io.covert.dns.collection.CollectionJob.java Source code

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Here is the source code for io.covert.dns.collection.CollectionJob.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 io.covert.dns.collection;

import java.util.Arrays;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.BytesWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Counter;
import org.apache.hadoop.mapreduce.CounterGroup;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.output.SequenceFileOutputFormat;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.mortbay.log.Log;

public class CollectionJob extends Configured implements Tool {

    private static void usage(String msg) {
        System.err.println("Usage: hadoop jar JARFILE.jar " + CollectionJob.class.getName()
                + " <requestClass> <requestTypes> <inDir> <outDir>");
        System.err.println("    requestClass - request class, e.g. IN, CH, etc");
        System.err.println("    requestTypes - resource record types (comma delim), e.g. A,MX,NS etc");
        System.err.println("    inDir  - HDFS input dir");
        System.err.println("    outDir - HDFS output dir");
        System.exit(-1);
    }

    @Override
    public int run(String[] args) throws Exception {

        if (args.length != 4) {
            usage("");
        }

        String dclass = args[0];
        String types = args[1];
        String inDir = args[2];
        String outDir = args[3];

        Configuration conf = getConf();

        if (conf.get("dns.collection.num.resolvers") == null)
            conf.setInt("dns.collection.num.resolvers", 50);
        if (conf.get("dns.collection.nameservers") == null)
            conf.set("dns.collection.nameservers", "127.0.0.1");

        Job job = new Job(conf);
        job.setJobName(CollectionJob.class.getSimpleName() + ": types=" + types + ", dclass=" + dclass + " inDir="
                + inDir + ", outDir=" + outDir + ", resolvers=" + conf.get("dns.collection.nameservers"));
        job.setJarByClass(getClass());

        job.setMapperClass(CollectionMapper.class);
        job.setNumReduceTasks(0);

        job.setMapOutputKeyClass(Text.class);
        job.setMapOutputValueClass(Text.class);
        job.setOutputKeyClass(Text.class);
        job.setOutputValueClass(BytesWritable.class);

        job.setInputFormatClass(DnsRequestInputFormat.class);
        DnsRequestInputFormat.setInputPaths(job, new Path(inDir));
        DnsRequestInputFormat.configure(job, dclass.toUpperCase(), Arrays.asList(types.split(",")),
                Arrays.asList(""));

        job.setOutputFormatClass(SequenceFileOutputFormat.class);
        SequenceFileOutputFormat.setOutputPath(job, new Path(outDir));
        SequenceFileOutputFormat.setCompressOutput(job, true);
        job.submit();

        int retVal = job.waitForCompletion(true) ? 0 : 1;

        CounterGroup counters = job.getCounters().getGroup(CollectionMapper.RESOLVER_GROUP);
        Counter constructMessageMS = counters.findCounter(CollectionMapper.CONSTRUCT_MESSAGE_MS);
        Counter parseResponseMS = counters.findCounter(CollectionMapper.PARSE_RESPONSE_MS);
        Counter performRequestMS = counters.findCounter(CollectionMapper.PERFORM_REQUEST_MS);
        Counter totalRequestHandlingMS = counters.findCounter(CollectionMapper.TOTAL_REQUEST_HANDLING_MS);

        Log.info("Total ConstructMessage percent: "
                + (double) (constructMessageMS.getValue() * 100L) / ((double) totalRequestHandlingMS.getValue()));
        Log.info("Total ParseResponse percent:    "
                + (double) (parseResponseMS.getValue() * 100L) / ((double) totalRequestHandlingMS.getValue()));
        Log.info("Total PerformRequest percent:   "
                + (double) (performRequestMS.getValue() * 100L) / ((double) totalRequestHandlingMS.getValue()));

        return retVal;
    }

    public static void main(String[] args) throws Exception {
        ToolRunner.run(new CollectionJob(), args);
    }
}