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move setupTracing into a separate file config_tracing.go
Signed-off-by: Benjamin Wang <wachao@vmware.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| // Copyright 2022 The etcd Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package embed | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
||
| "go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc" | ||
| "go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc" | ||
| "go.opentelemetry.io/otel/propagation" | ||
| "go.opentelemetry.io/otel/sdk/resource" | ||
| tracesdk "go.opentelemetry.io/otel/sdk/trace" | ||
| semconv "go.opentelemetry.io/otel/semconv/v1.4.0" | ||
| "go.uber.org/zap" | ||
| ) | ||
|
|
||
| func setupTracingExporter(ctx context.Context, cfg *Config) (exporter tracesdk.SpanExporter, options []otelgrpc.Option, err error) { | ||
| exporter, err = otlptracegrpc.New(ctx, | ||
| otlptracegrpc.WithInsecure(), | ||
| otlptracegrpc.WithEndpoint(cfg.ExperimentalDistributedTracingAddress), | ||
| ) | ||
| if err != nil { | ||
| return nil, nil, err | ||
| } | ||
|
|
||
| res, err := resource.New(ctx, | ||
| resource.WithAttributes( | ||
| semconv.ServiceNameKey.String(cfg.ExperimentalDistributedTracingServiceName), | ||
| ), | ||
| ) | ||
| if err != nil { | ||
| return nil, nil, err | ||
| } | ||
|
|
||
| if resWithIDKey := determineResourceWithIDKey(cfg.ExperimentalDistributedTracingServiceInstanceID); resWithIDKey != nil { | ||
| // Merge resources into a new | ||
| // resource in case of duplicates. | ||
| res, err = resource.Merge(res, resWithIDKey) | ||
| if err != nil { | ||
| return nil, nil, err | ||
| } | ||
| } | ||
|
|
||
| options = append(options, | ||
| otelgrpc.WithPropagators( | ||
| propagation.NewCompositeTextMapPropagator( | ||
| propagation.TraceContext{}, | ||
| propagation.Baggage{}, | ||
| ), | ||
| ), | ||
| otelgrpc.WithTracerProvider( | ||
| tracesdk.NewTracerProvider( | ||
| tracesdk.WithBatcher(exporter), | ||
| tracesdk.WithResource(res), | ||
| ), | ||
| ), | ||
| ) | ||
|
|
||
| cfg.logger.Debug( | ||
| "distributed tracing enabled", | ||
| zap.String("address", cfg.ExperimentalDistributedTracingAddress), | ||
| zap.String("service-name", cfg.ExperimentalDistributedTracingServiceName), | ||
| zap.String("service-instance-id", cfg.ExperimentalDistributedTracingServiceInstanceID), | ||
| ) | ||
|
|
||
| return exporter, options, err | ||
| } | ||
|
|
||
| // As Tracing service Instance ID must be unique, it should | ||
| // never use the empty default string value, it's set if | ||
| // if it's a non empty string. | ||
| func determineResourceWithIDKey(serviceInstanceID string) *resource.Resource { | ||
| if serviceInstanceID != "" { | ||
| return resource.NewSchemaless( | ||
| (semconv.ServiceInstanceIDKey.String(serviceInstanceID)), | ||
| ) | ||
| } | ||
| return nil | ||
| } |
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