mirror of
https://github.com/Luzifer/nginx-sso.git
synced 2024-12-21 05:11:17 +00:00
42 lines
1.1 KiB
Go
42 lines
1.1 KiB
Go
|
// Copyright 2017, OpenCensus 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 trace_test
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
|
||
|
|
"go.opencensus.io/trace"
|
||
|
|
"golang.org/x/net/context"
|
||
|
|
)
|
||
|
|
|
||
|
|
// This example shows how to use StartSpan and (*Span).End to capture
|
||
|
|
// a function execution in a Span. It assumes that the function
|
||
|
|
// has a context.Context argument.
|
||
|
|
func ExampleStartSpan() {
|
||
|
|
printEvens := func(ctx context.Context) {
|
||
|
|
ctx, span := trace.StartSpan(ctx, "my/package.Function")
|
||
|
|
defer span.End()
|
||
|
|
|
||
|
|
for i := 0; i < 10; i++ {
|
||
|
|
if i%2 == 0 {
|
||
|
|
fmt.Printf("Even!\n")
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
ctx := context.Background()
|
||
|
|
printEvens(ctx)
|
||
|
|
}
|