ func isWhitespace(c byte) bool {
 	return false
 }
 
+func isQuote(c byte) bool {
+	switch c {
+	case '"', '\'':
+		return true
+	}
+	return false
+}
+
 func (p *textParser) skipWhitespace() {
 	i := 0
 	for i < len(p.s) && (isWhitespace(p.s[i]) || p.s[i] == '#') {
@@ -155,7 +166,7 @@ func (p *textParser) advance() {
 	p.cur.offset, p.cur.line = p.offset, p.line
 	p.cur.unquoted = ""
 	switch p.s[0] {
-	case '<', '>', '{', '}', ':', '[', ']', ';', ',':
+	case '<', '>', '{', '}', ':', '[', ']', ';', ',', '/':
 		// Single symbol
 		p.cur.value, p.s = p.s[0:1], p.s[1:len(p.s)]
 	case '"', '\'':
@@ -333,13 +344,13 @@ func (p *textParser) next() *token {
 	p.advance()
 	if p.done {
 		p.cur.value = ""
-	} else if len(p.cur.value) > 0 && p.cur.value[0] == '"' {
+	} else if len(p.cur.value) > 0 && isQuote(p.cur.value[0]) {
 		// Look for multiple quoted strings separated by whitespace,
 		// and concatenate them.
 		cat := p.cur
 		for {
 			p.skipWhitespace()
-			if p.done || p.s[0] != '"' {
+			if p.done || !isQuote(p.s[0]) {
 				break
 			}
 			p.advance()
@@ -443,7 +454,10 @@ func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
 	fieldSet := make(map[string]bool)
 	// A struct is a sequence of "name: value", terminated by one of
 	// '>' or '}', or the end of the input.  A name may also be
-	// "[extension]".
+	// "[extension]" or "[type/url]".
+	//
+	// The whole struct can also be an expanded Any message, like:
+	// [type/url] < ... struct contents ... >
 	for {
 		tok := p.next()
 		if tok.err != nil {
@@ -453,33 +467,74 @@ func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
 			break
 		}
 		if tok.value == "[" {
-			// Looks like an extension.
+			// Looks like an extension or an Any.
 			//
 			// TODO: Check whether we need to handle
 			// namespace rooted names (e.g. ".something.Foo").
+			extName, err := p.consumeExtName()
+			if err != nil {
+				return err
+			}
+
+			if s := strings.LastIndex(extName, "/"); s >= 0 {
+				// If it contains a slash, it's an Any type URL.
+				messageName := extName[s+1:]
+				mt := MessageType(messageName)
+				if mt == nil {
+					return p.errorf("unrecognized message %q in google.protobuf.Any", messageName)
+				}
 				tok = p.next()
 				if tok.err != nil {
 					return tok.err
 				}
+				// consume an optional colon
+				if tok.value == ":" {
+					tok = p.next()
+					if tok.err != nil {
+						return tok.err
+					}
+				}
+				var terminator string
+				switch tok.value {
+				case "<":
+					terminator = ">"
+				case "{":
+					terminator = "}"
+				default:
+					return p.errorf("expected '{' or '<', found %q", tok.value)
+				}
+				v := reflect.New(mt.Elem())
+				if pe := p.readStruct(v.Elem(), terminator); pe != nil {
+					return pe
+				}
+				b, err := Marshal(v.Interface().(Message))
+				if err != nil {
+					return p.errorf("failed to marshal message of type %q: %v", messageName, err)
+				}
+				if fieldSet["type_url"] {
+					return p.errorf(anyRepeatedlyUnpacked, "type_url")
+				}
+				if fieldSet["value"] {
+					return p.errorf(anyRepeatedlyUnpacked, "value")
+				}
+				sv.FieldByName("TypeUrl").SetString(extName)
+				sv.FieldByName("Value").SetBytes(b)
+				fieldSet["type_url"] = true
+				fieldSet["value"] = true
+				continue
+			}
+
 			var desc *ExtensionDesc
 			// This could be faster, but it's functional.
 			// TODO: Do something smarter than a linear scan.
 			for _, d := range RegisteredExtensions(reflect.New(st).Interface().(Message)) {
-				if d.Name == tok.value {
+				if d.Name == extName {
 					desc = d
 					break
 				}
 			}
 			if desc == nil {
-				return p.errorf("unrecognized extension %q", tok.value)
-			}
-			// Check the extension terminator.
-			tok = p.next()
-			if tok.err != nil {
-				return tok.err
-			}
-			if tok.value != "]" {
-				return p.errorf("unrecognized extension terminator %q", tok.value)
+				return p.errorf("unrecognized extension %q", extName)
 			}
 
 			props := &Properties{}
@@ -506,7 +561,7 @@ func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
 				}
 				reqFieldErr = err
 			}
-			ep := sv.Addr().Interface().(extendableProto)
+			ep := sv.Addr().Interface().(Message)
 			if !rep {
 				SetExtension(ep, desc, ext.Interface())
 			} else {
@@ -537,7 +592,11 @@ func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
 			props = oop.Prop
 			nv := reflect.New(oop.Type.Elem())
 			dst = nv.Elem().Field(0)
-			sv.Field(oop.Field).Set(nv)
+			field := sv.Field(oop.Field)
+			if !field.IsNil() {
+				return p.errorf("field '%s' would overwrite already parsed oneof '%s'", name, sv.Type().Field(oop.Field).Name)
+			}
+			field.Set(nv)
 		}
 		if !dst.IsValid() {
 			return p.errorf("unknown field name %q in %v", name, st)
@@ -558,8 +617,9 @@ func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
 
 			// The map entry should be this sequence of tokens:
 			//	< key : KEY value : VALUE >
-			// Technically the "key" and "value" could come in any order,
-			// but in practice they won't.
+			// However, implementations may omit key or value, and technically
+			// we should support them in any order.  See b/28924776 for a time
+			// this went wrong.
 
 			tok := p.next()
 			var terminator string
@@ -571,9 +631,16 @@ func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
 			default:
 				return p.errorf("expected '{' or '<', found %q", tok.value)
 			}
-			if err := p.consumeToken("key"); err != nil {
-				return err
+			for {
+				tok := p.next()
+				if tok.err != nil {
+					return tok.err
 				}
+				if tok.value == terminator {
+					break
+				}
+				switch tok.value {
+				case "key":
 					if err := p.consumeToken(":"); err != nil {
 						return err
 					}
@@ -583,9 +650,7 @@ func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
 					if err := p.consumeOptionalSeparator(); err != nil {
 						return err
 					}
-			if err := p.consumeToken("value"); err != nil {
-				return err
-			}
+				case "value":
 					if err := p.checkForColon(props.mvalprop, dst.Type().Elem()); err != nil {
 						return err
 					}
@@ -595,8 +660,10 @@ func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
 					if err := p.consumeOptionalSeparator(); err != nil {
 						return err
 					}
-			if err := p.consumeToken(terminator); err != nil {
-				return err
+				default:
+					p.back()
+					return p.errorf(`expected "key", "value", or %q, found %q`, terminator, tok.value)
+				}
 			}
 
 			dst.SetMapIndex(key, val)
@@ -619,7 +686,8 @@ func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
 				return err
 			}
 			reqFieldErr = err
-		} else if props.Required {
+		}
+		if props.Required {
 			reqCount--
 		}
 
@@ -635,6 +703,35 @@ func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
 	return reqFieldErr
 }
 
+// consumeExtName consumes extension name or expanded Any type URL and the
+// following ']'. It returns the name or URL consumed.
+func (p *textParser) consumeExtName() (string, error) {
+	tok := p.next()
+	if tok.err != nil {
+		return "", tok.err
+	}
+
+	// If extension name or type url is quoted, it's a single token.
+	if len(tok.value) > 2 && isQuote(tok.value[0]) && tok.value[len(tok.value)-1] == tok.value[0] {
+		name, err := unquoteC(tok.value[1:len(tok.value)-1], rune(tok.value[0]))
+		if err != nil {
+			return "", err
+		}
+		return name, p.consumeToken("]")
+	}
+
+	// Consume everything up to "]"
+	var parts []string
+	for tok.value != "]" {
+		parts = append(parts, tok.value)
+		tok = p.next()
+		if tok.err != nil {
+			return "", p.errorf("unrecognized type_url or extension name: %s", tok.err)
+		}
+	}
+	return strings.Join(parts, ""), nil
+}
+
 // consumeOptionalSeparator consumes an optional semicolon or comma.
 // It is used in readStruct to provide backward compatibility.
 func (p *textParser) consumeOptionalSeparator() error {
@@ -699,12 +796,12 @@ func (p *textParser) readAny(v reflect.Value, props *Properties) error {
 		fv.Set(reflect.Append(fv, reflect.New(at.Elem()).Elem()))
 		return p.readAny(fv.Index(fv.Len()-1), props)
 	case reflect.Bool:
-		// Either "true", "false", 1 or 0.
+		// true/1/t/True or false/f/0/False.
 		switch tok.value {
-		case "true", "1":
+		case "true", "1", "t", "True":
 			fv.SetBool(true)
 			return nil
-		case "false", "0":
+		case "false", "0", "f", "False":
 			fv.SetBool(false)
 			return nil
 		}

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

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

vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/decode.go

@@ -38,7 +38,7 @@ var errInvalidVarint = errors.New("invalid varint32 encountered")
 func ReadDelimited(r io.Reader, m proto.Message) (n int, err error) {
 	// Per AbstractParser#parsePartialDelimitedFrom with
 	// CodedInputStream#readRawVarint32.
-	headerBuf := make([]byte, binary.MaxVarintLen32)
+	var headerBuf [binary.MaxVarintLen32]byte
 	var bytesRead, varIntBytes int
 	var messageLength uint64
 	for varIntBytes == 0 { // i.e. no varint has been decoded yet.

vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/encode.go

@@ -33,8 +33,8 @@ func WriteDelimited(w io.Writer, m proto.Message) (n int, err error) {
 		return 0, err
 	}
 
-	buf := make([]byte, binary.MaxVarintLen32)
-	encodedLength := binary.PutUvarint(buf, uint64(len(buffer)))
+	var buf [binary.MaxVarintLen32]byte
+	encodedLength := binary.PutUvarint(buf[:], uint64(len(buffer)))
 
 	sync, err := w.Write(buf[:encodedLength])
 	if err != nil {

vendor/github.com/prometheus/client_golang/NOTICE

@@ -7,11 +7,6 @@ SoundCloud Ltd. (http://soundcloud.com/).
 
 The following components are included in this product:
 
-goautoneg
-http://bitbucket.org/ww/goautoneg
-Copyright 2011, Open Knowledge Foundation Ltd.
-See README.txt for license details.
-
 perks - a fork of https://github.com/bmizerany/perks
 https://github.com/beorn7/perks
 Copyright 2013-2015 Blake Mizerany, Björn Rabenstein

vendor/github.com/prometheus/client_golang/prometheus/README.md

@@ -1,53 +1 @@
-# Overview
-This is the [Prometheus](http://www.prometheus.io) telemetric
-instrumentation client [Go](http://golang.org) client library.  It
-enable authors to define process-space metrics for their servers and
-expose them through a web service interface for extraction,
-aggregation, and a whole slew of other post processing techniques.
-
-# Installing
-    $ go get github.com/prometheus/client_golang/prometheus
-
-# Example
-```go
-package main
-
-import (
-	"net/http"
-
-	"github.com/prometheus/client_golang/prometheus"
-)
-
-var (
-	indexed = prometheus.NewCounter(prometheus.CounterOpts{
-		Namespace: "my_company",
-		Subsystem: "indexer",
-		Name:      "documents_indexed",
-		Help:      "The number of documents indexed.",
-	})
-	size = prometheus.NewGauge(prometheus.GaugeOpts{
-		Namespace: "my_company",
-		Subsystem: "storage",
-		Name:      "documents_total_size_bytes",
-		Help:      "The total size of all documents in the storage.",
-	})
-)
-
-func main() {
-	http.Handle("/metrics", prometheus.Handler())
-
-	indexed.Inc()
-	size.Set(5)
-
-	http.ListenAndServe(":8080", nil)
-}
-
-func init() {
-	prometheus.MustRegister(indexed)
-	prometheus.MustRegister(size)
-}
-```
-
-# Documentation
-
-[![GoDoc](https://godoc.org/github.com/prometheus/client_golang?status.png)](https://godoc.org/github.com/prometheus/client_golang)
+See [![go-doc](https://godoc.org/github.com/prometheus/client_golang/prometheus?status.svg)](https://godoc.org/github.com/prometheus/client_golang/prometheus).

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

@@ -15,15 +15,15 @@ package prometheus
 
 // Collector is the interface implemented by anything that can be used by
 // Prometheus to collect metrics. A Collector has to be registered for
-// collection. See Register, MustRegister, RegisterOrGet, and MustRegisterOrGet.
+// collection. See Registerer.Register.
 //
-// The stock metrics provided by this package (like Gauge, Counter, Summary) are
-// also Collectors (which only ever collect one metric, namely itself). An
-// implementer of Collector may, however, collect multiple metrics in a
-// coordinated fashion and/or create metrics on the fly. Examples for collectors
-// already implemented in this library are the metric vectors (i.e. collection
-// of multiple instances of the same Metric but with different label values)
-// like GaugeVec or SummaryVec, and the ExpvarCollector.
+// The stock metrics provided by this package (Gauge, Counter, Summary,
+// Histogram, Untyped) are also Collectors (which only ever collect one metric,
+// namely itself). An implementer of Collector may, however, collect multiple
+// metrics in a coordinated fashion and/or create metrics on the fly. Examples
+// for collectors already implemented in this library are the metric vectors
+// (i.e. collection of multiple instances of the same Metric but with different
+// label values) like GaugeVec or SummaryVec, and the ExpvarCollector.
 type Collector interface {
 	// Describe sends the super-set of all possible descriptors of metrics
 	// collected by this Collector to the provided channel and returns once
@@ -37,39 +37,39 @@ type Collector interface {
 	// executing this method, it must send an invalid descriptor (created
 	// with NewInvalidDesc) to signal the error to the registry.
 	Describe(chan<- *Desc)
-	// Collect is called by Prometheus when collecting metrics. The
-	// implementation sends each collected metric via the provided channel
-	// and returns once the last metric has been sent. The descriptor of
-	// each sent metric is one of those returned by Describe. Returned
-	// metrics that share the same descriptor must differ in their variable
-	// label values. This method may be called concurrently and must
-	// therefore be implemented in a concurrency safe way. Blocking occurs
-	// at the expense of total performance of rendering all registered
-	// metrics. Ideally, Collector implementations support concurrent
-	// readers.
+	// Collect is called by the Prometheus registry when collecting
+	// metrics. The implementation sends each collected metric via the
+	// provided channel and returns once the last metric has been sent. The
+	// descriptor of each sent metric is one of those returned by
+	// Describe. Returned metrics that share the same descriptor must differ
+	// in their variable label values. This method may be called
+	// concurrently and must therefore be implemented in a concurrency safe
+	// way. Blocking occurs at the expense of total performance of rendering
+	// all registered metrics. Ideally, Collector implementations support
+	// concurrent readers.
 	Collect(chan<- Metric)
 }
 
-// SelfCollector implements Collector for a single Metric so that that the
-// Metric collects itself. Add it as an anonymous field to a struct that
-// implements Metric, and call Init with the Metric itself as an argument.
-type SelfCollector struct {
+// selfCollector implements Collector for a single Metric so that the Metric
+// collects itself. Add it as an anonymous field to a struct that implements
+// Metric, and call init with the Metric itself as an argument.
+type selfCollector struct {
 	self Metric
 }
 
-// Init provides the SelfCollector with a reference to the metric it is supposed
+// init provides the selfCollector with a reference to the metric it is supposed
 // to collect. It is usually called within the factory function to create a
 // metric. See example.
-func (c *SelfCollector) Init(self Metric) {
+func (c *selfCollector) init(self Metric) {
 	c.self = self
 }
 
 // Describe implements Collector.
-func (c *SelfCollector) Describe(ch chan<- *Desc) {
+func (c *selfCollector) Describe(ch chan<- *Desc) {
 	ch <- c.self.Desc()
 }
 
 // Collect implements Collector.
-func (c *SelfCollector) Collect(ch chan<- Metric) {
+func (c *selfCollector) Collect(ch chan<- Metric) {
 	ch <- c.self
 }

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

@@ -35,6 +35,9 @@ type Counter interface {
 	// Prometheus metric. Do not use it for regular handling of a
 	// Prometheus counter (as it can be used to break the contract of
 	// monotonically increasing values).
+	//
+	// Deprecated: Use NewConstMetric to create a counter for an external
+	// value. A Counter should never be set.
 	Set(float64)
 	// Inc increments the counter by 1.
 	Inc()
@@ -55,7 +58,7 @@ func NewCounter(opts CounterOpts) Counter {
 		opts.ConstLabels,
 	)
 	result := &counter{value: value{desc: desc, valType: CounterValue, labelPairs: desc.constLabelPairs}}
-	result.Init(result) // Init self-collection.
+	result.init(result) // Init self-collection.
 	return result
 }
 
@@ -79,7 +82,7 @@ func (c *counter) Add(v float64) {
 // 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
@@ -93,19 +96,15 @@ func NewCounterVec(opts CounterOpts, labelNames []string) *CounterVec {
 		opts.ConstLabels,
 	)
 	return &CounterVec{
-		MetricVec: MetricVec{
-			children: map[uint64]Metric{},
-			desc:     desc,
-			newMetric: func(lvs ...string) Metric {
+		MetricVec: newMetricVec(desc, func(lvs ...string) Metric {
 			result := &counter{value: value{
 				desc:       desc,
 				valType:    CounterValue,
 				labelPairs: makeLabelPairs(desc, lvs),
 			}}
-				result.Init(result) // Init self-collection.
+			result.init(result) // Init self-collection.
 			return result
-			},
-		},
+		}),
 	}
 }
 

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

@@ -1,3 +1,16 @@
+// Copyright 2016 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
 
 import (

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

@@ -11,18 +11,17 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// Package prometheus provides embeddable metric primitives for servers and
-// standardized exposition of telemetry through a web services interface.
+// Package prometheus provides metrics primitives to instrument code for
+// monitoring. It also offers a registry for metrics. Sub-packages allow to
+// expose the registered metrics via HTTP (package promhttp) or push them to a
+// Pushgateway (package push).
 //
 // All exported functions and methods are safe to be used concurrently unless
 //specified otherwise.
 //
-// To expose metrics registered with the Prometheus registry, an HTTP server
-// needs to know about the Prometheus handler. The usual endpoint is "/metrics".
+// A Basic Example
 //
-//     http.Handle("/metrics", prometheus.Handler())
-//
-// As a starting point a very basic usage example:
+// As a starting point, a very basic usage example:
 //
 //    package main
 //
@@ -30,6 +29,7 @@
 //    	"net/http"
 //
 //    	"github.com/prometheus/client_golang/prometheus"
+//    	"github.com/prometheus/client_golang/prometheus/promhttp"
 //    )
 //
 //    var (
@@ -37,73 +37,145 @@
 //    		Name: "cpu_temperature_celsius",
 //    		Help: "Current temperature of the CPU.",
 //    	})
-//    	hdFailures = prometheus.NewCounter(prometheus.CounterOpts{
+//    	hdFailures = prometheus.NewCounterVec(
+//    		prometheus.CounterOpts{
 //    			Name: "hd_errors_total",
 //    			Help: "Number of hard-disk errors.",
-//    	})
+//    		},
+//    		[]string{"device"},
+//    	)
 //    )
 //
 //    func init() {
+//    	// Metrics have to be registered to be exposed:
 //    	prometheus.MustRegister(cpuTemp)
 //    	prometheus.MustRegister(hdFailures)
 //    }
 //
 //    func main() {
 //    	cpuTemp.Set(65.3)
-//    	hdFailures.Inc()
+//    	hdFailures.With(prometheus.Labels{"device":"/dev/sda"}).Inc()
 //
-//    	http.Handle("/metrics", prometheus.Handler())
+//    	// 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())
 //    	http.ListenAndServe(":8080", nil)
 //    }
 //
 //
-// This is a complete program that exports two metrics, a Gauge and a Counter.
-// It also exports some stats about the HTTP usage of the /metrics
-// endpoint. (See the Handler function for more detail.)
+// This is a complete program that exports two metrics, a Gauge and a Counter,
+// the latter with a label attached to turn it into a (one-dimensional) vector.
 //
-// Two more advanced metric types are the Summary and Histogram.
+// Metrics
 //
-// In addition to the fundamental metric types Gauge, Counter, Summary, and
-// Histogram, a very important part of the Prometheus data model is the
-// partitioning of samples along dimensions called labels, which results in
+// The number of exported identifiers in this package might appear a bit
+// overwhelming. Hovever, 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.
+//
+// Above, you have already touched the Counter and the Gauge. There are two more
+// advanced metric types: the Summary and Histogram. A more thorough description
+// of those four metric types can be found in the Prometheus docs:
+// https://prometheus.io/docs/concepts/metric_types/
+//
+// A fifth "type" of metric is Untyped. It behaves like a Gauge, but signals the
+// Prometheus server not to assume anything about its type.
+//
+// In addition to the fundamental metric types Gauge, Counter, Summary,
+// Histogram, and Untyped, a very important part of the Prometheus data model is
+// the partitioning of samples along dimensions called labels, which results in
 // metric vectors. The fundamental types are GaugeVec, CounterVec, SummaryVec,
-// and HistogramVec.
+// HistogramVec, and UntypedVec.
 //
-// Those are all the parts needed for basic usage. Detailed documentation and
-// examples are provided below.
+// While only the fundamental metric types implement the Metric interface, both
+// the metrics and their vector versions implement the Collector interface. A
+// Collector manages the collection of a number of Metrics, but for convenience,
+// a Metric can also “collect itself”. Note that Gauge, Counter, Summary,
+// Histogram, and Untyped are interfaces themselves while GaugeVec, CounterVec,
+// SummaryVec, HistogramVec, and UntypedVec are not.
 //
-// Everything else this package offers is essentially for "power users" only. A
-// few pointers to "power user features":
+// To create instances of Metrics and their vector versions, you need a suitable
+// …Opts struct, i.e. GaugeOpts, CounterOpts, SummaryOpts,
+// HistogramOpts, or UntypedOpts.
 //
-// All the various ...Opts structs have a ConstLabels field for labels that
-// never change their value (which is only useful under special circumstances,
-// see documentation of the Opts type).
+// Custom Collectors and constant Metrics
 //
-// The Untyped metric behaves like a Gauge, but signals the Prometheus server
-// not to assume anything about its type.
+// While you could create your own implementations of Metric, most likely you
+// will only ever implement the Collector interface on your own. At a first
+// glance, a custom Collector seems handy to bundle Metrics for common
+// registration (with the prime example of the different metric vectors above,
+// which bundle all the metrics of the same name but with different labels).
 //
-// Functions to fine-tune how the metric registry works: EnableCollectChecks,
-// PanicOnCollectError, Register, Unregister, SetMetricFamilyInjectionHook.
+// There is a more involved use case, too: If you already have metrics
+// available, created outside of the Prometheus context, you don't need the
+// interface of the various Metric types. You essentially want to mirror the
+// existing numbers into Prometheus Metrics during collection. An own
+// implementation of the Collector interface is perfect for that. You can create
+// Metric instances “on the fly” using NewConstMetric, NewConstHistogram, and
+// NewConstSummary (and their respective Must… versions). That will happen in
+// the Collect method. The Describe method has to return separate Desc
+// instances, representative of the “throw-away” metrics to be created
+// later. NewDesc comes in handy to create those Desc instances.
 //
-// For custom metric collection, there are two entry points: Custom Metric
-// implementations and custom Collector implementations. A Metric is the
-// fundamental unit in the Prometheus data model: a sample at a point in time
-// together with its meta-data (like its fully-qualified name and any number of
-// pairs of label name and label value) that knows how to marshal itself into a
-// data transfer object (aka DTO, implemented as a protocol buffer). A Collector
-// gets registered with the Prometheus registry and manages the collection of
-// one or more Metrics. Many parts of this package are building blocks for
-// Metrics and Collectors. Desc is the metric descriptor, actually used by all
-// metrics under the hood, and by Collectors to describe the Metrics to be
-// collected, but only to be dealt with by users if they implement their own
-// Metrics or Collectors. To create a Desc, the BuildFQName function will come
-// in handy. Other useful components for Metric and Collector implementation
-// include: LabelPairSorter to sort the DTO version of label pairs,
-// NewConstMetric and MustNewConstMetric to create "throw away" Metrics at
-// collection time, MetricVec to bundle custom Metrics into a metric vector
-// Collector, SelfCollector to make a custom Metric collect itself.
+// The Collector example illustrates the use case. You can also look at the
+// source code of the processCollector (mirroring process metrics), the
+// goCollector (mirroring Go metrics), or the expvarCollector (mirroring expvar
+// metrics) as examples that are used in this package itself.
 //
-// A good example for a custom Collector is the ExpVarCollector included in this
-// package, which exports variables exported via the "expvar" package as
-// Prometheus metrics.
+// If you just need to call a function to get a single float value to collect as
+// a metric, GaugeFunc, CounterFunc, or UntypedFunc might be interesting
+// shortcuts.
+//
+// Advanced Uses of the Registry
+//
+// While MustRegister is the by far most common way of registering a Collector,
+// sometimes you might want to handle the errors the registration might
+// cause. As suggested by the name, MustRegister panics if an error occurs. With
+// the Register function, the error is returned and can be handled.
+//
+// An error is returned if the registered Collector is incompatible or
+// inconsistent with already registered metrics. The registry aims for
+// consistency of the collected metrics according to the Prometheus data
+// model. Inconsistencies are ideally detected at registration time, not at
+// collect time. The former will usually be detected at start-up time of a
+// program, while the latter will only happen at scrape time, possibly not even
+// on the first scrape if the inconsistency only becomes relevant later. That is
+// the main reason why a Collector and a Metric have to describe themselves to
+// the registry.
+//
+// So far, everything we did operated on the so-called default registry, as it
+// can be found in the global DefaultRegistry variable. With NewRegistry, you
+// can create a custom registry, or you can even implement the Registerer or
+// Gatherer interfaces yourself. The methods Register and Unregister work in
+// the same way on a custom registry as the global functions Register and
+// Unregister on the default registry.
+//
+// There are a number of uses for custom registries: You can use registries
+// with special properties, see NewPedanticRegistry. You can avoid global state,
+// as it is imposed by the DefaultRegistry. You can use multiple registries at
+// the same time to expose different metrics in different ways. You can use
+// separate registries for testing purposes.
+//
+// Also note that the DefaultRegistry comes registered with a Collector for Go
+// runtime metrics (via NewGoCollector) and a Collector for process metrics (via
+// NewProcessCollector). With a custom registry, you are in control and decide
+// yourself about the Collectors to register.
+//
+// HTTP Exposition
+//
+// The Registry implements the Gatherer interface. The caller of the Gather
+// method can then expose the gathered metrics in some way. Usually, the metrics
+// are served via HTTP on the /metrics endpoint. That's happening in the example
+// above. The tools to expose metrics via HTTP are in the promhttp
+// sub-package. (The top-level functions in the prometheus package are
+// deprecated.)
+//
+// Pushing to the Pushgateway
+//
+// Function for pushing to the Pushgateway can be found in the push sub-package.
+//
+// Other Means of Exposition
+//
+// More ways of exposing metrics can easily be added. Sending metrics to
+// Graphite would be an example that will soon be implemented.
 package prometheus

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

@@ -18,21 +18,21 @@ import (
 	"expvar"
 )
 
-// ExpvarCollector collects metrics from the expvar interface. It provides a
-// quick way to expose numeric values that are already exported via expvar as
-// Prometheus metrics. Note that the data models of expvar and Prometheus are
-// fundamentally different, and that the ExpvarCollector is inherently
-// slow. Thus, the ExpvarCollector is probably great for experiments and
-// prototying, but you should seriously consider a more direct implementation of
-// Prometheus metrics for monitoring production systems.
-//
-// Use NewExpvarCollector to create new instances.
-type ExpvarCollector struct {
+type expvarCollector struct {
 	exports map[string]*Desc
 }
 
-// NewExpvarCollector returns a newly allocated ExpvarCollector that still has
-// to be registered with the Prometheus registry.
+// NewExpvarCollector returns a newly allocated expvar Collector that still has
+// to be registered with a Prometheus registry.
+//
+// An expvar Collector collects metrics from the expvar interface. It provides a
+// quick way to expose numeric values that are already exported via expvar as
+// Prometheus metrics. Note that the data models of expvar and Prometheus are
+// fundamentally different, and that the expvar Collector is inherently slower
+// than native Prometheus metrics. Thus, the expvar Collector is probably great
+// for experiments and prototying, but you should seriously consider a more
+// direct implementation of Prometheus metrics for monitoring production
+// systems.
 //
 // The exports map has the following meaning:
 //
@@ -59,21 +59,21 @@ type ExpvarCollector struct {
 // sample values.
 //
 // Anything that does not fit into the scheme above is silently ignored.
-func NewExpvarCollector(exports map[string]*Desc) *ExpvarCollector {
-	return &ExpvarCollector{
+func NewExpvarCollector(exports map[string]*Desc) Collector {
+	return &expvarCollector{
 		exports: exports,
 	}
 }
 
 // Describe implements Collector.
-func (e *ExpvarCollector) Describe(ch chan<- *Desc) {
+func (e *expvarCollector) Describe(ch chan<- *Desc) {
 	for _, desc := range e.exports {
 		ch <- desc
 	}
 }
 
 // Collect implements Collector.
-func (e *ExpvarCollector) Collect(ch chan<- Metric) {
+func (e *expvarCollector) Collect(ch chan<- Metric) {
 	for name, desc := range e.exports {
 		var m Metric
 		expVar := expvar.Get(name)

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

@@ -58,7 +58,7 @@ 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
@@ -72,13 +72,9 @@ func NewGaugeVec(opts GaugeOpts, labelNames []string) *GaugeVec {
 		opts.ConstLabels,
 	)
 	return &GaugeVec{
-		MetricVec: MetricVec{
-			children: map[uint64]Metric{},
-			desc:     desc,
-			newMetric: func(lvs ...string) Metric {
+		MetricVec: newMetricVec(desc, func(lvs ...string) Metric {
 			return newValue(desc, GaugeValue, 0, lvs...)
-			},
-		},
+		}),
 	}
 }
 

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

@@ -17,7 +17,7 @@ type goCollector struct {
 
 // NewGoCollector returns a collector which exports metrics about the current
 // go process.
-func NewGoCollector() *goCollector {
+func NewGoCollector() Collector {
 	return &goCollector{
 		goroutines: NewGauge(GaugeOpts{
 			Namespace: "go",
@@ -211,7 +211,7 @@ func NewGoCollector() *goCollector {
 					"Number of seconds since 1970 of last garbage collection.",
 					nil, nil,
 				),
-				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.LastGC*10 ^ 9) },
+				eval:    func(ms *runtime.MemStats) float64 { return float64(ms.LastGC) / 1e9 },
 				valType: GaugeValue,
 			},
 		},

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

@@ -51,11 +51,11 @@ type Histogram interface {
 // bucket of a histogram ("le" -> "less or equal").
 const bucketLabel = "le"
 
-var (
 // DefBuckets are the default Histogram buckets. The default buckets are
-	// tailored to broadly measure the response time (in seconds) of a
-	// network service. Most likely, however, you will be required to define
-	// buckets customized to your use case.
+// tailored to broadly measure the response time (in seconds) of a network
+// service. Most likely, however, you will be required to define buckets
+// customized to your use case.
+var (
 	DefBuckets = []float64{.005, .01, .025, .05, .1, .25, .5, 1, 2.5, 5, 10}
 
 	errBucketLabelNotAllowed = fmt.Errorf(
@@ -210,7 +210,7 @@ func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogr
 	// Finally we know the final length of h.upperBounds and can make counts.
 	h.counts = make([]uint64, len(h.upperBounds))
 
-	h.Init(h) // Init self-collection.
+	h.init(h) // Init self-collection.
 	return h
 }
 
@@ -222,7 +222,7 @@ type histogram struct {
 	sumBits uint64
 	count   uint64
 
-	SelfCollector
+	selfCollector
 	// Note that there is no mutex required.
 
 	desc *Desc
@@ -287,7 +287,7 @@ 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
@@ -301,13 +301,9 @@ func NewHistogramVec(opts HistogramOpts, labelNames []string) *HistogramVec {
 		opts.ConstLabels,
 	)
 	return &HistogramVec{
-		MetricVec: MetricVec{
-			children: map[uint64]Metric{},
-			desc:     desc,
-			newMetric: func(lvs ...string) Metric {
+		MetricVec: newMetricVec(desc, func(lvs ...string) Metric {
 			return newHistogram(desc, opts, lvs...)
-			},
-		},
+		}),
 	}
 }
 

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

@@ -15,14 +15,114 @@ package prometheus
 
 import (
 	"bufio"
+	"bytes"
+	"compress/gzip"
+	"fmt"
 	"io"
 	"net"
 	"net/http"
 	"strconv"
 	"strings"
+	"sync"
 	"time"
+
+	"github.com/prometheus/common/expfmt"
 )
 
+// TODO(beorn7): Remove this whole file. It is a partial mirror of
+// promhttp/http.go (to avoid circular import chains) where everything HTTP
+// related should live. The functions here are just for avoiding
+// breakage. Everything is deprecated.
+
+const (
+	contentTypeHeader     = "Content-Type"
+	contentLengthHeader   = "Content-Length"
+	contentEncodingHeader = "Content-Encoding"
+	acceptEncodingHeader  = "Accept-Encoding"
+)
+
+var bufPool sync.Pool
+
+func getBuf() *bytes.Buffer {
+	buf := bufPool.Get()
+	if buf == nil {
+		return &bytes.Buffer{}
+	}
+	return buf.(*bytes.Buffer)
+}
+
+func giveBuf(buf *bytes.Buffer) {
+	buf.Reset()
+	bufPool.Put(buf)
+}
+
+// Handler returns an HTTP handler for the DefaultGatherer. It is
+// already instrumented with InstrumentHandler (using "prometheus" as handler
+// name).
+//
+// Deprecated: Please note the issues described in the doc comment of
+// InstrumentHandler. You might want to consider using promhttp.Handler instead
+// (which is non instrumented).
+func Handler() http.Handler {
+	return InstrumentHandler("prometheus", UninstrumentedHandler())
+}
+
+// UninstrumentedHandler returns an HTTP handler for the DefaultGatherer.
+//
+// Deprecated: Use promhttp.Handler instead. See there for further documentation.
+func UninstrumentedHandler() http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
+		mfs, err := DefaultGatherer.Gather()
+		if err != nil {
+			http.Error(w, "An error has occurred during metrics collection:\n\n"+err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		contentType := expfmt.Negotiate(req.Header)
+		buf := getBuf()
+		defer giveBuf(buf)
+		writer, encoding := decorateWriter(req, buf)
+		enc := expfmt.NewEncoder(writer, contentType)
+		var lastErr error
+		for _, mf := range mfs {
+			if err := enc.Encode(mf); err != nil {
+				lastErr = err
+				http.Error(w, "An error has occurred during metrics encoding:\n\n"+err.Error(), http.StatusInternalServerError)
+				return
+			}
+		}
+		if closer, ok := writer.(io.Closer); ok {
+			closer.Close()
+		}
+		if lastErr != nil && buf.Len() == 0 {
+			http.Error(w, "No metrics encoded, last error:\n\n"+err.Error(), http.StatusInternalServerError)
+			return
+		}
+		header := w.Header()
+		header.Set(contentTypeHeader, string(contentType))
+		header.Set(contentLengthHeader, fmt.Sprint(buf.Len()))
+		if encoding != "" {
+			header.Set(contentEncodingHeader, encoding)
+		}
+		w.Write(buf.Bytes())
+	})
+}
+
+// decorateWriter wraps a writer to handle gzip compression if requested.  It
+// returns the decorated writer and the appropriate "Content-Encoding" header
+// (which is empty if no compression is enabled).
+func decorateWriter(request *http.Request, writer io.Writer) (io.Writer, string) {
+	header := request.Header.Get(acceptEncodingHeader)
+	parts := strings.Split(header, ",")
+	for _, part := range parts {
+		part := strings.TrimSpace(part)
+		if part == "gzip" || strings.HasPrefix(part, "gzip;") {
+			return gzip.NewWriter(writer), "gzip"
+		}
+	}
+	return writer, ""
+}
+
 var instLabels = []string{"method", "code"}
 
 type nower interface {
@@ -57,12 +157,34 @@ func nowSeries(t ...time.Time) nower {
 // has a constant label named "handler" with the provided handlerName as
 // 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:
+//
+// - It uses Summaries rather than Histograms. Summaries are not useful if
+// aggregation across multiple instances is required.
+//
+// - It uses microseconds as unit, which is deprecated and should be replaced by
+// seconds.
+//
+// - The size of the request is calculated in a separate goroutine. Since this
+// calculator requires access to the request header, it creates a race with
+// any writes to the header performed during request handling.
+// httputil.ReverseProxy is a prominent example for a handler
+// performing such writes.
+//
+// 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)
 }
 
 // InstrumentHandlerFunc wraps the given function for instrumentation. It
-// otherwise works in the same way as InstrumentHandler.
+// otherwise works in the same way as InstrumentHandler (and shares the same
+// issues).
+//
+// Deprecated: InstrumentHandlerFunc is deprecated for the same reasons as
+// InstrumentHandler is.
 func InstrumentHandlerFunc(handlerName string, handlerFunc func(http.ResponseWriter, *http.Request)) http.HandlerFunc {
 	return InstrumentHandlerFuncWithOpts(
 		SummaryOpts{
@@ -73,13 +195,13 @@ func InstrumentHandlerFunc(handlerName string, handlerFunc func(http.ResponseWri
 	)
 }
 
-// InstrumentHandlerWithOpts works like InstrumentHandler but provides more
-// flexibility (at the cost of a more complex call syntax). As
-// InstrumentHandler, this function registers four metric collectors, but it
-// uses the provided SummaryOpts to create them. However, the fields "Name" and
-// "Help" in the SummaryOpts are ignored. "Name" is replaced by
-// "requests_total", "request_duration_microseconds", "request_size_bytes", and
-// "response_size_bytes", respectively. "Help" is replaced by an appropriate
+// InstrumentHandlerWithOpts works like InstrumentHandler (and shares the same
+// issues) but provides more flexibility (at the cost of a more complex call
+// syntax). As InstrumentHandler, this function registers four metric
+// collectors, but it uses the provided SummaryOpts to create them. However, the
+// fields "Name" and "Help" in the SummaryOpts are ignored. "Name" is replaced
+// by "requests_total", "request_duration_microseconds", "request_size_bytes",
+// and "response_size_bytes", respectively. "Help" is replaced by an appropriate
 // help string. The names of the variable labels of the http_requests_total
 // CounterVec are "method" (get, post, etc.), and "code" (HTTP status code).
 //
@@ -98,13 +220,20 @@ func InstrumentHandlerFunc(handlerName string, handlerFunc func(http.ResponseWri
 // cannot use SummaryOpts. Instead, a CounterOpts struct is created internally,
 // and all its fields are set to the equally named fields in the provided
 // SummaryOpts.
+//
+// Deprecated: InstrumentHandlerWithOpts is deprecated for the same reasons as
+// InstrumentHandler is.
 func InstrumentHandlerWithOpts(opts SummaryOpts, handler http.Handler) http.HandlerFunc {
 	return InstrumentHandlerFuncWithOpts(opts, handler.ServeHTTP)
 }
 
-// InstrumentHandlerFuncWithOpts works like InstrumentHandlerFunc but provides
-// more flexibility (at the cost of a more complex call syntax). See
-// InstrumentHandlerWithOpts for details how the provided SummaryOpts are used.
+// InstrumentHandlerFuncWithOpts works like InstrumentHandlerFunc (and shares
+// the same issues) but provides more flexibility (at the cost of a more complex
+// call syntax). See InstrumentHandlerWithOpts for details how the provided
+// SummaryOpts are used.
+//
+// Deprecated: InstrumentHandlerFuncWithOpts is deprecated for the same reasons
+// as InstrumentHandler is.
 func InstrumentHandlerFuncWithOpts(opts SummaryOpts, handlerFunc func(http.ResponseWriter, *http.Request)) http.HandlerFunc {
 	reqCnt := NewCounterVec(
 		CounterOpts{

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

@@ -22,10 +22,8 @@ import (
 const separatorByte byte = 255
 
 // A Metric models a single sample value with its meta data being exported to
-// Prometheus. Implementers of Metric in this package inclued Gauge, Counter,
-// Untyped, and Summary. Users can implement their own Metric types, but that
-// should be rarely needed. See the example for SelfCollector, which is also an
-// example for a user-implemented Metric.
+// Prometheus. Implementations of Metric in this package are Gauge, Counter,
+// Histogram, Summary, and Untyped.
 type Metric interface {
 	// Desc returns the descriptor for the Metric. This method idempotently
 	// returns the same descriptor throughout the lifetime of the
@@ -36,21 +34,23 @@ type Metric interface {
 	// Write encodes the Metric into a "Metric" Protocol Buffer data
 	// transmission object.
 	//
-	// Implementers of custom Metric types must observe concurrency safety
-	// as reads of this metric may occur at any time, and any blocking
-	// occurs at the expense of total performance of rendering all
-	// registered metrics. Ideally Metric implementations should support
-	// concurrent readers.
+	// Metric implementations must observe concurrency safety as reads of
+	// this metric may occur at any time, and any blocking occurs at the
+	// expense of total performance of rendering all registered
+	// metrics. Ideally, Metric implementations should support concurrent
+	// readers.
 	//
-	// The Prometheus client library attempts to minimize memory allocations
-	// and will provide a pre-existing reset dto.Metric pointer. Prometheus
-	// may recycle the dto.Metric proto message, so Metric implementations
-	// should just populate the provided dto.Metric and then should not keep
-	// any reference to it.
-	//
-	// While populating dto.Metric, labels must be sorted lexicographically.
-	// (Implementers may find LabelPairSorter useful for that.)
+	// While populating dto.Metric, it is the responsibility of the
+	// implementation to ensure validity of the Metric protobuf (like valid
+	// UTF-8 strings or syntactically valid metric and label names). It is
+	// recommended to sort labels lexicographically. (Implementers may find
+	// LabelPairSorter useful for that.) Callers of Write should still make
+	// sure of sorting if they depend on it.
 	Write(*dto.Metric) error
+	// TODO(beorn7): The original rationale of passing in a pre-allocated
+	// dto.Metric protobuf to save allocations has disappeared. The
+	// signature of this method should be changed to "Write() (*dto.Metric,
+	// error)".
 }
 
 // Opts bundles the options for creating most Metric types. Each metric

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

@@ -28,7 +28,7 @@ type processCollector struct {
 // NewProcessCollector returns a collector which exports the current state of
 // process metrics including cpu, memory and file descriptor usage as well as
 // the process start time for the given process id under the given namespace.
-func NewProcessCollector(pid int, namespace string) *processCollector {
+func NewProcessCollector(pid int, namespace string) Collector {
 	return NewProcessCollectorPIDFn(
 		func() (int, error) { return pid, nil },
 		namespace,
@@ -43,7 +43,7 @@ func NewProcessCollector(pid int, namespace string) *processCollector {
 func NewProcessCollectorPIDFn(
 	pidFn func() (int, error),
 	namespace string,
-) *processCollector {
+) Collector {
 	c := processCollector{
 		pidFn:     pidFn,
 		collectFn: func(chan<- Metric) {},

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

@@ -1,65 +0,0 @@
-// Copyright 2015 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.
-
-// Copyright (c) 2013, The Prometheus 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 prometheus
-
-// Push triggers a metric collection by the default registry and pushes all
-// collected metrics to the Pushgateway specified by url. See the Pushgateway
-// documentation for detailed implications of the job and instance
-// parameter. instance can be left empty. You can use just host:port or ip:port
-// as url, in which case 'http://' is added automatically. You can also include
-// the schema in the URL. However, do not include the '/metrics/jobs/...' part.
-//
-// Note that all previously pushed metrics with the same job and instance will
-// be replaced with the metrics pushed by this call. (It uses HTTP method 'PUT'
-// to push to the Pushgateway.)
-func Push(job, instance, url string) error {
-	return defRegistry.Push(job, instance, url, "PUT")
-}
-
-// PushAdd works like Push, but only previously pushed metrics with the same
-// name (and the same job and instance) will be replaced. (It uses HTTP method
-// 'POST' to push to the Pushgateway.)
-func PushAdd(job, instance, url string) error {
-	return defRegistry.Push(job, instance, url, "POST")
-}
-
-// PushCollectors works like Push, but it does not collect from the default
-// registry. Instead, it collects from the provided collectors. It is a
-// convenient way to push only a few metrics.
-func PushCollectors(job, instance, url string, collectors ...Collector) error {
-	return pushCollectors(job, instance, url, "PUT", collectors...)
-}
-
-// PushAddCollectors works like PushAdd, but it does not collect from the
-// default registry. Instead, it collects from the provided collectors. It is a
-// convenient way to push only a few metrics.
-func PushAddCollectors(job, instance, url string, collectors ...Collector) error {
-	return pushCollectors(job, instance, url, "POST", collectors...)
-}
-
-func pushCollectors(job, instance, url, method string, collectors ...Collector) error {
-	r := newRegistry()
-	for _, collector := range collectors {
-		if _, err := r.Register(collector); err != nil {
-			return err
-		}
-	}
-	return r.Push(job, instance, url, method)
-}

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

@@ -53,8 +53,8 @@ type Summary interface {
 	Observe(float64)
 }
 
-var (
 // DefObjectives are the default Summary quantile values.
+var (
 	DefObjectives = map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001}
 
 	errQuantileLabelNotAllowed = fmt.Errorf(
@@ -139,11 +139,11 @@ type SummaryOpts struct {
 	BufCap uint32
 }
 
-// TODO: Great fuck-up with the sliding-window decay algorithm... The Merge
-// method of perk/quantile is actually not working as advertised - and it might
-// be unfixable, as the underlying algorithm is apparently not capable of
-// merging summaries in the first place. To avoid using Merge, we are currently
-// adding observations to _each_ age bucket, i.e. the effort to add a sample is
+// Great fuck-up with the sliding-window decay algorithm... The Merge method of
+// perk/quantile is actually not working as advertised - and it might be
+// unfixable, as the underlying algorithm is apparently not capable of merging
+// summaries in the first place. To avoid using Merge, we are currently adding
+// observations to _each_ age bucket, i.e. the effort to add a sample is
 // essentially multiplied by the number of age buckets. When rotating age
 // buckets, we empty the previous head stream. On scrape time, we simply take
 // the quantiles from the head stream (no merging required). Result: More effort
@@ -227,12 +227,12 @@ func newSummary(desc *Desc, opts SummaryOpts, labelValues ...string) Summary {
 	}
 	sort.Float64s(s.sortedObjectives)
 
-	s.Init(s) // Init self-collection.
+	s.init(s) // Init self-collection.
 	return s
 }
 
 type summary struct {
-	SelfCollector
+	selfCollector
 
 	bufMtx sync.Mutex // Protects hotBuf and hotBufExpTime.
 	mtx    sync.Mutex // Protects every other moving part.
@@ -390,7 +390,7 @@ 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
@@ -404,13 +404,9 @@ func NewSummaryVec(opts SummaryOpts, labelNames []string) *SummaryVec {
 		opts.ConstLabels,
 	)
 	return &SummaryVec{
-		MetricVec: MetricVec{
-			children: map[uint64]Metric{},
-			desc:     desc,
-			newMetric: func(lvs ...string) Metric {
+		MetricVec: newMetricVec(desc, func(lvs ...string) Metric {
 			return newSummary(desc, opts, lvs...)
-			},
-		},
+		}),
 	}
 }
 

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

@@ -56,7 +56,7 @@ func NewUntyped(opts UntypedOpts) Untyped {
 // labels. This is used if you want to count the same thing partitioned by
 // various dimensions. Create instances with NewUntypedVec.
 type UntypedVec struct {
-	MetricVec
+	*MetricVec
 }
 
 // NewUntypedVec creates a new UntypedVec based on the provided UntypedOpts and
@@ -70,13 +70,9 @@ func NewUntypedVec(opts UntypedOpts, labelNames []string) *UntypedVec {
 		opts.ConstLabels,
 	)
 	return &UntypedVec{
-		MetricVec: MetricVec{
-			children: map[uint64]Metric{},
-			desc:     desc,
-			newMetric: func(lvs ...string) Metric {
+		MetricVec: newMetricVec(desc, func(lvs ...string) Metric {
 			return newValue(desc, UntypedValue, 0, lvs...)
-			},
-		},
+		}),
 	}
 }
 

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

@@ -48,7 +48,7 @@ type value struct {
 	// operations.  http://golang.org/pkg/sync/atomic/#pkg-note-BUG
 	valBits uint64
 
-	SelfCollector
+	selfCollector
 
 	desc       *Desc
 	valType    ValueType
@@ -68,7 +68,7 @@ func newValue(desc *Desc, valueType ValueType, val float64, labelValues ...strin
 		valBits:    math.Float64bits(val),
 		labelPairs: makeLabelPairs(desc, labelValues),
 	}
-	result.Init(result)
+	result.init(result)
 	return result
 }
 
@@ -113,7 +113,7 @@ func (v *value) Write(out *dto.Metric) error {
 // library to back the implementations of CounterFunc, GaugeFunc, and
 // UntypedFunc.
 type valueFunc struct {
-	SelfCollector
+	selfCollector
 
 	desc       *Desc
 	valType    ValueType
@@ -134,7 +134,7 @@ func newValueFunc(desc *Desc, valueType ValueType, function func() float64) *val
 		function:   function,
 		labelPairs: makeLabelPairs(desc, nil),
 	}
-	result.Init(result)
+	result.init(result)
 	return result
 }
 

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

@@ -16,6 +16,8 @@ package prometheus
 import (
 	"fmt"
 	"sync"
+
+	"github.com/prometheus/common/model"
 )
 
 // MetricVec is a Collector to bundle metrics of the same name that
@@ -25,10 +27,31 @@ import (
 // provided in this package.
 type MetricVec struct {
 	mtx      sync.RWMutex // Protects the children.
-	children map[uint64]Metric
+	children map[uint64][]metricWithLabelValues
 	desc     *Desc
 
 	newMetric   func(labelValues ...string) Metric
+	hashAdd     func(h uint64, s string) uint64 // replace hash function for testing collision handling
+	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{
+		children:    map[uint64][]metricWithLabelValues{},
+		desc:        desc,
+		newMetric:   newMetric,
+		hashAdd:     hashAdd,
+		hashAddByte: hashAddByte,
+	}
+}
+
+// metricWithLabelValues provides the metric and its label values for
+// disambiguation on hash collision.
+type metricWithLabelValues struct {
+	values []string
+	metric Metric
 }
 
 // Describe implements Collector. The length of the returned slice
@@ -42,8 +65,10 @@ func (m *MetricVec) Collect(ch chan<- Metric) {
 	m.mtx.RLock()
 	defer m.mtx.RUnlock()
 
-	for _, metric := range m.children {
-		ch <- metric
+	for _, metrics := range m.children {
+		for _, metric := range metrics {
+			ch <- metric.metric
+		}
 	}
 }
 
@@ -77,16 +102,7 @@ func (m *MetricVec) GetMetricWithLabelValues(lvs ...string) (Metric, error) {
 		return nil, err
 	}
 
-	m.mtx.RLock()
-	metric, ok := m.children[h]
-	m.mtx.RUnlock()
-	if ok {
-		return metric, nil
-	}
-
-	m.mtx.Lock()
-	defer m.mtx.Unlock()
-	return m.getOrCreateMetric(h, lvs...), nil
+	return m.getOrCreateMetricWithLabelValues(h, lvs), nil
 }
 
 // GetMetricWith returns the Metric for the given Labels map (the label names
@@ -107,20 +123,7 @@ func (m *MetricVec) GetMetricWith(labels Labels) (Metric, error) {
 		return nil, err
 	}
 
-	m.mtx.RLock()
-	metric, ok := m.children[h]
-	m.mtx.RUnlock()
-	if ok {
-		return metric, nil
-	}
-
-	lvs := make([]string, len(labels))
-	for i, label := range m.desc.variableLabels {
-		lvs[i] = labels[label]
-	}
-	m.mtx.Lock()
-	defer m.mtx.Unlock()
-	return m.getOrCreateMetric(h, lvs...), nil
+	return m.getOrCreateMetricWithLabels(h, labels), nil
 }
 
 // WithLabelValues works as GetMetricWithLabelValues, but panics if an error
@@ -168,11 +171,7 @@ func (m *MetricVec) DeleteLabelValues(lvs ...string) bool {
 	if err != nil {
 		return false
 	}
-	if _, ok := m.children[h]; !ok {
-		return false
-	}
-	delete(m.children, h)
-	return true
+	return m.deleteByHashWithLabelValues(h, lvs)
 }
 
 // Delete deletes the metric where the variable labels are the same as those
@@ -193,10 +192,50 @@ func (m *MetricVec) Delete(labels Labels) bool {
 	if err != nil {
 		return false
 	}
-	if _, ok := m.children[h]; !ok {
+
+	return m.deleteByHashWithLabels(h, labels)
+}
+
+// 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 {
+	metrics, ok := m.children[h]
+	if !ok {
 		return false
 	}
+
+	i := m.findMetricWithLabelValues(metrics, lvs)
+	if i >= len(metrics) {
+		return false
+	}
+
+	if len(metrics) > 1 {
+		m.children[h] = append(metrics[:i], metrics[i+1:]...)
+	} else {
 		delete(m.children, h)
+	}
+	return true
+}
+
+// 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 {
+	metrics, ok := m.children[h]
+	if !ok {
+		return false
+	}
+	i := m.findMetricWithLabels(metrics, labels)
+	if i >= len(metrics) {
+		return false
+	}
+
+	if len(metrics) > 1 {
+		m.children[h] = append(metrics[:i], metrics[i+1:]...)
+	} else {
+		delete(m.children, h)
+	}
 	return true
 }
 
@@ -216,7 +255,8 @@ func (m *MetricVec) hashLabelValues(vals []string) (uint64, error) {
 	}
 	h := hashNew()
 	for _, val := range vals {
-		h = hashAdd(h, val)
+		h = m.hashAdd(h, val)
+		h = m.hashAddByte(h, model.SeparatorByte)
 	}
 	return h, nil
 }
@@ -231,19 +271,134 @@ func (m *MetricVec) hashLabels(labels Labels) (uint64, error) {
 		if !ok {
 			return 0, fmt.Errorf("label name %q missing in label map", label)
 		}
-		h = hashAdd(h, val)
+		h = m.hashAdd(h, val)
+		h = m.hashAddByte(h, model.SeparatorByte)
 	}
 	return h, nil
 }
 
-func (m *MetricVec) getOrCreateMetric(hash uint64, labelValues ...string) Metric {
-	metric, ok := m.children[hash]
+// getOrCreateMetricWithLabelValues retrieves the metric by hash and label value
+// or creates it and returns the new one.
+//
+// This function holds the mutex.
+func (m *MetricVec) getOrCreateMetricWithLabelValues(hash uint64, lvs []string) Metric {
+	m.mtx.RLock()
+	metric, ok := m.getMetricWithLabelValues(hash, lvs)
+	m.mtx.RUnlock()
+	if ok {
+		return metric
+	}
+
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	metric, ok = m.getMetricWithLabelValues(hash, lvs)
 	if !ok {
-		// Copy labelValues. Otherwise, they would be allocated even if we don't go
-		// down this code path.
-		copiedLabelValues := append(make([]string, 0, len(labelValues)), labelValues...)
-		metric = m.newMetric(copiedLabelValues...)
-		m.children[hash] = metric
+		// Copy to avoid allocation in case wo don't go down this code path.
+		copiedLVs := make([]string, len(lvs))
+		copy(copiedLVs, lvs)
+		metric = m.newMetric(copiedLVs...)
+		m.children[hash] = append(m.children[hash], metricWithLabelValues{values: copiedLVs, metric: metric})
 	}
 	return metric
 }
+
+// getOrCreateMetricWithLabelValues retrieves the metric by hash and label value
+// or creates it and returns the new one.
+//
+// This function holds the mutex.
+func (m *MetricVec) getOrCreateMetricWithLabels(hash uint64, labels Labels) Metric {
+	m.mtx.RLock()
+	metric, ok := m.getMetricWithLabels(hash, labels)
+	m.mtx.RUnlock()
+	if ok {
+		return metric
+	}
+
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	metric, ok = m.getMetricWithLabels(hash, labels)
+	if !ok {
+		lvs := m.extractLabelValues(labels)
+		metric = m.newMetric(lvs...)
+		m.children[hash] = append(m.children[hash], metricWithLabelValues{values: lvs, metric: metric})
+	}
+	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) {
+	metrics, ok := m.children[h]
+	if ok {
+		if i := m.findMetricWithLabelValues(metrics, lvs); i < len(metrics) {
+			return metrics[i].metric, true
+		}
+	}
+	return nil, false
+}
+
+// getMetricWithLabels 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) {
+	metrics, ok := m.children[h]
+	if ok {
+		if i := m.findMetricWithLabels(metrics, labels); i < len(metrics) {
+			return metrics[i].metric, true
+		}
+	}
+	return nil, false
+}
+
+// findMetricWithLabelValues returns the index of the matching metric or
+// len(metrics) if not found.
+func (m *MetricVec) findMetricWithLabelValues(metrics []metricWithLabelValues, lvs []string) int {
+	for i, metric := range metrics {
+		if m.matchLabelValues(metric.values, lvs) {
+			return i
+		}
+	}
+	return len(metrics)
+}
+
+// findMetricWithLabels returns the index of the matching metric or len(metrics)
+// if not found.
+func (m *MetricVec) findMetricWithLabels(metrics []metricWithLabelValues, labels Labels) int {
+	for i, metric := range metrics {
+		if m.matchLabels(metric.values, labels) {
+			return i
+		}
+	}
+	return len(metrics)
+}
+
+func (m *MetricVec) matchLabelValues(values []string, lvs []string) bool {
+	if len(values) != len(lvs) {
+		return false
+	}
+	for i, v := range values {
+		if v != lvs[i] {
+			return false
+		}
+	}
+	return true
+}
+
+func (m *MetricVec) matchLabels(values []string, labels Labels) bool {
+	if len(labels) != len(values) {
+		return false
+	}
+	for i, k := range m.desc.variableLabels {
+		if values[i] != labels[k] {
+			return false
+		}
+	}
+	return true
+}
+
+func (m *MetricVec) extractLabelValues(labels Labels) []string {
+	labelValues := make([]string, len(labels))
+	for i, k := range m.desc.variableLabels {
+		labelValues[i] = labels[k]
+	}
+	return labelValues
+}

vendor/github.com/prometheus/common/expfmt/decode.go

@@ -46,10 +46,7 @@ func ResponseFormat(h http.Header) Format {
 		return FmtUnknown
 	}
 
-	const (
-		textType = "text/plain"
-		jsonType = "application/json"
-	)
+	const textType = "text/plain"
 
 	switch mediatype {
 	case ProtoType:
@@ -66,22 +63,6 @@ func ResponseFormat(h http.Header) Format {
 			return FmtUnknown
 		}
 		return FmtText
-
-	case jsonType:
-		var prometheusAPIVersion string
-
-		if params["schema"] == "prometheus/telemetry" && params["version"] != "" {
-			prometheusAPIVersion = params["version"]
-		} else {
-			prometheusAPIVersion = h.Get("X-Prometheus-API-Version")
-		}
-
-		switch prometheusAPIVersion {
-		case "0.0.2", "":
-			return fmtJSON2
-		default:
-			return FmtUnknown
-		}
 	}
 
 	return FmtUnknown
@@ -93,8 +74,6 @@ func NewDecoder(r io.Reader, format Format) Decoder {
 	switch format {
 	case FmtProtoDelim:
 		return &protoDecoder{r: r}
-	case fmtJSON2:
-		return newJSON2Decoder(r)
 	}
 	return &textDecoder{r: r}
 }
@@ -132,7 +111,7 @@ func (d *protoDecoder) Decode(v *dto.MetricFamily) error {
 	return nil
 }
 
-// textDecoder implements the Decoder interface for the text protcol.
+// textDecoder implements the Decoder interface for the text protocol.
 type textDecoder struct {
 	r    io.Reader
 	p    TextParser

vendor/github.com/prometheus/common/expfmt/expfmt.go

@@ -29,9 +29,6 @@ const (
 	FmtProtoDelim   Format = ProtoFmt + ` encoding=delimited`
 	FmtProtoText    Format = ProtoFmt + ` encoding=text`
 	FmtProtoCompact Format = ProtoFmt + ` encoding=compact-text`
-
-	// fmtJSON2 is hidden as it is deprecated.
-	fmtJSON2 Format = `application/json; version=0.0.2`
 )
 
 const (

vendor/github.com/prometheus/common/expfmt/fuzz.go

@@ -20,8 +20,8 @@ import "bytes"
 
 // Fuzz text metric parser with with github.com/dvyukov/go-fuzz:
 //
-//     go-fuzz-build github.com/prometheus/client_golang/text
-//     go-fuzz -bin text-fuzz.zip -workdir fuzz
+//     go-fuzz-build github.com/prometheus/common/expfmt
+//     go-fuzz -bin expfmt-fuzz.zip -workdir fuzz
 //
 // Further input samples should go in the folder fuzz/corpus.
 func Fuzz(in []byte) int {

vendor/github.com/prometheus/common/expfmt/json_decode.go

@@ -1,174 +0,0 @@
-// Copyright 2015 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 expfmt
-
-import (
-	"encoding/json"
-	"fmt"
-	"io"
-	"sort"
-
-	"github.com/golang/protobuf/proto"
-	dto "github.com/prometheus/client_model/go"
-
-	"github.com/prometheus/common/model"
-)
-
-type json2Decoder struct {
-	dec  *json.Decoder
-	fams []*dto.MetricFamily
-}
-
-func newJSON2Decoder(r io.Reader) Decoder {
-	return &json2Decoder{
-		dec: json.NewDecoder(r),
-	}
-}
-
-type histogram002 struct {
-	Labels model.LabelSet     `json:"labels"`
-	Values map[string]float64 `json:"value"`
-}
-
-type counter002 struct {
-	Labels model.LabelSet `json:"labels"`
-	Value  float64        `json:"value"`
-}
-
-func protoLabelSet(base, ext model.LabelSet) ([]*dto.LabelPair, error) {
-	labels := base.Clone().Merge(ext)
-	delete(labels, model.MetricNameLabel)
-
-	names := make([]string, 0, len(labels))
-	for ln := range labels {
-		names = append(names, string(ln))
-	}
-	sort.Strings(names)
-
-	pairs := make([]*dto.LabelPair, 0, len(labels))
-
-	for _, ln := range names {
-		if !model.LabelNameRE.MatchString(ln) {
-			return nil, fmt.Errorf("invalid label name %q", ln)
-		}
-		lv := labels[model.LabelName(ln)]
-
-		pairs = append(pairs, &dto.LabelPair{
-			Name:  proto.String(ln),
-			Value: proto.String(string(lv)),
-		})
-	}
-
-	return pairs, nil
-}
-
-func (d *json2Decoder) more() error {
-	var entities []struct {
-		BaseLabels model.LabelSet `json:"baseLabels"`
-		Docstring  string         `json:"docstring"`
-		Metric     struct {
-			Type   string          `json:"type"`
-			Values json.RawMessage `json:"value"`
-		} `json:"metric"`
-	}
-
-	if err := d.dec.Decode(&entities); err != nil {
-		return err
-	}
-	for _, e := range entities {
-		f := &dto.MetricFamily{
-			Name:   proto.String(string(e.BaseLabels[model.MetricNameLabel])),
-			Help:   proto.String(e.Docstring),
-			Type:   dto.MetricType_UNTYPED.Enum(),
-			Metric: []*dto.Metric{},
-		}
-
-		d.fams = append(d.fams, f)
-
-		switch e.Metric.Type {
-		case "counter", "gauge":
-			var values []counter002
-
-			if err := json.Unmarshal(e.Metric.Values, &values); err != nil {
-				return fmt.Errorf("could not extract %s value: %s", e.Metric.Type, err)
-			}
-
-			for _, ctr := range values {
-				labels, err := protoLabelSet(e.BaseLabels, ctr.Labels)
-				if err != nil {
-					return err
-				}
-				f.Metric = append(f.Metric, &dto.Metric{
-					Label: labels,
-					Untyped: &dto.Untyped{
-						Value: proto.Float64(ctr.Value),
-					},
-				})
-			}
-
-		case "histogram":
-			var values []histogram002
-
-			if err := json.Unmarshal(e.Metric.Values, &values); err != nil {
-				return fmt.Errorf("could not extract %s value: %s", e.Metric.Type, err)
-			}
-
-			for _, hist := range values {
-				quants := make([]string, 0, len(values))
-				for q := range hist.Values {
-					quants = append(quants, q)
-				}
-
-				sort.Strings(quants)
-
-				for _, q := range quants {
-					value := hist.Values[q]
-					// The correct label is "quantile" but to not break old expressions
-					// this remains "percentile"
-					hist.Labels["percentile"] = model.LabelValue(q)
-
-					labels, err := protoLabelSet(e.BaseLabels, hist.Labels)
-					if err != nil {
-						return err
-					}
-
-					f.Metric = append(f.Metric, &dto.Metric{
-						Label: labels,
-						Untyped: &dto.Untyped{
-							Value: proto.Float64(value),
-						},
-					})
-				}
-			}
-
-		default:
-			return fmt.Errorf("unknown metric type %q", e.Metric.Type)
-		}
-	}
-	return nil
-}
-
-// Decode implements the Decoder interface.
-func (d *json2Decoder) Decode(v *dto.MetricFamily) error {
-	if len(d.fams) == 0 {
-		if err := d.more(); err != nil {
-			return err
-		}
-	}
-
-	*v = *d.fams[0]
-	d.fams = d.fams[1:]
-
-	return nil
-}

vendor/github.com/prometheus/common/expfmt/text_create.go

@@ -14,7 +14,6 @@
 package expfmt
 
 import (
-	"bytes"
 	"fmt"
 	"io"
 	"math"
@@ -26,9 +25,12 @@ import (
 
 // MetricFamilyToText converts a MetricFamily proto message into text format and
 // writes the resulting lines to 'out'. It returns the number of bytes written
-// and any error encountered.  This function does not perform checks on the
-// content of the metric and label names, i.e. invalid metric or label names
+// and any error encountered. The output will have the same order as the input,
+// no further sorting is performed. Furthermore, this function assumes the input
+// is already sanitized and does not perform any sanity checks. If the input
+// contains duplicate metrics or invalid metric or label names, the conversion
 // will result in invalid text format output.
+//
 // This method fulfills the type 'prometheus.encoder'.
 func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (int, error) {
 	var written int
@@ -285,21 +287,17 @@ func labelPairsToText(
 	return written, nil
 }
 
+var (
+	escape                = strings.NewReplacer("\\", `\\`, "\n", `\n`)
+	escapeWithDoubleQuote = strings.NewReplacer("\\", `\\`, "\n", `\n`, "\"", `\"`)
+)
+
 // escapeString replaces '\' by '\\', new line character by '\n', and - if
 // includeDoubleQuote is true - '"' by '\"'.
 func escapeString(v string, includeDoubleQuote bool) string {
-	result := bytes.NewBuffer(make([]byte, 0, len(v)))
-	for _, c := range v {
-		switch {
-		case c == '\\':
-			result.WriteString(`\\`)
-		case includeDoubleQuote && c == '"':
-			result.WriteString(`\"`)
-		case c == '\n':
-			result.WriteString(`\n`)
-		default:
-			result.WriteRune(c)
+	if includeDoubleQuote {
+		return escapeWithDoubleQuote.Replace(v)
 	}
-	}
-	return result.String()
+
+	return escape.Replace(v)
 }

vendor/github.com/prometheus/common/expfmt/text_parse.go

@@ -47,7 +47,7 @@ func (e ParseError) Error() string {
 }
 
 // TextParser is used to parse the simple and flat text-based exchange format. Its
-// nil value is ready to use.
+// zero value is ready to use.
 type TextParser struct {
 	metricFamiliesByName map[string]*dto.MetricFamily
 	buf                  *bufio.Reader // Where the parsed input is read through.
@@ -108,6 +108,13 @@ func (p *TextParser) TextToMetricFamilies(in io.Reader) (map[string]*dto.MetricF
 			delete(p.metricFamiliesByName, k)
 		}
 	}
+	// If p.err is io.EOF now, we have run into a premature end of the input
+	// stream. Turn this error into something nicer and more
+	// meaningful. (io.EOF is often used as a signal for the legitimate end
+	// of an input stream.)
+	if p.err == io.EOF {
+		p.parseError("unexpected end of input stream")
+	}
 	return p.metricFamiliesByName, p.err
 }
 

vendor/github.com/prometheus/common/log/eventlog_formatter.go

@@ -0,0 +1,89 @@
+// Copyright 2015 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 windows
+
+package log
+
+import (
+	"fmt"
+	"os"
+
+	"golang.org/x/sys/windows/svc/eventlog"
+
+	"github.com/Sirupsen/logrus"
+)
+
+func init() {
+	setEventlogFormatter = func(name string, debugAsInfo bool) error {
+		if name == "" {
+			return fmt.Errorf("missing name parameter")
+		}
+
+		fmter, err := newEventlogger(name, debugAsInfo, origLogger.Formatter)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "error creating eventlog formatter: %v\n", err)
+			origLogger.Errorf("can't connect logger to eventlog: %v", err)
+			return err
+		}
+		origLogger.Formatter = fmter
+		return nil
+	}
+}
+
+type eventlogger struct {
+	log         *eventlog.Log
+	debugAsInfo bool
+	wrap        logrus.Formatter
+}
+
+func newEventlogger(name string, debugAsInfo bool, fmter logrus.Formatter) (*eventlogger, error) {
+	logHandle, err := eventlog.Open(name)
+	if err != nil {
+		return nil, err
+	}
+	return &eventlogger{log: logHandle, debugAsInfo: debugAsInfo, wrap: fmter}, nil
+}
+
+func (s *eventlogger) Format(e *logrus.Entry) ([]byte, error) {
+	data, err := s.wrap.Format(e)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "eventlogger: can't format entry: %v\n", err)
+		return data, err
+	}
+
+	switch e.Level {
+	case logrus.PanicLevel:
+		fallthrough
+	case logrus.FatalLevel:
+		fallthrough
+	case logrus.ErrorLevel:
+		err = s.log.Error(102, e.Message)
+	case logrus.WarnLevel:
+		err = s.log.Warning(101, e.Message)
+	case logrus.InfoLevel:
+		err = s.log.Info(100, e.Message)
+	case logrus.DebugLevel:
+		if s.debugAsInfo {
+			err = s.log.Info(100, e.Message)
+		}
+	default:
+		err = s.log.Info(100, e.Message)
+	}
+
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "eventlogger: can't send log to eventlog: %v\n", err)
+	}
+
+	return data, err
+}

vendor/github.com/prometheus/common/log/log.go

@@ -16,19 +16,23 @@ package log
 import (
 	"flag"
 	"fmt"
+	"io"
+	"io/ioutil"
+	"log"
 	"net/url"
 	"os"
 	"runtime"
+	"strconv"
 	"strings"
 
 	"github.com/Sirupsen/logrus"
 )
 
-type levelFlag struct{}
+type levelFlag string
 
 // String implements flag.Value.
 func (f levelFlag) String() string {
-	return origLogger.Level.String()
+	return fmt.Sprintf("%q", string(f))
 }
 
 // Set implements flag.Value.
@@ -44,20 +48,23 @@ func (f levelFlag) Set(level string) error {
 // setSyslogFormatter is nil if the target architecture does not support syslog.
 var setSyslogFormatter func(string, string) error
 
+// setEventlogFormatter is nil if the target OS does not support Eventlog (i.e., is not Windows).
+var setEventlogFormatter func(string, bool) error
+
 func setJSONFormatter() {
 	origLogger.Formatter = &logrus.JSONFormatter{}
 }
 
-type logFormatFlag struct{ uri string }
+type logFormatFlag url.URL
 
 // String implements flag.Value.
 func (f logFormatFlag) String() string {
-	return f.uri
+	u := url.URL(f)
+	return fmt.Sprintf("%q", u.String())
 }
 
 // Set implements flag.Value.
 func (f logFormatFlag) Set(format string) error {
-	f.uri = format
 	u, err := url.Parse(format)
 	if err != nil {
 		return err
@@ -78,24 +85,49 @@ func (f logFormatFlag) Set(format string) error {
 		appname := u.Query().Get("appname")
 		facility := u.Query().Get("local")
 		return setSyslogFormatter(appname, facility)
+	case "eventlog":
+		if setEventlogFormatter == nil {
+			return fmt.Errorf("system does not support eventlog")
+		}
+		name := u.Query().Get("name")
+		debugAsInfo := false
+		debugAsInfoRaw := u.Query().Get("debugAsInfo")
+		if parsedDebugAsInfo, err := strconv.ParseBool(debugAsInfoRaw); err == nil {
+			debugAsInfo = parsedDebugAsInfo
+		}
+		return setEventlogFormatter(name, debugAsInfo)
 	case "stdout":
 		origLogger.Out = os.Stdout
 	case "stderr":
 		origLogger.Out = os.Stderr
-
 	default:
-		return fmt.Errorf("unsupported logger %s", u.Opaque)
+		return fmt.Errorf("unsupported logger %q", u.Opaque)
 	}
 	return nil
 }
 
 func init() {
-	// In order for these flags to take effect, the user of the package must call
-	// flag.Parse() before logging anything.
-	flag.Var(levelFlag{}, "log.level", "Only log messages with the given severity or above. Valid levels: [debug, info, warn, error, fatal].")
-	flag.Var(logFormatFlag{}, "log.format", "If set use a syslog logger or JSON logging. Example: logger:syslog?appname=bob&local=7 or logger:stdout?json=true. Defaults to stderr.")
+	AddFlags(flag.CommandLine)
 }
 
+// AddFlags adds the flags used by this package to the given FlagSet. That's
+// useful if working with a custom FlagSet. The init function of this package
+// adds the flags to flag.CommandLine anyway. Thus, it's usually enough to call
+// flag.Parse() to make the logging flags take effect.
+func AddFlags(fs *flag.FlagSet) {
+	fs.Var(
+		levelFlag(origLogger.Level.String()),
+		"log.level",
+		"Only log messages with the given severity or above. Valid levels: [debug, info, warn, error, fatal]",
+	)
+	fs.Var(
+		logFormatFlag(url.URL{Scheme: "logger", Opaque: "stderr"}),
+		"log.format",
+		`Set the log target and format. Example: "logger:syslog?appname=bob&local=7" or "logger:stdout?json=true"`,
+	)
+}
+
+// Logger is the interface for loggers used in the Prometheus components.
 type Logger interface {
 	Debug(...interface{})
 	Debugln(...interface{})
@@ -220,10 +252,26 @@ func (l logger) sourced() *logrus.Entry {
 var origLogger = logrus.New()
 var baseLogger = logger{entry: logrus.NewEntry(origLogger)}
 
+// Base returns the default Logger logging to
 func Base() Logger {
 	return baseLogger
 }
 
+// NewLogger returns a new Logger logging to out.
+func NewLogger(w io.Writer) Logger {
+	l := logrus.New()
+	l.Out = w
+	return logger{entry: logrus.NewEntry(l)}
+}
+
+// NewNopLogger returns a logger that discards all log messages.
+func NewNopLogger() Logger {
+	l := logrus.New()
+	l.Out = ioutil.Discard
+	return logger{entry: logrus.NewEntry(l)}
+}
+
+// With adds a field to the logger.
 func With(key string, value interface{}) Logger {
 	return baseLogger.With(key, value)
 }
@@ -233,7 +281,7 @@ func Debug(args ...interface{}) {
 	baseLogger.sourced().Debug(args...)
 }
 
-// Debug logs a message at level Debug on the standard logger.
+// Debugln logs a message at level Debug on the standard logger.
 func Debugln(args ...interface{}) {
 	baseLogger.sourced().Debugln(args...)
 }
@@ -248,7 +296,7 @@ func Info(args ...interface{}) {
 	baseLogger.sourced().Info(args...)
 }
 
-// Info logs a message at level Info on the standard logger.
+// Infoln logs a message at level Info on the standard logger.
 func Infoln(args ...interface{}) {
 	baseLogger.sourced().Infoln(args...)
 }
@@ -263,7 +311,7 @@ func Warn(args ...interface{}) {
 	baseLogger.sourced().Warn(args...)
 }
 
-// Warn logs a message at level Warn on the standard logger.
+// Warnln logs a message at level Warn on the standard logger.
 func Warnln(args ...interface{}) {
 	baseLogger.sourced().Warnln(args...)
 }
@@ -278,7 +326,7 @@ func Error(args ...interface{}) {
 	baseLogger.sourced().Error(args...)
 }
 
-// Error logs a message at level Error on the standard logger.
+// Errorln logs a message at level Error on the standard logger.
 func Errorln(args ...interface{}) {
 	baseLogger.sourced().Errorln(args...)
 }
@@ -293,7 +341,7 @@ func Fatal(args ...interface{}) {
 	baseLogger.sourced().Fatal(args...)
 }
 
-// Fatal logs a message at level Fatal on the standard logger.
+// Fatalln logs a message at level Fatal on the standard logger.
 func Fatalln(args ...interface{}) {
 	baseLogger.sourced().Fatalln(args...)
 }
@@ -302,3 +350,16 @@ func Fatalln(args ...interface{}) {
 func Fatalf(format string, args ...interface{}) {
 	baseLogger.sourced().Fatalf(format, args...)
 }
+
+type errorLogWriter struct{}
+
+func (errorLogWriter) Write(b []byte) (int, error) {
+	baseLogger.sourced().Error(string(b))
+	return len(b), nil
+}
+
+// NewErrorLogger returns a log.Logger that is meant to be used
+// in the ErrorLog field of an http.Server to log HTTP server errors.
+func NewErrorLogger() *log.Logger {
+	return log.New(&errorLogWriter{}, "", 0)
+}

vendor/github.com/prometheus/common/model/labels.go

@@ -80,14 +80,18 @@ const (
 	QuantileLabel = "quantile"
 )
 
-// LabelNameRE is a regular expression matching valid label names.
+// LabelNameRE is a regular expression matching valid label names. Note that the
+// IsValid method of LabelName performs the same check but faster than a match
+// with this regular expression.
 var LabelNameRE = regexp.MustCompile("^[a-zA-Z_][a-zA-Z0-9_]*$")
 
 // A LabelName is a key for a LabelSet or Metric.  It has a value associated
 // therewith.
 type LabelName string
 
-// IsValid is true iff the label name matches the pattern of LabelNameRE.
+// IsValid is true iff the label name matches the pattern of LabelNameRE. This
+// method, however, does not use LabelNameRE for the check but a much faster
+// hardcoded implementation.
 func (ln LabelName) IsValid() bool {
 	if len(ln) == 0 {
 		return false
@@ -106,7 +110,7 @@ func (ln *LabelName) UnmarshalYAML(unmarshal func(interface{}) error) error {
 	if err := unmarshal(&s); err != nil {
 		return err
 	}
-	if !LabelNameRE.MatchString(s) {
+	if !LabelName(s).IsValid() {
 		return fmt.Errorf("%q is not a valid label name", s)
 	}
 	*ln = LabelName(s)
@@ -119,7 +123,7 @@ func (ln *LabelName) UnmarshalJSON(b []byte) error {
 	if err := json.Unmarshal(b, &s); err != nil {
 		return err
 	}
-	if !LabelNameRE.MatchString(s) {
+	if !LabelName(s).IsValid() {
 		return fmt.Errorf("%q is not a valid label name", s)
 	}
 	*ln = LabelName(s)

vendor/github.com/prometheus/common/model/labelset.go

@@ -160,7 +160,7 @@ func (l *LabelSet) UnmarshalJSON(b []byte) error {
 	// LabelName as a string and does not call its UnmarshalJSON method.
 	// Thus, we have to replicate the behavior here.
 	for ln := range m {
-		if !LabelNameRE.MatchString(string(ln)) {
+		if !ln.IsValid() {
 			return fmt.Errorf("%q is not a valid label name", ln)
 		}
 	}

vendor/github.com/prometheus/common/model/metric.go

@@ -22,7 +22,10 @@ import (
 
 var (
 	separator = []byte{0}
-	MetricNameRE = regexp.MustCompile(`^[a-zA-Z_][a-zA-Z0-9_:]*$`)
+	// MetricNameRE is a regular expression matching valid metric
+	// names. Note that the IsValidMetricName function performs the same
+	// check but faster than a match with this regular expression.
+	MetricNameRE = regexp.MustCompile(`^[a-zA-Z_:][a-zA-Z0-9_:]*$`)
 )
 
 // A Metric is similar to a LabelSet, but the key difference is that a Metric is
@@ -85,6 +88,8 @@ func (m Metric) FastFingerprint() Fingerprint {
 }
 
 // IsValidMetricName returns true iff name matches the pattern of MetricNameRE.
+// This function, however, does not use MetricNameRE for the check but a much
+// faster hardcoded implementation.
 func IsValidMetricName(n LabelValue) bool {
 	if len(n) == 0 {
 		return false

vendor/github.com/prometheus/common/model/model.go

@@ -12,5 +12,5 @@
 // limitations under the License.
 
 // Package model contains common data structures that are shared across
-// Prometheus componenets and libraries.
+// Prometheus components and libraries.
 package model

vendor/github.com/prometheus/common/model/signature.go

@@ -98,7 +98,7 @@ func labelSetToFastFingerprint(ls LabelSet) Fingerprint {
 // specified LabelNames into the signature calculation. The labels passed in
 // will be sorted by this function.
 func SignatureForLabels(m Metric, labels ...LabelName) uint64 {
-	if len(m) == 0 || len(labels) == 0 {
+	if len(labels) == 0 {
 		return emptyLabelSignature
 	}
 

vendor/github.com/prometheus/common/model/time.go

@@ -163,51 +163,70 @@ func (t *Time) UnmarshalJSON(b []byte) error {
 // This type should not propagate beyond the scope of input/output processing.
 type Duration time.Duration
 
+var durationRE = regexp.MustCompile("^([0-9]+)(y|w|d|h|m|s|ms)$")
+
 // StringToDuration parses a string into a time.Duration, assuming that a year
-// a day always has 24h.
+// always has 365d, a week always has 7d, and a day always has 24h.
 func ParseDuration(durationStr string) (Duration, error) {
 	matches := durationRE.FindStringSubmatch(durationStr)
 	if len(matches) != 3 {
 		return 0, fmt.Errorf("not a valid duration string: %q", durationStr)
 	}
-	durSeconds, _ := strconv.Atoi(matches[1])
-	dur := time.Duration(durSeconds) * time.Second
-	unit := matches[2]
-	switch unit {
+	var (
+		n, _ = strconv.Atoi(matches[1])
+		dur  = time.Duration(n) * time.Millisecond
+	)
+	switch unit := matches[2]; unit {
+	case "y":
+		dur *= 1000 * 60 * 60 * 24 * 365
+	case "w":
+		dur *= 1000 * 60 * 60 * 24 * 7
 	case "d":
-		dur *= 60 * 60 * 24
+		dur *= 1000 * 60 * 60 * 24
 	case "h":
-		dur *= 60 * 60
+		dur *= 1000 * 60 * 60
 	case "m":
-		dur *= 60
+		dur *= 1000 * 60
 	case "s":
-		dur *= 1
+		dur *= 1000
+	case "ms":
+		// Value already correct
 	default:
 		return 0, fmt.Errorf("invalid time unit in duration string: %q", unit)
 	}
 	return Duration(dur), nil
 }
 
-var durationRE = regexp.MustCompile("^([0-9]+)([ywdhms]+)$")
-
 func (d Duration) String() string {
-	seconds := int64(time.Duration(d) / time.Second)
+	var (
+		ms   = int64(time.Duration(d) / time.Millisecond)
+		unit = "ms"
+	)
 	factors := map[string]int64{
-		"d": 60 * 60 * 24,
-		"h": 60 * 60,
-		"m": 60,
-		"s": 1,
+		"y":  1000 * 60 * 60 * 24 * 365,
+		"w":  1000 * 60 * 60 * 24 * 7,
+		"d":  1000 * 60 * 60 * 24,
+		"h":  1000 * 60 * 60,
+		"m":  1000 * 60,
+		"s":  1000,
+		"ms": 1,
 	}
-	unit := "s"
+
 	switch int64(0) {
-	case seconds % factors["d"]:
+	case ms % factors["y"]:
+		unit = "y"
+	case ms % factors["w"]:
+		unit = "w"
+	case ms % factors["d"]:
 		unit = "d"
-	case seconds % factors["h"]:
+	case ms % factors["h"]:
 		unit = "h"
-	case seconds % factors["m"]:
+	case ms % factors["m"]:
 		unit = "m"
+	case ms % factors["s"]:
+		unit = "s"
 	}
-	return fmt.Sprintf("%v%v", seconds/factors[unit], unit)
+	return fmt.Sprintf("%v%v", ms/factors[unit], unit)
 }
 
 // MarshalYAML implements the yaml.Marshaler interface.

vendor/github.com/prometheus/common/model/value.go

@@ -16,11 +16,28 @@ package model
 import (
 	"encoding/json"
 	"fmt"
+	"math"
 	"sort"
 	"strconv"
 	"strings"
 )
 
+var (
+	// ZeroSamplePair is the pseudo zero-value of SamplePair used to signal a
+	// non-existing sample pair. It is a SamplePair with timestamp Earliest and
+	// value 0.0. Note that the natural zero value of SamplePair has a timestamp
+	// of 0, which is possible to appear in a real SamplePair and thus not
+	// suitable to signal a non-existing SamplePair.
+	ZeroSamplePair = SamplePair{Timestamp: Earliest}
+
+	// ZeroSample is the pseudo zero-value of Sample used to signal a
+	// non-existing sample. It is a Sample with timestamp Earliest, value 0.0,
+	// and metric nil. Note that the natural zero value of Sample has a timestamp
+	// of 0, which is possible to appear in a real Sample and thus not suitable
+	// to signal a non-existing Sample.
+	ZeroSample = Sample{Timestamp: Earliest}
+)
+
 // A SampleValue is a representation of a value for a given sample at a given
 // time.
 type SampleValue float64
@@ -43,8 +60,14 @@ func (v *SampleValue) UnmarshalJSON(b []byte) error {
 	return nil
 }
 
+// Equal returns true if the value of v and o is equal or if both are NaN. Note
+// that v==o is false if both are NaN. If you want the conventional float
+// behavior, use == to compare two SampleValues.
 func (v SampleValue) Equal(o SampleValue) bool {
-	return v == o
+	if v == o {
+		return true
+	}
+	return math.IsNaN(float64(v)) && math.IsNaN(float64(o))
 }
 
 func (v SampleValue) String() string {
@@ -77,9 +100,9 @@ func (s *SamplePair) UnmarshalJSON(b []byte) error {
 }
 
 // Equal returns true if this SamplePair and o have equal Values and equal
-// Timestamps.
+// Timestamps. The sematics of Value equality is defined by SampleValue.Equal.
 func (s *SamplePair) Equal(o *SamplePair) bool {
-	return s == o || (s.Value == o.Value && s.Timestamp.Equal(o.Timestamp))
+	return s == o || (s.Value.Equal(o.Value) && s.Timestamp.Equal(o.Timestamp))
 }
 
 func (s SamplePair) String() string {
@@ -93,7 +116,8 @@ type Sample struct {
 	Timestamp Time        `json:"timestamp"`
 }
 
-// Equal compares first the metrics, then the timestamp, then the value.
+// Equal compares first the metrics, then the timestamp, then the value. The
+// sematics of value equality is defined by SampleValue.Equal.
 func (s *Sample) Equal(o *Sample) bool {
 	if s == o {
 		return true
@@ -105,7 +129,7 @@ func (s *Sample) Equal(o *Sample) bool {
 	if !s.Timestamp.Equal(o.Timestamp) {
 		return false
 	}
-	if s.Value != o.Value {
+	if s.Value.Equal(o.Value) {
 		return false
 	}
 

vendor/golang.org/x/sys/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/sys/unix/asm_linux_mips64x.s

@@ -1,29 +1,28 @@
-// Copyright 2009 The Go Authors. All rights reserved.
+// 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 linux
+// +build mips64 mips64le
 // +build !gccgo
 
 #include "textflag.h"
 
 //
-// System call support for 386, FreeBSD
+// System calls for mips64, Linux
 //
 
 // Just jump to package syscall's implementation for all these functions.
 // The runtime may know about them.
 
-TEXT	·Syscall(SB),NOSPLIT,$0-32
+TEXT	·Syscall(SB),NOSPLIT,$0-56
 	JMP	syscall·Syscall(SB)
 
-TEXT	·Syscall6(SB),NOSPLIT,$0-44
+TEXT	·Syscall6(SB),NOSPLIT,$0-80
 	JMP	syscall·Syscall6(SB)
 
-TEXT	·Syscall9(SB),NOSPLIT,$0-56
-	JMP	syscall·Syscall9(SB)
-
-TEXT ·RawSyscall(SB),NOSPLIT,$0-32
+TEXT	·RawSyscall(SB),NOSPLIT,$0-56
 	JMP	syscall·RawSyscall(SB)
 
-TEXT	·RawSyscall6(SB),NOSPLIT,$0-44
+TEXT	·RawSyscall6(SB),NOSPLIT,$0-80
 	JMP	syscall·RawSyscall6(SB)

vendor/golang.org/x/sys/unix/asm_linux_mipsx.s

@@ -0,0 +1,31 @@
+// 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.
+
+// +build linux
+// +build mips mipsle
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System calls for mips, Linux
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT	·Syscall(SB),NOSPLIT,$0-28
+	JMP syscall·Syscall(SB)
+
+TEXT	·Syscall6(SB),NOSPLIT,$0-40
+	JMP syscall·Syscall6(SB)
+
+TEXT	·Syscall9(SB),NOSPLIT,$0-52
+	JMP syscall·Syscall9(SB)
+
+TEXT	·RawSyscall(SB),NOSPLIT,$0-28
+	JMP syscall·RawSyscall(SB)
+
+TEXT	·RawSyscall6(SB),NOSPLIT,$0-40
+	JMP syscall·RawSyscall6(SB)

vendor/golang.org/x/sys/unix/asm_linux_s390x.s

@@ -0,0 +1,28 @@
+// 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.
+
+// +build s390x
+// +build linux
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System calls for s390x, Linux
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-56
+	BR	syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-80
+	BR	syscall·Syscall6(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-56
+	BR	syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
+	BR	syscall·RawSyscall6(SB)

vendor/golang.org/x/sys/unix/bluetooth_linux.go

@@ -0,0 +1,35 @@
+// 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.
+
+// Bluetooth sockets and messages
+
+package unix
+
+// Bluetooth Protocols
+const (
+	BTPROTO_L2CAP  = 0
+	BTPROTO_HCI    = 1
+	BTPROTO_SCO    = 2
+	BTPROTO_RFCOMM = 3
+	BTPROTO_BNEP   = 4
+	BTPROTO_CMTP   = 5
+	BTPROTO_HIDP   = 6
+	BTPROTO_AVDTP  = 7
+)
+
+const (
+	HCI_CHANNEL_RAW     = 0
+	HCI_CHANNEL_USER    = 1
+	HCI_CHANNEL_MONITOR = 2
+	HCI_CHANNEL_CONTROL = 3
+)
+
+// Socketoption Level
+const (
+	SOL_BLUETOOTH = 0x112
+	SOL_HCI       = 0x0
+	SOL_L2CAP     = 0x6
+	SOL_RFCOMM    = 0x12
+	SOL_SCO       = 0x11
+)

vendor/golang.org/x/sys/unix/flock_linux_32bit.go

@@ -1,4 +1,4 @@
-// +build linux,386 linux,arm
+// +build linux,386 linux,arm linux,mips linux,mipsle
 
 // Copyright 2014 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style

vendor/golang.org/x/sys/unix/gccgo_linux_sparc64.go

@@ -0,0 +1,20 @@
+// 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.
+
+// +build gccgo,linux,sparc64
+
+package unix
+
+import "syscall"
+
+//extern sysconf
+func realSysconf(name int) int64
+
+func sysconf(name int) (n int64, err syscall.Errno) {
+	r := realSysconf(name)
+	if r < 0 {
+		return 0, syscall.GetErrno()
+	}
+	return r, 0
+}

vendor/golang.org/x/sys/unix/mkall.sh

@@ -161,7 +161,7 @@ freebsd_arm)
 	mkerrors="$mkerrors"
 	mksyscall="./mksyscall.pl -l32 -arm"
 	mksysnum="curl -s 'http://svn.freebsd.org/base/stable/10/sys/kern/syscalls.master' | ./mksysnum_freebsd.pl"
-	# Let the type of C char be singed for making the bare syscall
+	# Let the type of C char be signed for making the bare syscall
 	# API consistent across over platforms.
 	mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char"
 	;;
@@ -194,7 +194,7 @@ linux_arm64)
 		exit 1
 	fi
 	mksysnum="./mksysnum_linux.pl $unistd_h"
-	# Let the type of C char be singed for making the bare syscall
+	# Let the type of C char be signed for making the bare syscall
 	# API consistent across over platforms.
 	mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char"
 	;;
@@ -212,6 +212,24 @@ linux_ppc64le)
 	mksysnum="./mksysnum_linux.pl $unistd_h"
 	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
 	;;
+linux_s390x)
+	GOOSARCH_in=syscall_linux_s390x.go
+	unistd_h=/usr/include/asm/unistd.h
+	mkerrors="$mkerrors -m64"
+	mksysnum="./mksysnum_linux.pl $unistd_h"
+	# Let the type of C char be signed to make the bare sys
+	# API more consistent between platforms.
+	# This is a deliberate departure from the way the syscall
+	# package generates its version of the types file.
+	mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char"
+	;;
+linux_sparc64)
+	GOOSARCH_in=syscall_linux_sparc64.go
+	unistd_h=/usr/include/sparc64-linux-gnu/asm/unistd.h
+	mkerrors="$mkerrors -m64"
+	mksysnum="./mksysnum_linux.pl $unistd_h"
+	mktypes="GOARCH=$GOARCH go tool cgo -godefs"
+	;;
 netbsd_386)
 	mkerrors="$mkerrors -m32"
 	mksyscall="./mksyscall.pl -l32 -netbsd"
@@ -269,6 +287,6 @@ esac
 	if [ -n "$mksysnum" ]; then echo "$mksysnum |gofmt >zsysnum_$GOOSARCH.go"; fi
 	if [ -n "$mktypes" ]; then
 		echo "echo // +build $GOARCH,$GOOS > ztypes_$GOOSARCH.go";
-		echo "$mktypes types_$GOOS.go | gofmt >>ztypes_$GOOSARCH.go";
+		echo "$mktypes types_$GOOS.go | go run mkpost.go >>ztypes_$GOOSARCH.go";
 	fi
 ) | $run

vendor/golang.org/x/sys/unix/mkerrors.sh

@@ -127,6 +127,8 @@ includes_Linux='
 #include <linux/sched.h>
 #include <linux/wait.h>
 #include <linux/icmpv6.h>
+#include <linux/serial.h>
+#include <linux/can.h>
 #include <net/route.h>
 #include <asm/termbits.h>
 
@@ -141,6 +143,12 @@ includes_Linux='
 #ifndef PTRACE_SETREGS
 #define PTRACE_SETREGS	0xd
 #endif
+
+#ifdef SOL_BLUETOOTH
+// SPARC includes this in /usr/include/sparc64-linux-gnu/bits/socket.h
+// but it is already in bluetooth_linux.go
+#undef SOL_BLUETOOTH
+#endif
 '
 
 includes_NetBSD='
@@ -332,6 +340,7 @@ ccflags="$@"
 		$2 !~ /^(BPF_TIMEVAL)$/ &&
 		$2 ~ /^(BPF|DLT)_/ ||
 		$2 ~ /^CLOCK_/ ||
+		$2 ~ /^CAN_/ ||
 		$2 !~ "WMESGLEN" &&
 		$2 ~ /^W[A-Z0-9]+$/ {printf("\t%s = C.%s\n", $2, $2)}
 		$2 ~ /^__WCOREFLAG$/ {next}

vendor/golang.org/x/sys/unix/mkpost.go

@@ -0,0 +1,62 @@
+// 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.
+
+// +build ignore
+
+// mkpost processes the output of cgo -godefs to
+// modify the generated types. It is used to clean up
+// the sys API in an architecture specific manner.
+//
+// mkpost is run after cgo -godefs by mkall.sh.
+package main
+
+import (
+	"fmt"
+	"go/format"
+	"io/ioutil"
+	"log"
+	"os"
+	"regexp"
+)
+
+func main() {
+	b, err := ioutil.ReadAll(os.Stdin)
+	if err != nil {
+		log.Fatal(err)
+	}
+	s := string(b)
+
+	goarch := os.Getenv("GOARCH")
+	goos := os.Getenv("GOOS")
+	if goarch == "s390x" && goos == "linux" {
+		// Export the types of PtraceRegs fields.
+		re := regexp.MustCompile("ptrace(Psw|Fpregs|Per)")
+		s = re.ReplaceAllString(s, "Ptrace$1")
+
+		// Replace padding fields inserted by cgo with blank identifiers.
+		re = regexp.MustCompile("Pad_cgo[A-Za-z0-9_]*")
+		s = re.ReplaceAllString(s, "_")
+
+		// Replace other unwanted fields with blank identifiers.
+		re = regexp.MustCompile("X_[A-Za-z0-9_]*")
+		s = re.ReplaceAllString(s, "_")
+
+		// Replace the control_regs union with a blank identifier for now.
+		re = regexp.MustCompile("(Control_regs)\\s+\\[0\\]uint64")
+		s = re.ReplaceAllString(s, "_ [0]uint64")
+	}
+
+	// gofmt
+	b, err = format.Source([]byte(s))
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Append this command to the header to show where the new file
+	// came from.
+	re := regexp.MustCompile("(cgo -godefs [a-zA-Z0-9_]+\\.go.*)")
+	b = re.ReplaceAll(b, []byte("$1 | go run mkpost.go"))
+
+	fmt.Printf("%s", b)
+}

vendor/golang.org/x/sys/unix/mksysnum_linux.pl

@@ -23,6 +23,8 @@ package unix
 const(
 EOF
 
+my $offset = 0;
+
 sub fmt {
 	my ($name, $num) = @_;
 	if($num > 999){
@@ -31,13 +33,18 @@ sub fmt {
 		return;
 	}
 	$name =~ y/a-z/A-Z/;
+	$num = $num + $offset;
 	print "	SYS_$name = $num;\n";
 }
 
 my $prev;
 open(GCC, "gcc -E -dD $ARGV[0] |") || die "can't run gcc";
 while(<GCC>){
-	if(/^#define __NR_syscalls\s+/) {
+	if(/^#define __NR_Linux\s+([0-9]+)/){
+		# mips/mips64: extract offset
+		$offset = $1;
+	}
+	elsif(/^#define __NR_syscalls\s+/) {
 		# ignore redefinitions of __NR_syscalls
 	}
 	elsif(/^#define __NR_(\w+)\s+([0-9]+)/){
@@ -51,6 +58,9 @@ while(<GCC>){
 	elsif(/^#define __NR_(\w+)\s+\(\w+\+\s*([0-9]+)\)/){
 		fmt($1, $prev+$2)
 	}
+	elsif(/^#define __NR_(\w+)\s+\(__NR_Linux \+ ([0-9]+)/){
+		fmt($1, $2);
+	}
 }
 
 print <<EOF;

vendor/golang.org/x/sys/unix/sockcmsg_unix.go

@@ -62,7 +62,7 @@ func ParseSocketControlMessage(b []byte) ([]SocketControlMessage, error) {
 
 func socketControlMessageHeaderAndData(b []byte) (*Cmsghdr, []byte, error) {
 	h := (*Cmsghdr)(unsafe.Pointer(&b[0]))
-	if h.Len < SizeofCmsghdr || int(h.Len) > len(b) {
+	if h.Len < SizeofCmsghdr || uint64(h.Len) > uint64(len(b)) {
 		return nil, nil, EINVAL
 	}
 	return h, b[cmsgAlignOf(SizeofCmsghdr):h.Len], nil

vendor/golang.org/x/sys/unix/syscall.go

@@ -68,6 +68,8 @@ func (tv *Timeval) Nano() int64 {
 	return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000
 }
 
+func TimevalToNsec(tv Timeval) int64 { return int64(tv.Sec)*1e9 + int64(tv.Usec)*1e3 }
+
 // use is a no-op, but the compiler cannot see that it is.
 // Calling use(p) ensures that p is kept live until that point.
 //go:noescape

vendor/golang.org/x/sys/unix/syscall_bsd.go

@@ -470,25 +470,11 @@ func Sysctl(name string) (string, error) {
 }
 
 func SysctlArgs(name string, args ...int) (string, error) {
-	mib, err := sysctlmib(name, args...)
+	buf, err := SysctlRaw(name, args...)
 	if err != nil {
 		return "", err
 	}
-
-	// Find size.
-	n := uintptr(0)
-	if err := sysctl(mib, nil, &n, nil, 0); err != nil {
-		return "", err
-	}
-	if n == 0 {
-		return "", nil
-	}
-
-	// Read into buffer of that size.
-	buf := make([]byte, n)
-	if err := sysctl(mib, &buf[0], &n, nil, 0); err != nil {
-		return "", err
-	}
+	n := len(buf)
 
 	// Throw away terminating NUL.
 	if n > 0 && buf[n-1] == '\x00' {