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9b6dad18cb
* feat: provide metrics endpoint * config * enable otel metrics by default Co-authored-by: Florian Forster <florian@caos.ch>
79 lines
2.5 KiB
Go
79 lines
2.5 KiB
Go
package otel
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import (
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"context"
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"net/http"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/propagation"
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sdk_trace "go.opentelemetry.io/otel/sdk/trace"
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api_trace "go.opentelemetry.io/otel/trace"
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otel_resource "github.com/zitadel/zitadel/internal/telemetry/otel"
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"github.com/zitadel/zitadel/internal/telemetry/tracing"
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)
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type Tracer struct {
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Exporter api_trace.Tracer
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sampler sdk_trace.Sampler
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}
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func NewTracer(sampler sdk_trace.Sampler, exporter sdk_trace.SpanExporter) (*Tracer, error) {
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resource, err := otel_resource.ResourceWithService()
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if err != nil {
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return nil, err
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}
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spanProcessor := sdk_trace.NewBatchSpanProcessor(exporter)
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tp := sdk_trace.NewTracerProvider(
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sdk_trace.WithSampler(sampler),
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sdk_trace.WithBatcher(exporter),
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sdk_trace.WithSpanProcessor(spanProcessor),
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sdk_trace.WithResource(resource),
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)
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otel.SetTracerProvider(tp)
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tc := propagation.TraceContext{}
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otel.SetTextMapPropagator(tc)
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return &Tracer{Exporter: tp.Tracer(""), sampler: sampler}, nil
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}
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func (t *Tracer) Sampler() sdk_trace.Sampler {
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return t.sampler
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}
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func (t *Tracer) NewServerInterceptorSpan(ctx context.Context, name string) (context.Context, *tracing.Span) {
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return t.newSpanFromName(ctx, name, api_trace.WithSpanKind(api_trace.SpanKindServer))
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}
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func (t *Tracer) NewServerSpan(ctx context.Context, caller string) (context.Context, *tracing.Span) {
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return t.newSpan(ctx, caller, api_trace.WithSpanKind(api_trace.SpanKindServer))
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}
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func (t *Tracer) NewClientInterceptorSpan(ctx context.Context, name string) (context.Context, *tracing.Span) {
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return t.newSpanFromName(ctx, name, api_trace.WithSpanKind(api_trace.SpanKindClient))
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}
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func (t *Tracer) NewClientSpan(ctx context.Context, caller string) (context.Context, *tracing.Span) {
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return t.newSpan(ctx, caller, api_trace.WithSpanKind(api_trace.SpanKindClient))
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}
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func (t *Tracer) NewSpan(ctx context.Context, caller string) (context.Context, *tracing.Span) {
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return t.newSpan(ctx, caller)
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}
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func (t *Tracer) newSpan(ctx context.Context, caller string, options ...api_trace.SpanStartOption) (context.Context, *tracing.Span) {
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return t.newSpanFromName(ctx, caller, options...)
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}
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func (t *Tracer) newSpanFromName(ctx context.Context, name string, options ...api_trace.SpanStartOption) (context.Context, *tracing.Span) {
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ctx, span := t.Exporter.Start(ctx, name, options...)
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return ctx, tracing.CreateSpan(span)
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}
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func (t *Tracer) NewSpanHTTP(r *http.Request, caller string) (*http.Request, *tracing.Span) {
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ctx, span := t.NewSpan(r.Context(), caller)
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r = r.WithContext(ctx)
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return r, span
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}
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