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safeutil.go
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safeutil.go
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// Copyright The Karpor 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 safeutil
import (
"context"
"fmt"
"runtime/debug"
"github.com/KusionStack/karpor/pkg/util/ctxutil"
"github.com/elliotxx/safe"
"github.com/go-logr/logr"
"k8s.io/klog/v2"
)
// LoggerRecoverHandler returns a recover handler by the given logger.
//
// Example:
//
// func() {
// defer safe.HandleCrash(RecoverHandler(ctx, errChan))
// ...
// }
func RecoverHandler(ctx context.Context, errChan chan error) safe.RecoverHandler {
return func(r any) {
logger := ctxutil.GetLogger(ctx)
err := fmt.Errorf("%v", r)
if errChan != nil {
errChan <- err
}
logger.Error(err, "Recovered from panic", "stackTrace", string(debug.Stack()))
}
}
// LoggerRecoverHandler returns a recover handler by the given logger.
//
// Example:
//
// func() {
// defer safe.HandleCrash(LoggerRecoverHandler(ctxutil.GetLogger(ctx)))
// ...
// }
func LoggerRecoverHandler(logger logr.Logger) safe.RecoverHandler {
return func(r any) {
err := fmt.Errorf("%v", r)
logger.Error(err, "Recovered from panic", "stackTrace", string(debug.Stack()))
}
}
// Go starts a recoverable goroutine with a new logger (klog.NewKlogr()).
//
// Example:
//
// safeutil.Go(func(){...})
func Go(do safe.DoFunc) {
safe.GoR(do, LoggerRecoverHandler(klog.NewKlogr()))
}
// GoL starts a recoverable goroutine with a given logger.
//
// Example:
//
// safeutil.GoL(func(){...}, logger)
func GoL(do safe.DoFunc, logger logr.Logger) {
safe.GoR(do, LoggerRecoverHandler(logger))
}