org.apache.giraph.comm.netty.InboundByteCounter.java Source code

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Here is the source code for org.apache.giraph.comm.netty.InboundByteCounter.java

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/*
 * 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.
 */

package org.apache.giraph.comm.netty;

import org.apache.giraph.metrics.GiraphMetrics;
import org.apache.giraph.metrics.ResetSuperstepMetricsObserver;
import org.apache.giraph.metrics.SuperstepMetricsRegistry;
import org.apache.log4j.Logger;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.channel.ChannelHandler.Sharable;

/**
 * Keep track of the bytes received and provide some metrics when
 * desired as part of the Netty Channel stack.
 */
@Sharable
public class InboundByteCounter extends ChannelInboundHandlerAdapter
        implements ByteCounter, ResetSuperstepMetricsObserver {
    /** Class logger */
    private static final Logger LOG = Logger.getLogger(InboundByteCounter.class);
    /** ByteCounter delegate object */
    private final ByteCounterDelegate delegate = new ByteCounterDelegate(true);

    /** Constructor */
    public InboundByteCounter() {
        // Initialize Metrics
        GiraphMetrics.get().addSuperstepResetObserver(this);
    }

    public long getBytesReceived() {
        return delegate.getBytesProcessed();
    }

    /**
     * @return Mbytes received / sec in the current interval
     */
    public double getMbytesPerSecReceived() {
        return delegate.getMbytesPerSecProcessed();
    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        if (msg instanceof ByteBuf) {
            ByteBuf buf = (ByteBuf) msg;
            int receivedBytes = delegate.byteBookkeeper(buf);
            if (LOG.isDebugEnabled()) {
                LOG.debug("channelRead: " + ctx.channel().toString() + " buffer " + "size = " + receivedBytes
                        + ", total bytes = " + getBytesReceived());
            }
        }
        ctx.fireChannelRead(msg);
    }

    @Override
    public void newSuperstep(SuperstepMetricsRegistry superstepMetrics) {
        delegate.newSuperstep(superstepMetrics);
    }

    @Override
    public void resetAll() {
        delegate.resetAll();
    }

    @Override
    public String getMetrics() {
        return delegate.getMetrics();
    }

    @Override
    public String getMetricsWindow(int minMsecsWindow) {
        return delegate.getMetricsWindow(minMsecsWindow);
    }
}