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How to use Peek method of gauge Package

Best Gauge code snippet using gauge.Peek

statstash_test.go

Source:statstash_test.go

1// Copyright 2014 pendo.io2//3// Licensed under the Apache License, Version 2.0 (the "License");4// you may not use this file except in compliance with the License.5// You may obtain a copy of the License at6//7//    http://www.apache.org/licenses/LICENSE-2.08//9// Unless required by applicable law or agreed to in writing, software10// distributed under the License is distributed on an "AS IS" BASIS,11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.12// See the License for the specific language governing permissions and13// limitations under the License.14// Package statstash is a service used to collect statistics15// for a Google App Engine project and package them up to a backend server.16package statstash17import (18	"fmt"19	"math"20	"math/rand"21	"os"22	"time"23	"github.com/pendo-io/appwrap"24	"github.com/stretchr/testify/mock"25	. "gopkg.in/check.v1"26)27type MockFlusher struct {28	mock.Mock29	counters []StatDataCounter30	timings  []StatDataTiming31	gauges   []StatDataGauge32}33func (m *MockFlusher) Flush(data []interface{}, cfg *FlusherConfig) error {34	rargs := m.Called(data, cfg)35	m.counters = make([]StatDataCounter, 0)36	m.timings = make([]StatDataTiming, 0)37	m.gauges = make([]StatDataGauge, 0)38	for i := range data {39		switch data[i].(type) {40		case StatDataCounter:41			m.counters = append(m.counters, data[i].(StatDataCounter))42		case StatDataTiming:43			m.timings = append(m.timings, data[i].(StatDataTiming))44		case StatDataGauge:45			m.gauges = append(m.gauges, data[i].(StatDataGauge))46		}47	}48	return rargs.Error(0)49}50func (s *StatStashTest) newTestStatsStash() StatImplementation {51	ssi := NewStatInterface(appwrap.NewWriterLogger(os.Stderr), appwrap.NewLocalDatastore(false, nil), appwrap.NewLocalMemcache(), true).(StatImplementation)52	ssi.randGen = rand.New(rand.NewSource(time.Now().UnixNano()))53	return ssi54}55func (s *StatStashTest) TestStatCounters(c *C) {56	ssi := s.newTestStatsStash()57	c.Assert(ssi.IncrementCounter("TestStatCounters.foo", "a"), IsNil)58	c.Assert(ssi.IncrementCounter("TestStatCounters.foo", "a"), IsNil)59	c.Assert(ssi.IncrementCounter("TestStatCounters.foo", "b"), IsNil)60	c.Assert(ssi.IncrementCounter("TestStatCounters.bar", ""), IsNil)61	c.Assert(ssi.IncrementCounter("TestStatCounters.bar", ""), IsNil)62	c.Assert(ssi.IncrementCounterBy("TestStatCounters.bar", "", int64(10)), IsNil)63	now := time.Now()64	// at this point65	// foo, a = 266	fooA, err := ssi.peekCounter("TestStatCounters.foo", "a", now)67	c.Assert(err, IsNil)68	c.Check(fooA, Equals, uint64(2))69	// foo, b = 170	fooB, err := ssi.peekCounter("TestStatCounters.foo", "b", now)71	c.Assert(err, IsNil)72	c.Check(fooB, Equals, uint64(1))73	// bar = 174	bar, err := ssi.peekCounter("TestStatCounters.bar", "", now)75	c.Assert(err, IsNil)76	c.Check(bar, Equals, uint64(12))77}78func (s *StatStashTest) TestStatGauge(c *C) {79	ssi := s.newTestStatsStash()80	c.Assert(ssi.RecordGauge("TestStatGauge.subroutine", "A", 24.0), IsNil)81	c.Assert(ssi.RecordGauge("TestStatGauge.subroutine", "B", 10.0), IsNil)82	c.Assert(ssi.RecordGauge("TestStatGauge.subroutine", "B", 15.5), IsNil)83	c.Assert(ssi.RecordGauge("TestStatGauge.grand_total", "", 7264534001), IsNil)84	now := time.Now()85	subA, err := ssi.peekGauge("TestStatGauge.subroutine", "A", now)86	c.Assert(err, IsNil)87	c.Assert(subA, HasLen, 1)88	c.Check(subA[0], Equals, 24.0)89	subB, err := ssi.peekGauge("TestStatGauge.subroutine", "B", now)90	c.Assert(err, IsNil)91	c.Assert(subB, HasLen, 1)92	c.Check(subB[0], Equals, 15.5)93	grand, err := ssi.peekGauge("TestStatGauge.grand_total", "", now)94	c.Assert(err, IsNil)95	c.Assert(grand, HasLen, 1)96	c.Check(grand[0], Equals, float64(7264534001))97	for i := 0; i < 10; i++ {98		c.Assert(ssi.RecordGauge("TestStatGauge.upandtotheright", "", float64(i)), IsNil)99	}100	upAndToTheRight, err := ssi.peekGauge("TestStatGauge.upandtotheright", "", now)101	c.Assert(err, IsNil)102	c.Assert(upAndToTheRight, HasLen, 1)103	c.Check(upAndToTheRight[0], Equals, float64(9))104}105func (s *StatStashTest) TestStatTimings(c *C) {106	ssi := s.newTestStatsStash()107	c.Assert(ssi.RecordTiming("TestStatTimings.subroutine", "A", 24.0, 1.0), IsNil)108	c.Assert(ssi.RecordTiming("TestStatTimings.subroutine", "B", 10.0, 1.0), IsNil)109	c.Assert(ssi.RecordTiming("TestStatTimings.subroutine", "B", 15.5, 1.0), IsNil)110	c.Assert(ssi.RecordTiming("TestStatTimings.grand_total", "", 7264534001.0, 1.0), IsNil)111	now := time.Now()112	subA, err := ssi.peekTiming("TestStatTimings.subroutine", "A", now)113	c.Assert(err, IsNil)114	c.Assert(subA, HasLen, 1)115	c.Check(subA[0], Equals, 24.0)116	subB, err := ssi.peekTiming("TestStatTimings.subroutine", "B", now)117	c.Assert(err, IsNil)118	c.Assert(subB, HasLen, 2)119	c.Check(subB[0], Equals, 10.0)120	c.Check(subB[1], Equals, 15.5)121	grand, err := ssi.peekTiming("TestStatTimings.grand_total", "", now)122	c.Assert(err, IsNil)123	c.Assert(grand, HasLen, 1)124	c.Check(grand[0], Equals, 7264534001.0)125	for i := 0; i < 10; i++ {126		c.Assert(ssi.RecordTiming("TestStatTimings.upandtotheright", "", float64(i), 1.0), IsNil)127	}128	upAndToTheRight, err := ssi.peekTiming("TestStatTimings.upandtotheright", "", now)129	c.Assert(err, IsNil)130	for i, metric := range upAndToTheRight {131		c.Check(metric, Equals, float64(i))132	}133}134func (s *StatStashTest) TestGetActiveConfigs(c *C) {135	ssi := s.newTestStatsStash()136	c.Assert(ssi.Purge(), IsNil)137	c.Assert(ssi.IncrementCounter("TestGetActiveConfigs.foo", "a"), IsNil)138	c.Assert(ssi.IncrementCounter("TestGetActiveConfigs.foo", "a"), IsNil)139	c.Assert(ssi.IncrementCounter("TestGetActiveConfigs.foo", "b"), IsNil)140	c.Assert(ssi.IncrementCounter("TestGetActiveConfigs.bar", ""), IsNil)141	c.Assert(ssi.IncrementCounter("TestGetActiveConfigs.bar", ""), IsNil)142	c.Assert(ssi.IncrementCounterBy("TestGetActiveConfigs.bar", "", int64(10)), IsNil)143	now := time.Now()144	bucketTs := getStartOfFlushPeriod(now, 0).Unix()145	cfgMap, err := ssi.getActiveConfigs(now, 0)146	c.Assert(err, IsNil)147	c.Assert(cfgMap, HasLen, 3)148	for _, key := range []string{149		fmt.Sprintf("ss-metric:counter-TestGetActiveConfigs.foo-a-%d", bucketTs),150		fmt.Sprintf("ss-metric:counter-TestGetActiveConfigs.foo-b-%d", bucketTs),151		fmt.Sprintf("ss-metric:counter-TestGetActiveConfigs.bar--%d", bucketTs)} {152		_, found := cfgMap[key]153		c.Check(found, Equals, true)154	}155}156func (s *StatStashTest) TestFlushToBackend(c *C) {157	ssi := s.newTestStatsStash()158	mockFlusher := &MockFlusher{}159	c.Assert(ssi.Purge(), IsNil)160	c.Assert(ssi.IncrementCounter("TestFlushToBackend.foo", "a"), IsNil)161	c.Assert(ssi.IncrementCounter("TestFlushToBackend.foo", "a"), IsNil)162	c.Assert(ssi.IncrementCounter("TestFlushToBackend.foo", "b"), IsNil)163	c.Assert(ssi.IncrementCounter("TestFlushToBackend.bar", ""), IsNil)164	c.Assert(ssi.IncrementCounter("TestFlushToBackend.bar", ""), IsNil)165	c.Assert(ssi.IncrementCounterBy("TestFlushToBackend.bar", "", int64(10)), IsNil)166	c.Assert(ssi.RecordGauge("TestFlushToBackend.temperature", "raleigh", 24.0), IsNil)167	c.Assert(ssi.RecordGauge("TestFlushToBackend.temperature", "anchorage", 10.0), IsNil)168	c.Assert(ssi.RecordGauge("TestFlushToBackend.temperature", "anchorage", 15.5), IsNil)169	c.Assert(ssi.RecordGauge("TestFlushToBackend.temperature", "buffalo", -1.2), IsNil)170	c.Assert(ssi.RecordTiming("TestFlushToBackend.subroutine", "A", 24.0, 1.0), IsNil)171	c.Assert(ssi.RecordTiming("TestFlushToBackend.subroutine", "B", 10.0, 1.0), IsNil)172	c.Assert(ssi.RecordTiming("TestFlushToBackend.subroutine", "B", 15.5, 1.0), IsNil)173	for i := 0; i < 10; i++ {174		c.Assert(ssi.RecordTiming("TestFlushToBackend.upandtotheright", "", float64(i), 1.0), IsNil)175	}176	mockFlusher.On("Flush", mock.Anything, mock.Anything).Return(nil).Once()177	now := time.Now()178	c.Assert(ssi.UpdateBackend(now, mockFlusher, nil, true), IsNil)179	mockFlusher.AssertExpectations(c)180	c.Check(mockFlusher.counters, HasLen, 3)181	c.Check(mockFlusher.timings, HasLen, 3)182	c.Check(mockFlusher.gauges, HasLen, 3)183	for _, counter := range mockFlusher.counters {184		nameAndSource := fmt.Sprintf("%s-%s", counter.Name, counter.Source)185		switch nameAndSource {186		case "TestFlushToBackend.foo-a":187			c.Check(counter.Count, Equals, uint64(2))188		case "TestFlushToBackend.foo-b":189			c.Check(counter.Count, Equals, uint64(1))190		case "TestFlushToBackend.bar-":191			c.Check(counter.Count, Equals, uint64(12))192		}193	}194	for _, timing := range mockFlusher.timings {195		nameAndSource := fmt.Sprintf("%s-%s", timing.Name, timing.Source)196		switch nameAndSource {197		case "TestFlushToBackend.subroutine-A":198			c.Check(timing.Count, Equals, 1)199			c.Check(timing.Min, Equals, 24.0)200			c.Check(timing.Max, Equals, 24.0)201			c.Check(timing.Sum, Equals, 24.0)202			c.Check(timing.SumSquares, Equals, 576.0)203			c.Check(timing.Median, Equals, 24.0)204			c.Check(timing.NinthDecileCount, Equals, 1)205			c.Check(timing.NinthDecileValue, Equals, 24.0)206			c.Check(timing.NinthDecileSum, Equals, 24.0)207		case "TestFlushToBackend.subroutine-B":208			c.Check(timing.Count, Equals, 2)209			c.Check(timing.Min, Equals, 10.0)210			c.Check(timing.Max, Equals, 15.5)211			c.Check(timing.Sum, Equals, 25.5)212			c.Check(timing.SumSquares, Equals, 340.25)213			c.Check(timing.Median, Equals, 12.75)214			c.Check(timing.NinthDecileCount, Equals, 2)215			c.Check(timing.NinthDecileValue, Equals, 15.5)216			c.Check(timing.NinthDecileSum, Equals, 25.5)217		case "TestFlushToBackend.upandtotheright-":218			c.Check(timing.Count, Equals, 10)219			c.Check(timing.Min, Equals, 0.0)220			c.Check(timing.Max, Equals, 9.0)221			c.Check(timing.Sum, Equals, 45.0)222			c.Check(timing.SumSquares, Equals, 285.0)223			c.Check(timing.Median, Equals, 4.5)224			c.Check(timing.NinthDecileCount, Equals, 9)225			c.Check(timing.NinthDecileValue, Equals, 8.0)226			c.Check(timing.NinthDecileSum, Equals, 36.0)227		}228	}229	for _, gauge := range mockFlusher.gauges {230		nameAndSource := fmt.Sprintf("%s-%s", gauge.Name, gauge.Source)231		switch nameAndSource {232		case "TestFlushToBackend.foo-a":233			c.Check(gauge, Equals, 24.0)234		case "TestFlushToBackend.foo-b":235			c.Check(gauge, Equals, 15.5)236		case "TestFlushToBackend.bar-":237			c.Check(gauge, Equals, -1.2)238		}239	}240	// Make sure that flushing again does nothing (i.e. don't force)241	c.Assert(ssi.UpdateBackend(now, mockFlusher, nil, false), Equals, ErrStatFlushTooSoon)242}243func (s *StatStashTest) TestPeriodStart(c *C) {244	utc, _ := time.LoadLocation("UTC")245	ref := time.Date(2014, 10, 4, 12, 0, 0, 0, utc)246	c.Check(getStartOfFlushPeriod(ref, 0).Unix(), Equals, ref.Unix())247	c.Check(getStartOfFlushPeriod(ref.Add(1*time.Second), 0).Unix(), Equals, ref.Unix())248	c.Check(getStartOfFlushPeriod(ref, -1).Unix(), Equals, ref.Add(defaultAggregationPeriod*time.Duration(-1)).Unix())249	c.Check(getStartOfFlushPeriod(ref.Add(1*time.Second), -1).Unix(), Equals, ref.Add(defaultAggregationPeriod*time.Duration(-1)).Unix())250}251type StatSamplingTestImplementation struct {252	randGen *rand.Rand253}254func (c StatSamplingTestImplementation) IncrementCounter(name, source string) error { return nil }255func (c StatSamplingTestImplementation) IncrementCounterBy(name, source string, delta int64) error {256	return nil257}258func (c StatSamplingTestImplementation) RecordGauge(name, source string, value float64) error {259	return nil260}261func (c StatSamplingTestImplementation) RecordTiming(name, source string, value, sampleRate float64) error {262	// We use this code copied from the other code to prevent actually having to263	// use memcache and blowing up the test suite.264	if sampleRate < 1.0 && c.randGen.Float64() > sampleRate {265		return ErrStatNotSampled // do nothing here, as we are sampling266	}267	return nil268}269func (c StatSamplingTestImplementation) UpdateBackend(periodStart time.Time, flusher StatsFlusher, cfg *FlusherConfig, force bool) error {270	return nil271}272func (s *StatStashTest) TestTimingSampling(c *C) {273	ssi := StatSamplingTestImplementation{rand.New(rand.NewSource(time.Now().UnixNano()))}274	// Let's record a million timings at a sample rate of 0.0001.275	// We'll expect 100 samples, give or take 50276	statsSampled := 0277	for i := 0; i < 1000000; i++ {278		if err := ssi.RecordTiming("yowza", "fast", 1, 0.0001); err == ErrStatNotSampled {279			continue280		} else if err != nil {281			// unexpected error, fail282			c.Fail()283		} else {284			statsSampled++285		}286	}287	fmt.Printf("Stats sampled %d\n", statsSampled)288	c.Assert(math.Abs(100.0-float64(statsSampled)) <= 50.0, Equals, true)289}...

telemetry.go

Source:telemetry.go

...105	case LegacyGaugeEndpoint:106		e.legacyGauge.incr(status)107	}108}109// PeekEndpointStatus increments the count of a specific status code for a specific endpoint110func (e *EndpointStatusCodes) PeekEndpointStatus(endpoint int) map[int]int64 {111	switch endpoint {112	case AuthEndpoint:113		return e.auth.peek()114	case SplitChangesEndpoint:115		return e.splitChanges.peek()116	case SegmentChangesEndpoint:117		return e.segmentChanges.peek()118	case MySegmentsEndpoint:119		return e.mySegments.peek()120	case ImpressionsBulkEndpoint:121		return e.impressionsBulk.peek()122	case ImpressionsBulkBeaconEndpoint:123		return e.impressionsBulkBeacon.peek()124	case ImpressionsCountEndpoint:125		return e.impressionsCount.peek()126	case ImpressionsCountBeaconEndpoint:127		return e.impressionsCountBeacon.peek()128	case EventsBulkEndpoint:129		return e.eventsBulk.peek()130	case EventsBulkBeaconEndpoint:131		return e.eventsBulkBeacon.peek()132	case TelemetryConfigEndpoint:133		return e.telemetryConfig.peek()134	case TelemetryRuntimeEndpoint:135		return e.telemetryRuntime.peek()136	case LegacyTimeEndpoint:137		return e.legacyTime.peek()138	case LegacyTimesEndpoint:139		return e.legacyTimes.peek()140	case LegacyCounterEndpoint:141		return e.legacyCounter.peek()142	case LegacyCountersEndpoint:143		return e.legacyCounters.peek()144	case LegacyGaugeEndpoint:145		return e.legacyGauge.peek()146	}147	return nil148}149func newEndpointStatusCodes() EndpointStatusCodes {150	return EndpointStatusCodes{151		auth:                   newStatusCodeMap(),152		splitChanges:           newStatusCodeMap(),153		segmentChanges:         newStatusCodeMap(),154		mySegments:             newStatusCodeMap(),155		impressionsBulk:        newStatusCodeMap(),156		impressionsBulkBeacon:  newStatusCodeMap(),157		impressionsCount:       newStatusCodeMap(),158		impressionsCountBeacon: newStatusCodeMap(),159		eventsBulk:             newStatusCodeMap(),160		eventsBulkBeacon:       newStatusCodeMap(),161		telemetryConfig:        newStatusCodeMap(),162		telemetryRuntime:       newStatusCodeMap(),163		legacyTime:             newStatusCodeMap(),164		legacyTimes:            newStatusCodeMap(),165		legacyCounter:          newStatusCodeMap(),166		legacyCounters:         newStatusCodeMap(),167		legacyGauge:            newStatusCodeMap(),168	}169}170// ProxyEndpointLatencies defines an interface to access proxy server endpoint latencies numbers171type ProxyEndpointLatencies interface {172	PeekEndpointLatency(endpoint int) []int64173	RecordEndpointLatency(endpoint int, latency time.Duration)174}175// ProxyEndpointLatenciesImpl keep track of the latency introudiced by each proxy endpoint176type ProxyEndpointLatenciesImpl struct {177	auth                   inmemory.AtomicInt64Slice178	splitChanges           inmemory.AtomicInt64Slice179	segmentChanges         inmemory.AtomicInt64Slice180	mySegments             inmemory.AtomicInt64Slice181	impressionsBulk        inmemory.AtomicInt64Slice182	impressionsBulkBeacon  inmemory.AtomicInt64Slice183	impressionsCount       inmemory.AtomicInt64Slice184	impressionsCountBeacon inmemory.AtomicInt64Slice185	eventsBulk             inmemory.AtomicInt64Slice186	eventsBulkBeacon       inmemory.AtomicInt64Slice187	telemetryConfig        inmemory.AtomicInt64Slice188	telemetryRuntime       inmemory.AtomicInt64Slice189	legacyTime             inmemory.AtomicInt64Slice190	legacyTimes            inmemory.AtomicInt64Slice191	legacyCounter          inmemory.AtomicInt64Slice192	legacyCounters         inmemory.AtomicInt64Slice193	legacyGauge            inmemory.AtomicInt64Slice194}195// RecordEndpointLatency records a (bucketed) latency for a specific endpoint196func (p *ProxyEndpointLatenciesImpl) RecordEndpointLatency(endpoint int, latency time.Duration) {197	bucket := telemetry.Bucket(latency.Milliseconds())198	switch endpoint {199	case AuthEndpoint:200		p.auth.Incr(bucket)201	case SplitChangesEndpoint:202		p.splitChanges.Incr(bucket)203	case SegmentChangesEndpoint:204		p.segmentChanges.Incr(bucket)205	case MySegmentsEndpoint:206		p.mySegments.Incr(bucket)207	case ImpressionsBulkEndpoint:208		p.impressionsBulk.Incr(bucket)209	case ImpressionsBulkBeaconEndpoint:210		p.impressionsBulkBeacon.Incr(bucket)211	case ImpressionsCountEndpoint:212		p.impressionsCount.Incr(bucket)213	case ImpressionsCountBeaconEndpoint:214		p.impressionsCountBeacon.Incr(bucket)215	case EventsBulkEndpoint:216		p.eventsBulk.Incr(bucket)217	case EventsBulkBeaconEndpoint:218		p.eventsBulkBeacon.Incr(bucket)219	case TelemetryConfigEndpoint:220		p.telemetryRuntime.Incr(bucket)221	case TelemetryRuntimeEndpoint:222		p.telemetryConfig.Incr(bucket)223	case LegacyTimeEndpoint:224		p.legacyTime.Incr(bucket)225	case LegacyTimesEndpoint:226		p.legacyTimes.Incr(bucket)227	case LegacyCounterEndpoint:228		p.legacyCounter.Incr(bucket)229	case LegacyCountersEndpoint:230		p.legacyCounters.Incr(bucket)231	case LegacyGaugeEndpoint:232		p.legacyGauge.Incr(bucket)233	}234}235// PeekEndpointLatency records a (bucketed) latency for a specific endpoint236func (p *ProxyEndpointLatenciesImpl) PeekEndpointLatency(endpoint int) []int64 {237	switch endpoint {238	case AuthEndpoint:239		return p.auth.ReadAll()240	case SplitChangesEndpoint:241		return p.splitChanges.ReadAll()242	case SegmentChangesEndpoint:243		return p.segmentChanges.ReadAll()244	case MySegmentsEndpoint:245		return p.mySegments.ReadAll()246	case ImpressionsBulkEndpoint:247		return p.impressionsBulk.ReadAll()248	case ImpressionsBulkBeaconEndpoint:249		return p.impressionsBulkBeacon.ReadAll()250	case ImpressionsCountEndpoint:251		return p.impressionsCount.ReadAll()252	case ImpressionsCountBeaconEndpoint:253		return p.impressionsCountBeacon.ReadAll()254	case EventsBulkEndpoint:255		return p.eventsBulk.ReadAll()256	case EventsBulkBeaconEndpoint:257		return p.eventsBulkBeacon.ReadAll()258	case TelemetryConfigEndpoint:259		return p.telemetryRuntime.ReadAll()260	case TelemetryRuntimeEndpoint:261		return p.telemetryConfig.ReadAll()262	case LegacyTimeEndpoint:263		return p.legacyTime.ReadAll()264	case LegacyTimesEndpoint:265		return p.legacyTimes.ReadAll()266	case LegacyCounterEndpoint:267		return p.legacyCounter.ReadAll()268	case LegacyCountersEndpoint:269		return p.legacyCounters.ReadAll()270	case LegacyGaugeEndpoint:271		return p.legacyGauge.ReadAll()272	}273	return nil274}275// newProxyEndpointLatenciesImpl creates a new latency tracker276func newProxyEndpointLatenciesImpl() ProxyEndpointLatenciesImpl {277	init := func() inmemory.AtomicInt64Slice {278		toRet, _ := inmemory.NewAtomicInt64Slice(telemetry.LatencyBucketCount)279		return toRet280	}281	return ProxyEndpointLatenciesImpl{282		auth:                   init(),283		splitChanges:           init(),284		segmentChanges:         init(),285		mySegments:             init(),286		impressionsBulk:        init(),287		impressionsBulkBeacon:  init(),288		impressionsCount:       init(),289		impressionsCountBeacon: init(),290		eventsBulk:             init(),291		eventsBulkBeacon:       init(),292		telemetryConfig:        init(),293		telemetryRuntime:       init(),294		legacyTime:             init(),295		legacyTimes:            init(),296		legacyCounter:          init(),297		legacyCounters:         init(),298		legacyGauge:            init(),299	}300}301// ProxyTelemetryPeeker is able to peek at locally captured metrics302type ProxyTelemetryPeeker interface {303	PeekEndpointLatency(resource int) []int64304	PeekEndpointStatus(resource int) map[int]int64305}306// ProxyEndpointTelemetry defines the interface that endpoints use to capture latency & status codes307type ProxyEndpointTelemetry interface {308	ProxyTelemetryPeeker309	RecordEndpointLatency(endpoint int, latency time.Duration)310	IncrEndpointStatus(endpoint int, status int)311}312// ProxyTelemetryFacade defines the set of methods required to accept local telemetry as well as runtime telemetry313type ProxyTelemetryFacade interface {314	storage.TelemetryStorage315	storage.TelemetryPeeker316	ProxyEndpointTelemetry317}318// ProxyTelemetryFacadeImpl exposes local telemetry functionality319type ProxyTelemetryFacadeImpl struct {320	ProxyEndpointLatenciesImpl321	EndpointStatusCodes322	*inmemory.TelemetryStorage323}324// NewProxyTelemetryFacade instantiates a local telemetry facade325func NewProxyTelemetryFacade() *ProxyTelemetryFacadeImpl {326	ts, _ := inmemory.NewTelemetryStorage()327	return &ProxyTelemetryFacadeImpl{328		ProxyEndpointLatenciesImpl: newProxyEndpointLatenciesImpl(),329		EndpointStatusCodes:        newEndpointStatusCodes(),330		TelemetryStorage:           ts,331	}332}333// Ensure interface compliance334var _ ProxyTelemetryFacade = (*ProxyTelemetryFacadeImpl)(nil)335var _ storage.TelemetryStorage = (*ProxyTelemetryFacadeImpl)(nil)336var _ storage.TelemetryPeeker = (*ProxyTelemetryFacadeImpl)(nil)...

formatSpecification.go

Source:formatSpecification.go

...26	if !strings.HasSuffix(formatter.buffer.String(), "\n\n") {27		formatter.buffer.WriteString("\n")28	}29	formatter.buffer.WriteString(FormatTags(tags))30	if formatter.itemQueue.Peek() != nil && (formatter.itemQueue.Peek().Kind() != gauge.CommentKind || strings.TrimSpace(formatter.itemQueue.Peek().(*gauge.Comment).Value) != "") {31		formatter.buffer.WriteString("\n")32	}33}34func (formatter *formatter) Table(table *gauge.Table) {35	formatter.buffer.WriteString(strings.TrimPrefix(FormatTable(table), "\n"))36}37func (formatter *formatter) DataTable(dataTable *gauge.DataTable) {38	if !dataTable.IsExternal {39		formatter.Table(dataTable.Table)40	} else {41		formatter.buffer.WriteString(formatExternalDataTable(dataTable))42	}43}44func (formatter *formatter) TearDown(t *gauge.TearDown) {...

Peek

Using AI Code Generation

1import (2func main() {3	gauge := prometheus.NewGauge(prometheus.GaugeOpts{4	})5	gauge.Set(10)6	fmt.Println(gauge.Get())7	fmt.Println(gauge.Peek())8}

Peek

Using AI Code Generation

1import (2func main() {3 g := metrics.NewGauge()4 g.Update(100)5 fmt.Println(g.Peek())6}

Peek

Using AI Code Generation

1import (2func main() {3	g := metrics.NewGauge()4	g.Update(100)5	fmt.Println(g.Value())6	g.Update(200)7	fmt.Println(g.Value())8	g.Update(300)9	fmt.Println(g.Value())10	g.Update(400)11	fmt.Println(g.Value())12	g.Update(500)13	fmt.Println(g.Value())14}

Peek

Using AI Code Generation

1import (2func main() {3	g := metrics.NewGauge()4	g.Update(100)5	fmt.Println("Gauge value:", g.Value())6	fmt.Println("Gauge value:", g.Peek())7}

Peek

Using AI Code Generation

1import (2func main() {3	g := gauge.NewGauge()4	g.Add(10)5	g.Add(20)6	fmt.Println(g.Peek())7	g.Add(30)8	fmt.Println(g.Peek())9	g.Add(40)10	fmt.Println(g.Peek())11	g.Add(50)12	fmt.Println(g.Peek())13}

Peek

Using AI Code Generation

1import (2func main() {3	g := gauge.NewGauge()4	g.Add(5)5	g.Add(10)6	g.Add(20)7	fmt.Printf("The current value is %d\n", g.Peek())8}

Peek

Using AI Code Generation

1import "fmt"2func main() {3 g := new(Gauge)4 g.Init(100)5 fmt.Println(g.Peek())6}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.