Nik Afiq
657b6aeb22
- Add bootstrap package to initialize application components including logger, tracer, and HTTP server. - Create config package to load runtime settings from environment variables. - Implement observability features including logging, metrics, and tracing. - Add health check and hello use cases with corresponding HTTP handlers. - Introduce middleware for request ID, access logging, metrics, and recovery. - Set up HTTP router with defined routes for health and hello endpoints. - Include tests for health and hello endpoints to ensure proper functionality. - Add OpenTelemetry collector configuration for trace exporting.
60 lines
1.6 KiB
Go
60 lines
1.6 KiB
Go
package observability
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import (
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"context"
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"log/slog"
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"strings"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc"
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"go.opentelemetry.io/otel/propagation"
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"go.opentelemetry.io/otel/sdk/resource"
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sdktrace "go.opentelemetry.io/otel/sdk/trace"
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semconv "go.opentelemetry.io/otel/semconv/v1.37.0"
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"go.opentelemetry.io/otel/trace"
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)
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func NewTracerProvider(ctx context.Context, logger *slog.Logger, serviceName, environment, otlpEndpoint string) (*sdktrace.TracerProvider, error) {
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res, err := resource.New(
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ctx,
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resource.WithAttributes(
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semconv.ServiceName(serviceName),
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semconv.DeploymentEnvironmentName(environment),
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),
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)
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if err != nil {
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return nil, err
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}
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providerOptions := []sdktrace.TracerProviderOption{sdktrace.WithResource(res)}
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endpoint := strings.TrimSpace(otlpEndpoint)
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if endpoint != "" {
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exporter, err := otlptracegrpc.New(
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ctx,
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otlptracegrpc.WithEndpoint(endpoint),
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otlptracegrpc.WithInsecure(),
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)
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if err != nil {
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return nil, err
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}
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providerOptions = append(providerOptions, sdktrace.WithBatcher(exporter))
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logger.Info("otlp tracing exporter enabled", slog.String("endpoint", endpoint))
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} else {
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logger.Info("otlp endpoint not set, traces will not be exported")
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}
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tp := sdktrace.NewTracerProvider(providerOptions...)
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otel.SetTracerProvider(tp)
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otel.SetTextMapPropagator(
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propagation.NewCompositeTextMapPropagator(
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propagation.TraceContext{},
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propagation.Baggage{},
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),
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)
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return tp, nil
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}
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func NewTracer(tp *sdktrace.TracerProvider, serviceName string) trace.Tracer {
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return tp.Tracer(serviceName)
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}
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