mirror of https://github.com/k3s-io/k3s
59 lines
1.4 KiB
Go
59 lines
1.4 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package util
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import (
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"encoding/json"
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"fmt"
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"log"
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"runtime"
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"time"
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)
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// Simply catches a crash and logs an error. Meant to be called via defer.
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func HandleCrash() {
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r := recover()
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if r != nil {
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callers := ""
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for i := 0; true; i++ {
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_, file, line, ok := runtime.Caller(i)
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if !ok {
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break
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}
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callers = callers + fmt.Sprintf("%v:%v\n", file, line)
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}
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log.Printf("Recovered from panic: %#v (%v)\n%v", r, r, callers)
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}
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}
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// Loops forever running f every d. Catches any panics, and keeps going.
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func Forever(f func(), period time.Duration) {
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for {
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func() {
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defer HandleCrash()
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f()
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}()
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time.Sleep(period)
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}
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}
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// Returns o marshalled as a JSON string, ignoring any errors.
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func MakeJSONString(o interface{}) string {
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data, _ := json.Marshal(o)
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return string(data)
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}
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