✨🔧 Setup Open Telemetry Metrics and Traces (#237)

We use go.opentelemetry.io/contrib/exporters/autoexport for standard loading exporter configurations via env variables.

Author: gernest

go.mod

@@ -16,8 +16,12 @@ require (
 	github.com/joho/godotenv v1.5.1
 	github.com/r3labs/sse/v2 v2.10.0
 	github.com/spf13/cobra v1.8.0
-	github.com/stretchr/testify v1.8.4
+	github.com/stretchr/testify v1.9.0
 	github.com/swaggo/swag v1.16.3
+	go.opentelemetry.io/contrib/exporters/autoexport v0.51.0
+	go.opentelemetry.io/otel v1.26.0
+	go.opentelemetry.io/otel/sdk v1.26.0
+	go.opentelemetry.io/otel/sdk/metric v1.26.0
 	go.uber.org/goleak v1.3.0
 	go.uber.org/multierr v1.11.0
 	go.uber.org/zap v1.26.0
@@ -38,15 +42,21 @@ require (
 	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.21.7 // indirect
 	github.com/aws/aws-sdk-go-v2/service/sts v1.26.7 // indirect
 	github.com/aws/smithy-go v1.19.0 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/fasthttp/websocket v1.5.7 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.2 // indirect
+	github.com/go-logr/logr v1.4.1 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-openapi/jsonpointer v0.20.2 // indirect
 	github.com/go-openapi/jsonreference v0.20.4 // indirect
 	github.com/go-openapi/spec v0.20.13 // indirect
 	github.com/go-openapi/swag v0.22.7 // indirect
 	github.com/go-playground/locales v0.14.1 // indirect
 	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.19.1 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/klauspost/compress v1.17.6 // indirect
@@ -56,17 +66,36 @@ require (
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mattn/go-runewidth v0.0.15 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/prometheus/client_golang v1.19.0 // indirect
+	github.com/prometheus/client_model v0.6.1 // indirect
+	github.com/prometheus/common v0.48.0 // indirect
+	github.com/prometheus/procfs v0.12.0 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/savsgio/gotils v0.0.0-20230208104028-c358bd845dee // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/swaggo/files/v2 v2.0.0 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasthttp v1.52.0 // indirect
 	github.com/valyala/tcplisten v1.0.0 // indirect
-	golang.org/x/crypto v0.21.0 // indirect
-	golang.org/x/net v0.21.0 // indirect
-	golang.org/x/sys v0.18.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.26.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.26.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.26.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.26.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.26.0 // indirect
+	go.opentelemetry.io/otel/exporters/prometheus v0.48.0 // indirect
+	go.opentelemetry.io/otel/exporters/stdout/stdoutmetric v1.26.0 // indirect
+	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.26.0 // indirect
+	go.opentelemetry.io/otel/metric v1.26.0 // indirect
+	go.opentelemetry.io/otel/trace v1.26.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.2.0 // indirect
+	golang.org/x/crypto v0.22.0 // indirect
+	golang.org/x/net v0.24.0 // indirect
+	golang.org/x/sys v0.19.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
 	golang.org/x/tools v0.16.1 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20240227224415-6ceb2ff114de // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240401170217-c3f982113cda // indirect
+	google.golang.org/grpc v1.63.2 // indirect
+	google.golang.org/protobuf v1.33.0 // indirect
 	gopkg.in/cenkalti/backoff.v1 v1.1.0 // indirect
 )

go.sum

@@ -1,10 +1,25 @@
 package telemetry
 
-import "go.uber.org/zap"
+import (
+	"context"
+
+	"go.opentelemetry.io/contrib/exporters/autoexport"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/propagation"
+	sdkmetric "go.opentelemetry.io/otel/sdk/metric"
+	"go.opentelemetry.io/otel/sdk/resource"
+	sdktrace "go.opentelemetry.io/otel/sdk/trace"
+	semconv "go.opentelemetry.io/otel/semconv/v1.24.0"
+	"go.uber.org/zap"
+)
+
+var Resource = resource.NewWithAttributes(
+	semconv.SchemaURL,
+	semconv.ServiceName("glide"),
+)
 
 type Config struct {
 	LogConfig *LogConfig `yaml:"logging" validate:"required"`
-	// TODO: add OTEL config
 }
 
 type Telemetry struct {
@@ -29,6 +44,33 @@ func NewTelemetry(cfg *Config) (*Telemetry, error) {
 		return nil, err
 	}
 
+	spanExporter, err := autoexport.NewSpanExporter(context.Background())
+	if err != nil {
+		return nil, err
+	}
+
+	tp := sdktrace.NewTracerProvider(
+		sdktrace.WithResource(Resource),
+		sdktrace.WithSampler(sdktrace.AlwaysSample()),
+		sdktrace.WithBatcher(spanExporter),
+	)
+	otel.SetTracerProvider(tp)
+	otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(propagation.TraceContext{}, propagation.Baggage{}))
+
+	metricsReader, err := autoexport.NewMetricReader(context.Background())
+	if err != nil {
+		return nil, err
+	}
+
+	provider := sdkmetric.NewMeterProvider(
+		sdkmetric.WithReader(
+			metricsReader,
+		),
+		sdkmetric.WithResource(Resource),
+	)
+
+	otel.SetMeterProvider(provider)
+
 	return &Telemetry{
 		Config: cfg,
 		Logger: logger,