83 lines
2.3 KiB
Go
83 lines
2.3 KiB
Go
package telemetry
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import (
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"context"
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"time"
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"github.com/tigorlazuardi/bluemage/go/config"
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"github.com/tigorlazuardi/bluemage/go/pkg/errs"
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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/exporters/otlp/otlptrace/otlptracehttp"
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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/v1.4.0"
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)
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type Telemetry struct {
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tracer *sdktrace.TracerProvider
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}
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func New(ctx context.Context, cfg *config.Config) (tele Telemetry, err error) {
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otel.SetTextMapPropagator(createPropagator())
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provider, err := createProvider(ctx, cfg)
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if err != nil {
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return tele, err
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}
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tele.tracer = provider
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otel.SetTracerProvider(provider)
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return tele, err
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}
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func createPropagator() propagation.TextMapPropagator {
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return propagation.NewCompositeTextMapPropagator(propagation.TraceContext{}, propagation.Baggage{})
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}
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func createProvider(ctx context.Context, cfg *config.Config) (*sdktrace.TracerProvider, error) {
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opts := []sdktrace.TracerProviderOption{
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sdktrace.WithSampler(sdktrace.TraceIDRatioBased(cfg.Float64("telemetry.trace.ratio"))),
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}
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if cfg.Bool("telemetry.openobserve.enable") && cfg.Bool("telemetry.openobserve.trace.enable") {
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url := cfg.String("telemetry.openobserve.trace.url")
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o2exporter, err := otlptracehttp.New(ctx,
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otlptracehttp.WithEndpointURL(url),
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otlptracehttp.WithHeaders(map[string]string{
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"Authorization": cfg.String("telemetry.openobserve.trace.auth"),
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}),
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)
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if err != nil {
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return nil, errs.Wrap(err, "failed to create otlptracehttp exporter")
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}
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opts = append(opts, sdktrace.WithBatcher(o2exporter))
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}
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res := NewResource(cfg)
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opts = append(opts, sdktrace.WithResource(res))
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return sdktrace.NewTracerProvider(opts...), nil
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}
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func (te *Telemetry) Close() error {
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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return te.tracer.Shutdown(ctx)
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}
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func NewResource(cfg *config.Config) *resource.Resource {
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res, err := resource.Merge(resource.Default(), resource.NewWithAttributes(
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semconv.SchemaURL,
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semconv.ServiceNameKey.String("bluemage"),
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semconv.ServiceVersionKey.String(cfg.String("runtime.version")),
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attribute.String("environment", cfg.String("runtime.environment")),
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))
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if err != nil {
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panic(err)
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}
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return res
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}
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