package org.apache.blur.server;
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
import static org.apache.blur.metrics.MetricsConstants.BLUR;
import static org.apache.blur.metrics.MetricsConstants.ORG_APACHE_BLUR;
import java.net.Socket;
import java.net.SocketAddress;
import java.nio.channels.SelectionKey;
import java.nio.channels.SocketChannel;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.blur.log.Log;
import org.apache.blur.log.LogFactory;
import org.apache.blur.thirdparty.thrift_0_9_0.protocol.TProtocol;
import org.apache.blur.thirdparty.thrift_0_9_0.server.ServerContext;
import org.apache.blur.thirdparty.thrift_0_9_0.server.TServerEventHandler;
import org.apache.blur.thirdparty.thrift_0_9_0.transport.TTransport;
import com.yammer.metrics.Metrics;
import com.yammer.metrics.core.Gauge;
import com.yammer.metrics.core.Meter;
import com.yammer.metrics.core.MetricName;
/**
* {@link ConrtollerServerContext} is the session manager for the controller servers.
*/
public class ControllerServerEventHandler implements TServerEventHandler {
private static final Log LOG = LogFactory.getLog(ControllerServerEventHandler.class);
private final Meter _connectionMeter;
private final AtomicLong _connections = new AtomicLong();
public ControllerServerEventHandler() {
Metrics.newGauge(new MetricName(ORG_APACHE_BLUR, BLUR, "Connections"), new Gauge<Long>() {
@Override
public Long value() {
return null;
}
});
_connectionMeter = Metrics.newMeter(new MetricName(ORG_APACHE_BLUR, BLUR, "Connections/s"), "Connections/s",
TimeUnit.SECONDS);
}
@Override
public void preServe() {
LOG.debug("preServe");
}
@Override
public ServerContext createContext(TProtocol input, TProtocol output, Object selectionKeyObject) {
LOG.debug("Client connected");
SelectionKey selectionKey = (SelectionKey) selectionKeyObject;
SocketChannel channel = (SocketChannel) selectionKey.channel();
Socket socket = channel.socket();
SocketAddress remoteSocketAddress = socket.getRemoteSocketAddress();
SocketAddress localSocketAddress = socket.getLocalSocketAddress();
_connectionMeter.mark();
_connections.incrementAndGet();
return new ControllerServerContext(localSocketAddress, remoteSocketAddress);
}
@Override
public void deleteContext(ServerContext serverContext, TProtocol input, TProtocol output) {
LOG.debug("Client disconnected");
_connections.decrementAndGet();
}
@Override
public void processContext(ServerContext serverContext, TTransport inputTransport, TTransport outputTransport) {
LOG.debug("Method called");
ControllerServerContext context = (ControllerServerContext) serverContext;
ControllerServerContext.registerContextForCall(context);
}
}