How to use InitEnv method of js Package

Best K6 code snippet using js.InitEnv

client.go

Source:client.go Github

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...33func (c *Client) Load(importPaths []string, filenames ...string) ([]MethodInfo, error) {34 if c.vu.State() != nil {35 return nil, errors.New("load must be called in the init context")36 }37 initEnv := c.vu.InitEnv()38 if initEnv == nil {39 return nil, errors.New("missing init environment")40 }41 // If no import paths are specified, use the current working directory42 if len(importPaths) == 0 {43 importPaths = append(importPaths, initEnv.CWD.Path)44 }45 parser := protoparse.Parser{46 ImportPaths: importPaths,47 InferImportPaths: false,48 Accessor: protoparse.FileAccessor(func(filename string) (io.ReadCloser, error) {49 absFilePath := initEnv.GetAbsFilePath(filename)50 return initEnv.FileSystems["file"].Open(absFilePath)51 }),...

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metrics_test.go

Source:metrics_test.go Github

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...60 rt := goja.New()61 rt.SetFieldNameMapper(common.FieldNameMapper{})62 mii := &modulestest.InstanceCore{63 Runtime: rt,64 InitEnv: &common.InitEnvironment{Registry: metrics.NewRegistry()},65 Ctx: context.Background(),66 }67 m, ok := New().NewModuleInstance(mii).(*ModuleInstance)68 require.True(t, ok)69 require.NoError(t, rt.Set("metrics", m.GetExports().Named))70 root, _ := lib.NewGroup("", nil)71 child, _ := root.Group("child")72 samples := make(chan stats.SampleContainer, 1000)73 state := &lib.State{74 Options: lib.Options{SystemTags: stats.NewSystemTagSet(stats.TagGroup), Throw: null.BoolFrom(true)},75 Group: root,76 Samples: samples,77 Tags: map[string]string{"group": root.Path},78 }79 isTimeString := ""80 if isTime {81 isTimeString = `, true`82 }83 _, err := rt.RunString(fmt.Sprintf(`var m = new metrics.%s("my_metric"%s)`, fn, isTimeString))84 require.NoError(t, err)85 t.Run("ExitInit", func(t *testing.T) {86 mii.State = state87 mii.InitEnv = nil88 _, err := rt.RunString(fmt.Sprintf(`new metrics.%s("my_metric")`, fn))89 assert.Contains(t, err.Error(), "metrics must be declared in the init context")90 })91 groups := map[string]*lib.Group{92 "Root": root,93 "Child": child,94 }95 for name, g := range groups {96 name, g := name, g97 t.Run(name, func(t *testing.T) {98 state.Group = g99 state.Tags["group"] = g.Path100 for name, val := range values {101 name, val := name, val102 t.Run(name, func(t *testing.T) {103 t.Run("Simple", func(t *testing.T) {104 _, err := rt.RunString(fmt.Sprintf(`m.add(%v)`, val.JS))105 assert.NoError(t, err)106 bufSamples := stats.GetBufferedSamples(samples)107 if assert.Len(t, bufSamples, 1) {108 sample, ok := bufSamples[0].(stats.Sample)109 require.True(t, ok)110 assert.NotZero(t, sample.Time)111 assert.Equal(t, sample.Value, val.Float)112 assert.Equal(t, map[string]string{113 "group": g.Path,114 }, sample.Tags.CloneTags())115 assert.Equal(t, "my_metric", sample.Metric.Name)116 assert.Equal(t, mtyp, sample.Metric.Type)117 assert.Equal(t, valueType, sample.Metric.Contains)118 }119 })120 t.Run("Tags", func(t *testing.T) {121 _, err := rt.RunString(fmt.Sprintf(`m.add(%v, {a:1})`, val.JS))122 assert.NoError(t, err)123 bufSamples := stats.GetBufferedSamples(samples)124 if assert.Len(t, bufSamples, 1) {125 sample, ok := bufSamples[0].(stats.Sample)126 require.True(t, ok)127 assert.NotZero(t, sample.Time)128 assert.Equal(t, sample.Value, val.Float)129 assert.Equal(t, map[string]string{130 "group": g.Path,131 "a": "1",132 }, sample.Tags.CloneTags())133 assert.Equal(t, "my_metric", sample.Metric.Name)134 assert.Equal(t, mtyp, sample.Metric.Type)135 assert.Equal(t, valueType, sample.Metric.Contains)136 }137 })138 })139 }140 })141 }142 })143 }144 })145 }146}147func TestMetricGetName(t *testing.T) {148 t.Parallel()149 rt := goja.New()150 rt.SetFieldNameMapper(common.FieldNameMapper{})151 mii := &modulestest.InstanceCore{152 Runtime: rt,153 InitEnv: &common.InitEnvironment{Registry: metrics.NewRegistry()},154 Ctx: context.Background(),155 }156 m, ok := New().NewModuleInstance(mii).(*ModuleInstance)157 require.True(t, ok)158 require.NoError(t, rt.Set("metrics", m.GetExports().Named))159 v, err := rt.RunString(`160 var m = new metrics.Counter("my_metric")161 m.name162 `)163 require.NoError(t, err)164 require.Equal(t, "my_metric", v.String())165 _, err = rt.RunString(`166 "use strict";167 m.name = "something"168 `)169 require.Error(t, err)170 require.Contains(t, err.Error(), "TypeError: Cannot assign to read only property 'name'")171}172func TestMetricDuplicates(t *testing.T) {173 t.Parallel()174 rt := goja.New()175 rt.SetFieldNameMapper(common.FieldNameMapper{})176 mii := &modulestest.InstanceCore{177 Runtime: rt,178 InitEnv: &common.InitEnvironment{Registry: metrics.NewRegistry()},179 Ctx: context.Background(),180 }181 m, ok := New().NewModuleInstance(mii).(*ModuleInstance)182 require.True(t, ok)183 require.NoError(t, rt.Set("metrics", m.GetExports().Named))184 _, err := rt.RunString(`185 var m = new metrics.Counter("my_metric")186 `)187 require.NoError(t, err)188 _, err = rt.RunString(`189 var m2 = new metrics.Counter("my_metric")190 `)191 require.NoError(t, err)192 _, err = rt.RunString(`...

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loki.go

Source:loki.go Github

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...46 return &Loki{vu: vu, metrics: m}47}48func registerMetrics(vu modules.VU) (lokiMetrics, error) {49 var err error50 registry := vu.InitEnv().Registry51 m := lokiMetrics{}52 m.ClientUncompressedBytes, err = registry.NewMetric("loki_client_uncompressed_bytes", metrics.Counter, metrics.Data)53 if err != nil {54 return m, err55 }56 m.ClientLines, err = registry.NewMetric("loki_client_lines", metrics.Counter, metrics.Default)57 if err != nil {58 return m, err59 }60 m.BytesProcessedTotal, err = registry.NewMetric("loki_bytes_processed_total", metrics.Counter, metrics.Data)61 if err != nil {62 return m, err63 }64 m.BytesProcessedPerSeconds, err = registry.NewMetric("loki_bytes_processed_per_second", metrics.Trend, metrics.Data)65 if err != nil {66 return m, err67 }68 m.LinesProcessedTotal, err = registry.NewMetric("loki_lines_processed_total", metrics.Counter, metrics.Default)69 if err != nil {70 return m, err71 }72 m.LinesProcessedPerSeconds, err = registry.NewMetric("loki_lines_processed_per_second", metrics.Trend, metrics.Default)73 if err != nil {74 return m, err75 }76 return m, nil77}78// Loki is the k6 extension that can be imported in the Javascript test file.79type Loki struct {80 vu modules.VU81 metrics lokiMetrics82}83func (r *Loki) Exports() modules.Exports {84 return modules.Exports{85 Named: map[string]interface{}{86 "Config": r.config,87 "Client": r.client,88 "getLables": r.getLabels,89 },90 }91}92// config provides a constructor interface for the Config for the Javascript runtime93// ```js94// const cfg = new loki.Config(url);95// ```96func (r *Loki) config(c goja.ConstructorCall) *goja.Object {97 initEnv := r.vu.InitEnv()98 if initEnv == nil {99 common.Throw(r.vu.Runtime(), errors.New("Client constructor needs to be called in the init context"))100 }101 urlString := c.Argument(0).String()102 timeoutMs := int(c.Argument(1).ToInteger())103 protobufRatio := c.Argument(2).ToFloat()104 var cardinalities map[string]int105 rt := r.vu.Runtime()106 err := rt.ExportTo(c.Argument(3), &cardinalities)107 if err != nil {108 common.Throw(rt, fmt.Errorf("Config constructor expects map of string to integers as forth argument"))109 }110 if timeoutMs == 0 {111 timeoutMs = DefaultPushTimeout...

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