/*
* 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.hadoop.chukwa.dataloader;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.concurrent.CompletionService;
import java.util.concurrent.ExecutorCompletionService;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.FileUtil;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.util.ToolRunner;
import org.apache.hadoop.chukwa.analysis.salsa.fsm.FSMBuilder;
import org.apache.hadoop.chukwa.conf.ChukwaConfiguration;
import org.apache.hadoop.chukwa.util.ExceptionUtil;
import org.apache.hadoop.conf.Configuration;
public class FSMDataLoader extends DataLoaderFactory {
private static Log log = LogFactory.getLog(FSMDataLoader.class);
protected MetricDataLoader threads[] = null;
private static String DATA_LOADER_THREAD_LIMIT = "chukwa.data.loader.threads.limit";
private int size = 1;
private static CompletionService completion = null;
private static ExecutorService executor = null;
private static String[] mappers = {
"org.apache.hadoop.chukwa.analysis.salsa.fsm.DataNodeClientTraceMapper",
"org.apache.hadoop.chukwa.analysis.salsa.fsm.TaskTrackerClientTraceMapper",
"org.apache.hadoop.chukwa.analysis.salsa.fsm.JobHistoryTaskDataMapper"
};
public FSMDataLoader() {
}
public void load(ChukwaConfiguration conf, FileSystem fs, FileStatus[] fileList) throws IOException {
if(executor==null) {
try {
this.size = Integer.parseInt(conf.get(DATA_LOADER_THREAD_LIMIT));
} catch(Exception e) {
this.size = 1;
}
executor = Executors.newFixedThreadPool(size);
}
if(completion==null) {
completion = new ExecutorCompletionService(executor);
}
try {
// Locate directory output directories of the current demux, and create a unique directory list.
HashSet<Path> inputPaths = new HashSet<Path>();
HashSet<Path> outputPaths = new HashSet<Path>();
int counter = 0;
for(int i=0;i<fileList.length;i++) {
Path temp = fileList[i].getPath().getParent();
if(!inputPaths.contains(temp)) {
inputPaths.add(temp);
}
}
String outputDir= conf.get("chukwa.tmp.data.dir")+File.separator+"fsm_"+System.currentTimeMillis()+"_";
if(inputPaths.size()>0) {
Configuration fsmConf = new Configuration();
// Run fsm map reduce job for dn, tt, and jobhist.
for(String mapper : mappers) {
String[] args = new String[inputPaths.size()+3];
args[0]="-in";
int k=2;
boolean hasData=false;
for(Path temp : inputPaths) {
String tempPath = temp.toUri().toString();
if((mapper.intern()==mappers[0].intern() && tempPath.indexOf("ClientTraceDetailed")>0) ||
(mapper.intern()==mappers[1].intern() && tempPath.indexOf("ClientTraceDetailed")>0) ||
(mapper.intern()==mappers[2].intern() && tempPath.indexOf("TaskData")>0) ||
(mapper.intern()==mappers[2].intern() && tempPath.indexOf("JobData")>0)) {
args[k]=tempPath;
k++;
hasData=true;
}
}
args[1]=k-2+"";
fsmConf.set("chukwa.salsa.fsm.mapclass", mapper);
args[k]=outputDir+mapper;
Path outputPath = new Path(args[k]);
outputPaths.add(outputPath);
if(hasData) {
int res = ToolRunner.run(fsmConf, new FSMBuilder(), args);
}
}
}
// Find the mapreduce output and load to MDL.
for(Path outputPath : outputPaths) {
Path searchDir = new Path(outputPath.toUri().toString()+"/*/*/*.evt");
log.info("Search dir:"+searchDir.toUri().toString());
FileStatus[] outputList = fs.globStatus(searchDir);
if(outputList!=null) {
for(int j=0;j<outputList.length;j++) {
String outputFile = outputList[j].getPath().toUri().toString();
log.info("FSM -> MDL loading: "+outputFile);
completion.submit(new MetricDataLoader(conf, fs, outputFile));
counter++;
}
} else {
log.warn("No output to load.");
}
}
for(int i=0;i<counter;i++) {
completion.take().get();
}
// Clean up mapreduce output of fsm.
for(Path dir : outputPaths) {
fs.delete(dir, true);
}
} catch(Exception e) {
log.error(ExceptionUtil.getStackTrace(e));
throw new IOException();
} finally {
}
}
public void shutdown() throws InterruptedException {
executor.shutdown();
executor.awaitTermination(30, TimeUnit.SECONDS);
executor.shutdownNow();
}
}