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*
* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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package org.apache.airavata.gfac.hadoop.provider.utils;
import org.apache.airavata.gfac.core.context.JobExecutionContext;
import org.apache.airavata.gfac.core.context.MessageContext;
import org.apache.commons.io.FileUtils;
import org.apache.hadoop.conf.Configuration;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.Collection;
public class HadoopUtils {
public static Configuration createHadoopConfiguration(
JobExecutionContext jobExecutionContext,
boolean isWhirrBasedDeployment,
File hadoopConfigDir) throws FileNotFoundException {
MessageContext inMessageContext = jobExecutionContext.getInMessageContext();
Configuration hadoopConf = new Configuration();
if(isWhirrBasedDeployment){
hadoopConf.addResource(new FileInputStream(
new File((String)inMessageContext.getParameter("HADOOP_SITE_XML"))));
} else {
readHadoopClusterConfigurationFromDirectory(hadoopConfigDir, hadoopConf);
}
return hadoopConf;
}
private static void readHadoopClusterConfigurationFromDirectory(File localHadoopConfigurationDirectory, Configuration hadoopConf)
throws FileNotFoundException {
Collection hadoopConfigurationFiles =
FileUtils.listFiles(localHadoopConfigurationDirectory, null, false);
for (Object f : hadoopConfigurationFiles) {
hadoopConf.addResource(new FileInputStream((File)f));
}
}
}