55 lines
1.2 KiB
Go
55 lines
1.2 KiB
Go
package main
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import (
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"os"
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"os/signal"
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"syscall"
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"time"
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)
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func waitForSignal(errC chan error, shutdownC chan struct{}) error {
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signals := make(chan os.Signal, 10)
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signal.Notify(signals, syscall.SIGTERM, syscall.SIGINT)
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defer signal.Stop(signals)
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select {
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case err := <-errC:
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close(shutdownC)
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return err
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case <-signals:
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close(shutdownC)
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case <-shutdownC:
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}
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return nil
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}
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func waitForSignalWithGraceShutdown(errC chan error, shutdownC, graceShutdownSignal chan struct{}, gracePeriod time.Duration) error {
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signals := make(chan os.Signal, 10)
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signal.Notify(signals, syscall.SIGTERM, syscall.SIGINT)
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defer signal.Stop(signals)
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select {
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case err := <-errC:
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close(graceShutdownSignal)
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close(shutdownC)
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return err
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case <-signals:
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close(graceShutdownSignal)
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logger.Infof("Initiating graceful shutdown...")
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// Unregister signal handler early, so the client can send a second SIGTERM/SIGINT
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// to force shutdown cloudflared
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signal.Stop(signals)
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graceTimerTick := time.Tick(gracePeriod)
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// send close signal via shutdownC when grace period expires or when an
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// error is encountered.
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select {
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case <-graceTimerTick:
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case <-errC:
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}
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close(shutdownC)
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case <-shutdownC:
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}
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return nil
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}
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