mirror of
https://github.com/prometheus/prometheus.git
synced 2024-12-24 05:04:05 -08:00
chore(discovery): enable new-service-discovery-manager by default and drop legacymanager package
Signed-off-by: machine424 <ayoubmrini424@gmail.com>
This commit is contained in:
machine424
parent
bb232ee109
commit
d18fa62ae9
|
|
@ -58,8 +58,6 @@ import (
|
|||
|
||||
"github.com/prometheus/prometheus/config"
|
||||
"github.com/prometheus/prometheus/discovery"
|
||||
"github.com/prometheus/prometheus/discovery/legacymanager"
|
||||
"github.com/prometheus/prometheus/discovery/targetgroup"
|
||||
"github.com/prometheus/prometheus/model/exemplar"
|
||||
"github.com/prometheus/prometheus/model/histogram"
|
||||
"github.com/prometheus/prometheus/model/labels"
|
||||
|
|
@ -159,7 +157,6 @@ type flagConfig struct {
|
|||
// These options are extracted from featureList
|
||||
// for ease of use.
|
||||
enableExpandExternalLabels bool
|
||||
enableNewSDManager bool
|
||||
enablePerStepStats bool
|
||||
enableAutoGOMAXPROCS bool
|
||||
enableAutoGOMEMLIMIT bool
|
||||
|
|
@ -197,9 +194,6 @@ func (c *flagConfig) setFeatureListOptions(logger log.Logger) error {
|
|||
case "metadata-wal-records":
|
||||
c.scrape.AppendMetadata = true
|
||||
level.Info(logger).Log("msg", "Experimental metadata records in WAL enabled, required for remote write 2.0")
|
||||
case "new-service-discovery-manager":
|
||||
c.enableNewSDManager = true
|
||||
level.Info(logger).Log("msg", "Experimental service discovery manager")
|
||||
case "promql-per-step-stats":
|
||||
c.enablePerStepStats = true
|
||||
level.Info(logger).Log("msg", "Experimental per-step statistics reporting")
|
||||
|
|
@ -463,7 +457,7 @@ func main() {
|
|||
a.Flag("scrape.discovery-reload-interval", "Interval used by scrape manager to throttle target groups updates.").
|
||||
Hidden().Default("5s").SetValue(&cfg.scrape.DiscoveryReloadInterval)
|
||||
|
||||
a.Flag("enable-feature", "Comma separated feature names to enable. Valid options: auto-gomemlimit, exemplar-storage, expand-external-labels, memory-snapshot-on-shutdown, promql-per-step-stats, promql-experimental-functions, extra-scrape-metrics, new-service-discovery-manager, auto-gomaxprocs, no-default-scrape-port, native-histograms, otlp-write-receiver, created-timestamp-zero-ingestion, concurrent-rule-eval. See https://prometheus.io/docs/prometheus/latest/feature_flags/ for more details.").
|
||||
a.Flag("enable-feature", "Comma separated feature names to enable. Valid options: auto-gomemlimit, exemplar-storage, expand-external-labels, memory-snapshot-on-shutdown, promql-per-step-stats, promql-experimental-functions, extra-scrape-metrics, auto-gomaxprocs, no-default-scrape-port, native-histograms, otlp-write-receiver, created-timestamp-zero-ingestion, concurrent-rule-eval. See https://prometheus.io/docs/prometheus/latest/feature_flags/ for more details.").
|
||||
Default("").StringsVar(&cfg.featureList)
|
||||
|
||||
a.Flag("agent", "Run Prometheus in 'Agent mode'.").BoolVar(&agentMode)
|
||||
|
|
@ -651,8 +645,8 @@ func main() {
|
|||
|
||||
ctxScrape, cancelScrape = context.WithCancel(context.Background())
|
||||
ctxNotify, cancelNotify = context.WithCancel(context.Background())
|
||||
discoveryManagerScrape discoveryManager
|
||||
discoveryManagerNotify discoveryManager
|
||||
discoveryManagerScrape *discovery.Manager
|
||||
discoveryManagerNotify *discovery.Manager
|
||||
)
|
||||
|
||||
// Kubernetes client metrics are used by Kubernetes SD.
|
||||
|
|
@ -672,42 +666,16 @@ func main() {
|
|||
os.Exit(1)
|
||||
}
|
||||
|
||||
if cfg.enableNewSDManager {
|
||||
{
|
||||
discMgr := discovery.NewManager(ctxScrape, log.With(logger, "component", "discovery manager scrape"), prometheus.DefaultRegisterer, sdMetrics, discovery.Name("scrape"))
|
||||
if discMgr == nil {
|
||||
level.Error(logger).Log("msg", "failed to create a discovery manager scrape")
|
||||
os.Exit(1)
|
||||
}
|
||||
discoveryManagerScrape = discMgr
|
||||
}
|
||||
discoveryManagerScrape = discovery.NewManager(ctxScrape, log.With(logger, "component", "discovery manager scrape"), prometheus.DefaultRegisterer, sdMetrics, discovery.Name("scrape"))
|
||||
if discoveryManagerScrape == nil {
|
||||
level.Error(logger).Log("msg", "failed to create a discovery manager scrape")
|
||||
os.Exit(1)
|
||||
}
|
||||
|
||||
{
|
||||
discMgr := discovery.NewManager(ctxNotify, log.With(logger, "component", "discovery manager notify"), prometheus.DefaultRegisterer, sdMetrics, discovery.Name("notify"))
|
||||
if discMgr == nil {
|
||||
level.Error(logger).Log("msg", "failed to create a discovery manager notify")
|
||||
os.Exit(1)
|
||||
}
|
||||
discoveryManagerNotify = discMgr
|
||||
}
|
||||
} else {
|
||||
{
|
||||
discMgr := legacymanager.NewManager(ctxScrape, log.With(logger, "component", "discovery manager scrape"), prometheus.DefaultRegisterer, sdMetrics, legacymanager.Name("scrape"))
|
||||
if discMgr == nil {
|
||||
level.Error(logger).Log("msg", "failed to create a discovery manager scrape")
|
||||
os.Exit(1)
|
||||
}
|
||||
discoveryManagerScrape = discMgr
|
||||
}
|
||||
|
||||
{
|
||||
discMgr := legacymanager.NewManager(ctxNotify, log.With(logger, "component", "discovery manager notify"), prometheus.DefaultRegisterer, sdMetrics, legacymanager.Name("notify"))
|
||||
if discMgr == nil {
|
||||
level.Error(logger).Log("msg", "failed to create a discovery manager notify")
|
||||
os.Exit(1)
|
||||
}
|
||||
discoveryManagerNotify = discMgr
|
||||
}
|
||||
discoveryManagerNotify = discovery.NewManager(ctxNotify, log.With(logger, "component", "discovery manager notify"), prometheus.DefaultRegisterer, sdMetrics, discovery.Name("notify"))
|
||||
if discoveryManagerNotify == nil {
|
||||
level.Error(logger).Log("msg", "failed to create a discovery manager notify")
|
||||
os.Exit(1)
|
||||
}
|
||||
|
||||
scrapeManager, err := scrape.NewManager(
|
||||
|
|
@ -1765,15 +1733,6 @@ func (opts agentOptions) ToAgentOptions(outOfOrderTimeWindow int64) agent.Option
|
|||
}
|
||||
}
|
||||
|
||||
// discoveryManager interfaces the discovery manager. This is used to keep using
|
||||
// the manager that restarts SD's on reload for a few releases until we feel
|
||||
// the new manager can be enabled for all users.
|
||||
type discoveryManager interface {
|
||||
ApplyConfig(cfg map[string]discovery.Configs) error
|
||||
Run() error
|
||||
SyncCh() <-chan map[string][]*targetgroup.Group
|
||||
}
|
||||
|
||||
// rwProtoMsgFlagParser is a custom parser for config.RemoteWriteProtoMsg enum.
|
||||
type rwProtoMsgFlagParser struct {
|
||||
msgs *[]config.RemoteWriteProtoMsg
|
||||
|
|
|
|||
|
|
@ -1,332 +0,0 @@
|
|||
// 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 legacymanager
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
"reflect"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/go-kit/log"
|
||||
"github.com/go-kit/log/level"
|
||||
"github.com/prometheus/client_golang/prometheus"
|
||||
|
||||
"github.com/prometheus/prometheus/discovery"
|
||||
"github.com/prometheus/prometheus/discovery/targetgroup"
|
||||
)
|
||||
|
||||
type poolKey struct {
|
||||
setName string
|
||||
provider string
|
||||
}
|
||||
|
||||
// provider holds a Discoverer instance, its configuration and its subscribers.
|
||||
type provider struct {
|
||||
name string
|
||||
d discovery.Discoverer
|
||||
subs []string
|
||||
config interface{}
|
||||
}
|
||||
|
||||
// NewManager is the Discovery Manager constructor.
|
||||
func NewManager(ctx context.Context, logger log.Logger, registerer prometheus.Registerer, sdMetrics map[string]discovery.DiscovererMetrics, options ...func(*Manager)) *Manager {
|
||||
if logger == nil {
|
||||
logger = log.NewNopLogger()
|
||||
}
|
||||
mgr := &Manager{
|
||||
logger: logger,
|
||||
syncCh: make(chan map[string][]*targetgroup.Group),
|
||||
targets: make(map[poolKey]map[string]*targetgroup.Group),
|
||||
discoverCancel: []context.CancelFunc{},
|
||||
ctx: ctx,
|
||||
updatert: 5 * time.Second,
|
||||
triggerSend: make(chan struct{}, 1),
|
||||
registerer: registerer,
|
||||
sdMetrics: sdMetrics,
|
||||
}
|
||||
for _, option := range options {
|
||||
option(mgr)
|
||||
}
|
||||
|
||||
// Register the metrics.
|
||||
// We have to do this after setting all options, so that the name of the Manager is set.
|
||||
if metrics, err := discovery.NewManagerMetrics(registerer, mgr.name); err == nil {
|
||||
mgr.metrics = metrics
|
||||
} else {
|
||||
level.Error(logger).Log("msg", "Failed to create discovery manager metrics", "manager", mgr.name, "err", err)
|
||||
return nil
|
||||
}
|
||||
|
||||
return mgr
|
||||
}
|
||||
|
||||
// Name sets the name of the manager.
|
||||
func Name(n string) func(*Manager) {
|
||||
return func(m *Manager) {
|
||||
m.mtx.Lock()
|
||||
defer m.mtx.Unlock()
|
||||
m.name = n
|
||||
}
|
||||
}
|
||||
|
||||
// Manager maintains a set of discovery providers and sends each update to a map channel.
|
||||
// Targets are grouped by the target set name.
|
||||
type Manager struct {
|
||||
logger log.Logger
|
||||
name string
|
||||
mtx sync.RWMutex
|
||||
ctx context.Context
|
||||
discoverCancel []context.CancelFunc
|
||||
|
||||
// Some Discoverers(eg. k8s) send only the updates for a given target group
|
||||
// so we use map[tg.Source]*targetgroup.Group to know which group to update.
|
||||
targets map[poolKey]map[string]*targetgroup.Group
|
||||
// providers keeps track of SD providers.
|
||||
providers []*provider
|
||||
// The sync channel sends the updates as a map where the key is the job value from the scrape config.
|
||||
syncCh chan map[string][]*targetgroup.Group
|
||||
|
||||
// How long to wait before sending updates to the channel. The variable
|
||||
// should only be modified in unit tests.
|
||||
updatert time.Duration
|
||||
|
||||
// The triggerSend channel signals to the manager that new updates have been received from providers.
|
||||
triggerSend chan struct{}
|
||||
|
||||
// A registerer for all service discovery metrics.
|
||||
registerer prometheus.Registerer
|
||||
|
||||
metrics *discovery.Metrics
|
||||
sdMetrics map[string]discovery.DiscovererMetrics
|
||||
}
|
||||
|
||||
// Run starts the background processing.
|
||||
func (m *Manager) Run() error {
|
||||
go m.sender()
|
||||
<-m.ctx.Done()
|
||||
m.cancelDiscoverers()
|
||||
return m.ctx.Err()
|
||||
}
|
||||
|
||||
// SyncCh returns a read only channel used by all the clients to receive target updates.
|
||||
func (m *Manager) SyncCh() <-chan map[string][]*targetgroup.Group {
|
||||
return m.syncCh
|
||||
}
|
||||
|
||||
// ApplyConfig removes all running discovery providers and starts new ones using the provided config.
|
||||
func (m *Manager) ApplyConfig(cfg map[string]discovery.Configs) error {
|
||||
m.mtx.Lock()
|
||||
defer m.mtx.Unlock()
|
||||
|
||||
for pk := range m.targets {
|
||||
if _, ok := cfg[pk.setName]; !ok {
|
||||
m.metrics.DiscoveredTargets.DeleteLabelValues(m.name, pk.setName)
|
||||
}
|
||||
}
|
||||
m.cancelDiscoverers()
|
||||
m.targets = make(map[poolKey]map[string]*targetgroup.Group)
|
||||
m.providers = nil
|
||||
m.discoverCancel = nil
|
||||
|
||||
failedCount := 0
|
||||
for name, scfg := range cfg {
|
||||
failedCount += m.registerProviders(scfg, name)
|
||||
m.metrics.DiscoveredTargets.WithLabelValues(name).Set(0)
|
||||
}
|
||||
m.metrics.FailedConfigs.Set(float64(failedCount))
|
||||
|
||||
for _, prov := range m.providers {
|
||||
m.startProvider(m.ctx, prov)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// StartCustomProvider is used for sdtool. Only use this if you know what you're doing.
|
||||
func (m *Manager) StartCustomProvider(ctx context.Context, name string, worker discovery.Discoverer) {
|
||||
p := &provider{
|
||||
name: name,
|
||||
d: worker,
|
||||
subs: []string{name},
|
||||
}
|
||||
m.providers = append(m.providers, p)
|
||||
m.startProvider(ctx, p)
|
||||
}
|
||||
|
||||
func (m *Manager) startProvider(ctx context.Context, p *provider) {
|
||||
level.Debug(m.logger).Log("msg", "Starting provider", "provider", p.name, "subs", fmt.Sprintf("%v", p.subs))
|
||||
ctx, cancel := context.WithCancel(ctx)
|
||||
updates := make(chan []*targetgroup.Group)
|
||||
|
||||
m.discoverCancel = append(m.discoverCancel, cancel)
|
||||
|
||||
go p.d.Run(ctx, updates)
|
||||
go m.updater(ctx, p, updates)
|
||||
}
|
||||
|
||||
func (m *Manager) updater(ctx context.Context, p *provider, updates chan []*targetgroup.Group) {
|
||||
for {
|
||||
select {
|
||||
case <-ctx.Done():
|
||||
return
|
||||
case tgs, ok := <-updates:
|
||||
m.metrics.ReceivedUpdates.Inc()
|
||||
if !ok {
|
||||
level.Debug(m.logger).Log("msg", "Discoverer channel closed", "provider", p.name)
|
||||
return
|
||||
}
|
||||
|
||||
for _, s := range p.subs {
|
||||
m.updateGroup(poolKey{setName: s, provider: p.name}, tgs)
|
||||
}
|
||||
|
||||
select {
|
||||
case m.triggerSend <- struct{}{}:
|
||||
default:
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (m *Manager) sender() {
|
||||
ticker := time.NewTicker(m.updatert)
|
||||
defer ticker.Stop()
|
||||
|
||||
for {
|
||||
select {
|
||||
case <-m.ctx.Done():
|
||||
return
|
||||
case <-ticker.C: // Some discoverers send updates too often so we throttle these with the ticker.
|
||||
select {
|
||||
case <-m.triggerSend:
|
||||
m.metrics.SentUpdates.Inc()
|
||||
select {
|
||||
case m.syncCh <- m.allGroups():
|
||||
default:
|
||||
m.metrics.DelayedUpdates.Inc()
|
||||
level.Debug(m.logger).Log("msg", "Discovery receiver's channel was full so will retry the next cycle")
|
||||
select {
|
||||
case m.triggerSend <- struct{}{}:
|
||||
default:
|
||||
}
|
||||
}
|
||||
default:
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (m *Manager) cancelDiscoverers() {
|
||||
for _, c := range m.discoverCancel {
|
||||
c()
|
||||
}
|
||||
}
|
||||
|
||||
func (m *Manager) updateGroup(poolKey poolKey, tgs []*targetgroup.Group) {
|
||||
m.mtx.Lock()
|
||||
defer m.mtx.Unlock()
|
||||
|
||||
if _, ok := m.targets[poolKey]; !ok {
|
||||
m.targets[poolKey] = make(map[string]*targetgroup.Group)
|
||||
}
|
||||
for _, tg := range tgs {
|
||||
if tg != nil { // Some Discoverers send nil target group so need to check for it to avoid panics.
|
||||
m.targets[poolKey][tg.Source] = tg
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (m *Manager) allGroups() map[string][]*targetgroup.Group {
|
||||
m.mtx.RLock()
|
||||
defer m.mtx.RUnlock()
|
||||
|
||||
tSets := map[string][]*targetgroup.Group{}
|
||||
n := map[string]int{}
|
||||
for pkey, tsets := range m.targets {
|
||||
for _, tg := range tsets {
|
||||
// Even if the target group 'tg' is empty we still need to send it to the 'Scrape manager'
|
||||
// to signal that it needs to stop all scrape loops for this target set.
|
||||
tSets[pkey.setName] = append(tSets[pkey.setName], tg)
|
||||
n[pkey.setName] += len(tg.Targets)
|
||||
}
|
||||
}
|
||||
for setName, v := range n {
|
||||
m.metrics.DiscoveredTargets.WithLabelValues(setName).Set(float64(v))
|
||||
}
|
||||
return tSets
|
||||
}
|
||||
|
||||
// registerProviders returns a number of failed SD config.
|
||||
func (m *Manager) registerProviders(cfgs discovery.Configs, setName string) int {
|
||||
var (
|
||||
failed int
|
||||
added bool
|
||||
)
|
||||
add := func(cfg discovery.Config) {
|
||||
for _, p := range m.providers {
|
||||
if reflect.DeepEqual(cfg, p.config) {
|
||||
p.subs = append(p.subs, setName)
|
||||
added = true
|
||||
return
|
||||
}
|
||||
}
|
||||
typ := cfg.Name()
|
||||
d, err := cfg.NewDiscoverer(discovery.DiscovererOptions{
|
||||
Logger: log.With(m.logger, "discovery", typ, "config", setName),
|
||||
Metrics: m.sdMetrics[typ],
|
||||
})
|
||||
if err != nil {
|
||||
level.Error(m.logger).Log("msg", "Cannot create service discovery", "err", err, "type", typ, "config", setName)
|
||||
failed++
|
||||
return
|
||||
}
|
||||
m.providers = append(m.providers, &provider{
|
||||
name: fmt.Sprintf("%s/%d", typ, len(m.providers)),
|
||||
d: d,
|
||||
config: cfg,
|
||||
subs: []string{setName},
|
||||
})
|
||||
added = true
|
||||
}
|
||||
for _, cfg := range cfgs {
|
||||
add(cfg)
|
||||
}
|
||||
if !added {
|
||||
// Add an empty target group to force the refresh of the corresponding
|
||||
// scrape pool and to notify the receiver that this target set has no
|
||||
// current targets.
|
||||
// It can happen because the combined set of SD configurations is empty
|
||||
// or because we fail to instantiate all the SD configurations.
|
||||
add(discovery.StaticConfig{{}})
|
||||
}
|
||||
return failed
|
||||
}
|
||||
|
||||
// StaticProvider holds a list of target groups that never change.
|
||||
type StaticProvider struct {
|
||||
TargetGroups []*targetgroup.Group
|
||||
}
|
||||
|
||||
// Run implements the Worker interface.
|
||||
func (sd *StaticProvider) Run(ctx context.Context, ch chan<- []*targetgroup.Group) {
|
||||
// We still have to consider that the consumer exits right away in which case
|
||||
// the context will be canceled.
|
||||
select {
|
||||
case ch <- sd.TargetGroups:
|
||||
case <-ctx.Done():
|
||||
}
|
||||
close(ch)
|
||||
}
|
||||
File diff suppressed because it is too large
Load diff
|
|
@ -1,261 +0,0 @@
|
|||
// Copyright 2020 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 legacymanager
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"reflect"
|
||||
"sort"
|
||||
"strconv"
|
||||
"strings"
|
||||
"sync"
|
||||
|
||||
"gopkg.in/yaml.v2"
|
||||
|
||||
"github.com/prometheus/prometheus/discovery"
|
||||
"github.com/prometheus/prometheus/discovery/targetgroup"
|
||||
)
|
||||
|
||||
const (
|
||||
configFieldPrefix = "AUTO_DISCOVERY_"
|
||||
staticConfigsKey = "static_configs"
|
||||
staticConfigsFieldName = configFieldPrefix + staticConfigsKey
|
||||
)
|
||||
|
||||
var (
|
||||
configNames = make(map[string]discovery.Config)
|
||||
configFieldNames = make(map[reflect.Type]string)
|
||||
configFields []reflect.StructField
|
||||
|
||||
configTypesMu sync.Mutex
|
||||
configTypes = make(map[reflect.Type]reflect.Type)
|
||||
|
||||
emptyStructType = reflect.TypeOf(struct{}{})
|
||||
configsType = reflect.TypeOf(discovery.Configs{})
|
||||
)
|
||||
|
||||
// RegisterConfig registers the given Config type for YAML marshaling and unmarshaling.
|
||||
func RegisterConfig(config discovery.Config) {
|
||||
registerConfig(config.Name()+"_sd_configs", reflect.TypeOf(config), config)
|
||||
}
|
||||
|
||||
func init() {
|
||||
// N.B.: static_configs is the only Config type implemented by default.
|
||||
// All other types are registered at init by their implementing packages.
|
||||
elemTyp := reflect.TypeOf(&targetgroup.Group{})
|
||||
registerConfig(staticConfigsKey, elemTyp, discovery.StaticConfig{})
|
||||
}
|
||||
|
||||
func registerConfig(yamlKey string, elemType reflect.Type, config discovery.Config) {
|
||||
name := config.Name()
|
||||
if _, ok := configNames[name]; ok {
|
||||
panic(fmt.Sprintf("discovery: Config named %q is already registered", name))
|
||||
}
|
||||
configNames[name] = config
|
||||
|
||||
fieldName := configFieldPrefix + yamlKey // Field must be exported.
|
||||
configFieldNames[elemType] = fieldName
|
||||
|
||||
// Insert fields in sorted order.
|
||||
i := sort.Search(len(configFields), func(k int) bool {
|
||||
return fieldName < configFields[k].Name
|
||||
})
|
||||
configFields = append(configFields, reflect.StructField{}) // Add empty field at end.
|
||||
copy(configFields[i+1:], configFields[i:]) // Shift fields to the right.
|
||||
configFields[i] = reflect.StructField{ // Write new field in place.
|
||||
Name: fieldName,
|
||||
Type: reflect.SliceOf(elemType),
|
||||
Tag: reflect.StructTag(`yaml:"` + yamlKey + `,omitempty"`),
|
||||
}
|
||||
}
|
||||
|
||||
func getConfigType(out reflect.Type) reflect.Type {
|
||||
configTypesMu.Lock()
|
||||
defer configTypesMu.Unlock()
|
||||
if typ, ok := configTypes[out]; ok {
|
||||
return typ
|
||||
}
|
||||
// Initial exported fields map one-to-one.
|
||||
var fields []reflect.StructField
|
||||
for i, n := 0, out.NumField(); i < n; i++ {
|
||||
switch field := out.Field(i); {
|
||||
case field.PkgPath == "" && field.Type != configsType:
|
||||
fields = append(fields, field)
|
||||
default:
|
||||
fields = append(fields, reflect.StructField{
|
||||
Name: "_" + field.Name, // Field must be unexported.
|
||||
PkgPath: out.PkgPath(),
|
||||
Type: emptyStructType,
|
||||
})
|
||||
}
|
||||
}
|
||||
// Append extra config fields on the end.
|
||||
fields = append(fields, configFields...)
|
||||
typ := reflect.StructOf(fields)
|
||||
configTypes[out] = typ
|
||||
return typ
|
||||
}
|
||||
|
||||
// UnmarshalYAMLWithInlineConfigs helps implement yaml.Unmarshal for structs
|
||||
// that have a Configs field that should be inlined.
|
||||
func UnmarshalYAMLWithInlineConfigs(out interface{}, unmarshal func(interface{}) error) error {
|
||||
outVal := reflect.ValueOf(out)
|
||||
if outVal.Kind() != reflect.Ptr {
|
||||
return fmt.Errorf("discovery: can only unmarshal into a struct pointer: %T", out)
|
||||
}
|
||||
outVal = outVal.Elem()
|
||||
if outVal.Kind() != reflect.Struct {
|
||||
return fmt.Errorf("discovery: can only unmarshal into a struct pointer: %T", out)
|
||||
}
|
||||
outTyp := outVal.Type()
|
||||
|
||||
cfgTyp := getConfigType(outTyp)
|
||||
cfgPtr := reflect.New(cfgTyp)
|
||||
cfgVal := cfgPtr.Elem()
|
||||
|
||||
// Copy shared fields (defaults) to dynamic value.
|
||||
var configs *discovery.Configs
|
||||
for i, n := 0, outVal.NumField(); i < n; i++ {
|
||||
if outTyp.Field(i).Type == configsType {
|
||||
configs = outVal.Field(i).Addr().Interface().(*discovery.Configs)
|
||||
continue
|
||||
}
|
||||
if cfgTyp.Field(i).PkgPath != "" {
|
||||
continue // Field is unexported: ignore.
|
||||
}
|
||||
cfgVal.Field(i).Set(outVal.Field(i))
|
||||
}
|
||||
if configs == nil {
|
||||
return fmt.Errorf("discovery: Configs field not found in type: %T", out)
|
||||
}
|
||||
|
||||
// Unmarshal into dynamic value.
|
||||
if err := unmarshal(cfgPtr.Interface()); err != nil {
|
||||
return replaceYAMLTypeError(err, cfgTyp, outTyp)
|
||||
}
|
||||
|
||||
// Copy shared fields from dynamic value.
|
||||
for i, n := 0, outVal.NumField(); i < n; i++ {
|
||||
if cfgTyp.Field(i).PkgPath != "" {
|
||||
continue // Field is unexported: ignore.
|
||||
}
|
||||
outVal.Field(i).Set(cfgVal.Field(i))
|
||||
}
|
||||
|
||||
var err error
|
||||
*configs, err = readConfigs(cfgVal, outVal.NumField())
|
||||
return err
|
||||
}
|
||||
|
||||
func readConfigs(structVal reflect.Value, startField int) (discovery.Configs, error) {
|
||||
var (
|
||||
configs discovery.Configs
|
||||
targets []*targetgroup.Group
|
||||
)
|
||||
for i, n := startField, structVal.NumField(); i < n; i++ {
|
||||
field := structVal.Field(i)
|
||||
if field.Kind() != reflect.Slice {
|
||||
panic("discovery: internal error: field is not a slice")
|
||||
}
|
||||
for k := 0; k < field.Len(); k++ {
|
||||
val := field.Index(k)
|
||||
if val.IsZero() || (val.Kind() == reflect.Ptr && val.Elem().IsZero()) {
|
||||
key := configFieldNames[field.Type().Elem()]
|
||||
key = strings.TrimPrefix(key, configFieldPrefix)
|
||||
return nil, fmt.Errorf("empty or null section in %s", key)
|
||||
}
|
||||
switch c := val.Interface().(type) {
|
||||
case *targetgroup.Group:
|
||||
// Add index to the static config target groups for unique identification
|
||||
// within scrape pool.
|
||||
c.Source = strconv.Itoa(len(targets))
|
||||
// Coalesce multiple static configs into a single static config.
|
||||
targets = append(targets, c)
|
||||
case discovery.Config:
|
||||
configs = append(configs, c)
|
||||
default:
|
||||
panic("discovery: internal error: slice element is not a Config")
|
||||
}
|
||||
}
|
||||
}
|
||||
if len(targets) > 0 {
|
||||
configs = append(configs, discovery.StaticConfig(targets))
|
||||
}
|
||||
return configs, nil
|
||||
}
|
||||
|
||||
// MarshalYAMLWithInlineConfigs helps implement yaml.Marshal for structs
|
||||
// that have a Configs field that should be inlined.
|
||||
func MarshalYAMLWithInlineConfigs(in interface{}) (interface{}, error) {
|
||||
inVal := reflect.ValueOf(in)
|
||||
for inVal.Kind() == reflect.Ptr {
|
||||
inVal = inVal.Elem()
|
||||
}
|
||||
inTyp := inVal.Type()
|
||||
|
||||
cfgTyp := getConfigType(inTyp)
|
||||
cfgPtr := reflect.New(cfgTyp)
|
||||
cfgVal := cfgPtr.Elem()
|
||||
|
||||
// Copy shared fields to dynamic value.
|
||||
var configs *discovery.Configs
|
||||
for i, n := 0, inTyp.NumField(); i < n; i++ {
|
||||
if inTyp.Field(i).Type == configsType {
|
||||
configs = inVal.Field(i).Addr().Interface().(*discovery.Configs)
|
||||
}
|
||||
if cfgTyp.Field(i).PkgPath != "" {
|
||||
continue // Field is unexported: ignore.
|
||||
}
|
||||
cfgVal.Field(i).Set(inVal.Field(i))
|
||||
}
|
||||
if configs == nil {
|
||||
return nil, fmt.Errorf("discovery: Configs field not found in type: %T", in)
|
||||
}
|
||||
|
||||
if err := writeConfigs(cfgVal, *configs); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return cfgPtr.Interface(), nil
|
||||
}
|
||||
|
||||
func writeConfigs(structVal reflect.Value, configs discovery.Configs) error {
|
||||
targets := structVal.FieldByName(staticConfigsFieldName).Addr().Interface().(*[]*targetgroup.Group)
|
||||
for _, c := range configs {
|
||||
if sc, ok := c.(discovery.StaticConfig); ok {
|
||||
*targets = append(*targets, sc...)
|
||||
continue
|
||||
}
|
||||
fieldName, ok := configFieldNames[reflect.TypeOf(c)]
|
||||
if !ok {
|
||||
return fmt.Errorf("discovery: cannot marshal unregistered Config type: %T", c)
|
||||
}
|
||||
field := structVal.FieldByName(fieldName)
|
||||
field.Set(reflect.Append(field, reflect.ValueOf(c)))
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func replaceYAMLTypeError(err error, oldTyp, newTyp reflect.Type) error {
|
||||
var e *yaml.TypeError
|
||||
if errors.As(err, &e) {
|
||||
oldStr := oldTyp.String()
|
||||
newStr := newTyp.String()
|
||||
for i, s := range e.Errors {
|
||||
e.Errors[i] = strings.ReplaceAll(s, oldStr, newStr)
|
||||
}
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
|
@ -55,7 +55,7 @@ The Prometheus monitoring server
|
|||
| <code class="text-nowrap">--query.timeout</code> | Maximum time a query may take before being aborted. Use with server mode only. | `2m` |
|
||||
| <code class="text-nowrap">--query.max-concurrency</code> | Maximum number of queries executed concurrently. Use with server mode only. | `20` |
|
||||
| <code class="text-nowrap">--query.max-samples</code> | Maximum number of samples a single query can load into memory. Note that queries will fail if they try to load more samples than this into memory, so this also limits the number of samples a query can return. Use with server mode only. | `50000000` |
|
||||
| <code class="text-nowrap">--enable-feature</code> <code class="text-nowrap">...<code class="text-nowrap"> | Comma separated feature names to enable. Valid options: auto-gomemlimit, exemplar-storage, expand-external-labels, memory-snapshot-on-shutdown, promql-per-step-stats, promql-experimental-functions, extra-scrape-metrics, new-service-discovery-manager, auto-gomaxprocs, no-default-scrape-port, native-histograms, otlp-write-receiver, created-timestamp-zero-ingestion, concurrent-rule-eval. See https://prometheus.io/docs/prometheus/latest/feature_flags/ for more details. | |
|
||||
| <code class="text-nowrap">--enable-feature</code> <code class="text-nowrap">...<code class="text-nowrap"> | Comma separated feature names to enable. Valid options: auto-gomemlimit, exemplar-storage, expand-external-labels, memory-snapshot-on-shutdown, promql-per-step-stats, promql-experimental-functions, extra-scrape-metrics, auto-gomaxprocs, no-default-scrape-port, native-histograms, otlp-write-receiver, created-timestamp-zero-ingestion, concurrent-rule-eval. See https://prometheus.io/docs/prometheus/latest/feature_flags/ for more details. | |
|
||||
| <code class="text-nowrap">--agent</code> | Run Prometheus in 'Agent mode'. | |
|
||||
| <code class="text-nowrap">--log.level</code> | Only log messages with the given severity or above. One of: [debug, info, warn, error] | `info` |
|
||||
| <code class="text-nowrap">--log.format</code> | Output format of log messages. One of: [logfmt, json] | `logfmt` |
|
||||
|
|
|
|||
|
|
@ -47,20 +47,6 @@ When enabled, for each instance scrape, Prometheus stores a sample in the follow
|
|||
to find out how close they are to reaching the limit with `scrape_samples_post_metric_relabeling / scrape_sample_limit`. Note that `scrape_sample_limit` can be zero if there is no limit configured, which means that the query above can return `+Inf` for targets with no limit (as we divide by zero). If you want to query only for targets that do have a sample limit use this query: `scrape_samples_post_metric_relabeling / (scrape_sample_limit > 0)`.
|
||||
- `scrape_body_size_bytes`. The uncompressed size of the most recent scrape response, if successful. Scrapes failing because `body_size_limit` is exceeded report `-1`, other scrape failures report `0`.
|
||||
|
||||
## New service discovery manager
|
||||
|
||||
`--enable-feature=new-service-discovery-manager`
|
||||
|
||||
When enabled, Prometheus uses a new service discovery manager that does not
|
||||
restart unchanged discoveries upon reloading. This makes reloads faster and reduces
|
||||
pressure on service discoveries' sources.
|
||||
|
||||
Users are encouraged to test the new service discovery manager and report any
|
||||
issues upstream.
|
||||
|
||||
In future releases, this new service discovery manager will become the default and
|
||||
this feature flag will be ignored.
|
||||
|
||||
## Prometheus agent
|
||||
|
||||
`--enable-feature=agent`
|
||||
|
|
|
|||
Loading…
Reference in a new issue