mirror of
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96 lines
2.9 KiB
Go
96 lines
2.9 KiB
Go
package google
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import (
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"context"
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"net/http"
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"os"
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"strings"
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"contrib.go.opencensus.io/exporter/stackdriver"
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"go.opencensus.io/plugin/ocgrpc"
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"go.opencensus.io/plugin/ochttp"
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"go.opencensus.io/stats/view"
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"go.opencensus.io/trace"
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"github.com/caos/zitadel/internal/errors"
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"github.com/caos/zitadel/internal/tracing"
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)
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type Tracer struct {
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Exporter *stackdriver.Exporter
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projectID string
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metricPrefix string
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sampler trace.Sampler
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}
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func (t *Tracer) Start() (err error) {
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t.Exporter, err = stackdriver.NewExporter(stackdriver.Options{
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ProjectID: t.projectID,
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MetricPrefix: t.metricPrefix,
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})
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if err != nil {
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return errors.ThrowInternal(err, "GOOGL-4dCnX", "unable to start exporter")
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}
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views := append(ocgrpc.DefaultServerViews, ocgrpc.DefaultClientViews...)
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views = append(views, ochttp.DefaultClientViews...)
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views = append(views, ochttp.DefaultServerViews...)
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if err = view.Register(views...); err != nil {
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return errors.ThrowInternal(err, "GOOGL-Q6L6w", "unable to register view")
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}
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trace.RegisterExporter(t.Exporter)
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trace.ApplyConfig(trace.Config{DefaultSampler: t.sampler})
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return nil
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}
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func (t *Tracer) Sampler() 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, trace.WithSpanKind(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, trace.WithSpanKind(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, trace.WithSpanKind(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, trace.WithSpanKind(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 ...trace.StartOption) (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 ...trace.StartOption) (context.Context, *tracing.Span) {
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ctx, span := trace.StartSpan(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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func envIsSet() bool {
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gAuthCred := os.Getenv("GOOGLE_APPLICATION_CREDENTIALS")
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return strings.Contains(gAuthCred, ".json")
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}
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func (t *Tracer) SetErrStatus(span *trace.Span, code int32, err error, obj ...string) {
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span.SetStatus(trace.Status{Code: code, Message: err.Error() + strings.Join(obj, ", ")})
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}
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