331fd0d986
because it causes a runtime panic if a binary which has its own implementation of "-version" flag tries to reuse a package library which indirectly depend on "pkg/version". e.g. If such an user-defined binary tires to link "pkg/api" or "pkg/client", the binary fails with a runtime panic "flag redefined: version".
40 lines
1.1 KiB
Go
40 lines
1.1 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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// Package flag defines utility functions to handle command line flags related to version of Kubernetes.
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package flag
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import (
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"flag"
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"fmt"
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"os"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/version"
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)
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var (
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versionFlag = flag.Bool("version", false, "Print version information and quit")
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)
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// PrintAndExitIfRequested will check if the -version flag was passed
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// and, if so, print the version and exit.
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func PrintAndExitIfRequested() {
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if *versionFlag {
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fmt.Printf("Kubernetes %s\n", version.Get())
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os.Exit(0)
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}
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}
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