org.trustedanalytics.servicebroker.h2oprovisioner.service.externals.H2oDriverExec.java Source code

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Here is the source code for org.trustedanalytics.servicebroker.h2oprovisioner.service.externals.H2oDriverExec.java

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/**
 * Copyright (c) 2015 Intel Corporation
 *
 * Licensed 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.trustedanalytics.servicebroker.h2oprovisioner.service.externals;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.util.Map;

import org.apache.hadoop.conf.Configuration;
import org.trustedanalytics.servicebroker.h2oprovisioner.service.externals.helpers.ExternalProcessExecutor;

public class H2oDriverExec {

    private final String yarnConfDir;

    public H2oDriverExec(String yarnConfDir) {
        this.yarnConfDir = yarnConfDir;
    }

    public void spawnH2oOnYarn(String[] command, Map<String, String> commandEnvVariables, Configuration hadoopConf)
            throws ExternalProcessException, IOException {
        try (FileOutputStream stream = new FileOutputStream(yarnConfDir + "/yarn-site.xml")) {
            hadoopConf.writeXml(new OutputStreamWriter(stream));
        }

        int h2oExitCode = ExternalProcessExecutor.runCommand(command, commandEnvVariables);
        if (h2oExitCode != 0) {
            throw new ExternalProcessException("h2odriver.jar exited with code " + h2oExitCode);
        }
    }
}