mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2024-12-12 10:04:29 +02:00
c4ba4811a2
* Add semconv/v1.7.0 package Generated from the v1.7.0 release of the specification using the semconvgen tool manually. This also updates the project to use this version of the semconv package. This does not include the prior, and missing, v1.5.0 and v1.6.0 versions of the semconv package. They are planned to be added in a follow-on PR. * Update CHANGELOG.md
122 lines
3.7 KiB
Go
122 lines
3.7 KiB
Go
// Copyright The OpenTelemetry 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.
|
|
|
|
// Example using OTLP exporters + collector + third-party backends. For
|
|
// information about using the exporter, see:
|
|
// https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp?tab=doc#example-package-Insecure
|
|
package main
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"log"
|
|
"time"
|
|
|
|
"google.golang.org/grpc"
|
|
|
|
"go.opentelemetry.io/otel"
|
|
"go.opentelemetry.io/otel/attribute"
|
|
"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc"
|
|
"go.opentelemetry.io/otel/propagation"
|
|
"go.opentelemetry.io/otel/sdk/resource"
|
|
sdktrace "go.opentelemetry.io/otel/sdk/trace"
|
|
semconv "go.opentelemetry.io/otel/semconv/v1.7.0"
|
|
"go.opentelemetry.io/otel/trace"
|
|
)
|
|
|
|
// Initializes an OTLP exporter, and configures the corresponding trace and
|
|
// metric providers.
|
|
func initProvider() func() {
|
|
ctx := context.Background()
|
|
|
|
res, err := resource.New(ctx,
|
|
resource.WithAttributes(
|
|
// the service name used to display traces in backends
|
|
semconv.ServiceNameKey.String("test-service"),
|
|
),
|
|
)
|
|
handleErr(err, "failed to create resource")
|
|
|
|
// If the OpenTelemetry Collector is running on a local cluster (minikube or
|
|
// microk8s), it should be accessible through the NodePort service at the
|
|
// `localhost:30080` endpoint. Otherwise, replace `localhost` with the
|
|
// endpoint of your cluster. If you run the app inside k8s, then you can
|
|
// probably connect directly to the service through dns
|
|
|
|
// Set up a trace exporter
|
|
traceExporter, err := otlptracegrpc.New(ctx,
|
|
otlptracegrpc.WithInsecure(),
|
|
otlptracegrpc.WithEndpoint("localhost:30080"),
|
|
otlptracegrpc.WithDialOption(grpc.WithBlock()),
|
|
)
|
|
handleErr(err, "failed to create trace exporter")
|
|
|
|
// Register the trace exporter with a TracerProvider, using a batch
|
|
// span processor to aggregate spans before export.
|
|
bsp := sdktrace.NewBatchSpanProcessor(traceExporter)
|
|
tracerProvider := sdktrace.NewTracerProvider(
|
|
sdktrace.WithSampler(sdktrace.AlwaysSample()),
|
|
sdktrace.WithResource(res),
|
|
sdktrace.WithSpanProcessor(bsp),
|
|
)
|
|
otel.SetTracerProvider(tracerProvider)
|
|
|
|
// set global propagator to tracecontext (the default is no-op).
|
|
otel.SetTextMapPropagator(propagation.TraceContext{})
|
|
|
|
return func() {
|
|
// Shutdown will flush any remaining spans and shut down the exporter.
|
|
handleErr(tracerProvider.Shutdown(ctx), "failed to shutdown TracerProvider")
|
|
}
|
|
}
|
|
|
|
func main() {
|
|
log.Printf("Waiting for connection...")
|
|
|
|
shutdown := initProvider()
|
|
defer shutdown()
|
|
|
|
tracer := otel.Tracer("test-tracer")
|
|
|
|
// labels represent additional key-value descriptors that can be bound to a
|
|
// metric observer or recorder.
|
|
commonLabels := []attribute.KeyValue{
|
|
attribute.String("labelA", "chocolate"),
|
|
attribute.String("labelB", "raspberry"),
|
|
attribute.String("labelC", "vanilla"),
|
|
}
|
|
|
|
// work begins
|
|
ctx, span := tracer.Start(
|
|
context.Background(),
|
|
"CollectorExporter-Example",
|
|
trace.WithAttributes(commonLabels...))
|
|
defer span.End()
|
|
for i := 0; i < 10; i++ {
|
|
_, iSpan := tracer.Start(ctx, fmt.Sprintf("Sample-%d", i))
|
|
log.Printf("Doing really hard work (%d / 10)\n", i+1)
|
|
|
|
<-time.After(time.Second)
|
|
iSpan.End()
|
|
}
|
|
|
|
log.Printf("Done!")
|
|
}
|
|
|
|
func handleErr(err error, message string) {
|
|
if err != nil {
|
|
log.Fatalf("%s: %v", message, err)
|
|
}
|
|
}
|