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

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Here is the source code for org.apache.hive.service.server.HiveServerServerOptionsProcessor.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.*;

public class HiveServerServerOptionsProcessor {
    private final Options options = new Options();
    private org.apache.commons.cli.CommandLine commandLine;
    private final String serverName;
    private final StringBuilder debugMessage = new StringBuilder();

    @SuppressWarnings("static-access")
    public HiveServerServerOptionsProcessor(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());
        // -deregister <versionNumber>
        options.addOption(OptionBuilder.hasArgs(1).withArgName("versionNumber").withLongOpt("deregister")
                .withDescription("Deregister all instances of given version from dynamic service discovery")
                .create());
        options.addOption(new Option("H", "help", false, "Print help information"));
    }

    public HiveServer2.ServerOptionsProcessorResponse parse(String[] argv) {
        try {
            commandLine = new GnuParser().parse(options, argv);
            // Process --hiveconf
            // Get hiveconf param values and set the System property values
            Properties confProps = commandLine.getOptionProperties("hiveconf");
            for (String propKey : confProps.stringPropertyNames()) {
                // save logging message for log4j output latter after log4j initialize properly
                debugMessage.append("Setting " + propKey + "=" + confProps.getProperty(propKey) + ";\n");
                // System.setProperty("hivecli." + propKey, confProps.getProperty(propKey));
                System.setProperty(propKey, confProps.getProperty(propKey));
            }

            // Process --help
            if (commandLine.hasOption('H')) {
                return new HiveServer2.ServerOptionsProcessorResponse(
                        new HiveServer2.HelpOptionExecutor(serverName, options));
            }

            // Process --deregister
            if (commandLine.hasOption("deregister")) {
                return new HiveServer2.ServerOptionsProcessorResponse(
                        new HiveServer2.DeregisterOptionExecutor(commandLine.getOptionValue("deregister")));
            }
        } catch (ParseException e) {
            // Error out & exit - we were not able to parse the args successfully
            System.err.println("Error starting HiveServer2 with given arguments: ");
            System.err.println(e.getMessage());
            System.exit(-1);
        }
        // Default executor, when no option is specified
        return new HiveServer2.ServerOptionsProcessorResponse(new HiveServer2.StartOptionExecutor());
    }
}