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func RecordCacheLookup ¶ added in v0.17.0

func RecordCacheLookup(ctx context.Context, result, typ string)

func RecordUpstreamFetch ¶ added in v0.17.0

func RecordUpstreamFetch(ctx context.Context, result string)

func RecordUpstreamFetchDuration ¶ added in v0.17.0

func RecordUpstreamFetchDuration(ctx context.Context, result string, duration time.Duration)

func RegisterExporter ¶

func RegisterExporter(traceExporter, url, service, env string, samplingFraction float64) (func(), error)

RegisterExporter configures the OpenTelemetry TracerProvider used to export traces.

Athens exports traces via OTLP. The traceExporter argument acts as a toggle: "otlp" enables export, an empty value disables it. The url argument, when set, overrides the OTLP endpoint; otherwise the standard OTEL_EXPORTER_OTLP_* environment variables are honored. samplingFraction is the fraction of root traces sampled outside of development (0 samples nothing, 1 samples everything). RegisterExporter returns a cleanup function that flushes and shuts down the provider; the caller is responsible for calling it at shutdown.

func RegisterStatsExporter ¶ added in v0.3.0

func RegisterStatsExporter(r *mux.Router, statsExporter, service string) (func(), error)

RegisterStatsExporter configures the OpenTelemetry MeterProvider used to collect stats. Currently it supports: prometheus. It returns a cleanup function that shuts down the provider; the caller is responsible for calling it at shutdown.

func StartSpan ¶

func StartSpan(ctx context.Context, op string) (context.Context, oteltrace.Span)

StartSpan takes in a Context and opName and starts a span. It returns the new context carrying the span and the span itself.