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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.http;
import org.apache.http.HttpHost;
import org.apache.http.config.ConnectionConfig;
import org.apache.http.impl.nio.pool.BasicNIOConnPool;
import org.apache.http.nio.NHttpClientConnection;
import org.apache.http.nio.reactor.ConnectingIOReactor;
import org.apache.http.pool.PoolEntry;
import org.apache.http.pool.PoolEntryCallback;
import java.util.concurrent.TimeUnit;
/**
* Extended Pool that allows for explicit removal of {@link HttpHost}s.
*/
public class ViewPool extends BasicNIOConnPool {
/**
* Create a new {@link ViewPool}.
*
* @param reactor the reactor to use for connections.
* @param config the configuration to apply.
*/
public ViewPool(final ConnectingIOReactor reactor,
final ConnectionConfig config) {
super(reactor, config);
}
/**
* Closes the underlying connections for the given {@link HttpHost}.
*
* Since on a rebalance out, all connections to this view node need to
* be closed, regardless if they are currently available or leased.
*
* @param host the host to shutdown connections for.
*/
public void closeConnectionsForHost(final HttpHost host) {
// In-flight operations will be cancelled and retried in other parts of
// the codebase.
enumAvailable(new PoolEntryCallback() {
@Override
public void process(PoolEntry entry) {
if (entry.getRoute().equals(host)) {
entry.updateExpiry(0, TimeUnit.MILLISECONDS);
}
}
});
enumLeased(new PoolEntryCallback() {
@Override
public void process(PoolEntry entry) {
if (entry.getRoute().equals(host)) {
entry.updateExpiry(0, TimeUnit.MILLISECONDS);
}
}
});
closeExpired();
}
}
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