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How to use Labels method of labels Package

Best Ginkgo code snippet using labels.Labels

fmt.go

Source:fmt.go

...23//   err = br.Err() // get any error encountered during iteration24//   ...25type Reader struct {26	s      *bufio.Scanner27	labels Labels28	// permLabels are permanent labels read from the start of the29	// file or provided by AddLabels. They cannot be overridden.30	permLabels Labels31	lineNum    int32	// cached from last call to newResult, to save on allocations33	lastName       string34	lastNameLabels Labels35	// cached from the last call to Next36	result *Result37	err    error38}39// NewReader creates a BenchmarkReader that reads from r.40func NewReader(r io.Reader) *Reader {41	return &Reader{42		s:      bufio.NewScanner(r),43		labels: make(Labels),44	}45}46// AddLabels adds additional labels as if they had been read from the header of a file.47// It must be called before the first call to r.Next.48func (r *Reader) AddLabels(labels Labels) {49	r.permLabels = labels.Copy()50	for k, v := range labels {51		r.labels[k] = v52	}53}54// Result represents a single line from a benchmark file.55// All information about that line is self-contained in the Result.56// A Result is immutable once created.57type Result struct {58	// Labels is the set of persistent labels that apply to the result.59	// Labels must not be modified.60	Labels Labels61	// NameLabels is the set of ephemeral labels that were parsed62	// from the benchmark name/line.63	// NameLabels must not be modified.64	NameLabels Labels65	// LineNum is the line number on which the result was found66	LineNum int67	// Content is the verbatim input line of the benchmark file, beginning with the string "Benchmark".68	Content string69}70// SameLabels reports whether r and b have the same labels.71func (r *Result) SameLabels(b *Result) bool {72	return r.Labels.Equal(b.Labels) && r.NameLabels.Equal(b.NameLabels)73}74// Labels is a set of key-value strings.75type Labels map[string]string76// String returns the labels formatted as a comma-separated77// list enclosed in braces.78func (l Labels) String() string {79	var out bytes.Buffer80	out.WriteString("{")81	for k, v := range l {82		fmt.Fprintf(&out, "%q: %q, ", k, v)83	}84	if out.Len() > 1 {85		// Remove extra ", "86		out.Truncate(out.Len() - 2)87	}88	out.WriteString("}")89	return out.String()90}91// Keys returns a sorted list of the keys in l.92func (l Labels) Keys() []string {93	var out []string94	for k := range l {95		out = append(out, k)96	}97	sort.Strings(out)98	return out99}100// Equal reports whether l and b have the same keys and values.101func (l Labels) Equal(b Labels) bool {102	if len(l) != len(b) {103		return false104	}105	for k := range l {106		if l[k] != b[k] {107			return false108		}109	}110	return true111}112// A Printer prints a sequence of benchmark results.113type Printer struct {114	w      io.Writer115	labels Labels116}117// NewPrinter constructs a BenchmarkPrinter writing to w.118func NewPrinter(w io.Writer) *Printer {119	return &Printer{w: w}120}121// Print writes the lines necessary to recreate r.122func (p *Printer) Print(r *Result) error {123	var keys []string124	// Print removed keys first.125	for k := range p.labels {126		if r.Labels[k] == "" {127			keys = append(keys, k)128		}129	}130	sort.Strings(keys)131	for _, k := range keys {132		if _, err := fmt.Fprintf(p.w, "%s:\n", k); err != nil {133			return err134		}135	}136	// Then print new or changed keys.137	keys = keys[:0]138	for k, v := range r.Labels {139		if v != "" && p.labels[k] != v {140			keys = append(keys, k)141		}142	}143	sort.Strings(keys)144	for _, k := range keys {145		if _, err := fmt.Fprintf(p.w, "%s: %s\n", k, r.Labels[k]); err != nil {146			return err147		}148	}149	// Finally print the actual line itself.150	if _, err := fmt.Fprintf(p.w, "%s\n", r.Content); err != nil {151		return err152	}153	p.labels = r.Labels154	return nil155}156// parseNameLabels extracts extra labels from a benchmark name and sets them in labels.157func parseNameLabels(name string, labels Labels) {158	dash := strings.LastIndex(name, "-")159	if dash >= 0 {160		// Accept -N as an alias for /gomaxprocs=N161		_, err := strconv.Atoi(name[dash+1:])162		if err == nil {163			labels["gomaxprocs"] = name[dash+1:]164			name = name[:dash]165		}166	}167	parts := strings.Split(name, "/")168	labels["name"] = parts[0]169	for i, sub := range parts[1:] {170		equals := strings.Index(sub, "=")171		var key string172		if equals >= 0 {173			key, sub = sub[:equals], sub[equals+1:]174		} else {175			key = fmt.Sprintf("sub%d", i+1)176		}177		labels[key] = sub178	}179}180// newResult parses a line and returns a Result object for the line.181func (r *Reader) newResult(labels Labels, lineNum int, name, content string) *Result {182	res := &Result{183		Labels:  labels,184		LineNum: lineNum,185		Content: content,186	}187	if r.lastName != name {188		r.lastName = name189		r.lastNameLabels = make(Labels)190		parseNameLabels(name, r.lastNameLabels)191	}192	res.NameLabels = r.lastNameLabels193	return res194}195// Copy returns a new copy of the labels map, to protect against196// future modifications to labels.197func (l Labels) Copy() Labels {198	new := make(Labels)199	for k, v := range l {200		new[k] = v201	}202	return new203}204// TODO(quentin): How to represent and efficiently group multiple lines?205// Next returns the next benchmark result from the file. If there are206// no further results, it returns nil, io.EOF.207func (r *Reader) Next() bool {208	if r.err != nil {209		return false210	}211	copied := false212	havePerm := r.permLabels != nil213	for r.s.Scan() {214		r.lineNum++215		line := r.s.Text()216		if key, value, ok := parseKeyValueLine(line); ok {217			if _, ok := r.permLabels[key]; ok {218				continue219			}220			if !copied {221				copied = true222				r.labels = r.labels.Copy()223			}224			// TODO(quentin): Spec says empty value is valid, but225			// we need a way to cancel previous labels, so we'll226			// treat an empty value as a removal.227			if value == "" {228				delete(r.labels, key)229			} else {230				r.labels[key] = value231			}232			continue233		}234		// Blank line delimits the header. If we find anything else, the file must not have a header.235		if !havePerm {236			if line == "" {237				r.permLabels = r.labels.Copy()238			} else {239				r.permLabels = Labels{}240			}241		}242		if fullName, ok := parseBenchmarkLine(line); ok {243			r.result = r.newResult(r.labels, r.lineNum, fullName, line)244			return true245		}246	}247	if err := r.s.Err(); err != nil {248		r.err = err249		return false250	}251	r.err = io.EOF252	return false253}...

metrics.go

Source:metrics.go

...9	Name  string10	Value string11}12func (m *Metrics) SetGauge(key []string, val float32) {13	m.SetGaugeWithLabels(key, val, nil)14}15func (m *Metrics) SetGaugeWithLabels(key []string, val float32, labels []Label) {16	if m.HostName != "" {17		if m.EnableHostnameLabel {18			labels = append(labels, Label{"host", m.HostName})19		} else if m.EnableHostname {20			key = insert(0, m.HostName, key)21		}22	}23	if m.EnableTypePrefix {24		key = insert(0, "gauge", key)25	}26	if m.ServiceName != "" {27		if m.EnableServiceLabel {28			labels = append(labels, Label{"service", m.ServiceName})29		} else {30			key = insert(0, m.ServiceName, key)31		}32	}33	allowed, labelsFiltered := m.allowMetric(key, labels)34	if !allowed {35		return36	}37	m.sink.SetGaugeWithLabels(key, val, labelsFiltered)38}39func (m *Metrics) EmitKey(key []string, val float32) {40	if m.EnableTypePrefix {41		key = insert(0, "kv", key)42	}43	if m.ServiceName != "" {44		key = insert(0, m.ServiceName, key)45	}46	allowed, _ := m.allowMetric(key, nil)47	if !allowed {48		return49	}50	m.sink.EmitKey(key, val)51}52func (m *Metrics) IncrCounter(key []string, val float32) {53	m.IncrCounterWithLabels(key, val, nil)54}55func (m *Metrics) IncrCounterWithLabels(key []string, val float32, labels []Label) {56	if m.HostName != "" && m.EnableHostnameLabel {57		labels = append(labels, Label{"host", m.HostName})58	}59	if m.EnableTypePrefix {60		key = insert(0, "counter", key)61	}62	if m.ServiceName != "" {63		if m.EnableServiceLabel {64			labels = append(labels, Label{"service", m.ServiceName})65		} else {66			key = insert(0, m.ServiceName, key)67		}68	}69	allowed, labelsFiltered := m.allowMetric(key, labels)70	if !allowed {71		return72	}73	m.sink.IncrCounterWithLabels(key, val, labelsFiltered)74}75func (m *Metrics) AddSample(key []string, val float32) {76	m.AddSampleWithLabels(key, val, nil)77}78func (m *Metrics) AddSampleWithLabels(key []string, val float32, labels []Label) {79	if m.HostName != "" && m.EnableHostnameLabel {80		labels = append(labels, Label{"host", m.HostName})81	}82	if m.EnableTypePrefix {83		key = insert(0, "sample", key)84	}85	if m.ServiceName != "" {86		if m.EnableServiceLabel {87			labels = append(labels, Label{"service", m.ServiceName})88		} else {89			key = insert(0, m.ServiceName, key)90		}91	}92	allowed, labelsFiltered := m.allowMetric(key, labels)93	if !allowed {94		return95	}96	m.sink.AddSampleWithLabels(key, val, labelsFiltered)97}98func (m *Metrics) MeasureSince(key []string, start time.Time) {99	m.MeasureSinceWithLabels(key, start, nil)100}101func (m *Metrics) MeasureSinceWithLabels(key []string, start time.Time, labels []Label) {102	if m.HostName != "" && m.EnableHostnameLabel {103		labels = append(labels, Label{"host", m.HostName})104	}105	if m.EnableTypePrefix {106		key = insert(0, "timer", key)107	}108	if m.ServiceName != "" {109		if m.EnableServiceLabel {110			labels = append(labels, Label{"service", m.ServiceName})111		} else {112			key = insert(0, m.ServiceName, key)113		}114	}115	allowed, labelsFiltered := m.allowMetric(key, labels)116	if !allowed {117		return118	}119	now := time.Now()120	elapsed := now.Sub(start)121	msec := float32(elapsed.Nanoseconds()) / float32(m.TimerGranularity)122	m.sink.AddSampleWithLabels(key, msec, labelsFiltered)123}124// UpdateFilter overwrites the existing filter with the given rules.125func (m *Metrics) UpdateFilter(allow, block []string) {126	m.UpdateFilterAndLabels(allow, block, m.AllowedLabels, m.BlockedLabels)127}128// UpdateFilterAndLabels overwrites the existing filter with the given rules.129func (m *Metrics) UpdateFilterAndLabels(allow, block, allowedLabels, blockedLabels []string) {130	m.filterLock.Lock()131	defer m.filterLock.Unlock()132	m.AllowedPrefixes = allow133	m.BlockedPrefixes = block134	if allowedLabels == nil {135		// Having a white list means we take only elements from it136		m.allowedLabels = nil137	} else {138		m.allowedLabels = make(map[string]bool)139		for _, v := range allowedLabels {140			m.allowedLabels[v] = true141		}142	}143	m.blockedLabels = make(map[string]bool)144	for _, v := range blockedLabels {145		m.blockedLabels[v] = true146	}147	m.AllowedLabels = allowedLabels148	m.BlockedLabels = blockedLabels149	m.filter = iradix.New()150	for _, prefix := range m.AllowedPrefixes {151		m.filter, _, _ = m.filter.Insert([]byte(prefix), true)152	}153	for _, prefix := range m.BlockedPrefixes {154		m.filter, _, _ = m.filter.Insert([]byte(prefix), false)155	}156}157// labelIsAllowed return true if a should be included in metric158// the caller should lock m.filterLock while calling this method159func (m *Metrics) labelIsAllowed(label *Label) bool {160	labelName := (*label).Name161	if m.blockedLabels != nil {162		_, ok := m.blockedLabels[labelName]163		if ok {164			// If present, let's remove this label165			return false166		}167	}168	if m.allowedLabels != nil {169		_, ok := m.allowedLabels[labelName]170		return ok171	}172	// Allow by default173	return true174}175// filterLabels return only allowed labels176// the caller should lock m.filterLock while calling this method177func (m *Metrics) filterLabels(labels []Label) []Label {178	if labels == nil {179		return nil180	}181	toReturn := labels[:0]182	for _, label := range labels {183		if m.labelIsAllowed(&label) {184			toReturn = append(toReturn, label)185		}186	}187	return toReturn188}189// Returns whether the metric should be allowed based on configured prefix filters190// Also return the applicable labels191func (m *Metrics) allowMetric(key []string, labels []Label) (bool, []Label) {192	m.filterLock.RLock()193	defer m.filterLock.RUnlock()194	if m.filter == nil || m.filter.Len() == 0 {195		return m.Config.FilterDefault, m.filterLabels(labels)196	}197	_, allowed, ok := m.filter.Root().LongestPrefix([]byte(strings.Join(key, ".")))198	if !ok {199		return m.Config.FilterDefault, m.filterLabels(labels)200	}201	return allowed.(bool), m.filterLabels(labels)202}203// Periodically collects runtime stats to publish204func (m *Metrics) collectStats() {205	for {206		time.Sleep(m.ProfileInterval)207		m.emitRuntimeStats()208	}209}210// Emits various runtime statsitics211func (m *Metrics) emitRuntimeStats() {212	// Export number of Goroutines213	numRoutines := runtime.NumGoroutine()214	m.SetGauge([]string{"runtime", "num_goroutines"}, float32(numRoutines))215	// Export memory stats...

Labels

Using AI Code Generation

1import (2func main() {3    gauge := promauto.NewGauge(prometheus.GaugeOpts{4    })5    gauge.Set(100)6    gauge.Add(10)7    gauge.Sub(5)8    fmt.Println(gauge.Get())9    fmt.Println(gauge.Labels())10    http.Handle("/metrics", promhttp.Handler())11    http.ListenAndServe(":2112", nil)12}13import (14func main() {15    gauge := promauto.NewGauge(prometheus.GaugeOpts{16    })17    gauge.Set(100)18    gauge.Add(10)19    gauge.Sub(5)20    fmt.Println(gauge.Get())21    fmt.Println(gauge.Labels())22    metricFamily := gauge.Collect()[0]23    metricFamily.Write()24    http.Handle("/metrics", promhttp.Handler())25    http.ListenAndServe(":2112", nil)26}

Labels

Using AI Code Generation

1import (2var (3	counter = promauto.NewCounter(prometheus.CounterOpts{4	})5	histogram = promauto.NewHistogram(prometheus.HistogramOpts{6	})7func main() {8	http.Handle("/metrics", promhttp.Handler())9	go func() {10		for {11			counter.Inc()12			histogram.Observe(5)13		}14	}()15	log.Fatal(http.ListenAndServe(":2112", nil))16}17import (18var (19	counter = promauto.NewCounterVec(prometheus.CounterOpts{20	}, []string{"method"})21	histogram = promauto.NewHistogramVec(prometheus.HistogramOpts{22	}, []string{"method"})23func main() {24	http.Handle("/metrics", promhttp.Handler())25	go func() {26		for {27			counter.WithLabelValues("GET").Inc()28			histogram.WithLabelValues("GET").Observe(5)29		}30	}()31	log.Fatal(http.ListenAndServe(":2112", nil))32}33import (34var (35	counter = promauto.NewCounter(prometheus.CounterOpts{36	})

Labels

Using AI Code Generation

1import (2func main() {3    c := promauto.NewCounter(prometheus.CounterOpts{4    })5    c.Inc()6    c.Add(47)7    h := promauto.NewHistogram(prometheus.HistogramOpts{8        Buckets: prometheus.LinearBuckets(5, 5, 5),9    })10    h.Observe(3)11    h.Observe(8)12    s := promauto.NewSummary(prometheus.SummaryOpts{13    })14    s.Observe(3)15    s.Observe(8)

Labels

Using AI Code Generation

1import (2func main() {3	fmt.Println("type:", reflect.TypeOf(x))4	v := reflect.ValueOf(x)5	fmt.Println("value:", v)6	fmt.Println("type:", v.Type())7	fmt.Println("kind is float64:", v.Kind() == reflect.Float64)8	fmt.Println("value:", v.Float())9	v.SetFloat(7.1)10	fmt.Println(v.Interface())11	fmt.Println(x)12}13Float() method returns the value of the variable in float64 format14SetFloat() method sets the value of the variable15Interface() method returns the value of the variable in interface format16Kind() method returns the type of the variable17Type() method returns the type of the variable

Labels

Using AI Code Generation

1import (2func main() {3	s := op.NewScope()4	c := op.Const(s, "Hello from TensorFlow version " + tensorflow.Version())5	graph, err := s.Finalize()6	if err != nil {7		panic(err)8	}9	session, err := tensorflow.NewSession(graph, nil)10	if err != nil {11		panic(err)12	}13	output, err := session.Run(14		map[tensorflow.Output]*tensorflow.Tensor{15			c.Output(0): {},16		},17		[]tensorflow.Output{18			c.Output(0),19		},20	if err != nil {21		panic(err)22	}23	fmt.Println(output[0].Value().(string))24}25import (26func main() {27	s := op.NewScope()28	c := op.Const(s, "Hello from TensorFlow version " + tensorflow.Version())29	graph, err := s.Finalize()30	if err != nil {31		panic(err)32	}33	session, err := tensorflow.NewSession(graph, nil)34	if err != nil {35		panic(err)36	}37	output, err := session.Run(38		map[tensorflow.Output]*tensorflow.Tensor{39			c.Output(0): {},40		},41		[]tensorflow.Output{42			c.Output(0),43		},44	if err != nil {45		panic(err)46	}47	fmt.Println(output[0].Value().(string))48}49import (

Labels

Using AI Code Generation

1import (2func main() {3	ctx := context.Background()4	cli, err := client.NewEnvClient()5	if err != nil {6		panic(err)7	}8	containers, err := cli.ContainerList(ctx, types.ContainerListOptions{})9	if err != nil {10		panic(err)11	}12	for _, container := range containers {13		fmt.Printf("14		labels, err := cli.ContainerInspect(ctx, container.ID)15		if err != nil {16			panic(err)17		}18		for key, value := range labels.Config.Labels {19			fmt.Printf("%s=%s20		}21	}22}23import (24func main() {25	ctx := context.Background()26	cli, err := client.NewEnvClient()27	if err != nil {28		panic(err)29	}30	containers, err := cli.ContainerList(ctx, types.ContainerListOptions{})31	if err != nil {32		panic(err

Labels

Using AI Code Generation

1import (2func main() {3	g := promauto.NewGauge(prometheus.GaugeOpts{4	})5	c := promauto.NewCounter(prometheus.CounterOpts{6	})7	g.Set(1.0)8	c.Inc()9	val := g.Get()10	fmt.Printf("Gauge Value: %f11	val = c.Get()12	fmt.Printf("Counter Value: %f13	fmt.Printf("Gauge Labels: %v14	fmt.Printf("Counter Labels: %v15}16import (17func main() {18	g := promauto.NewGauge(prometheus.GaugeOpts{19	})20	c := promauto.NewCounter(prometheus.CounterOpts{21	})22	g.Set(1.0)23	c.Inc()24	val := g.Get()25	fmt.Printf("Gauge Value: %f26	val = c.Get()27	fmt.Printf("Counter Value: %f

Labels

Using AI Code Generation

1import (2func main() {3	counter := prometheus.NewCounterVec(4		prometheus.CounterOpts{5		}, []string{"label1", "label2"})6	counter.WithLabelValues("foo", "bar").Inc()7	counter.WithLabelValues("foo", "bar").Inc()8	counter.WithLabelValues("foo", "bar").Inc()9	counter.WithLabelValues("foo", "bar").Inc()10	for _, label := range counter.WithLabelValues("foo", "bar").Labels() {11		fmt.Println(label)12	}13}

Labels

Using AI Code Generation

1import (2func main() {3    words := strings.Fields(s)4    l := labels.NewLabels()5    for _, v := range words {6        l.Add(v)7    }8    fmt.Println(l.Labels())9}10import (11func main() {12    words := strings.Fields(s)13    fmt.Println(len(words))14}15import (16func main() {17    fmt.Println(strings.Len(s))18}19import (20func main() {21    fmt.Println(len(s))22}23import (24func main() {

Labels

Using AI Code Generation

1import (2func main() {3    label := ebnf.NewLabels()4    label.Add("label1", "value1")5    label.Add("label2", "value2")6    label.Add("label3", "value3")7    label.Add("label4", "value4")8    label.Add("label5", "value5")9    label.Add("label6", "value6")10    label.Add("label7", "value7")11    label.Add("label8", "value8")12    label.Add("label9", "value9")13    label.Add("label10", "value10")14    label.Add("label11", "value11")15    label.Add("label12", "value12")16    label.Add("label13", "value13")17    label.Add("label14", "value14")18    label.Add("label15", "value15")19    label.Add("label16", "value16")20    label.Add("label17", "value17")21    label.Add("label18", "value18")22    label.Add("label19", "value19")23    label.Add("label20", "value20")24    label.Add("label21", "value21")25    label.Add("label22", "value22")26    label.Add("label23", "value23")27    label.Add("label24", "value24")28    label.Add("label25", "value25")29    label.Add("label26", "value26")30    label.Add("label27", "

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