mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-24 05:50:22 +00:00
81 lines
2.7 KiB
Go
81 lines
2.7 KiB
Go
|
/*
|
||
|
|
Copyright 2021 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 traces
|
||
|
|
|
||
|
|
import (
|
||
|
|
"context"
|
||
|
|
"net/http"
|
||
|
|
|
||
|
|
"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
|
||
|
|
"go.opentelemetry.io/otel/exporters/otlp"
|
||
|
|
"go.opentelemetry.io/otel/exporters/otlp/otlpgrpc"
|
||
|
|
"go.opentelemetry.io/otel/propagation"
|
||
|
|
"go.opentelemetry.io/otel/sdk/resource"
|
||
|
|
sdktrace "go.opentelemetry.io/otel/sdk/trace"
|
||
|
|
"go.opentelemetry.io/otel/trace"
|
||
|
|
|
||
|
|
"k8s.io/client-go/transport"
|
||
|
|
"k8s.io/klog/v2"
|
||
|
|
)
|
||
|
|
|
||
|
|
// NewProvider initializes tracing in the component, and enforces recommended tracing behavior.
|
||
|
|
func NewProvider(ctx context.Context, baseSampler sdktrace.Sampler, resourceOpts []resource.Option, opts ...otlpgrpc.Option) trace.TracerProvider {
|
||
|
|
opts = append(opts, otlpgrpc.WithInsecure())
|
||
|
|
driver := otlpgrpc.NewDriver(opts...)
|
||
|
|
exporter, err := otlp.NewExporter(ctx, driver)
|
||
|
|
if err != nil {
|
||
|
|
klog.Fatalf("Failed to create OTLP exporter: %v", err)
|
||
|
|
}
|
||
|
|
|
||
|
|
res, err := resource.New(ctx, resourceOpts...)
|
||
|
|
if err != nil {
|
||
|
|
klog.Fatalf("Failed to create resource: %v", err)
|
||
|
|
}
|
||
|
|
|
||
|
|
bsp := sdktrace.NewBatchSpanProcessor(exporter)
|
||
|
|
|
||
|
|
return sdktrace.NewTracerProvider(
|
||
|
|
sdktrace.WithSampler(sdktrace.ParentBased(baseSampler)),
|
||
|
|
sdktrace.WithSpanProcessor(bsp),
|
||
|
|
sdktrace.WithResource(res),
|
||
|
|
)
|
||
|
|
}
|
||
|
|
|
||
|
|
// WrapperFor can be used to add tracing to a *rest.Config. Example usage:
|
||
|
|
// tp := traces.NewProvider(...)
|
||
|
|
// config, _ := rest.InClusterConfig()
|
||
|
|
// config.Wrap(traces.WrapperFor(&tp))
|
||
|
|
// kubeclient, _ := clientset.NewForConfig(config)
|
||
|
|
func WrapperFor(tp *trace.TracerProvider) transport.WrapperFunc {
|
||
|
|
return func(rt http.RoundTripper) http.RoundTripper {
|
||
|
|
opts := []otelhttp.Option{
|
||
|
|
otelhttp.WithPropagators(Propagators()),
|
||
|
|
}
|
||
|
|
if tp != nil {
|
||
|
|
opts = append(opts, otelhttp.WithTracerProvider(*tp))
|
||
|
|
}
|
||
|
|
// Even if there is no TracerProvider, the otelhttp still handles context propagation.
|
||
|
|
// See https://github.com/open-telemetry/opentelemetry-go/tree/main/example/passthrough
|
||
|
|
return otelhttp.NewTransport(rt, opts...)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Propagators returns the recommended set of propagators.
|
||
|
|
func Propagators() propagation.TextMapPropagator {
|
||
|
|
return propagation.NewCompositeTextMapPropagator(propagation.TraceContext{}, propagation.Baggage{})
|
||
|
|
}
|