mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2024-12-20 19:52:56 +02:00
521a6c40f1
* move event to sdk. * move trace and span implementation to sdk. - also added noop implementation of span and trace. * fix review comments.
75 lines
1.8 KiB
Go
75 lines
1.8 KiB
Go
// Copyright 2019, 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.
|
|
|
|
package main
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"net/http"
|
|
|
|
"google.golang.org/grpc/codes"
|
|
|
|
"github.com/open-telemetry/opentelemetry-go/api/tag"
|
|
apitrace "github.com/open-telemetry/opentelemetry-go/api/trace"
|
|
_ "github.com/open-telemetry/opentelemetry-go/exporter/loader"
|
|
"github.com/open-telemetry/opentelemetry-go/plugin/httptrace"
|
|
"github.com/open-telemetry/opentelemetry-go/sdk/trace"
|
|
)
|
|
|
|
var (
|
|
tracer = trace.Register().
|
|
WithService("client").
|
|
WithComponent("main").
|
|
WithResources(
|
|
tag.New("whatevs").String("yesss"),
|
|
)
|
|
)
|
|
|
|
func main() {
|
|
fmt.Printf("Tracer %v\n", tracer)
|
|
client := http.DefaultClient
|
|
ctx := tag.NewContext(context.Background(),
|
|
tag.Insert(tag.New("username").String("donuts")),
|
|
)
|
|
|
|
var body []byte
|
|
|
|
err := tracer.WithSpan(ctx, "say hello",
|
|
func(ctx context.Context) error {
|
|
req, _ := http.NewRequest("GET", "http://localhost:7777/hello", nil)
|
|
|
|
ctx, req, inj := httptrace.W3C(ctx, req)
|
|
|
|
apitrace.Inject(ctx, inj)
|
|
|
|
res, err := client.Do(req)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
body, err = ioutil.ReadAll(res.Body)
|
|
res.Body.Close()
|
|
apitrace.Active(ctx).SetStatus(codes.OK)
|
|
|
|
return err
|
|
})
|
|
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
fmt.Printf("%s", body)
|
|
}
|