Opentracing support
This commit is contained in:
Michael
Traefiker
parent
8394549857
commit
30ffba78e6
272 changed files with 44352 additions and 63 deletions
332
vendor/github.com/uber/jaeger-lib/metrics/local.go
generated
vendored
Normal file
332
vendor/github.com/uber/jaeger-lib/metrics/local.go
generated
vendored
Normal file
|
|
@ -0,0 +1,332 @@
|
|||
// Copyright (c) 2017 Uber Technologies, Inc.
|
||||
//
|
||||
// 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 metrics
|
||||
|
||||
import (
|
||||
"sort"
|
||||
"sync"
|
||||
"sync/atomic"
|
||||
"time"
|
||||
|
||||
"github.com/codahale/hdrhistogram"
|
||||
)
|
||||
|
||||
// This is intentionally very similar to github.com/codahale/metrics, the
|
||||
// main difference being that counters/gauges are scoped to the provider
|
||||
// rather than being global (to facilitate testing).
|
||||
|
||||
// A LocalBackend is a metrics provider which aggregates data in-vm, and
|
||||
// allows exporting snapshots to shove the data into a remote collector
|
||||
type LocalBackend struct {
|
||||
cm sync.Mutex
|
||||
gm sync.Mutex
|
||||
tm sync.Mutex
|
||||
counters map[string]*int64
|
||||
gauges map[string]*int64
|
||||
timers map[string]*localBackendTimer
|
||||
stop chan struct{}
|
||||
wg sync.WaitGroup
|
||||
TagsSep string
|
||||
TagKVSep string
|
||||
}
|
||||
|
||||
// NewLocalBackend returns a new LocalBackend. The collectionInterval is the histogram
|
||||
// time window for each timer.
|
||||
func NewLocalBackend(collectionInterval time.Duration) *LocalBackend {
|
||||
b := &LocalBackend{
|
||||
counters: make(map[string]*int64),
|
||||
gauges: make(map[string]*int64),
|
||||
timers: make(map[string]*localBackendTimer),
|
||||
stop: make(chan struct{}),
|
||||
TagsSep: "|",
|
||||
TagKVSep: "=",
|
||||
}
|
||||
if collectionInterval == 0 {
|
||||
// Use one histogram time window for all timers
|
||||
return b
|
||||
}
|
||||
b.wg.Add(1)
|
||||
go b.runLoop(collectionInterval)
|
||||
return b
|
||||
}
|
||||
|
||||
// Clear discards accumulated stats
|
||||
func (b *LocalBackend) Clear() {
|
||||
b.cm.Lock()
|
||||
defer b.cm.Unlock()
|
||||
b.gm.Lock()
|
||||
defer b.gm.Unlock()
|
||||
b.tm.Lock()
|
||||
defer b.tm.Unlock()
|
||||
b.counters = make(map[string]*int64)
|
||||
b.gauges = make(map[string]*int64)
|
||||
b.timers = make(map[string]*localBackendTimer)
|
||||
}
|
||||
|
||||
func (b *LocalBackend) runLoop(collectionInterval time.Duration) {
|
||||
defer b.wg.Done()
|
||||
ticker := time.NewTicker(collectionInterval)
|
||||
for {
|
||||
select {
|
||||
case <-ticker.C:
|
||||
b.tm.Lock()
|
||||
timers := make(map[string]*localBackendTimer, len(b.timers))
|
||||
for timerName, timer := range b.timers {
|
||||
timers[timerName] = timer
|
||||
}
|
||||
b.tm.Unlock()
|
||||
|
||||
for _, t := range timers {
|
||||
t.Lock()
|
||||
t.hist.Rotate()
|
||||
t.Unlock()
|
||||
}
|
||||
case <-b.stop:
|
||||
ticker.Stop()
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// IncCounter increments a counter value
|
||||
func (b *LocalBackend) IncCounter(name string, tags map[string]string, delta int64) {
|
||||
name = GetKey(name, tags, b.TagsSep, b.TagKVSep)
|
||||
b.cm.Lock()
|
||||
defer b.cm.Unlock()
|
||||
counter := b.counters[name]
|
||||
if counter == nil {
|
||||
b.counters[name] = new(int64)
|
||||
*b.counters[name] = delta
|
||||
return
|
||||
}
|
||||
atomic.AddInt64(counter, delta)
|
||||
}
|
||||
|
||||
// UpdateGauge updates the value of a gauge
|
||||
func (b *LocalBackend) UpdateGauge(name string, tags map[string]string, value int64) {
|
||||
name = GetKey(name, tags, b.TagsSep, b.TagKVSep)
|
||||
b.gm.Lock()
|
||||
defer b.gm.Unlock()
|
||||
gauge := b.gauges[name]
|
||||
if gauge == nil {
|
||||
b.gauges[name] = new(int64)
|
||||
*b.gauges[name] = value
|
||||
return
|
||||
}
|
||||
atomic.StoreInt64(gauge, value)
|
||||
}
|
||||
|
||||
// RecordTimer records a timing duration
|
||||
func (b *LocalBackend) RecordTimer(name string, tags map[string]string, d time.Duration) {
|
||||
name = GetKey(name, tags, b.TagsSep, b.TagKVSep)
|
||||
timer := b.findOrCreateTimer(name)
|
||||
timer.Lock()
|
||||
timer.hist.Current.RecordValue(int64(d / time.Millisecond))
|
||||
timer.Unlock()
|
||||
}
|
||||
|
||||
func (b *LocalBackend) findOrCreateTimer(name string) *localBackendTimer {
|
||||
b.tm.Lock()
|
||||
defer b.tm.Unlock()
|
||||
if t, ok := b.timers[name]; ok {
|
||||
return t
|
||||
}
|
||||
|
||||
t := &localBackendTimer{
|
||||
hist: hdrhistogram.NewWindowed(5, 0, int64((5*time.Minute)/time.Millisecond), 1),
|
||||
}
|
||||
b.timers[name] = t
|
||||
return t
|
||||
}
|
||||
|
||||
type localBackendTimer struct {
|
||||
sync.Mutex
|
||||
hist *hdrhistogram.WindowedHistogram
|
||||
}
|
||||
|
||||
var (
|
||||
percentiles = map[string]float64{
|
||||
"P50": 50,
|
||||
"P75": 75,
|
||||
"P90": 90,
|
||||
"P95": 95,
|
||||
"P99": 99,
|
||||
"P999": 99.9,
|
||||
}
|
||||
)
|
||||
|
||||
// Snapshot captures a snapshot of the current counter and gauge values
|
||||
func (b *LocalBackend) Snapshot() (counters, gauges map[string]int64) {
|
||||
b.cm.Lock()
|
||||
defer b.cm.Unlock()
|
||||
|
||||
counters = make(map[string]int64, len(b.counters))
|
||||
for name, value := range b.counters {
|
||||
counters[name] = atomic.LoadInt64(value)
|
||||
}
|
||||
|
||||
b.gm.Lock()
|
||||
defer b.gm.Unlock()
|
||||
|
||||
gauges = make(map[string]int64, len(b.gauges))
|
||||
for name, value := range b.gauges {
|
||||
gauges[name] = atomic.LoadInt64(value)
|
||||
}
|
||||
|
||||
b.tm.Lock()
|
||||
timers := make(map[string]*localBackendTimer)
|
||||
for timerName, timer := range b.timers {
|
||||
timers[timerName] = timer
|
||||
}
|
||||
b.tm.Unlock()
|
||||
|
||||
for timerName, timer := range timers {
|
||||
timer.Lock()
|
||||
hist := timer.hist.Merge()
|
||||
timer.Unlock()
|
||||
for name, q := range percentiles {
|
||||
gauges[timerName+"."+name] = hist.ValueAtQuantile(q)
|
||||
}
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// Stop cleanly closes the background goroutine spawned by NewLocalBackend.
|
||||
func (b *LocalBackend) Stop() {
|
||||
close(b.stop)
|
||||
b.wg.Wait()
|
||||
}
|
||||
|
||||
// GetKey converts name+tags into a single string of the form
|
||||
// "name|tag1=value1|...|tagN=valueN", where tag names are
|
||||
// sorted alphabetically.
|
||||
func GetKey(name string, tags map[string]string, tagsSep string, tagKVSep string) string {
|
||||
keys := make([]string, 0, len(tags))
|
||||
for k := range tags {
|
||||
keys = append(keys, k)
|
||||
}
|
||||
sort.Strings(keys)
|
||||
key := name
|
||||
for _, k := range keys {
|
||||
key = key + tagsSep + k + tagKVSep + tags[k]
|
||||
}
|
||||
return key
|
||||
}
|
||||
|
||||
type stats struct {
|
||||
name string
|
||||
tags map[string]string
|
||||
localBackend *LocalBackend
|
||||
}
|
||||
|
||||
type localTimer struct {
|
||||
stats
|
||||
}
|
||||
|
||||
func (l *localTimer) Record(d time.Duration) {
|
||||
l.localBackend.RecordTimer(l.name, l.tags, d)
|
||||
}
|
||||
|
||||
type localCounter struct {
|
||||
stats
|
||||
}
|
||||
|
||||
func (l *localCounter) Inc(delta int64) {
|
||||
l.localBackend.IncCounter(l.name, l.tags, delta)
|
||||
}
|
||||
|
||||
type localGauge struct {
|
||||
stats
|
||||
}
|
||||
|
||||
func (l *localGauge) Update(value int64) {
|
||||
l.localBackend.UpdateGauge(l.name, l.tags, value)
|
||||
}
|
||||
|
||||
// LocalFactory stats factory that creates metrics that are stored locally
|
||||
type LocalFactory struct {
|
||||
*LocalBackend
|
||||
namespace string
|
||||
tags map[string]string
|
||||
}
|
||||
|
||||
// NewLocalFactory returns a new LocalMetricsFactory
|
||||
func NewLocalFactory(collectionInterval time.Duration) *LocalFactory {
|
||||
return &LocalFactory{
|
||||
LocalBackend: NewLocalBackend(collectionInterval),
|
||||
}
|
||||
}
|
||||
|
||||
// appendTags adds the tags to the namespace tags and returns a combined map.
|
||||
func (l *LocalFactory) appendTags(tags map[string]string) map[string]string {
|
||||
newTags := make(map[string]string)
|
||||
for k, v := range l.tags {
|
||||
newTags[k] = v
|
||||
}
|
||||
for k, v := range tags {
|
||||
newTags[k] = v
|
||||
}
|
||||
return newTags
|
||||
}
|
||||
|
||||
func (l *LocalFactory) newNamespace(name string) string {
|
||||
if l.namespace == "" {
|
||||
return name
|
||||
}
|
||||
return l.namespace + "." + name
|
||||
}
|
||||
|
||||
// Counter returns a local stats counter
|
||||
func (l *LocalFactory) Counter(name string, tags map[string]string) Counter {
|
||||
return &localCounter{
|
||||
stats{
|
||||
name: l.newNamespace(name),
|
||||
tags: l.appendTags(tags),
|
||||
localBackend: l.LocalBackend,
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
// Timer returns a local stats timer.
|
||||
func (l *LocalFactory) Timer(name string, tags map[string]string) Timer {
|
||||
return &localTimer{
|
||||
stats{
|
||||
name: l.newNamespace(name),
|
||||
tags: l.appendTags(tags),
|
||||
localBackend: l.LocalBackend,
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
// Gauge returns a local stats gauge.
|
||||
func (l *LocalFactory) Gauge(name string, tags map[string]string) Gauge {
|
||||
return &localGauge{
|
||||
stats{
|
||||
name: l.newNamespace(name),
|
||||
tags: l.appendTags(tags),
|
||||
localBackend: l.LocalBackend,
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
// Namespace returns a new namespace.
|
||||
func (l *LocalFactory) Namespace(name string, tags map[string]string) Factory {
|
||||
return &LocalFactory{
|
||||
namespace: l.newNamespace(name),
|
||||
tags: l.appendTags(tags),
|
||||
LocalBackend: l.LocalBackend,
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue