feat: add option for exporting traces to a provided Honeycomb team (#4816)

coderd/tracing/exporter.go

@@ -13,6 +13,7 @@ import (
 	sdktrace "go.opentelemetry.io/otel/sdk/trace"
 	semconv "go.opentelemetry.io/otel/semconv/v1.11.0"
 	"golang.org/x/xerrors"
+	"google.golang.org/grpc/credentials"
 )
 
 // TracerOpts specifies which telemetry exporters should be configured.
@@ -23,6 +24,8 @@ type TracerOpts struct {
 	// Coder exports traces to Coder's public tracing ingest service and is used
 	// to improve the product. It is disabled when opting out of telemetry.
 	Coder bool
+	// Exports traces to Honeycomb.io with the provided API key.
+	Honeycomb string
 }
 
 // TracerProvider creates a grpc otlp exporter and configures a trace provider.
@@ -57,6 +60,14 @@ func TracerProvider(ctx context.Context, service string, opts TracerOpts) (*sdkt
 		closers = append(closers, exporter.Shutdown)
 		tracerOpts = append(tracerOpts, sdktrace.WithBatcher(exporter))
 	}
+	if opts.Honeycomb != "" {
+		exporter, err := HoneycombExporter(ctx, opts.Honeycomb)
+		if err != nil {
+			return nil, nil, xerrors.Errorf("honeycomb exporter: %w", err)
+		}
+		closers = append(closers, exporter.Shutdown)
+		tracerOpts = append(tracerOpts, sdktrace.WithBatcher(exporter))
+	}
 
 	tracerProvider := sdktrace.NewTracerProvider(tracerOpts...)
 	otel.SetTracerProvider(tracerProvider)
@@ -101,3 +112,20 @@ func CoderExporter(ctx context.Context) (*otlptrace.Exporter, error) {
 
 	return exporter, nil
 }
+
+func HoneycombExporter(ctx context.Context, apiKey string) (*otlptrace.Exporter, error) {
+	opts := []otlptracegrpc.Option{
+		otlptracegrpc.WithEndpoint("api.honeycomb.io:443"),
+		otlptracegrpc.WithHeaders(map[string]string{
+			"x-honeycomb-team": apiKey,
+		}),
+		otlptracegrpc.WithTLSCredentials(credentials.NewClientTLSFromCert(nil, "")),
+	}
+
+	exporter, err := otlptrace.New(ctx, otlptracegrpc.NewClient(opts...))
+	if err != nil {
+		return nil, xerrors.Errorf("create otlp exporter: %w", err)
+	}
+
+	return exporter, nil
+}