/**
* 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.mapred.gridmix;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.util.ToolRunner;
import org.apache.hadoop.mapred.gridmix.Gridmix;
import org.apache.hadoop.conf.Configuration;
import java.util.Date;
import java.text.SimpleDateFormat;
import java.io.OutputStream;
/**
* Gridmix utilities.
*/
public class UtilsForGridmix {
private static final Log LOG = LogFactory.getLog(UtilsForGridmix.class);
/**
* cleanup the folder or file.
* @param path - folder or file path.
* @param conf - cluster configuration
* @throws IOException - If an I/O error occurs.
*/
public static void cleanup(Path path, Configuration conf)
throws IOException {
FileSystem fs = path.getFileSystem(conf);
fs.delete(path, true);
fs.close();
}
/**
* Get the login user.
* @return - login user as string..
* @throws IOException - if an I/O error occurs.
*/
public static String getUserName() throws IOException {
return UserGroupInformation.getLoginUser().getUserName();
}
/**
* Get the argument list for gridmix job.
* @param gridmixDir - gridmix parent directory.
* @param gridmixRunMode - gridmix modes either 1,2,3.
* @param values - gridmix runtime values.
* @param otherArgs - gridmix other generic args.
* @return - argument list as string array.
*/
public static String [] getArgsList(Path gridmixDir, int gridmixRunMode,
String [] values, String [] otherArgs) {
String [] runtimeArgs = {
"-D", GridMixConfig.GRIDMIX_LOG_MODE +
"=DEBUG",
"-D", GridMixConfig.GRIDMIX_OUTPUT_DIR +
"=" + new Path(gridmixDir,"gridmix").toString(),
"-D", GridMixConfig.GRIDMIX_JOB_SUBMISSION_QUEUE_IN_TRACE
+ "=true",
"-D", GridMixConfig.GRIDMIX_JOB_TYPE
+ "=" + values[0],
"-D", GridMixConfig.GRIDMIX_USER_RESOLVER +
"=" + values[1],
"-D", GridMixConfig.GRIDMIX_SUBMISSION_POLICY +
"=" + values[2]
};
String [] classArgs;
if ((gridmixRunMode == GridMixRunMode.DATA_GENERATION ||
gridmixRunMode == GridMixRunMode.DATA_GENERATION_AND_RUN_GRIDMIX) &&
values[1].indexOf("RoundRobinUserResolver") > 0) {
classArgs = new String[]{
"-generate", values[3],
"-users", values[4],
new Path(gridmixDir,"input").toString(),
values[5]};
} else if (gridmixRunMode == GridMixRunMode.DATA_GENERATION ||
gridmixRunMode == GridMixRunMode.DATA_GENERATION_AND_RUN_GRIDMIX){
classArgs = new String[]{
"-generate", values[3], new Path(gridmixDir,"input").toString(),
values[4]};
} else if(gridmixRunMode == GridMixRunMode.RUN_GRIDMIX
&& values[1].indexOf("RoundRobinUserResolver") > 0) {
classArgs = new String[]{
"-users", values[3],
new Path(gridmixDir,"input").toString(),
values[4]};
} else {
classArgs = new String[]{
new Path(gridmixDir,"input").toString(),values[3]};
}
String [] args = new String [runtimeArgs.length +
classArgs.length + ((otherArgs != null)?otherArgs.length:0)];
System.arraycopy(runtimeArgs, 0, args, 0, runtimeArgs.length);
if (otherArgs !=null) {
System.arraycopy(otherArgs, 0, args, runtimeArgs.length,
otherArgs.length);
System.arraycopy(classArgs, 0, args, (runtimeArgs.length +
otherArgs.length), classArgs.length);
} else {
System.arraycopy(classArgs, 0, args, runtimeArgs.length,
classArgs.length);
}
return args;
}
/**
* Create a file with specified size in mb.
* @param sizeInMB - file size in mb.
* @param inputDir - input directory.
* @param conf - cluster configuration.
* @throws Exception - if an exception occurs.
*/
public static void createFile(int sizeInMB, Path inputDir,
Configuration conf) throws Exception {
Date d = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("ddMMyy_HHmmssS");
String formatDate = sdf.format(d);
FileSystem fs = inputDir.getFileSystem(conf);
OutputStream out = fs.create(new Path(inputDir,"datafile_" + formatDate));
final byte[] b = new byte[1024 * 1024];
for (int index = 0; index < sizeInMB; index++) {
out.write(b);
}
out.close();
fs.close();
}
/**
* Create directories for a path.
* @param path - directories path.
* @param conf - cluster configuration.
* @throws IOException - if an I/O error occurs.
*/
public static void createDirs(Path path,Configuration conf)
throws IOException {
FileSystem fs = path.getFileSystem(conf);
if (!fs.exists(path)) {
fs.mkdirs(path);
}
}
/**
* Run the Gridmix job with given runtime arguments.
* @param gridmixDir - Gridmix parent directory.
* @param conf - cluster configuration.
* @param gridmixRunMode - gridmix run mode either 1,2,3
* @param runtimeValues -gridmix runtime values.
* @return - gridmix status either 0 or 1.
* @throws Exception
*/
public static int runGridmixJob(Path gridmixDir, Configuration conf,
int gridmixRunMode, String [] runtimeValues) throws Exception {
return runGridmixJob(gridmixDir, conf, gridmixRunMode, runtimeValues, null);
}
/**
* Run the Gridmix job with given runtime arguments.
* @param gridmixDir - Gridmix parent directory
* @param conf - cluster configuration.
* @param gridmixRunMode - gridmix run mode.
* @param runtimeValues - gridmix runtime values.
* @param otherArgs - gridmix other generic args.
* @return - gridmix status either 0 or 1.
* @throws Exception
*/
public static int runGridmixJob(Path gridmixDir, Configuration conf,
int gridmixRunMode, String [] runtimeValues,
String [] otherArgs) throws Exception {
Path outputDir = new Path(gridmixDir, "gridmix");
Path inputDir = new Path(gridmixDir, "input");
LOG.info("Cleanup the data if data already exists.");
switch (gridmixRunMode) {
case GridMixRunMode.DATA_GENERATION :
cleanup(inputDir, conf);
cleanup(outputDir, conf);
break;
case GridMixRunMode.DATA_GENERATION_AND_RUN_GRIDMIX :
cleanup(inputDir, conf);
cleanup(outputDir, conf);
break;
case GridMixRunMode.RUN_GRIDMIX :
cleanup(outputDir, conf);
break;
}
final String [] args = UtilsForGridmix.getArgsList(gridmixDir,
gridmixRunMode, runtimeValues, otherArgs);
Gridmix gridmix = new Gridmix();
LOG.info("Submit a Gridmix job in " + runtimeValues[1] +
" mode for " + GridMixRunMode.getMode(gridmixRunMode));
int exitCode = ToolRunner.run(conf, gridmix, args);
return exitCode;
}
}