org.graylog2.plugin.inputs.util.ConnectionCounter Maven / Gradle / Ivy
/**
* This file is part of Graylog.
*
* Graylog is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Graylog. If not, see .
*/
package org.graylog2.plugin.inputs.util;
import com.codahale.metrics.Gauge;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.channel.ChannelStateEvent;
import org.jboss.netty.channel.SimpleChannelHandler;
import java.util.concurrent.atomic.AtomicInteger;
/**
* @author Lennart Koopmann
*/
public class ConnectionCounter extends SimpleChannelHandler {
private final AtomicInteger connections;
private long totalConnections;
public ConnectionCounter() {
connections = new AtomicInteger();
totalConnections = 0;
}
@Override
public void channelConnected(ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception {
connections.incrementAndGet();
totalConnections++;
super.channelConnected(ctx, e);
}
@Override
public void channelDisconnected(ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception {
connections.decrementAndGet();
super.channelDisconnected(ctx, e);
}
public int getConnectionCount() {
return connections.get();
}
public long getTotalConnections() {
return totalConnections;
}
public Gauge gaugeCurrent() {
return new Gauge() {
@Override
public Integer getValue() {
return getConnectionCount();
}
};
}
public Gauge gaugeTotal() {
return new Gauge() {
@Override
public Long getValue() {
return getTotalConnections();
}
};
}
}