// Copyright 2019 The Gitea Authors. All rights reserved.// SPDX-License-Identifier: MIT package graceful import (	"context") // Shutdown procedure:// * cancel ShutdownContext: the registered context consumers have time to do their cleanup (they could use the hammer context)// * cancel HammerContext: the all context consumers have limited time to do their cleanup (wait for a few seconds)// * cancel TerminateContext: the registered context consumers have time to do their cleanup (but they shouldn't use shutdown/hammer context anymore)// * cancel manager context// If the shutdown is triggered again during the shutdown procedure, the hammer context will be canceled immediately to force to shut down. // ShutdownContext returns a context.Context that is Done at shutdown// Callers using this context should ensure that they are registered as a running server// in order that they are waited for.func (g *Manager) ShutdownContext() context.Context {	return g.shutdownCtx} // HammerContext returns a context.Context that is Done at hammer// Callers using this context should ensure that they are registered as a running server// in order that they are waited for.func (g *Manager) HammerContext() context.Context {	return g.hammerCtx} // TerminateContext returns a context.Context that is Done at terminate// Callers using this context should ensure that they are registered as a terminating server// in order that they are waited for.func (g *Manager) TerminateContext() context.Context {	return g.terminateCtx}