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and add to controllers so they can generate root spans.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| /* | ||
| Copyright 2024 the Unikorn 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 otel | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
||
| "github.com/spf13/pflag" | ||
| "go.opentelemetry.io/otel" | ||
| "go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp" | ||
| "go.opentelemetry.io/otel/propagation" | ||
| "go.opentelemetry.io/otel/sdk/trace" | ||
|
|
||
| "sigs.k8s.io/controller-runtime/pkg/log" | ||
| ) | ||
|
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| // Options defines common controller options. | ||
| type Options struct { | ||
| // OTLPEndpoint defines whether to ship spans to an OTLP consumer or | ||
| // not, and where to send them to. | ||
| OTLPEndpoint string | ||
| } | ||
|
|
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| func (o *Options) AddFlags(f *pflag.FlagSet) { | ||
| f.StringVar(&o.OTLPEndpoint, "otlp-endpoint", "", "An optional OTLP endpoint to ship spans to.") | ||
| } | ||
|
|
||
| // Setup creates enough infrastructure to enable span creation, shipping and | ||
| // trace contect propagation. | ||
| func (o *Options) Setup(ctx context.Context, opts ...trace.TracerProviderOption) error { | ||
| otel.SetLogger(log.Log) | ||
|
|
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| otel.SetTextMapPropagator(propagation.TraceContext{}) | ||
|
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| if o.OTLPEndpoint != "" { | ||
| exporter, err := otlptracehttp.New(ctx, | ||
| otlptracehttp.WithEndpoint(o.OTLPEndpoint), | ||
| otlptracehttp.WithInsecure(), | ||
| ) | ||
|
|
||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
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| opts = append(opts, trace.WithBatcher(exporter)) | ||
| } | ||
|
|
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| otel.SetTracerProvider(trace.NewTracerProvider(opts...)) | ||
|
|
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| return nil | ||
| } |