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lockfile.go
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lockfile.go
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// Copyright (c) 2019 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package main
// This .go file is used to test the lockfile package (m3/src/x/lockfile)
import (
"fmt"
"os"
"path"
"strconv"
"time"
"github.com/m3db/m3/src/x/lockfile"
)
func exitWithUsage() {
fmt.Printf(
"Usage: %[1]s <LOCK_FILE_PATH> <NUM_SECONDS_TO_SLEEP> <SHOULD_CLEANUP_LOCK>\nExample: %[1]s /var/run/lockfile 1 1\n",
path.Base(os.Args[0]))
os.Exit(1)
}
func main() {
if len(os.Args) != 4 {
exitWithUsage()
}
path, sleepStr, rmLock := os.Args[1], os.Args[2], os.Args[3]
sleep, err := strconv.Atoi(sleepStr)
if err != nil {
exitWithUsage()
}
lock, err := lockfile.Acquire(path)
if err != nil {
os.Exit(1)
}
if sleep > 0 {
time.Sleep(time.Duration(sleep) * time.Second)
}
if rmLock != "0" {
lock.Release()
}
}