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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| package telemetry | ||
|
|
||
| import ( | ||
| "context" | ||
| "os" | ||
| "strings" | ||
|
|
||
| "go.opentelemetry.io/otel" | ||
| "go.opentelemetry.io/otel/attribute" | ||
| "go.opentelemetry.io/otel/exporters/otlp/otlptrace" | ||
| "go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc" | ||
| "go.opentelemetry.io/otel/propagation" | ||
| "google.golang.org/grpc/credentials" | ||
|
|
||
| "github.com/flanksource/commons/collections" | ||
| "github.com/flanksource/commons/logger" | ||
| "go.opentelemetry.io/otel/sdk/resource" | ||
| sdktrace "go.opentelemetry.io/otel/sdk/trace" | ||
| ) | ||
|
|
||
| func InitTracer(serviceName, collectorURL string, insecure bool) func(context.Context) error { | ||
| var secureOption otlptracegrpc.Option | ||
| if !insecure { | ||
| secureOption = otlptracegrpc.WithTLSCredentials(credentials.NewClientTLSFromCert(nil, "")) | ||
| } else { | ||
| secureOption = otlptracegrpc.WithInsecure() | ||
| } | ||
|
|
||
| exporter, err := otlptrace.New( | ||
| context.Background(), | ||
| otlptracegrpc.NewClient( | ||
| secureOption, | ||
| otlptracegrpc.WithEndpoint(collectorURL), | ||
| ), | ||
| ) | ||
|
|
||
| if err != nil { | ||
| logger.Errorf("failed to create opentelemetry exporter: %v", err) | ||
| return func(_ context.Context) error { return nil } | ||
| } | ||
|
|
||
| attributes := []attribute.KeyValue{attribute.String("service.name", serviceName)} | ||
| if val, ok := os.LookupEnv("OTEL_LABELS"); ok { | ||
| kv := collections.KeyValueSliceToMap(strings.Split(val, ",")) | ||
| for k, v := range kv { | ||
| attributes = append(attributes, attribute.String(k, v)) | ||
| } | ||
| } | ||
|
|
||
| resources, err := resource.New(context.Background(), resource.WithAttributes(attributes...)) | ||
| if err != nil { | ||
| logger.Errorf("could not set opentelemetry resources: %v", err) | ||
| return func(_ context.Context) error { return nil } | ||
| } | ||
|
|
||
| otel.SetTracerProvider( | ||
| sdktrace.NewTracerProvider( | ||
| sdktrace.WithSampler(sdktrace.AlwaysSample()), | ||
| sdktrace.WithBatcher(exporter), | ||
| sdktrace.WithResource(resources), | ||
| ), | ||
| ) | ||
|
|
||
| // Register the TraceContext propagator globally. | ||
| otel.SetTextMapPropagator(propagation.TraceContext{}) | ||
|
|
||
| return exporter.Shutdown | ||
| } |