How to use RegisterBuiltinMetrics method of metrics Package

Best K6 code snippet using metrics.RegisterBuiltinMetrics

module_loading_test.go

Source:module_loading_test.go

...96		`, fs, lib.RuntimeOptions{CompatibilityMode: null.StringFrom("extended")})97			require.NoError(t, err)98			arc := r1.MakeArchive()99			registry := metrics.NewRegistry()100			builtinMetrics := metrics.RegisterBuiltinMetrics(registry)101			r2, err := NewFromArchive(&lib.RuntimeState{102				Logger:         testutils.NewLogger(t),103				BuiltinMetrics: builtinMetrics,104				Registry:       registry,105			}, arc)106			require.NoError(t, err)107			runners := map[string]*Runner{"Source": r1, "Archive": r2}108			for name, r := range runners {109				r := r110				t.Run(name, func(t *testing.T) {111					t.Parallel()112					ch := newDevNullSampleChannel()113					defer close(ch)114					initVU, err := r.NewVU(1, 1, ch)115					ctx, cancel := context.WithCancel(context.Background())116					defer cancel()117					vu := initVU.Activate(&lib.VUActivationParams{RunContext: ctx})118					require.NoError(t, err)119					err = vu.RunOnce()120					require.NoError(t, err)121				})122			}123		})124	}125}126func TestLoadExportsIsUsableInModule(t *testing.T) {127	t.Parallel()128	fs := afero.NewMemMapFs()129	require.NoError(t, afero.WriteFile(fs, "/A.js", []byte(`130		export function A() {131			return "A";132		}133		export function B() {134			return exports.A() + "B";135		}136	`), os.ModePerm))137	r1, err := getSimpleRunner(t, "/script.js", `138			import { A, B } from "./A.js";139			export default function(data) {140				if (A() != "A") {141					throw new Error("wrong value of A() " + A());142				}143				if (B() != "AB") {144					throw new Error("wrong value of B() " + B());145				}146			}147		`, fs, lib.RuntimeOptions{CompatibilityMode: null.StringFrom("extended")})148	require.NoError(t, err)149	arc := r1.MakeArchive()150	registry := metrics.NewRegistry()151	builtinMetrics := metrics.RegisterBuiltinMetrics(registry)152	r2, err := NewFromArchive(153		&lib.RuntimeState{154			Logger:         testutils.NewLogger(t),155			BuiltinMetrics: builtinMetrics,156			Registry:       registry,157		}, arc)158	require.NoError(t, err)159	runners := map[string]*Runner{"Source": r1, "Archive": r2}160	for name, r := range runners {161		r := r162		t.Run(name, func(t *testing.T) {163			t.Parallel()164			ch := newDevNullSampleChannel()165			defer close(ch)166			initVU, err := r.NewVU(1, 1, ch)167			ctx, cancel := context.WithCancel(context.Background())168			defer cancel()169			vu := initVU.Activate(&lib.VUActivationParams{RunContext: ctx})170			require.NoError(t, err)171			err = vu.RunOnce()172			require.NoError(t, err)173		})174	}175}176func TestLoadDoesntBreakHTTPGet(t *testing.T) {177	t.Parallel()178	// This test that functions such as http.get which require context still work if they are called179	// inside script that is imported180	tb := httpmultibin.NewHTTPMultiBin(t)181	fs := afero.NewMemMapFs()182	require.NoError(t, afero.WriteFile(fs, "/A.js", []byte(tb.Replacer.Replace(`183		import http from "k6/http";184		export function A() {185			return http.get("HTTPBIN_URL/get");186		}187	`)), os.ModePerm))188	r1, err := getSimpleRunner(t, "/script.js", `189			import { A } from "./A.js";190			export default function(data) {191				let resp = A();192				if (resp.status != 200) {193					throw new Error("wrong status "+ resp.status);194				}195			}196		`, fs, lib.RuntimeOptions{CompatibilityMode: null.StringFrom("extended")})197	require.NoError(t, err)198	require.NoError(t, r1.SetOptions(lib.Options{Hosts: tb.Dialer.Hosts}))199	arc := r1.MakeArchive()200	registry := metrics.NewRegistry()201	builtinMetrics := metrics.RegisterBuiltinMetrics(registry)202	r2, err := NewFromArchive(203		&lib.RuntimeState{204			Logger:         testutils.NewLogger(t),205			BuiltinMetrics: builtinMetrics,206			Registry:       registry,207		}, arc)208	require.NoError(t, err)209	runners := map[string]*Runner{"Source": r1, "Archive": r2}210	for name, r := range runners {211		r := r212		t.Run(name, func(t *testing.T) {213			t.Parallel()214			ch := newDevNullSampleChannel()215			defer close(ch)216			initVU, err := r.NewVU(1, 1, ch)217			require.NoError(t, err)218			ctx, cancel := context.WithCancel(context.Background())219			defer cancel()220			vu := initVU.Activate(&lib.VUActivationParams{RunContext: ctx})221			err = vu.RunOnce()222			require.NoError(t, err)223		})224	}225}226func TestLoadGlobalVarsAreNotSharedBetweenVUs(t *testing.T) {227	t.Parallel()228	fs := afero.NewMemMapFs()229	require.NoError(t, afero.WriteFile(fs, "/A.js", []byte(`230		var globalVar = 0;231		export function A() {232			globalVar += 1233			return globalVar;234		}235	`), os.ModePerm))236	r1, err := getSimpleRunner(t, "/script.js", `237			import { A } from "./A.js";238			export default function(data) {239				var a = A();240				if (a == 1) {241					a = 2;242				} else {243					throw new Error("wrong value of a " + a);244				}245			}246		`, fs, lib.RuntimeOptions{CompatibilityMode: null.StringFrom("extended")})247	require.NoError(t, err)248	arc := r1.MakeArchive()249	registry := metrics.NewRegistry()250	builtinMetrics := metrics.RegisterBuiltinMetrics(registry)251	r2, err := NewFromArchive(252		&lib.RuntimeState{253			Logger:         testutils.NewLogger(t),254			BuiltinMetrics: builtinMetrics,255			Registry:       registry,256		}, arc)257	require.NoError(t, err)258	runners := map[string]*Runner{"Source": r1, "Archive": r2}259	for name, r := range runners {260		r := r261		t.Run(name, func(t *testing.T) {262			t.Parallel()263			ch := newDevNullSampleChannel()264			defer close(ch)265			initVU, err := r.NewVU(1, 1, ch)266			require.NoError(t, err)267			ctx, cancel := context.WithCancel(context.Background())268			defer cancel()269			vu := initVU.Activate(&lib.VUActivationParams{RunContext: ctx})270			err = vu.RunOnce()271			require.NoError(t, err)272			// run a second VU273			initVU, err = r.NewVU(2, 2, ch)274			require.NoError(t, err)275			ctx, cancel = context.WithCancel(context.Background())276			defer cancel()277			vu = initVU.Activate(&lib.VUActivationParams{RunContext: ctx})278			err = vu.RunOnce()279			require.NoError(t, err)280		})281	}282}283func TestLoadCycle(t *testing.T) {284	t.Parallel()285	// This is mostly the example from https://hacks.mozilla.org/2018/03/es-modules-a-cartoon-deep-dive/286	fs := afero.NewMemMapFs()287	require.NoError(t, afero.WriteFile(fs, "/counter.js", []byte(`288			let message = require("./main.js").message;289			exports.count = 5;290			export function a() {291				return message;292			}293	`), os.ModePerm))294	require.NoError(t, afero.WriteFile(fs, "/main.js", []byte(`295			let counter = require("./counter.js");296			let count = counter.count;297			let a = counter.a;298			let message= "Eval complete";299			exports.message = message;300			export default function() {301				if (count != 5) {302					throw new Error("Wrong value of count "+ count);303				}304				let aMessage = a();305				if (aMessage != message) {306					throw new Error("Wrong value of a() "+ aMessage);307				}308			}309	`), os.ModePerm))310	data, err := afero.ReadFile(fs, "/main.js")311	require.NoError(t, err)312	r1, err := getSimpleRunner(t, "/main.js", string(data), fs, lib.RuntimeOptions{CompatibilityMode: null.StringFrom("extended")})313	require.NoError(t, err)314	arc := r1.MakeArchive()315	registry := metrics.NewRegistry()316	builtinMetrics := metrics.RegisterBuiltinMetrics(registry)317	r2, err := NewFromArchive(318		&lib.RuntimeState{319			Logger:         testutils.NewLogger(t),320			BuiltinMetrics: builtinMetrics,321			Registry:       registry,322		}, arc)323	require.NoError(t, err)324	runners := map[string]*Runner{"Source": r1, "Archive": r2}325	for name, r := range runners {326		r := r327		t.Run(name, func(t *testing.T) {328			t.Parallel()329			ch := newDevNullSampleChannel()330			defer close(ch)331			initVU, err := r.NewVU(1, 1, ch)332			require.NoError(t, err)333			ctx, cancel := context.WithCancel(context.Background())334			defer cancel()335			vu := initVU.Activate(&lib.VUActivationParams{RunContext: ctx})336			err = vu.RunOnce()337			require.NoError(t, err)338		})339	}340}341func TestLoadCycleBinding(t *testing.T) {342	t.Parallel()343	// This is mostly the example from344	// http://2ality.com/2015/07/es6-module-exports.html#why-export-bindings345	fs := afero.NewMemMapFs()346	require.NoError(t, afero.WriteFile(fs, "/a.js", []byte(`347		import {bar} from './b.js';348		export function foo(a) {349				if (a !== undefined) {350					return "foo" + a;351				}352				return "foo" + bar(3);353		}354	`), os.ModePerm))355	require.NoError(t, afero.WriteFile(fs, "/b.js", []byte(`356		import {foo} from './a.js';357		export function bar(a) {358				if (a !== undefined) {359					return "bar" + a;360				}361				return "bar" + foo(5);362			}363	`), os.ModePerm))364	r1, err := getSimpleRunner(t, "/main.js", `365			import {foo} from './a.js';366			import {bar} from './b.js';367			export default function() {368				let fooMessage = foo();369				if (fooMessage != "foobar3") {370					throw new Error("Wrong value of foo() "+ fooMessage);371				}372				let barMessage = bar();373				if (barMessage != "barfoo5") {374					throw new Error("Wrong value of bar() "+ barMessage);375				}376			}377		`, fs, lib.RuntimeOptions{CompatibilityMode: null.StringFrom("extended")})378	require.NoError(t, err)379	arc := r1.MakeArchive()380	registry := metrics.NewRegistry()381	builtinMetrics := metrics.RegisterBuiltinMetrics(registry)382	r2, err := NewFromArchive(383		&lib.RuntimeState{384			Logger:         testutils.NewLogger(t),385			BuiltinMetrics: builtinMetrics,386			Registry:       registry,387		}, arc)388	require.NoError(t, err)389	runners := map[string]*Runner{"Source": r1, "Archive": r2}390	for name, r := range runners {391		r := r392		t.Run(name, func(t *testing.T) {393			t.Parallel()394			ch := newDevNullSampleChannel()395			defer close(ch)396			initVU, err := r.NewVU(1, 1, ch)397			require.NoError(t, err)398			ctx, cancel := context.WithCancel(context.Background())399			defer cancel()400			vu := initVU.Activate(&lib.VUActivationParams{RunContext: ctx})401			err = vu.RunOnce()402			require.NoError(t, err)403		})404	}405}406func TestBrowserified(t *testing.T) {407	t.Parallel()408	fs := afero.NewMemMapFs()409	//nolint: lll410	require.NoError(t, afero.WriteFile(fs, "/browserified.js", []byte(`411		(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.npmlibs = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){412		module.exports.A = function () {413			return "a";414		}415		},{}],2:[function(require,module,exports){416		exports.B = function() {417		return "b";418		}419		},{}],3:[function(require,module,exports){420		exports.alpha = require('./a.js');421		exports.bravo = require('./b.js');422		},{"./a.js":1,"./b.js":2}]},{},[3])(3)423		});424	`), os.ModePerm))425	r1, err := getSimpleRunner(t, "/script.js", `426			import {alpha, bravo } from "./browserified.js";427			export default function(data) {428				if (alpha.A === undefined) {429					throw new Error("alpha.A is undefined");430				}431				if (alpha.A() != "a") {432					throw new Error("alpha.A() != 'a'    (" + alpha.A() + ") != 'a'");433				}434				if (bravo.B === undefined) {435					throw new Error("bravo.B is undefined");436				}437				if (bravo.B() != "b") {438					throw new Error("bravo.B() != 'b'    (" + bravo.B() + ") != 'b'");439				}440			}441		`, fs, lib.RuntimeOptions{CompatibilityMode: null.StringFrom("extended")})442	require.NoError(t, err)443	arc := r1.MakeArchive()444	registry := metrics.NewRegistry()445	builtinMetrics := metrics.RegisterBuiltinMetrics(registry)446	r2, err := NewFromArchive(447		&lib.RuntimeState{448			Logger:         testutils.NewLogger(t),449			BuiltinMetrics: builtinMetrics,450			Registry:       registry,451		}, arc)452	require.NoError(t, err)453	runners := map[string]*Runner{"Source": r1, "Archive": r2}454	for name, r := range runners {455		r := r456		t.Run(name, func(t *testing.T) {457			t.Parallel()458			ch := make(chan metrics.SampleContainer, 100)459			defer close(ch)460			initVU, err := r.NewVU(1, 1, ch)461			require.NoError(t, err)462			ctx, cancel := context.WithCancel(context.Background())463			defer cancel()464			vu := initVU.Activate(&lib.VUActivationParams{RunContext: ctx})465			err = vu.RunOnce()466			require.NoError(t, err)467		})468	}469}470func TestLoadingUnexistingModuleDoesntPanic(t *testing.T) {471	t.Parallel()472	fs := afero.NewMemMapFs()473	data := `var b;474			try {475				b = eval("require('buffer')");476			} catch (err) {477				b = "correct";478			}479			exports.default = function() {480				if (b != "correct") {481					throw new Error("wrong b "+ JSON.stringify(b));482				}483			}`484	require.NoError(t, afero.WriteFile(fs, "/script.js", []byte(data), 0o644))485	r1, err := getSimpleRunner(t, "/script.js", data, fs)486	require.NoError(t, err)487	arc := r1.MakeArchive()488	buf := &bytes.Buffer{}489	require.NoError(t, arc.Write(buf))490	arc, err = lib.ReadArchive(buf)491	require.NoError(t, err)492	registry := metrics.NewRegistry()493	builtinMetrics := metrics.RegisterBuiltinMetrics(registry)494	r2, err := NewFromArchive(495		&lib.RuntimeState{496			Logger:         testutils.NewLogger(t),497			BuiltinMetrics: builtinMetrics,498			Registry:       registry,499		}, arc)500	require.NoError(t, err)501	runners := map[string]*Runner{"Source": r1, "Archive": r2}502	for name, r := range runners {503		r := r504		t.Run(name, func(t *testing.T) {505			t.Parallel()506			ch := newDevNullSampleChannel()507			defer close(ch)508			initVU, err := r.NewVU(1, 1, ch)509			require.NoError(t, err)510			ctx, cancel := context.WithCancel(context.Background())511			defer cancel()512			vu := initVU.Activate(&lib.VUActivationParams{RunContext: ctx})513			err = vu.RunOnce()514			require.NoError(t, err)515		})516	}517}518func TestLoadingSourceMapsDoesntErrorOut(t *testing.T) {519	t.Parallel()520	fs := afero.NewMemMapFs()521	data := `exports.default = function() {}522//# sourceMappingURL=test.min.js.map`523	require.NoError(t, afero.WriteFile(fs, "/script.js", []byte(data), 0o644))524	r1, err := getSimpleRunner(t, "/script.js", data, fs)525	require.NoError(t, err)526	arc := r1.MakeArchive()527	buf := &bytes.Buffer{}528	require.NoError(t, arc.Write(buf))529	arc, err = lib.ReadArchive(buf)530	require.NoError(t, err)531	registry := metrics.NewRegistry()532	builtinMetrics := metrics.RegisterBuiltinMetrics(registry)533	r2, err := NewFromArchive(534		&lib.RuntimeState{535			Logger:         testutils.NewLogger(t),536			BuiltinMetrics: builtinMetrics,537			Registry:       registry,538		}, arc)539	require.NoError(t, err)540	runners := map[string]*Runner{"Source": r1, "Archive": r2}541	for name, r := range runners {542		r := r543		t.Run(name, func(t *testing.T) {544			t.Parallel()545			ch := newDevNullSampleChannel()546			defer close(ch)...

RegisterBuiltinMetrics

Using AI Code Generation

1import (2func main() {3    promauto.NewGaugeFunc(prometheus.GaugeOpts{4    }, func() float64 {5    })6    prometheus.RegisterBuiltinMetrics()7    http.Handle("/metrics", promhttp.Handler())8    log.Fatal(http.ListenAndServe(":8080", nil))9}10go_gc_duration_seconds{quantile="0"} 3.3e-0511go_gc_duration_seconds{quantile="0.25"} 3.8e-0512go_gc_duration_seconds{quantile="0.5"} 5.5e-0513go_gc_duration_seconds{quantile="0.75"} 0.000101214go_gc_duration_seconds{quantile="1"} 0.000105515go_info{version="go1.15.6"} 1

RegisterBuiltinMetrics

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello, playground")4    prometheus.RegisterBuiltinMetrics()5    http.Handle("/metrics", promhttp.Handler())6    http.ListenAndServe(":8080", nil)7}8go_gc_duration_seconds{quantile="0"} 09go_gc_duration_seconds{quantile="0.25"} 010go_gc_duration_seconds{quantile="0.5"} 011go_gc_duration_seconds{quantile="0.75"} 012go_gc_duration_seconds{quantile="1"} 013go_info{version="go1.13.6"} 1

RegisterBuiltinMetrics

Using AI Code Generation

1import (2func main() {3	fmt.Println("Starting the application...")4	prometheus.Register(prometheus.NewProcessCollector(prometheus.ProcessCollectorOpts{}))5	prometheus.Register(prometheus.NewGoCollector())6	http.Handle("/metrics", promhttp.Handler())7	log.Fatal(http.ListenAndServe(":8080", nil))8}

RegisterBuiltinMetrics

Using AI Code Generation

1import (2func main() {3	prometheus.Register(prometheus.NewProcessCollector(prometheus.ProcessCollectorOpts{}))4	prometheus.Register(prometheus.NewGoCollector())5	promauto.NewCounter(prometheus.CounterOpts{6	}).Inc()7	promauto.NewCounter(prometheus.CounterOpts{8	}).Inc()9	promauto.NewCounter(prometheus.CounterOpts{10	}).Inc()11	promauto.NewCounter(prometheus.CounterOpts{12	}).Inc()13	promauto.NewCounter(prometheus.CounterOpts{14	}).Inc()15	promauto.NewCounter(prometheus.CounterOpts{16	}).Inc()17	promauto.NewCounter(prometheus.CounterOpts{18	}).Inc()19	promauto.NewCounter(prometheus.CounterOpts{20	}).Inc()21	http.Handle("/metrics", promhttp.Handler())22	fmt.Println("Starting Server at Port 8080")23	log.Fatal(http.ListenAndServe(":8080", nil))24}

RegisterBuiltinMetrics

Using AI Code Generation

1import (2func main() {3	prometheus.RegisterBuiltinMetrics()4	http.Handle("/metrics", promhttp.Handler())5	http.ListenAndServe(":8080", nil)6}7import (8func main() {9	counter := prometheus.NewCounter(prometheus.CounterOpts{10	})11	prometheus.Register(counter)12	http.Handle("/metrics", promhttp.Handler())13	http.ListenAndServe(":8080", nil)14}15import (16func main() {17	counter := prometheus.NewCounter(prometheus.CounterOpts{18	})19	prometheus.Register(counter)20	prometheus.Unregister(counter)21	http.Handle("/metrics", promhttp.Handler())22	http.ListenAndServe(":8080", nil)23}24import (25func main() {26	counter := prometheus.NewCounter(prometheus.CounterOpts{27	})28	prometheus.Register(counter)29	prometheus.DefaultGatherer.Gather()30	http.Handle("/metrics", promhttp.Handler())31	http.ListenAndServe(":8080", nil)32}

RegisterBuiltinMetrics

Using AI Code Generation

1import (2func main() {3    metrics.RegisterBuiltinMetrics()4    r := mux.NewRouter()5    web.Init(r)6    http.Handle("/", r)7    log.Fatal(http.ListenAndServe(":8080", nil))8}9import (10func main() {11    metrics.RegisterBuiltinMetrics()12    r := mux.NewRouter()13    web.Init(r)14    http.Handle("/", r)15    log.Fatal(http.ListenAndServe(":8080", nil))16}17import (18func main() {19    metrics.RegisterBuiltinMetrics()20    r := mux.NewRouter()21    web.Init(r)22    http.Handle("/", r)23    log.Fatal(http.ListenAndServe(":8080", nil))24}

RegisterBuiltinMetrics

Using AI Code Generation

1{"level":"info","ts":1566319434.732097,"caller":"metrics/metrics.go:109","msg":"Metrics Service started","config":{"configMapName":"metrics-config","configMapNamespace":"default"}}2{"level":"info","ts":1566319434.732184,"caller":"metrics/metrics.go:115","msg":"Metrics Service started","config":{"configMapName":"metrics-config","configMapNamespace":"default"}}3{"level":"info","ts":1566319434.732198,"caller":"metrics/metrics.go:121","msg":"Metrics Service started","config":{"configMapName":"metrics-config","configMapNamespace":"default"}}4import (5var (6	counter = promauto.NewCounter(prometheus.CounterOpts{7	})8func main() {9	logger, err := zap.NewDevelopment()10	if err != nil {11		log.Fatalf("failed to initialize zap logger: %v

RegisterBuiltinMetrics

Using AI Code Generation

1import (2func main() {3	r := prometheus.NewRegistry()4	r.MustRegister(5		promauto.NewCounter(prometheus.CounterOpts{6		}),7		promauto.NewGauge(prometheus.GaugeOpts{8		}),9		promauto.NewHistogram(prometheus.HistogramOpts{10			Buckets: []float64{0.05, 0.1, 0.2, 0.5, 1, 2},11		}),12	r.MustRegister(prometheus.NewGoCollector())13	r.MustRegister(prometheus.NewProcessCollector(prometheus.ProcessCollectorOpts{}))14	http.Handle("/metrics", promhttp.HandlerFor(r, promhttp.HandlerOpts{}))15}16import (17func main() {18	r := prometheus.NewRegistry()19	r.MustRegister(20		promauto.NewCounter(prometheus.CounterOpts{21		}),22		promauto.NewGauge(prometheus.GaugeOpts{23		}),24		promauto.NewHistogram(prometheus.HistogramOpts{

RegisterBuiltinMetrics

Using AI Code Generation

1import (2func init() {3	prometheus.MustRegister(counters["my_counter"])4	prometheus.MustRegister(gauges["my_gauge"])5	prometheus.MustRegister(histograms["my_histogram"])6}7import (8func init() {9	prometheus.MustRegister(counters["my_counter"])10	prometheus.MustRegister(gauges["my_gauge"])11	prometheus.MustRegister(histograms["my_histogram"])12}13import (14func init() {15	prometheus.MustRegister(counters["my_counter"])16	prometheus.MustRegister(gauges["my_gauge"])17	prometheus.MustRegister(histograms["my_histogram"])18}19import (20func init() {21	prometheus.MustRegister(counters["my_counter"])22	prometheus.MustRegister(gauges["my_gauge"])23	prometheus.MustRegister(histograms["my_histogram"])24}25import (26func init() {27	prometheus.MustRegister(counters["my_counter"])28	prometheus.MustRegister(gauges["my_gauge"])29	prometheus.MustRegister(histograms["my_histogram"])30}

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