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goroutine.go
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goroutine.go
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 utils
import (
"fmt"
"io"
"os"
"runtime/debug"
)
var recoverLogger func(w io.Writer, r interface{}) = defaultRecoverLogger
// RegisterRecoverLogger replace the log handler when go with recover catch a panic
// notice the replaced handler should be simple.
// if the handler panic, the recover handler will be failed.
func RegisterRecoverLogger(f func(w io.Writer, r interface{})) {
recoverLogger = f
}
func defaultRecoverLogger(w io.Writer, r interface{}) {
fmt.Fprintf(w, "%s goroutine panic: %v\n%s\n", CacheTime(), r, string(debug.Stack()))
}
// GoWithRecover wraps a `go func()` with recover()
func GoWithRecover(handler func(), recoverHandler func(r interface{})) {
go func() {
defer func() {
if r := recover(); r != nil {
recoverLogger(os.Stderr, r)
if recoverHandler != nil {
go func() {
defer func() {
if p := recover(); p != nil {
recoverLogger(os.Stderr, p)
}
}()
recoverHandler(r)
}()
}
}
}()
handler()
}()
}