org.apache.lucene.store

Class VerifyingLockFactory

java.lang.Object

org.apache.lucene.store.LockFactory

org.apache.lucene.store.VerifyingLockFactory

public final class VerifyingLockFactory
extends LockFactory

A LockFactory that wraps another LockFactory and verifies that each lock obtain/release is "correct" (never results in two processes holding the lock at the same time). It does this by contacting an external server (LockVerifyServer) to assert that at most one process holds the lock at a time. To use this, you should also run LockVerifyServer on the host and port matching what you pass to the constructor.

See Also:

LockVerifyServer, LockStressTest

Constructor Summary

Constructors

Constructor and Description
VerifyingLockFactory(LockFactory lf, InputStream in, OutputStream out)

Method Summary

Methods

Modifier and Type	Method and Description
Lock	makeLock(Directory dir, String lockName) Return a new Lock instance identified by lockName.

Methods inherited from class java.lang.Object

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

Constructor Detail

VerifyingLockFactory

public VerifyingLockFactory(LockFactory lf,
                    InputStream in,
                    OutputStream out)
                     throws IOException

Parameters:

lf - the LockFactory that we are testing

in - the socket's input to LockVerifyServer

out - the socket's output to LockVerifyServer

Throws:

IOException

Method Detail

makeLock

public Lock makeLock(Directory dir,
            String lockName)

Description copied from class: LockFactory

Return a new Lock instance identified by lockName.

Specified by:

makeLock in class LockFactory

lockName - name of the lock to be created.