74 lines
1.7 KiB
Go
74 lines
1.7 KiB
Go
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package fiber_tracing
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import (
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"context"
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"log"
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"github.com/gofiber/fiber/v2"
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fiberOpentelemetry "github.com/psmarcin/fiber-opentelemetry/pkg/fiber-otel"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/sdk/resource"
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trc "go.opentelemetry.io/otel/sdk/trace"
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semconv "go.opentelemetry.io/otel/semconv/v1.25.0"
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trace "go.opentelemetry.io/otel/trace"
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)
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var (
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TracingError error = nil
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TP trc.TracerProvider
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)
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type Config struct {
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AppName string
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Version string
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ServiceProvider string
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Exporter trc.SpanExporter
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}
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func newResource(config Config) *resource.Resource {
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r := resource.NewWithAttributes(
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semconv.SchemaURL,
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semconv.ServiceNameKey.String(config.AppName),
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semconv.ServiceVersionKey.String(config.Version),
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attribute.String("service.provider", config.ServiceProvider),
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)
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return r
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}
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func NewMiddleware(config Config) func(*fiber.Ctx) error {
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var tracerProviders []trc.TracerProviderOption
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tracerProviders = append(tracerProviders, trc.WithBatcher(config.Exporter))
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tracerProviders = append(tracerProviders, trc.WithResource(newResource(config)))
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TP = *trc.NewTracerProvider(tracerProviders...)
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otel.SetTracerProvider(&TP)
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otel.SetErrorHandler(otel.ErrorHandlerFunc(func(err error) {
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if err != TracingError {
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TracingError = err
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log.Println(err)
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}
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}))
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tracer := TP.Tracer("_maal-fiber-otel_")
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return fiberOpentelemetry.New(
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fiberOpentelemetry.Config{
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Tracer: tracer,
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SpanName: "{{ .Method }} {{ .Path }}",
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TracerStartAttributes: []trace.SpanStartOption{
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trace.WithSpanKind(trace.SpanKindServer),
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trace.WithNewRoot(),
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},
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},
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)
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}
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func ShutdownTracer() {
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if err := TP.Shutdown(context.Background()); err != nil {
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log.Fatal(err)
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}
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}
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