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Member "mattermost-server-6.0.1/vendor/github.com/sirupsen/logrus/alt_exit.go" (18 Oct 2021, 2802 Bytes) of package /linux/www/mattermost-server-6.0.1.tar.gz:


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    1 package logrus
    2 
    3 // The following code was sourced and modified from the
    4 // https://github.com/tebeka/atexit package governed by the following license:
    5 //
    6 // Copyright (c) 2012 Miki Tebeka <miki.tebeka@gmail.com>.
    7 //
    8 // Permission is hereby granted, free of charge, to any person obtaining a copy of
    9 // this software and associated documentation files (the "Software"), to deal in
   10 // the Software without restriction, including without limitation the rights to
   11 // use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
   12 // the Software, and to permit persons to whom the Software is furnished to do so,
   13 // subject to the following conditions:
   14 //
   15 // The above copyright notice and this permission notice shall be included in all
   16 // copies or substantial portions of the Software.
   17 //
   18 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   19 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
   20 // FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
   21 // COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
   22 // IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   23 // CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   24 
   25 import (
   26     "fmt"
   27     "os"
   28 )
   29 
   30 var handlers = []func(){}
   31 
   32 func runHandler(handler func()) {
   33     defer func() {
   34         if err := recover(); err != nil {
   35             fmt.Fprintln(os.Stderr, "Error: Logrus exit handler error:", err)
   36         }
   37     }()
   38 
   39     handler()
   40 }
   41 
   42 func runHandlers() {
   43     for _, handler := range handlers {
   44         runHandler(handler)
   45     }
   46 }
   47 
   48 // Exit runs all the Logrus atexit handlers and then terminates the program using os.Exit(code)
   49 func Exit(code int) {
   50     runHandlers()
   51     os.Exit(code)
   52 }
   53 
   54 // RegisterExitHandler appends a Logrus Exit handler to the list of handlers,
   55 // call logrus.Exit to invoke all handlers. The handlers will also be invoked when
   56 // any Fatal log entry is made.
   57 //
   58 // This method is useful when a caller wishes to use logrus to log a fatal
   59 // message but also needs to gracefully shutdown. An example usecase could be
   60 // closing database connections, or sending a alert that the application is
   61 // closing.
   62 func RegisterExitHandler(handler func()) {
   63     handlers = append(handlers, handler)
   64 }
   65 
   66 // DeferExitHandler prepends a Logrus Exit handler to the list of handlers,
   67 // call logrus.Exit to invoke all handlers. The handlers will also be invoked when
   68 // any Fatal log entry is made.
   69 //
   70 // This method is useful when a caller wishes to use logrus to log a fatal
   71 // message but also needs to gracefully shutdown. An example usecase could be
   72 // closing database connections, or sending a alert that the application is
   73 // closing.
   74 func DeferExitHandler(handler func()) {
   75     handlers = append([]func(){handler}, handlers...)
   76 }