org.graylog2.inputs.gelf.http.GELFHttpPipelineFactory Maven / Gradle / Ivy

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Graylog message inputs
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/**
 * This file is part of Graylog2.
 *
 * Graylog2 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.
 *
 * Graylog2 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 Graylog2.  If not, see .
 */
package org.graylog2.inputs.gelf.http;

import com.codahale.metrics.MetricRegistry;
import org.graylog2.inputs.gelf.gelf.GELFProcessor;
import org.graylog2.inputs.network.PacketInformationDumper;
import org.graylog2.plugin.buffers.Buffer;
import org.graylog2.plugin.inputs.MessageInput;
import org.graylog2.plugin.inputs.util.ConnectionCounter;
import org.graylog2.plugin.inputs.util.ThroughputCounter;
import org.jboss.netty.channel.ChannelPipeline;
import org.jboss.netty.channel.ChannelPipelineFactory;
import org.jboss.netty.channel.Channels;
import org.jboss.netty.handler.codec.http.HttpContentDecompressor;
import org.jboss.netty.handler.codec.http.HttpRequestDecoder;
import org.jboss.netty.handler.codec.http.HttpResponseEncoder;

public class GELFHttpPipelineFactory implements ChannelPipelineFactory {

    private final MetricRegistry metricRegistry;
    private final Buffer processBuffer;
    private final MessageInput sourceInput;
    private final ThroughputCounter throughputCounter;
    private final ConnectionCounter connectionCounter;

    public GELFHttpPipelineFactory(MetricRegistry metricRegistry,
                                   Buffer processBuffer,
                                   MessageInput sourceInput,
                                   ThroughputCounter throughputCounter,
                                   ConnectionCounter connectionCounter) {
        this.metricRegistry = metricRegistry;
        this.processBuffer = processBuffer;
        this.sourceInput = sourceInput;
        this.throughputCounter = throughputCounter;
        this.connectionCounter = connectionCounter;
    }

    @Override
    public ChannelPipeline getPipeline() throws Exception {
        final ChannelPipeline pipeline = Channels.pipeline();

        pipeline.addLast("packet-meta-dumper", new PacketInformationDumper(sourceInput));
        pipeline.addLast("connection-counter", connectionCounter);
        pipeline.addLast("traffic-counter", throughputCounter);
        pipeline.addLast("decoder", new HttpRequestDecoder());
        pipeline.addLast("encoder", new HttpResponseEncoder());

        // only add support for incoming compressed messages, we don't return much (if any) data to the client.
        pipeline.addLast("decompressor", new HttpContentDecompressor());

        pipeline.addLast("handler", new GELFHttpHandler(metricRegistry,
                sourceInput,
                new GELFProcessor(metricRegistry, processBuffer),
                sourceInput.getConfiguration().getBoolean("enable_cors"))
        );

        return pipeline;
    }
}