org.apache.hive.service.server.ServerOptionsProcessor.java Source code

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Here is the source code for org.apache.hive.service.server.ServerOptionsProcessor.java

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/**
 * 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.hive.service.server;

import java.util.Properties;

import org.apache.commons.cli.GnuParser;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.OptionBuilder;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * ServerOptionsProcessor.
 * Process arguments given to servers (-hiveconf property=value)
 * Set properties in System properties
 */
public class ServerOptionsProcessor {
    protected static final Log LOG = LogFactory.getLog(ServerOptionsProcessor.class.getName());
    private final Options options = new Options();
    private org.apache.commons.cli.CommandLine commandLine;
    private final String serverName;

    @SuppressWarnings("static-access")
    public ServerOptionsProcessor(String serverName) {
        this.serverName = serverName;
        // -hiveconf x=y
        options.addOption(OptionBuilder.withValueSeparator().hasArgs(2).withArgName("property=value")
                .withLongOpt("hiveconf").withDescription("Use value for given property").create());

        options.addOption(new Option("H", "help", false, "Print help information"));

    }

    public boolean process(String[] argv) {
        try {
            commandLine = new GnuParser().parse(options, argv);
            if (commandLine.hasOption('H')) {
                printUsage();
                return false;
            }
            //get hiveconf param values and set the System property values
            Properties confProps = commandLine.getOptionProperties("hiveconf");
            for (String propKey : confProps.stringPropertyNames()) {
                LOG.debug("Setting " + propKey + "=" + confProps.getProperty(propKey) + ";");
                System.setProperty(propKey, confProps.getProperty(propKey));
            }
        } catch (ParseException e) {
            System.err.println(e.getMessage());
            printUsage();
            return false;
        }
        return true;
    }

    private void printUsage() {
        new HelpFormatter().printHelp(serverName, options);
    }

}