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safe.go
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/
safe.go
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// Copyright 2018 Istio 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 safecall
import (
"fmt"
)
// Execute run the fn and in case of any panic, will be return it as an error.
func Execute(name string, fn func()) (err error) {
// Try to detect panic, even if panic was called with nil.
reachedEnd := false
defer func() {
if reachedEnd {
return
}
r := recover()
err = fmt.Errorf("panic during %v: '%v' ", name, r)
}()
fn()
reachedEnd = true
return
}