1 files changed, 69 insertions, 0 deletions
diff --git a/vendor/k8s.io/klog/v2/exit.go b/vendor/k8s.io/klog/v2/exit.go
new file mode 100644
index 0000000000..320a147728
--- /dev/null
+++ b/vendor/k8s.io/klog/v2/exit.go
@@ -0,0 +1,69 @@
+// Go support for leveled logs, analogous to https://code.google.com/p/google-glog/
+//
+// Copyright 2013 Google Inc. All Rights Reserved.
+// Copyright 2022 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 klog
+
+import (
+	"fmt"
+	"os"
+	"time"
+)
+
+var (
+
+	// ExitFlushTimeout is the timeout that klog has traditionally used during
+	// calls like Fatal or Exit when flushing log data right before exiting.
+	// Applications that replace those calls and do not have some specific
+	// requirements like "exit immediately" can use this value as parameter
+	// for FlushAndExit.
+	//
+	// Can be set for testing purpose or to change the application's
+	// default.
+	ExitFlushTimeout = 10 * time.Second
+
+	// OsExit is the function called by FlushAndExit to terminate the program.
+	//
+	// Can be set for testing purpose or to change the application's
+	// default behavior. Note that the function should not simply return
+	// because callers of functions like Fatal will not expect that.
+	OsExit = os.Exit
+)
+
+// FlushAndExit flushes log data for a certain amount of time and then calls
+// os.Exit. Combined with some logging call it provides a replacement for
+// traditional calls like Fatal or Exit.
+func FlushAndExit(flushTimeout time.Duration, exitCode int) {
+	timeoutFlush(flushTimeout)
+	OsExit(exitCode)
+}
+
+// timeoutFlush calls Flush and returns when it completes or after timeout
+// elapses, whichever happens first.  This is needed because the hooks invoked
+// by Flush may deadlock when klog.Fatal is called from a hook that holds
+// a lock. Flushing also might take too long.
+func timeoutFlush(timeout time.Duration) {
+	done := make(chan bool, 1)
+	go func() {
+		Flush() // calls logging.lockAndFlushAll()
+		done <- true
+	}()
+	select {
+	case <-done:
+	case <-time.After(timeout):
+		fmt.Fprintln(os.Stderr, "klog: Flush took longer than", timeout)
+	}
+}