mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2025-01-01 22:09:57 +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.
65 lines
1.8 KiB
Go
65 lines
1.8 KiB
Go
// Copyright 2019, OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"io"
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"net/http"
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"github.com/open-telemetry/opentelemetry-go/api/core"
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"github.com/open-telemetry/opentelemetry-go/api/tag"
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apitrace "github.com/open-telemetry/opentelemetry-go/api/trace"
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"github.com/open-telemetry/opentelemetry-go/plugin/httptrace"
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_ "github.com/open-telemetry/opentelemetry-go/exporter/loader"
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"github.com/open-telemetry/opentelemetry-go/sdk/event"
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"github.com/open-telemetry/opentelemetry-go/sdk/trace"
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)
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var (
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tracer = trace.Register().
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WithService("server").
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WithComponent("main").
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WithResources(
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tag.New("whatevs").String("nooooo"),
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)
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)
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func main() {
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helloHandler := func(w http.ResponseWriter, req *http.Request) {
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attrs, tags, spanCtx := httptrace.Extract(req)
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req = req.WithContext(tag.WithMap(req.Context(), tag.NewMap(core.KeyValue{}, tags, core.Mutator{}, nil)))
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ctx, span := tracer.Start(
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req.Context(),
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"hello",
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apitrace.WithAttributes(attrs...),
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apitrace.ChildOf(spanCtx),
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)
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defer span.Finish()
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span.AddEvent(ctx, event.WithString("handling this..."))
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io.WriteString(w, "Hello, world!\n")
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}
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http.HandleFunc("/hello", helloHandler)
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err := http.ListenAndServe(":7777", nil)
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if err != nil {
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panic(err)
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}
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}
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