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Merge pull request #1403 from DataDog/fricounet/upstream/otel-tracing
Add opentelemetry tracing on gRPC calls for self-managed drivers
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| /* | ||
| Copyright 2023 The Kubernetes 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 gceGCEDriver | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
|
|
||
| "go.opentelemetry.io/otel" | ||
| "go.opentelemetry.io/otel/exporters/otlp/otlptrace" | ||
| "go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc" | ||
| "go.opentelemetry.io/otel/sdk/resource" | ||
| "go.opentelemetry.io/otel/sdk/trace" | ||
| "k8s.io/klog/v2" | ||
| ) | ||
|
|
||
| func InitOtelTracing() (*otlptrace.Exporter, error) { | ||
| // Setup OTLP exporter | ||
| ctx := context.Background() | ||
| exporter, err := otlptracegrpc.New(ctx) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to create the OTLP exporter: %w", err) | ||
| } | ||
|
|
||
| // Resource will auto populate spans with common attributes | ||
| resource, err := resource.New(ctx, | ||
| resource.WithFromEnv(), // pull attributes from OTEL_RESOURCE_ATTRIBUTES and OTEL_SERVICE_NAME environment variables | ||
| resource.WithProcess(), | ||
| resource.WithOS(), | ||
| resource.WithContainer(), | ||
| resource.WithHost(), | ||
| ) | ||
| if err != nil { | ||
| klog.Errorf("Failed to create the OTLP resource, spans will lack some metadata: %v", err) | ||
| } | ||
|
|
||
| // Create a trace provider with the exporter. | ||
| // Use propagator and sampler defined in environment variables. | ||
| traceProvider := trace.NewTracerProvider(trace.WithBatcher(exporter), trace.WithResource(resource)) | ||
|
|
||
| // Register the trace provider as global. | ||
| otel.SetTracerProvider(traceProvider) | ||
|
|
||
| return exporter, nil | ||
| } |
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