mirror of
https://github.com/zitadel/zitadel.git
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109 lines
3.0 KiB
Go
109 lines
3.0 KiB
Go
package otel
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import (
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"context"
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"net/http"
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"sync"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/exporters/prometheus"
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"go.opentelemetry.io/otel/metric"
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export "go.opentelemetry.io/otel/sdk/export/metric"
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controller "go.opentelemetry.io/otel/sdk/metric/controller/basic"
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processor "go.opentelemetry.io/otel/sdk/metric/processor/basic"
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selector "go.opentelemetry.io/otel/sdk/metric/selector/simple"
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caos_errs "github.com/caos/zitadel/internal/errors"
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"github.com/caos/zitadel/internal/telemetry/metrics"
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)
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type Metrics struct {
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Exporter *prometheus.Exporter
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Meter metric.Meter
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Counters sync.Map
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UpDownSumObserver sync.Map
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ValueObservers sync.Map
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}
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func NewMetrics(meterName string) (metrics.Metrics, error) {
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exporter, err := prometheus.New(
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prometheus.Config{},
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controller.New(
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processor.NewFactory(
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selector.NewWithHistogramDistribution(),
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export.CumulativeExportKindSelector(),
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processor.WithMemory(true),
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),
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),
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)
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if err != nil {
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return &Metrics{}, err
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}
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return &Metrics{
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Exporter: exporter,
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Meter: exporter.MeterProvider().Meter(meterName),
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}, nil
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}
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func (m *Metrics) GetExporter() http.Handler {
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return m.Exporter
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}
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func (m *Metrics) GetMetricsProvider() metric.MeterProvider {
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return m.Exporter.MeterProvider()
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}
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func (m *Metrics) RegisterCounter(name, description string) error {
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if _, exists := m.Counters.Load(name); exists {
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return nil
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}
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counter := metric.Must(m.Meter).NewInt64Counter(name, metric.WithDescription(description))
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m.Counters.Store(name, counter)
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return nil
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}
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func (m *Metrics) AddCount(ctx context.Context, name string, value int64, labels map[string]attribute.Value) error {
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counter, exists := m.Counters.Load(name)
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if !exists {
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return caos_errs.ThrowNotFound(nil, "METER-4u8fs", "Errors.Metrics.Counter.NotFound")
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}
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counter.(metric.Int64Counter).Add(ctx, value, MapToKeyValue(labels)...)
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return nil
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}
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func (m *Metrics) RegisterUpDownSumObserver(name, description string, callbackFunc metric.Int64ObserverFunc) error {
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if _, exists := m.UpDownSumObserver.Load(name); exists {
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return nil
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}
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sumObserver := metric.Must(m.Meter).NewInt64UpDownCounterObserver(
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name, callbackFunc, metric.WithDescription(description))
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m.UpDownSumObserver.Store(name, sumObserver)
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return nil
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}
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func (m *Metrics) RegisterValueObserver(name, description string, callbackFunc metric.Int64ObserverFunc) error {
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if _, exists := m.UpDownSumObserver.Load(name); exists {
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return nil
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}
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sumObserver := metric.Must(m.Meter).NewInt64GaugeObserver(
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name, callbackFunc, metric.WithDescription(description))
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m.UpDownSumObserver.Store(name, sumObserver)
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return nil
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}
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func MapToKeyValue(labels map[string]attribute.Value) []attribute.KeyValue {
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if labels == nil {
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return nil
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}
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keyValues := make([]attribute.KeyValue, 0, len(labels))
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for key, value := range labels {
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keyValues = append(keyValues, attribute.KeyValue{
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Key: attribute.Key(key),
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Value: value,
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})
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}
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return keyValues
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}
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