/
safety.go
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/
safety.go
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//
// Copyright (C) 2019-2020 Vdaas.org Vald team ( kpango, rinx, kmrmt )
//
// 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
//
// https://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 safety provides safety functionality like revcover
package safety
import (
"runtime"
"github.com/vdaas/vald/internal/errors"
"github.com/vdaas/vald/internal/info"
"github.com/vdaas/vald/internal/log"
)
func RecoverFunc(fn func() error) func() error {
return recoverFunc(fn, true)
}
func RecoverWithoutPanicFunc(fn func() error) func() error {
return recoverFunc(fn, false)
}
func recoverFunc(fn func() error, withPanic bool) func() error {
return func() (err error) {
defer func() {
if r := recover(); r != nil {
log.Warnf("recovered:\t%+v", r)
switch x := r.(type) {
case runtime.Error:
err = errors.ErrRuntimeError(err, x)
if withPanic {
log.Error(err, info.Get())
panic(err)
}
case string:
err = errors.ErrPanicString(err, x)
case error:
err = errors.Wrap(err, x.Error())
default:
err = errors.ErrPanicRecovered(err, x)
}
if err != nil {
log.Error(err, info.Get())
}
}
}()
err = fn()
return err
}
}