/*
* 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.nutch.indexer;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.mapred.FileOutputFormat;
import org.apache.hadoop.mapred.JobClient;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.util.StringUtils;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.apache.nutch.util.HadoopFSUtil;
import org.apache.nutch.util.NutchConfiguration;
import org.apache.nutch.util.NutchJob;
import org.apache.nutch.util.TimingUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Generic indexer which relies on the plugins implementing IndexWriter
**/
public class IndexingJob extends Configured implements Tool {
public static Logger LOG = LoggerFactory.getLogger(IndexingJob.class);
public IndexingJob() {
super(null);
}
public IndexingJob(Configuration conf) {
super(conf);
}
public void index(Path crawlDb, Path linkDb, List<Path> segments,
boolean noCommit) throws IOException {
index(crawlDb, linkDb, segments, noCommit, false, null);
}
public void index(Path crawlDb, Path linkDb, List<Path> segments,
boolean noCommit, boolean deleteGone) throws IOException {
index(crawlDb, linkDb, segments, noCommit, deleteGone, null);
}
public void index(Path crawlDb, Path linkDb, List<Path> segments,
boolean noCommit, boolean deleteGone, String params)
throws IOException {
index(crawlDb, linkDb, segments, noCommit, deleteGone, params, false,
false);
}
public void index(Path crawlDb, Path linkDb, List<Path> segments,
boolean noCommit, boolean deleteGone, String params,
boolean filter, boolean normalize) throws IOException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
long start = System.currentTimeMillis();
LOG.info("Indexer: starting at " + sdf.format(start));
final JobConf job = new NutchJob(getConf());
job.setJobName("Indexer");
LOG.info("Indexer: deleting gone documents: " + deleteGone);
LOG.info("Indexer: URL filtering: " + filter);
LOG.info("Indexer: URL normalizing: " + normalize);
IndexWriters writers = new IndexWriters(getConf());
LOG.info(writers.describe());
IndexerMapReduce.initMRJob(crawlDb, linkDb, segments, job);
// NOW PASSED ON THE COMMAND LINE AS A HADOOP PARAM
// job.set(SolrConstants.SERVER_URL, solrUrl);
job.setBoolean(IndexerMapReduce.INDEXER_DELETE, deleteGone);
job.setBoolean(IndexerMapReduce.URL_FILTERING, filter);
job.setBoolean(IndexerMapReduce.URL_NORMALIZING, normalize);
if (params != null) {
job.set(IndexerMapReduce.INDEXER_PARAMS, params);
}
job.setReduceSpeculativeExecution(false);
final Path tmp = new Path("tmp_" + System.currentTimeMillis() + "-"
+ new Random().nextInt());
FileOutputFormat.setOutputPath(job, tmp);
try {
JobClient.runJob(job);
// do the commits once and for all the reducers in one go
if (!noCommit) {
writers.open(job,"commit");
writers.commit();
}
long end = System.currentTimeMillis();
LOG.info("Indexer: finished at " + sdf.format(end) + ", elapsed: "
+ TimingUtil.elapsedTime(start, end));
} finally {
FileSystem.get(job).delete(tmp, true);
}
}
public int run(String[] args) throws Exception {
if (args.length < 2) {
System.err
.println("Usage: Indexer <crawldb> [-linkdb <linkdb>] [-params k1=v1&k2=v2...] (<segment> ... | -dir <segments>) [-noCommit] [-deleteGone] [-filter] [-normalize]");
IndexWriters writers = new IndexWriters(getConf());
System.err.println(writers.describe());
return -1;
}
final Path crawlDb = new Path(args[0]);
Path linkDb = null;
final List<Path> segments = new ArrayList<Path>();
String params = null;
boolean noCommit = false;
boolean deleteGone = false;
boolean filter = false;
boolean normalize = false;
for (int i = 1; i < args.length; i++) {
if (args[i].equals("-linkdb")) {
linkDb = new Path(args[++i]);
} else if (args[i].equals("-dir")) {
Path dir = new Path(args[++i]);
FileSystem fs = dir.getFileSystem(getConf());
FileStatus[] fstats = fs.listStatus(dir,
HadoopFSUtil.getPassDirectoriesFilter(fs));
Path[] files = HadoopFSUtil.getPaths(fstats);
for (Path p : files) {
segments.add(p);
}
} else if (args[i].equals("-noCommit")) {
noCommit = true;
} else if (args[i].equals("-deleteGone")) {
deleteGone = true;
} else if (args[i].equals("-filter")) {
filter = true;
} else if (args[i].equals("-normalize")) {
normalize = true;
} else if (args[i].equals("-params")) {
params = args[++i];
} else {
segments.add(new Path(args[i]));
}
}
try {
index(crawlDb, linkDb, segments, noCommit, deleteGone, params,
filter, normalize);
return 0;
} catch (final Exception e) {
LOG.error("Indexer: " + StringUtils.stringifyException(e));
return -1;
}
}
public static void main(String[] args) throws Exception {
final int res = ToolRunner.run(NutchConfiguration.create(),
new IndexingJob(), args);
System.exit(res);
}
}