38 lines
773 B
Go
38 lines
773 B
Go
package command
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import (
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"context"
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"fmt"
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"os"
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"os/signal"
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"syscall"
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packersdk "github.com/hashicorp/packer/packer-plugin-sdk/packer"
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)
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func handleTermInterrupt(ui packersdk.Ui) (context.Context, func()) {
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ctx, cancelCtx := context.WithCancel(context.Background())
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// Handle interrupts for this build
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sigCh := make(chan os.Signal, 1)
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signal.Notify(sigCh, os.Interrupt, syscall.SIGTERM)
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cleanup := func() {
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cancelCtx()
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signal.Stop(sigCh)
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close(sigCh)
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}
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go func() {
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select {
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case sig := <-sigCh:
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if sig == nil {
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// context got cancelled and this closed chan probably
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// triggered first
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return
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}
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ui.Error(fmt.Sprintf("Cancelling build after receiving %s", sig))
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cancelCtx()
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case <-ctx.Done():
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}
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}()
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return ctx, cleanup
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}
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