/
jaeger.go
52 lines (45 loc) · 1.42 KB
/
jaeger.go
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package tracing
import (
"context"
"fmt"
"net"
"github.com/smallnest/rpcx/share"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/exporters/jaeger"
"go.opentelemetry.io/otel/propagation"
"go.opentelemetry.io/otel/sdk/resource"
"go.opentelemetry.io/otel/sdk/trace"
semconv "go.opentelemetry.io/otel/semconv/v1.4.0"
)
func InitJaeger(serviceName string, agentHostPort string) (*trace.TracerProvider, context.Context, error) {
ctx := context.WithValue(context.Background(), share.ReqMetaDataKey, make(map[string]string))
// Create a new configuration object for Jaeger.
host, port, err := net.SplitHostPort(agentHostPort)
if err != nil {
return nil, ctx, err
}
exporter, err := jaeger.New(jaeger.WithAgentEndpoint(jaeger.WithAgentHost(host), jaeger.WithAgentPort(port)))
if err != nil {
return nil, ctx, fmt.Errorf("failed to create exporter: %v", err)
}
resources, err := resource.New(
context.Background(),
resource.WithAttributes(
semconv.ServiceNameKey.String(serviceName),
),
resource.WithTelemetrySDK(),
)
if err != nil {
return nil, ctx, fmt.Errorf("failed to create resource: %v", err)
}
tracerProvider := trace.NewTracerProvider(
trace.WithBatcher(exporter),
trace.WithResource(resources),
)
otel.SetTracerProvider(tracerProvider)
otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(
propagation.TraceContext{},
propagation.Baggage{},
))
return tracerProvider, ctx, nil
}