com.asakusafw.runtime.util.lock

Class LocalFileLockProvider<T>

java.lang.Object

com.asakusafw.runtime.util.lock.LocalFileLockProvider<T>

Type Parameters:

T - the lock target type

All Implemented Interfaces:

LockProvider<T>

public class LocalFileLockProvider<T>
extends Object
implements LockProvider<T>

An implementation of LockProvider using local file lock.

Since:

0.7.0

Constructor Summary

Constructors

Constructor and Description
LocalFileLockProvider(File baseDirectory) Creates a new instance.

Method Summary

Modifier and Type	Method and Description
LocalFileLockObject<T>	tryLock(T target) Tries to acquire lock for the target.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LocalFileLockProvider

public LocalFileLockProvider(File baseDirectory)

Creates a new instance.

Parameters:

baseDirectory - the local lock file base directory

Method Detail

tryLock

public LocalFileLockObject<T> tryLock(T target)
                               throws IOException

Description copied from interface: LockProvider

Tries to acquire lock for the target.

Specified by:

tryLock in interface LockProvider<T>

Parameters:

target - the lock target

Returns:

the lock object, or null if other program has a lock for the same target

Throws:

IOException - if failed to acquire lock by I/O exception