package com.ontology2.bakemono.diffFacts;
import com.google.common.base.Joiner;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import com.hp.hpl.jena.ontology.OntTools;
import com.ontology2.bakemono.configuration.HadoopTool;
import com.ontology2.bakemono.joins.*;
import com.ontology2.centipede.parser.OptionParser;
import com.ontology2.centipede.errors.UsageException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.VIntWritable;
import org.apache.hadoop.io.compress.GzipCodec;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
import org.apache.hadoop.util.Tool;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
@HadoopTool("rdfDiff")
public class DiffFactsTool implements Tool {
@Autowired ApplicationContext applicationContext;
private Configuration conf;
@Override
public Configuration getConf() {
return this.conf;
}
@Override
public void setConf(Configuration arg0) {
this.conf=arg0;
}
@Override
public int run(String[] strings) throws Exception {
OptionParser parser=new OptionParser(DiffFactsOptions.class);
applicationContext.getAutowireCapableBeanFactory().autowireBean(parser);
DiffFactsOptions o= (DiffFactsOptions) parser.parse(Lists.newArrayList(strings));
if (o.left.isEmpty())
throw new UsageException("you did not specify a value for -left");
if (o.right.isEmpty())
throw new UsageException("you did not specify a value for -right");
if (o.output.isEmpty())
throw new UsageException("you did not specify a value for -output");
conf.set("mapred.compress.map.output", "true");
conf.set("mapred.output.compression.type", "BLOCK");
conf.set("mapred.map.output.compression.codec", "org.apache.hadoop.io.compress.GzipCodec");
conf.set(SetJoinMapper.INPUTS+".1", Joiner.on(",").join(o.left));
conf.set(SetJoinMapper.INPUTS+".2", Joiner.on(",").join(o.right));
Job job=new Job(conf,"diffFacts");
job.setJarByClass(this.getClass());
job.setMapperClass(TextSimpleJoinMapper.class);
job.setReducerClass(DiffFactReducer.class);
job.setGroupingComparatorClass(TaggedTextKeyGroupComparator.class);
job.setPartitionerClass(TaggedKeyPartitioner.class);
if(o.reducerCount<1) {
o.reducerCount=1;
}
job.setNumReduceTasks(o.reducerCount);
job.setMapOutputKeyClass(TaggedTextItem.class);
job.setMapOutputValueClass(VIntWritable.class);
job.setOutputKeyClass(Text.class);
job.setOutputValueClass(Text.class);
for(String path: Iterables.concat(o.left, o.right)) {
FileInputFormat.addInputPath(job, new Path(path));
}
FileOutputFormat.setOutputPath(job, new Path(o.output));
FileOutputFormat.setCompressOutput(job, true);
FileOutputFormat.setOutputCompressorClass(job, GzipCodec.class);
job.setOutputFormatClass(TextOutputFormat.class);
return job.waitForCompletion(true) ? 0 : 1;
}
}