co.nubetech.hiho.job.ExportToFTPServer.java Source code

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Here is the source code for co.nubetech.hiho.job.ExportToFTPServer.java

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/**
 * Copyright 2010 Nube Technologies
 * 
 * Licensed 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 co.nubetech.hiho.job;

import java.io.IOException;
import java.util.Map.Entry;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;
import org.apache.hadoop.mapreduce.lib.map.TokenCounterMapper;
import org.apache.hadoop.mapreduce.lib.reduce.IntSumReducer;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.apache.log4j.Logger;

import co.nubetech.hiho.common.HIHOConf;
import co.nubetech.hiho.common.HIHOException;
import co.nubetech.hiho.mapreduce.lib.output.FTPTextOutputFormat;

public class ExportToFTPServer extends Configured implements Tool {

    private final static Logger logger = Logger.getLogger(co.nubetech.hiho.job.ExportToFTPServer.class);

    private String inputPath = null;
    private String outputPath = null;

    public void populateConfiguration(String[] args, Configuration conf) {
        for (int i = 0; i < args.length - 1; i++) {
            if ("-inputPath".equals(args[i])) {
                inputPath = args[++i];
            } else if ("-outputPath".equals(args[i])) {
                outputPath = args[++i];
            } else if ("-ftpUserName".equals(args[i])) {
                conf.set(HIHOConf.FTP_USER, args[++i]);
            } else if ("-ftpAddress".equals(args[i])) {
                conf.set(HIHOConf.FTP_ADDRESS, args[++i]);
            } else if ("-ftpPortNumper".equals(args[i])) {
                conf.set(HIHOConf.FTP_PORT, args[++i]);
            } else if ("-ftpPassword".equals(args[i])) {
                conf.set(HIHOConf.FTP_PASSWORD, args[++i]);
            }
        }
    }

    public void checkMandatoryConfs(Configuration conf) throws HIHOException {
        if (inputPath == null) {
            throw new HIHOException("The provided inputPath is empty, please specify inputPath");
        }
        if (outputPath == null) {
            throw new HIHOException("The outputPath is not defined, please specify outputPath");
        }
        if (conf.get(HIHOConf.FTP_USER) == null) {
            throw new HIHOException("The FTP UserName is not defined, please specify FTP UserName");
        }
        if (conf.get(HIHOConf.FTP_ADDRESS) == null) {
            throw new HIHOException("The FTP Address is not defined, please specify FTP Address");
        }
        if (conf.get(HIHOConf.FTP_PORT) == null) {
            throw new HIHOException("The FTP Port Number is not defined, please specify FTP Port Number");
        }
        if (conf.get(HIHOConf.FTP_PASSWORD) == null) {
            throw new HIHOException("The FTP Password is not defined, please specify FTP Password");
        }
    }

    @Override
    public int run(String[] args) throws IOException {
        Configuration conf = getConf();
        populateConfiguration(args, conf);
        try {
            checkMandatoryConfs(conf);
        } catch (HIHOException e1) {
            e1.printStackTrace();
            throw new IOException(e1);
        }

        for (Entry<String, String> entry : conf) {
            logger.debug("key, value " + entry.getKey() + "=" + entry.getValue());
        }
        Job job = new Job(conf);
        job.setMapperClass(TokenCounterMapper.class);
        job.setInputFormatClass(TextInputFormat.class);
        TextInputFormat.addInputPath(job, new Path(inputPath));
        job.setReducerClass(IntSumReducer.class);
        job.setOutputFormatClass(FTPTextOutputFormat.class);
        FTPTextOutputFormat.setOutputPath(job, new Path(outputPath));
        job.setJarByClass(ExportToFTPServer.class);
        job.setMapOutputKeyClass(Text.class);
        job.setMapOutputValueClass(IntWritable.class);
        job.setNumReduceTasks(2);

        int ret = 0;

        try {
            ret = job.waitForCompletion(true) ? 0 : 1;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return ret;

    }

    public static void main(String[] args) throws Exception {
        int res = ToolRunner.run(new Configuration(), new ExportToFTPServer(), args);
        System.exit(res);
    }

}