/*
* Copyright 2009 Martin Grotzke
*
* 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 de.javakaffee.web.msm;
import java.net.SocketAddress;
import java.nio.channels.SocketChannel;
import java.util.List;
import net.spy.memcached.BinaryConnectionFactory;
import net.spy.memcached.DefaultConnectionFactory;
import net.spy.memcached.FailureMode;
import net.spy.memcached.MemcachedNode;
import net.spy.memcached.NodeLocator;
import net.spy.memcached.OperationFactory;
import net.spy.memcached.auth.AuthDescriptor;
import net.spy.memcached.protocol.binary.BinaryMemcachedNodeImpl;
import net.spy.memcached.protocol.binary.BinaryOperationFactory;
import net.spy.memcached.transcoders.SerializingTranscoder;
import net.spy.memcached.transcoders.Transcoder;
/**
* This {@link net.spy.memcached.ConnectionFactory} uses the
* {@link SuffixBasedNodeLocator} as {@link NodeLocator} and overwrites
* methods as {@link BinaryConnectionFactory} does it as well.
*
* @author <a href="mailto:martin.grotzke@javakaffee.de">Martin Grotzke</a>
*/
public final class SuffixLocatorBinaryConnectionFactory extends DefaultConnectionFactory {
private final MemcachedNodesManager _memcachedNodesManager;
private final SessionIdFormat _sessionIdFormat;
private final Statistics _statistics;
private final long _operationTimeout;
private final long _maxReconnectDelay;
private final AuthDescriptor _authDescriptor;
/**
* Creates a new instance passing an auth descriptor.
* @param memcachedNodesManager
* the memcached nodes manager holding list of nodeIds
* @param sessionIdFormat
* the {@link SessionIdFormat}
*/
public SuffixLocatorBinaryConnectionFactory( final MemcachedNodesManager memcachedNodesManager, final SessionIdFormat sessionIdFormat,
final Statistics statistics, final long operationTimeout, final long maxReconnectDelay, final AuthDescriptor authDescriptor) {
_memcachedNodesManager = memcachedNodesManager;
_sessionIdFormat = sessionIdFormat;
_statistics = statistics;
_operationTimeout = operationTimeout;
_maxReconnectDelay = maxReconnectDelay;
_authDescriptor = authDescriptor;
}
/**
* Creates a new instance.
* @param memcachedNodesManager
* the memcached nodes manager holding list of nodeIds
* @param sessionIdFormat
* the {@link SessionIdFormat}
*/
public SuffixLocatorBinaryConnectionFactory( final MemcachedNodesManager memcachedNodesManager, final SessionIdFormat sessionIdFormat,
final Statistics statistics, final long operationTimeout, final long maxReconnectDelay ) {
this(memcachedNodesManager, sessionIdFormat, statistics, operationTimeout, maxReconnectDelay, null);
}
/**
* We don't want to try another memcached node and we also don't want to wait
* until the failed node becomes available again.
*/
@Override
public FailureMode getFailureMode() {
return FailureMode.Cancel;
}
/**
* {@inheritDoc}
*/
@Override
public NodeLocator createLocator( final List<MemcachedNode> nodes ) {
return new SuffixBasedNodeLocator( nodes, _memcachedNodesManager, _sessionIdFormat );
}
/**
* {@inheritDoc}
*/
@Override
public Transcoder<Object> getDefaultTranscoder() {
final SerializingTranscoder transcoder = new SerializingTranscoder();
transcoder.setCompressionThreshold( SerializingTranscoder.DEFAULT_COMPRESSION_THRESHOLD );
return new TranscoderWrapperStatisticsSupport( _statistics, transcoder );
}
@Override
/**
* TODO = Should defaultOperationTimeout be set from the session Timeout.
*/
public MemcachedNode createMemcachedNode(final SocketAddress sa,
final SocketChannel c, final int bufSize) {
final boolean doAuth = _authDescriptor != null;
final long defaultOpTimeout = getOperationTimeout();
return new BinaryMemcachedNodeImpl(sa, c, bufSize,
createReadOperationQueue(),
createWriteOperationQueue(),
createOperationQueue(),
getOpQueueMaxBlockTime(),
doAuth, defaultOpTimeout,
getAuthWaitTime(), this);
}
@Override
public OperationFactory getOperationFactory() {
return new BinaryOperationFactory();
}
@Override
public long getOperationTimeout() {
return _operationTimeout;
}
@Override
public long getMaxReconnectDelay() {
return _maxReconnectDelay;
}
@Override
public AuthDescriptor getAuthDescriptor() {
return _authDescriptor;
}
}