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The official Couchbase Java SDK
/**
* Copyright (C) 2009-2013 Couchbase, 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 DEALING
* IN THE SOFTWARE.
*/
package com.couchbase.client.internal;
import com.couchbase.client.CouchbaseConnection;
import java.lang.reflect.Constructor;
import java.net.InetSocketAddress;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import net.spy.memcached.OperationFactory;
/**
* The ThrottleManager handles Throttle instances which are bound to their
* corresponding MemcachedNodes. It also handles automatic rebalance cleanup
* and therefore acts as the managing frontend of the Throttle instances
* which handle the actual throttling.
*/
public class ThrottleManager {
private static final Logger LOGGER = Logger.getLogger(
ThrottleManager.class.getName());
private final Map throttles;
private final Class throttler;
private final CouchbaseConnection conn;
private final OperationFactory opFact;
public ThrottleManager(List initialNodes,
Class throttler, CouchbaseConnection conn, OperationFactory opFact) {
this.throttler = throttler;
this.throttles = new HashMap();
this.conn = conn;
this.opFact = opFact;
for(InetSocketAddress node : initialNodes) {
setThrottler(node);
}
}
public final ThrottleManager setThrottler(InetSocketAddress node) {
LOGGER.log(Level.INFO, "Adding Throttler for {0}", node.toString());
try {
Constructor constructor = throttler.getConstructor(
this.conn.getClass(), opFact.getClass(), node.getClass());
throttles.put(node, constructor.newInstance(this.conn, opFact, node));
} catch(Exception e) {
throw new RuntimeException("Could not add Throttler for "
+ node.toString());
}
return this;
}
public T getThrottler(InetSocketAddress node) {
return throttles.get(node);
}
public void removeThrottler(InetSocketAddress node) {
LOGGER.log(Level.INFO, "Removing Throttler for {0}", node.toString());
throttles.remove(node);
}
}
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