org.apache.james.mpt.app.Main.java Source code

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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   *
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 * 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.                                           *
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package org.apache.james.mpt.app;

import java.io.File;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.GnuParser;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.OptionBuilder;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;

/**
 * <p>Runs MPT application.</p>
 * <p>Return values:</p>
 * <table>
 * <tr><td>0</td><td>Success</td></tr>
 * <tr><td>-1</td><td>Illegal Arguments</td></tr>
 * <tr><td>1</td><td>Script not found</td></tr>
 * <tr><td>1</td><td>Port not a number</td></tr>
 * </table>
 */
public class Main {

    private static final int FILE_NOT_FOUND = 1;
    private static final int PORT_NOT_A_NUMBER = 2;

    private static final char FILE_OPTION = 'f';
    private static final char PORT_OPTION = 'p';
    private static final char HOST_OPTION = 'h';
    private static final char SHABANG_OPTION = 's';
    private static final char VERBOSE_OPTION = 'v';

    public static final void main(String[] args) throws Exception {
        Options options = buildOptions();

        try {

            CommandLineParser parser = new GnuParser();
            CommandLine cmd = parser.parse(options, args);
            runCommand(cmd);

        } catch (ParseException e) {
            System.out.println(e.getMessage());
            new HelpFormatter().printHelp("mpt", options);
            System.exit(-1);
        }

    }

    private static void runCommand(CommandLine cmd) throws Exception {
        boolean verbose = Boolean.parseBoolean(cmd.getOptionValue(VERBOSE_OPTION, Boolean.toString(false)));
        File file = new File(cmd.getOptionValue(FILE_OPTION));
        if (file.exists()) {
            try {
                int port = Integer.parseInt(cmd.getOptionValue(PORT_OPTION));
                String host = cmd.getOptionValue(HOST_OPTION, "localhost");
                String shabang = cmd.getOptionValue(SHABANG_OPTION, null);
                RunScript runner = new RunScript(file, port, host, shabang, verbose);
                runner.run();

            } catch (NumberFormatException e) {
                System.out.println("Port must be numeric");
                System.exit(PORT_NOT_A_NUMBER);
            }
        } else {
            System.out.println("Script not found");
            System.exit(FILE_NOT_FOUND);
        }
    }

    private static Options buildOptions() {
        Options options = new Options();

        addRunScriptOptions(options);

        return options;
    }

    @SuppressWarnings("static-access")
    private static void addRunScriptOptions(Options options) {
        // -f <file> runs this script
        options.addOption(OptionBuilder.withArgName("file").hasArg().withDescription("run this script")
                .withLongOpt("file").isRequired().create(FILE_OPTION));

        // -p <port> runs against this port
        options.addOption(OptionBuilder.withArgName("port").hasArg().withDescription("runs against this port")
                .withLongOpt("port").isRequired().create(PORT_OPTION));

        // -h <host> runs against this host
        options.addOption(OptionBuilder.withArgName("host").hasArg()
                .withDescription("runs against this host (defaults to localhost)").withLongOpt("host")
                .isRequired(false).create(HOST_OPTION));
        // -s <shabang> sets shabang
        options.addOption(
                OptionBuilder.withArgName("shabang").hasArg().withDescription("sets shabang (defaults to empty)")
                        .withLongOpt("shabang").isRequired(false).create(SHABANG_OPTION));
        // -v sets logging to verbose
        options.addOption(OptionBuilder.withDescription("prints lots of logging").withLongOpt("verbose")
                .isRequired(false).create(VERBOSE_OPTION));
    }
}