40 lines
980 B
Go
40 lines
980 B
Go
package main
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import (
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"log"
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"os"
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"os/signal"
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"syscall"
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"github.com/mitchellh/packer/packer"
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"github.com/mitchellh/packer/packer/plugin"
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)
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// Prepares the signal handlers so that we handle interrupts properly.
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// The signal handler exists in a goroutine.
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func setupSignalHandlers(ui packer.Ui) {
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ch := make(chan os.Signal, 1)
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signal.Notify(ch, os.Interrupt)
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signal.Notify(ch, syscall.SIGTERM)
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go func() {
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// First interrupt. We mostly ignore this because it allows the
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// plugins time to cleanup.
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<-ch
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log.Println("First interrupt. Ignoring to allow plugins to clean up.")
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ui.Error("Interrupt signal received. Cleaning up...")
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// Second interrupt. Go down hard.
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<-ch
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log.Println("Second interrupt. Exiting now.")
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ui.Error("Interrupt signal received twice. Forcefully exiting now.")
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// Force kill all the plugins, but mark that we're killing them
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// first so that we don't get panics everywhere.
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plugin.CleanupClients()
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os.Exit(1)
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}()
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}
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