77 lines
2.7 KiB
Go
77 lines
2.7 KiB
Go
package logrus
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// The following code was sourced and modified from the
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// https://github.com/tebeka/atexit package governed by the following license:
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//
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// Copyright (c) 2012 Miki Tebeka <miki.tebeka@gmail.com>.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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import (
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"fmt"
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"os"
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)
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var handlers = []func(){}
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func runHandler(handler func()) {
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defer func() {
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if err := recover(); err != nil {
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fmt.Fprintln(os.Stderr, "Error: Logrus exit handler error:", err)
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}
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}()
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handler()
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}
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func runHandlers() {
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for _, handler := range handlers {
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runHandler(handler)
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}
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}
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// Exit runs all the Logrus atexit handlers and then terminates the program using os.Exit(code)
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func Exit(code int) {
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runHandlers()
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os.Exit(code)
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}
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// RegisterExitHandler appends a Logrus Exit handler to the list of handlers,
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// call logrus.Exit to invoke all handlers. The handlers will also be invoked when
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// any Fatal log entry is made.
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//
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// This method is useful when a caller wishes to use logrus to log a fatal
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// message but also needs to gracefully shutdown. An example usecase could be
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// closing database connections, or sending a alert that the application is
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// closing.
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func RegisterExitHandler(handler func()) {
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handlers = append(handlers, handler)
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}
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// DeferExitHandler prepends a Logrus Exit handler to the list of handlers,
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// call logrus.Exit to invoke all handlers. The handlers will also be invoked when
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// any Fatal log entry is made.
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//
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// This method is useful when a caller wishes to use logrus to log a fatal
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// message but also needs to gracefully shutdown. An example usecase could be
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// closing database connections, or sending a alert that the application is
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// closing.
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func DeferExitHandler(handler func()) {
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handlers = append([]func(){handler}, handlers...)
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}
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