This commit is contained in:
李子铭 2025-03-24 14:12:11 +08:00
parent 1a07ff016d
commit 33d456b5d3
2 changed files with 78 additions and 0 deletions

View File

@ -16,3 +16,21 @@ func (valueOnlyContext) Err() error { return nil }
func CopyValueCtx(ctx context.Context) context.Context {
return valueOnlyContext{ctx}
}
// RunTaskWithTimeout 带有超时控制的任务执行函数
func RunTaskWithTimeout(ctx context.Context, task func(ctx context.Context) error, timeout time.Duration) error {
ctx, cancel := context.WithTimeout(ctx, timeout)
defer cancel()
done := make(chan error, 1)
go func() {
done <- task(ctx)
}()
select {
case err := <-done:
return err
case <-ctx.Done():
return ctx.Err()
}
}

View File

@ -0,0 +1,60 @@
package helper
import (
"context"
"fmt"
"sync"
"testing"
"time"
)
// 模拟服务端任务
func mockServerTask(ctx context.Context) error {
// 模拟从 context 中获取数据
value := ctx.Value("testKey")
if value == nil {
return fmt.Errorf("testKey not found in context")
}
// 模拟耗时操作
for i := 0; i < 5; i++ {
select {
case <-ctx.Done():
return ctx.Err()
default:
fmt.Printf("Task is running... Step %d\n", i+1)
time.Sleep(1 * time.Second)
}
}
fmt.Println("Task completed successfully")
return nil
}
func TestCopyValueCtx(t *testing.T) {
// 创建带有值的原始 context
originalCtx := context.WithValue(context.Background(), "testKey", "testValue")
// 模拟客户端取消 context
clientCtx, cancel := context.WithCancel(originalCtx)
defer cancel()
// 复制只有 value 的 context
serverCtx := CopyValueCtx(clientCtx)
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
// 执行带有超时控制的任务
err := RunTaskWithTimeout(serverCtx, mockServerTask, 10*time.Second)
if err != nil {
fmt.Printf("Task failed: %v\n", err)
}
}()
// 模拟客户端断开连接
time.Sleep(2 * time.Second)
wg.Wait()
}