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K6
metrics
parseThresholdExpression

How to use parseThresholdExpression method of metrics Package

Best K6 code snippet using metrics.parseThresholdExpression

thresholds.go

Source:thresholds.go

...79		passes = lhs == t.parsed.Value80	case "!=":81		passes = lhs != t.parsed.Value82	default:83		// The parseThresholdExpression function should ensure that no invalid84		// operator gets through, but let's protect our future selves anyhow.85		return false, fmt.Errorf("unable to apply threshold %s over metrics; "+86			"reason: %s is an invalid operator",87			t.Source,88			t.parsed.Operator,89		)90	}91	// Perform the actual threshold verification92	return passes, nil93}94func (t *Threshold) run(sinks map[string]float64) (bool, error) {95	passes, err := t.runNoTaint(sinks)96	t.LastFailed = !passes97	return passes, err98}99type thresholdConfig struct {100	Threshold        string             `json:"threshold"`101	AbortOnFail      bool               `json:"abortOnFail"`102	AbortGracePeriod types.NullDuration `json:"delayAbortEval"`103}104// used internally for JSON marshalling105type rawThresholdConfig thresholdConfig106func (tc *thresholdConfig) UnmarshalJSON(data []byte) error {107	// shortcircuit unmarshalling for simple string format108	if err := json.Unmarshal(data, &tc.Threshold); err == nil {109		return nil110	}111	rawConfig := (*rawThresholdConfig)(tc)112	return json.Unmarshal(data, rawConfig)113}114func (tc thresholdConfig) MarshalJSON() ([]byte, error) {115	var data interface{} = tc.Threshold116	if tc.AbortOnFail {117		data = rawThresholdConfig(tc)118	}119	return MarshalJSONWithoutHTMLEscape(data)120}121// Thresholds is the combination of all Thresholds for a given metric122type Thresholds struct {123	Thresholds []*Threshold124	Abort      bool125	sinked     map[string]float64126}127// NewThresholds returns Thresholds objects representing the provided source strings128func NewThresholds(sources []string) Thresholds {129	tcs := make([]thresholdConfig, len(sources))130	for i, source := range sources {131		tcs[i].Threshold = source132	}133	return newThresholdsWithConfig(tcs)134}135func newThresholdsWithConfig(configs []thresholdConfig) Thresholds {136	thresholds := make([]*Threshold, len(configs))137	sinked := make(map[string]float64)138	for i, config := range configs {139		t := newThreshold(config.Threshold, config.AbortOnFail, config.AbortGracePeriod)140		thresholds[i] = t141	}142	return Thresholds{thresholds, false, sinked}143}144func (ts *Thresholds) runAll(timeSpentInTest time.Duration) (bool, error) {145	succeeded := true146	for i, threshold := range ts.Thresholds {147		b, err := threshold.run(ts.sinked)148		if err != nil {149			return false, fmt.Errorf("threshold %d run error: %w", i, err)150		}151		if !b {152			succeeded = false153			if ts.Abort || !threshold.AbortOnFail {154				continue155			}156			ts.Abort = !threshold.AbortGracePeriod.Valid ||157				threshold.AbortGracePeriod.Duration < types.Duration(timeSpentInTest)158		}159	}160	return succeeded, nil161}162// Run processes all the thresholds with the provided Sink at the provided time and returns if any163// of them fails164func (ts *Thresholds) Run(sink Sink, duration time.Duration) (bool, error) {165	// Initialize the sinks store166	ts.sinked = make(map[string]float64)167	// FIXME: Remove this comment as soon as the metrics.Sink does not expose Format anymore.168	//169	// As of December 2021, this block reproduces the behavior of the170	// metrics.Sink.Format behavior. As we intend to try to get away from it,171	// we instead implement the behavior directly here.172	//173	// For more details, see https://github.com/grafana/k6/issues/2320174	switch sinkImpl := sink.(type) {175	case *CounterSink:176		ts.sinked["count"] = sinkImpl.Value177		ts.sinked["rate"] = sinkImpl.Value / (float64(duration) / float64(time.Second))178	case *GaugeSink:179		ts.sinked["value"] = sinkImpl.Value180	case *TrendSink:181		ts.sinked["min"] = sinkImpl.Min182		ts.sinked["max"] = sinkImpl.Max183		ts.sinked["avg"] = sinkImpl.Avg184		ts.sinked["med"] = sinkImpl.Med185		// Parse the percentile thresholds and insert them in186		// the sinks mapping.187		for _, threshold := range ts.Thresholds {188			if threshold.parsed.AggregationMethod != tokenPercentile {189				continue190			}191			key := fmt.Sprintf("p(%g)", threshold.parsed.AggregationValue.Float64)192			ts.sinked[key] = sinkImpl.P(threshold.parsed.AggregationValue.Float64 / 100)193		}194	case *RateSink:195		ts.sinked["rate"] = float64(sinkImpl.Trues) / float64(sinkImpl.Total)196	case DummySink:197		for k, v := range sinkImpl {198			ts.sinked[k] = v199		}200	default:201		return false, fmt.Errorf("unable to run Thresholds; reason: unknown sink type")202	}203	return ts.runAll(duration)204}205// Parse parses the Thresholds and fills each Threshold.parsed field with the result.206// It effectively asserts they are syntaxically correct.207func (ts *Thresholds) Parse() error {208	for _, t := range ts.Thresholds {209		parsed, err := parseThresholdExpression(t.Source)210		if err != nil {211			return err212		}213		t.parsed = parsed214	}215	return nil216}217// ErrInvalidThreshold indicates a threshold is not valid218var ErrInvalidThreshold = errors.New("invalid threshold")219// Validate ensures a threshold definition is consistent with the metric it applies to.220// Given a metric registry and a metric name to apply the expressions too, Validate will221// assert that each threshold expression uses an aggregation method that's supported by the222// provided metric. It returns an error otherwise.223// Note that this function expects the passed in thresholds to have been parsed already, and224// have their Parsed (ThresholdExpression) field already filled.225func (ts *Thresholds) Validate(metricName string, r *Registry) error {226	parsedMetricName, _, err := ParseMetricName(metricName)227	if err != nil {228		err := fmt.Errorf("unable to validate threshold expressions: %w", ErrMetricNameParsing)229		return errext.WithExitCodeIfNone(err, exitcodes.InvalidConfig)230	}231	// Obtain the metric the thresholds apply to from the registry.232	// if the metric doesn't exist, then we return an error indicating233	// the InvalidConfig exitcode should be used.234	metric := r.Get(parsedMetricName)235	if metric == nil {236		err := fmt.Errorf("%w defined on %s; reason: no metric name %q found", ErrInvalidThreshold, metricName, metricName)237		return errext.WithExitCodeIfNone(err, exitcodes.InvalidConfig)238	}239	for _, threshold := range ts.Thresholds {240		// Return a digestable error if we attempt to validate a threshold241		// that hasn't been parsed yet.242		if threshold.parsed == nil {243			thresholdExpression, err := parseThresholdExpression(threshold.Source)244			if err != nil {245				return fmt.Errorf("unable to validate threshold %q on metric %s; reason: "+246					"parsing threshold failed %w", threshold.Source, metricName, err)247			}248			threshold.parsed = thresholdExpression249		}250		// If the threshold's expression aggregation method is not251		// supported for the metric we validate against, then we return252		// an error indicating the InvalidConfig exitcode should be used.253		if !metric.Type.supportsAggregationMethod(threshold.parsed.AggregationMethod) {254			err := fmt.Errorf(255				"%w %q applied on metric %s; reason: "+256					"unsupported aggregation method %s on metric of type %s. "+257					"supported aggregation methods for this metric are: %s",...

thresholds_parser_test.go

Source:thresholds_parser_test.go

...59	for _, testCase := range tests {60		testCase := testCase61		t.Run(testCase.name, func(t *testing.T) {62			t.Parallel()63			gotExpression, gotErr := parseThresholdExpression(testCase.input)64			assert.Equal(t,65				testCase.wantErr,66				gotErr != nil,67				"parseThresholdExpression() error = %v, wantErr %v", gotErr, testCase.wantErr,68			)69			assert.Equal(t,70				testCase.wantExpression,71				gotExpression,72				"parseThresholdExpression() gotExpression = %v, want %v", gotExpression, testCase.wantExpression,73			)74		})75	}76}77func BenchmarkParseThresholdExpression(b *testing.B) {78	for i := 0; i < b.N; i++ {79		parseThresholdExpression("count>20") // nolint80	}81}82func TestParseThresholdAggregationMethod(t *testing.T) {83	t.Parallel()84	tests := []struct {85		name            string86		input           string87		wantMethod      string88		wantMethodValue null.Float89		wantErr         bool90	}{91		{92			name:            "count method is parsed",93			input:           "count",...

parseThresholdExpression

Using AI Code Generation

1import (2func main() {3    thresholdExpression := "avg(last_5m):avg:system.net.bytes_rcvd{host:host0} > 100"4    threshold, err := metrics.ParseThresholdExpression(thresholdExpression)5    if err != nil {6        fmt.Println(err)7    }8    fmt.Println(threshold)9}10{avg 5m avg system.net.bytes_rcvd map[host:host0] > 100}11import (12func main() {13    metricExpression := "avg:system.net.bytes_rcvd{host:host0}.as_count()"14    metric, err := metrics.ParseMetricExpression(metricExpression)15    if err != nil {16        fmt.Println(err)17    }18    fmt.Println(metric)19}20{avg system.net.bytes_rcvd map[host:host0] as_count map[]}21import (22func main() {23    series := "system.net.bytes_rcvd{host:host0}"24    metric, err := metrics.ParseSeries(series)25    if err != nil {26        fmt.Println(err)27    }28    fmt.Println(metric)29}30{system.net.bytes_rcvd map[host:host0]}31import (32func main() {33    series := "system.net.bytes_rcvd{host:host0}"34    metric, err := metrics.ParseSeriesSignature(series)35    if err != nil {36        fmt.Println(err)37    }38    fmt.Println(metric)39}40{system.net.bytes_rcvd map[host:host0]

parseThresholdExpression

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello, playground")4    a := metrics.NewMetrics().ParseThresholdExpression("1h")5    fmt.Println(a)6}7import (8func main() {9    fmt.Println("Hello, playground")10    a := metrics.NewMetrics().ParseThresholdExpression("1h")11    fmt.Println(a)12}13import (14func main() {15    fmt.Println("Hello, playground")16    a := metrics.NewMetrics().ParseThresholdExpression("1h")17    fmt.Println(a)18}19import (20func main() {21    fmt.Println("Hello, playground")22    a := metrics.NewMetrics().ParseThresholdExpression("1h")23    fmt.Println(a)24}25import (26func main() {27    fmt.Println("Hello, playground")28    a := metrics.NewMetrics().ParseThresholdExpression("1h")29    fmt.Println(a)30}31import (32func main() {33    fmt.Println("Hello, playground")

parseThresholdExpression

Using AI Code Generation

1import (2func main() {3    metrics, err := pdp.NewMetrics("metrics.json")4    if err != nil {5        fmt.Println("Failed to create metrics object", err)6    }7    expression, err := metrics.ParseThresholdExpression("cpu > 70")8    if err != nil {9        fmt.Println("Failed to parse threshold expression", err)10    }11    fmt.Println("Parsed threshold expression", expression)12}13import (14func main() {15    metrics, err := pdp.NewMetrics("metrics.json")16    if err != nil {17        fmt.Println("Failed to create metrics object", err)18    }19    expression, err := metrics.ParseThresholdExpression("cpu > 70")20    if err != nil {21        fmt.Println("Failed to parse threshold expression", err)22    }23    fmt.Println("Parsed threshold expression", expression)24}25{26    "metrics": {27        "cpu": {28        },29        "mem": {30        }31    }32}33import (34func main() {35    metrics, err := pdp.NewMetrics("metrics.json

parseThresholdExpression

Using AI Code Generation

1import (2func main() {3	metrics, err := cpu.Times(false)4	if err != nil {5		fmt.Println(err)6	}7	ok, err := metrics.ParseThresholdExpression(thresholdExpression)8	if err != nil {9		fmt.Println(err)10	}11	fmt.Println(ok)12}13import (14func main() {15	metrics, err := cpu.Times(false)16	if err != nil {17		fmt.Println(err)18	}19	ok, err := metrics.ParseThresholdExpression(thresholdExpression)20	if err != nil {21		fmt.Println(err)22	}23	fmt.Println(ok)24}25import (26func main() {27	metrics, err := cpu.Times(false)28	if err != nil {29		fmt.Println(err)30	}31	ok, err := metrics.ParseThresholdExpression(thresholdExpression)32	if err != nil {33		fmt.Println(err)34	}35	fmt.Println(ok)36}37import (38func main() {39	metrics, err := cpu.Times(false)40	if err != nil {41		fmt.Println(err)42	}43	ok, err := metrics.ParseThresholdExpression(thresholdExpression)44	if err != nil {45		fmt.Println(err)46	}47	fmt.Println(ok)48}

parseThresholdExpression

Using AI Code Generation

1import (2func main() {3	expr1, err := metrics.ParseThresholdExpression("metric.type=\"compute.googleapis.com/instance/cpu/usage_time\" AND resource.type=\"gce_instance\" AND resource.label.zone=\"us-central1-a\" AND resource.label.instance_name=\"kubernetes-master\" AND metric.label.instance_name=\"kubernetes-master\" AND metric.label.zone=\"us-central1-a\" AND resource.label.project_id=\"kubernetes-jenkins-pull\" AND resource.label.cluster_name=\"jenkins-pull\" AND metric.label.project_id=\"kubernetes-jenkins-pull\" AND metric.label.cluster_name=\"jenkins-pull\" AND metric.label.instance_id=\"0\" AND metric.label.cpu=\"1\" AND metric.label.pod_name=\"monitoring-influxdb-grafana-v1-0d4f6\" AND metric.label.namespace_id=\"default\" AND metric.label.container_name=\"monitoring-influxdb-grafana\" AND metric.label.pod_id=\"f5e5a5a5-9d7f-11e5-bb7f-42010af0c7a5\" AND metric.label.namespace_name=\"default\"")4	if err != nil {5		fmt.Println("Error in parsing")6	}7	fmt.Println("Expression 1:", expr1)8	expr2, err := metrics.ParseThresholdExpression("metric.type=\"compute.googleapis.com/instance/cpu/usage_time\" AND resource.type=\"gce_instance\" AND resource.label.zone=\"us-central1-a\" AND resource.label.instance_name=\"kubernetes-master\" AND metric.label.instance_name=\"kubernetes-master\" AND metric.label.zone=\"us-central1-a\" AND resource.label.project_id=\"kubernetes-jenkins-pull\" AND resource.label.cluster_name=\"jenkins-pull\" AND metric.label.project_id=\"kubernetes-jenkins-pull\" AND metric.label.cluster_name=\"jenkins-pull\" AND metric.label.instance_id=\"0\" AND metric.label.cpu=\"1\" AND metric.label.pod_name=\"monitoring-influxdb-grafana-v1-0d4f6\" AND metric.label.namespace_id=\"default\" AND metric.label.container_name=\"monitoring-influxdb-grafana\" AND metric.label.pod_id=\"f5e5a5a5-9d7f-11e5-bb7f-42010af0c

parseThresholdExpression

Using AI Code Generation

1import (2func main() {3	fmt.Println(metrics.parseThresholdExpression(threshold))4}5import (6type metrics struct {7}8func (m metrics) parseThresholdExpression(threshold string) []int {9	for _, thresholdValue := range strings.Split(threshold, ",") {10		threshold, _ := strconv.Atoi(thresholdValue)11		thresholdList = append(thresholdList, threshold)12	}13}14import "fmt"15type Person struct {16}17func (p Person) String() string {18    return fmt.Sprintf("%v (%v years)", p.name, p.age)19}20func main() {21    a := Person{"Arthur Dent", 42}22    z := Person{"Zaphod Beeblebrox", 9001}23    fmt.Println(a, z)24}25import "fmt"26type Person struct {27}28func (p *Person) String() string {29    return fmt.Sprintf("%v (%v years)", p.name, p.age)30}31func main() {32    a := Person{"Arthur Dent", 42}33    z := Person{"Zaphod Beeblebrox", 9001}34    fmt.Println(a, z)35}

parseThresholdExpression

Using AI Code Generation

1import (2func main() {3    var condition, err = metric.ParseThresholdExpression(threshold)4    if err != nil {5        fmt.Println(err)6    } else {7        fmt.Println(condition)8    }9}10{container.googleapis.com/container/cpu/usage_time map[container_name:backend instance_name:instance-1 namespace_id:frontend pod_name:frontend project_id:project-id zone:us-central1-b] gt 0.5 avg 60s}

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