wehub-resource-sync
42 lines
667 B
Go
42 lines
667 B
Go
package signals
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import (
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"os"
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"os/signal"
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"sync"
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"syscall"
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)
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var (
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signalHandlers []func()
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signalHandlersMutex sync.Mutex
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)
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var setupSignalHandler = sync.OnceFunc(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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go signalHandler(c)
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})
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func RegisterGracefulTerminationHandler(fn func()) {
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signalHandlersMutex.Lock()
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defer signalHandlersMutex.Unlock()
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signalHandlers = append(signalHandlers, fn)
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}
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func init() {
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setupSignalHandler()
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}
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func signalHandler(c chan os.Signal) {
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<-c
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signalHandlersMutex.Lock()
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defer signalHandlersMutex.Unlock()
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for _, fn := range signalHandlers {
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fn()
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}
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os.Exit(0)
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}
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