From 0b18d3608f4a6a75f7308761a7afa557ffddef12 Mon Sep 17 00:00:00 2001
From: s-z-z <xiaoxin09@hotmail.com>
Date: Thu, 28 Aug 2025 17:08:39 +0800
Subject: [PATCH] cleanup: replace custom signal handling with Kubernetes
 apiserver.SetupSignalContext as they are identical.

Signed-off-by: s-z-z <xiaoxin09@hotmail.com>
---
 pkg/manager/signals/signal.go         | 26 ++------------------------
 pkg/manager/signals/signal_posix.go   | 27 ---------------------------
 pkg/manager/signals/signal_windows.go | 23 -----------------------
 3 files changed, 2 insertions(+), 74 deletions(-)
 delete mode 100644 pkg/manager/signals/signal_posix.go
 delete mode 100644 pkg/manager/signals/signal_windows.go

diff --git a/pkg/manager/signals/signal.go b/pkg/manager/signals/signal.go
index a79cfb42df..76ef17a8e0 100644
--- a/pkg/manager/signals/signal.go
+++ b/pkg/manager/signals/signal.go
@@ -17,29 +17,7 @@ limitations under the License.
 package signals
 
 import (
-	"context"
-	"os"
-	"os/signal"
+	apiserver "k8s.io/apiserver/pkg/server"
 )
 
-var onlyOneSignalHandler = make(chan struct{})
-
-// SetupSignalHandler registers for SIGTERM and SIGINT. A context is returned
-// which is canceled on one of these signals. If a second signal is caught, the program
-// is terminated with exit code 1.
-func SetupSignalHandler() context.Context {
-	close(onlyOneSignalHandler) // panics when called twice
-
-	ctx, cancel := context.WithCancel(context.Background())
-
-	c := make(chan os.Signal, 2)
-	signal.Notify(c, shutdownSignals...)
-	go func() {
-		<-c
-		cancel()
-		<-c
-		os.Exit(1) // second signal. Exit directly.
-	}()
-
-	return ctx
-}
+var SetupSignalHandler = apiserver.SetupSignalContext
diff --git a/pkg/manager/signals/signal_posix.go b/pkg/manager/signals/signal_posix.go
deleted file mode 100644
index a0f00a7321..0000000000
--- a/pkg/manager/signals/signal_posix.go
+++ /dev/null
@@ -1,27 +0,0 @@
-//go:build !windows
-// +build !windows
-
-/*
-Copyright 2017 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package signals
-
-import (
-	"os"
-	"syscall"
-)
-
-var shutdownSignals = []os.Signal{os.Interrupt, syscall.SIGTERM}
diff --git a/pkg/manager/signals/signal_windows.go b/pkg/manager/signals/signal_windows.go
deleted file mode 100644
index 4907d573fe..0000000000
--- a/pkg/manager/signals/signal_windows.go
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
-Copyright 2017 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package signals
-
-import (
-	"os"
-)
-
-var shutdownSignals = []os.Signal{os.Interrupt}