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34 lines
709 B
Go
34 lines
709 B
Go
// Copyright 2017 Drone.IO Inc.
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//
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// This file is licensed under the terms of the MIT license.
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// For a copy, see https://opensource.org/licenses/MIT.
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package main
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import (
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"context"
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"os"
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"os/signal"
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"syscall"
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)
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// WithContextFunc returns a copy of parent context that is canceled when
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// an os interrupt signal is received. The callback function f is invoked
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// before cancellation.
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func WithContextFunc(ctx context.Context, f func()) context.Context {
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ctx, cancel := context.WithCancel(ctx)
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go func() {
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c := make(chan os.Signal, 1)
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signal.Notify(c, syscall.SIGINT, syscall.SIGTERM)
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defer signal.Stop(c)
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select {
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case <-ctx.Done():
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case <-c:
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f()
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cancel()
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}
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}()
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return ctx
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}
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