github.com/mysteriumnetwork/node@v0.0.0-20240516044423-365054f76801/cmd/interrupts.go (about)

     1  /*
     2   * Copyright (C) 2017 The "MysteriumNetwork/node" Authors.
     3   *
     4   * This program is free software: you can redistribute it and/or modify
     5   * it under the terms of the GNU General Public License as published by
     6   * the Free Software Foundation, either version 3 of the License, or
     7   * (at your option) any later version.
     8   *
     9   * This program is distributed in the hope that it will be useful,
    10   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    11   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    12   * GNU General Public License for more details.
    13   *
    14   * You should have received a copy of the GNU General Public License
    15   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    16   */
    17  
    18  package cmd
    19  
    20  import (
    21  	"os"
    22  	"os/signal"
    23  	"syscall"
    24  )
    25  
    26  // SignalCallback is invoked when process receives signals defined below
    27  type SignalCallback func()
    28  
    29  // RegisterSignalCallback registers given callback to call on SIGTERM and SIGHUP interrupts
    30  func RegisterSignalCallback(callback SignalCallback) {
    31  	sigterm := make(chan os.Signal, 1)
    32  	signal.Notify(sigterm, os.Interrupt, syscall.SIGTERM, syscall.SIGHUP)
    33  
    34  	go waitTerminationSignal(sigterm, callback)
    35  }
    36  
    37  func waitTerminationSignal(termination chan os.Signal, callback SignalCallback) {
    38  	<-termination
    39  	callback()
    40  }