WikiTimex.java

/*
 * Cloud9: A MapReduce Library for Hadoop
 *
 * 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 de.l3s.content.timex.extracting;

import java.io.IOException;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.GnuParser;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.OptionBuilder;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.NullOutputFormat;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.apache.log4j.Logger;
import org.python.core.PyInstance;
import org.python.util.PythonInterpreter;
import org.wikimedia.wikihadoop.StreamWikiDumpInputFormat;

import de.l3s.content.mapred.WikipediaPageInputFormat;

import edu.umd.cloud9.collection.wikipedia.WikipediaPage;


/**
 * Tool for indexing and temporal extraction of a particular Wikipedia XML dump file. This program keeps
 * track of total number of pages, redirect pages, disambiguation pages, empty pages, actual
 * articles (including stubs), stubs, and non-articles ("File:", "Category:", "Wikipedia:", etc.).
 * This also provides a skeleton for MapReduce programs to process the collection. Specify input
 * path to the Wikipedia XML dump file with the {@code -input} flag.
 *
 */
public class WikiTimex extends Configured implements Tool {
	private static final Logger LOG = Logger.getLogger(WikiTimex.class);
   
	static InterpreterP inp = new InterpreterP();
	private static enum PageTypes {
		TOTAL, REDIRECT, DISAMBIGUATION, EMPTY, ARTICLE, STUB, OTHER
	};
	/**
  private static class TMapper extends Mapper<LongWritable, WikipediaPage, ImmutableBytesWritable, IntWritable> {
    @Override
    public void map(LongWritable key, WikipediaPage p, Context context)
        throws IOException, InterruptedException {
      context.getCounter(PageTypes.TOTAL).increment(1);

      if (p.isRedirect()) {
        context.getCounter(PageTypes.REDIRECT).increment(1);
      } else if (p.isDisambiguation()) {
        context.getCounter(PageTypes.DISAMBIGUATION).increment(1);
      } else if (p.isEmpty()) {
        context.getCounter(PageTypes.EMPTY).increment(1);
      } else if (p.isArticle()) {
        context.getCounter(PageTypes.ARTICLE).increment(1);

        if (p.isStub()) {
          context.getCounter(PageTypes.STUB).increment(1);
        }
      } else {
        context.getCounter(PageTypes.OTHER).increment(1);
      }
    }
  }*/


	private static class TMapper extends Mapper<Text, Text, ImmutableBytesWritable, IntWritable> {

		@Override
		public void map(Text key, Text p, Context context)
		throws IOException, InterruptedException {
			context.getCounter(PageTypes.TOTAL).increment(1);
			
			inp.execfile("revision_differ.py");
			
		}
	}

	private static final String INPUT_OPTION = "input";
	private static final String LANGUAGE_OPTION = "wiki_language";

	@SuppressWarnings("static-access")
	@Override
	public int run(String[] args) throws Exception {
		Options options = new Options();
		options.addOption(OptionBuilder.withArgName("path")
				.hasArg().withDescription("XML dump file").create(INPUT_OPTION));
		options.addOption(OptionBuilder.withArgName("en|sv|de|cs|es|zh|ar|tr").hasArg()
				.withDescription("two-letter language code").create(LANGUAGE_OPTION));

		CommandLine cmdline;
		CommandLineParser parser = new GnuParser();
		try {
			cmdline = parser.parse(options, args);
		} catch (ParseException exp) {
			System.err.println("Error parsing command line: " + exp.getMessage());
			return -1;
		}

		if (!cmdline.hasOption(INPUT_OPTION)) {
			HelpFormatter formatter = new HelpFormatter();
			formatter.printHelp(this.getClass().getName(), options);
			ToolRunner.printGenericCommandUsage(System.out);
			return -1;
		}

		String language = "en"; // Assume 'en' by default.
		if (cmdline.hasOption(LANGUAGE_OPTION)) {
			language = cmdline.getOptionValue(LANGUAGE_OPTION);
			if (language.length() != 2) {
				System.err.println("Error: \"" + language + "\" unknown language!");
				return -1;
			}
		}

		String inputPath = cmdline.getOptionValue(INPUT_OPTION);

		LOG.info("Tool name: " + this.getClass().getName());
		LOG.info(" - XML dump file: " + inputPath);
		LOG.info(" - language: " + language);

		Job job = Job.getInstance(getConf());
		job.setJarByClass(WikiTimex.class);
		job.setJobName(String.format("CountWikipediaPages[%s: %s, %s: %s]", INPUT_OPTION, inputPath,
				LANGUAGE_OPTION, language));

		job.setNumReduceTasks(0);

		FileInputFormat.setInputPaths(job, new Path(inputPath));

		if (language != null) {
			job.getConfiguration().set("wiki.language", language);
		}

		job.setInputFormatClass(WikipediaPageInputFormat.class);
		job.setOutputFormatClass(NullOutputFormat.class);

		job.setMapperClass(TMapper.class);

		job.waitForCompletion(true);

		return 0;
	}

	public WikiTimex() {
	}

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

class InterpreterP  
{  

   PythonInterpreter interpreter = null;  


   public InterpreterP()  
   {  
      PythonInterpreter.initialize(System.getProperties(),  
                                   System.getProperties(), new String[0]);  

      this.interpreter = new PythonInterpreter();  
   }  

   void execfile( final String fileName )  
   {  
      this.interpreter.execfile(fileName);  
   }  

   PyInstance createClass( final String className, final String opts )  
   {  
      return (PyInstance) this.interpreter.eval(className + "(" + opts + ")");  
   }  
}