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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,76 @@ | ||
package telemetry | ||
|
||
import ( | ||
"context" | ||
"go.opentelemetry.io/otel" | ||
"go.opentelemetry.io/otel/exporters/jaeger" | ||
"go.opentelemetry.io/otel/propagation" | ||
"go.opentelemetry.io/otel/sdk/resource" | ||
sdktrace "go.opentelemetry.io/otel/sdk/trace" | ||
semconv "go.opentelemetry.io/otel/semconv/v1.10.0" | ||
"go.opentelemetry.io/otel/trace" | ||
"os" | ||
) | ||
|
||
type Jaeger struct { | ||
provider *sdktrace.TracerProvider | ||
tracer trace.Tracer | ||
} | ||
|
||
func NewJaeger(ctx context.Context, serviceName string) (*Jaeger, error) { | ||
var tp *sdktrace.TracerProvider | ||
var err error | ||
tp, err = createJaegerTraceProvider(ctx, serviceName) | ||
if err != nil { | ||
return nil, err | ||
} | ||
otel.SetTracerProvider(tp) | ||
otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(propagation.TraceContext{}, propagation.Baggage{})) | ||
tracer := tp.Tracer(serviceName) | ||
|
||
return &Jaeger{ | ||
provider: tp, | ||
tracer: tracer, | ||
}, nil | ||
} | ||
|
||
func (ot *Jaeger) Start(ctx context.Context, name string, opts ...trace.SpanStartOption) (context.Context, Span) { | ||
if len(opts) == 0 { | ||
return ot.tracer.Start(ctx, name) | ||
} | ||
return ot.tracer.Start(ctx, name, opts[0]) | ||
} | ||
|
||
func (ot *Jaeger) Shutdown(ctx context.Context) { | ||
ot.provider.Shutdown(ctx) | ||
} | ||
|
||
func createJaegerTraceProvider(ctx context.Context, serviceName string) (*sdktrace.TracerProvider, error) { | ||
res, err := resource.New(ctx, | ||
resource.WithAttributes( | ||
semconv.ServiceNameKey.String(serviceName), | ||
), | ||
) | ||
if err != nil { | ||
return nil, err | ||
} | ||
|
||
exp, err := jaeger.New( | ||
jaeger.WithCollectorEndpoint( | ||
jaeger.WithEndpoint(os.Getenv("OTEL_EXPORTER_OTLP_ENDPOINT")), | ||
), | ||
) | ||
if err != nil { | ||
return nil, err | ||
} | ||
tp := sdktrace.NewTracerProvider( | ||
sdktrace.WithBatcher(exp), | ||
sdktrace.WithResource(res), | ||
sdktrace.WithResource(resource.NewWithAttributes( | ||
semconv.SchemaURL, | ||
semconv.ServiceNameKey.String(serviceName), | ||
semconv.DeploymentEnvironmentKey.String("prod"), //@todo get from env | ||
)), | ||
) | ||
return tp, nil | ||
} |
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