mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2024-12-14 10:13:10 +02:00
85 lines
2.2 KiB
Go
85 lines
2.2 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.
|
|
|
|
// Command zipkin is an example program that creates spans
|
|
// and uploads to openzipkin collector.
|
|
package main
|
|
|
|
import (
|
|
"context"
|
|
"flag"
|
|
"log"
|
|
"os"
|
|
"time"
|
|
|
|
"go.opentelemetry.io/otel/api/global"
|
|
|
|
"go.opentelemetry.io/otel/exporters/trace/zipkin"
|
|
sdktrace "go.opentelemetry.io/otel/sdk/trace"
|
|
)
|
|
|
|
var logger = log.New(os.Stderr, "zipkin-example", log.Ldate|log.Ltime|log.Llongfile)
|
|
|
|
// initTracer creates a new trace provider instance and registers it as global trace provider.
|
|
func initTracer(url string) {
|
|
// Create Zipkin Exporter
|
|
exporter, err := zipkin.NewExporter(
|
|
url,
|
|
"zipkin-example",
|
|
zipkin.WithLogger(logger),
|
|
)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
// For demoing purposes, always sample. In a production application, you should
|
|
// configure this to a trace.ProbabilitySampler set at the desired
|
|
// probability.
|
|
tp, err := sdktrace.NewProvider(
|
|
sdktrace.WithConfig(sdktrace.Config{DefaultSampler: sdktrace.AlwaysSample()}),
|
|
sdktrace.WithBatcher(exporter,
|
|
sdktrace.WithBatchTimeout(5),
|
|
sdktrace.WithMaxExportBatchSize(10),
|
|
),
|
|
)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
global.SetTraceProvider(tp)
|
|
}
|
|
|
|
func main() {
|
|
url := flag.String("zipkin", "http://localhost:9411/api/v2/spans", "zipkin url")
|
|
flag.Parse()
|
|
|
|
initTracer(*url)
|
|
|
|
ctx := context.Background()
|
|
|
|
tr := global.TraceProvider().Tracer("component-main")
|
|
ctx, span := tr.Start(ctx, "foo")
|
|
<-time.After(6 * time.Millisecond)
|
|
bar(ctx)
|
|
<-time.After(6 * time.Millisecond)
|
|
span.End()
|
|
<-time.After(24 * time.Millisecond)
|
|
}
|
|
|
|
func bar(ctx context.Context) {
|
|
tr := global.TraceProvider().Tracer("component-bar")
|
|
_, span := tr.Start(ctx, "bar")
|
|
<-time.After(6 * time.Millisecond)
|
|
span.End()
|
|
}
|