nl.kpmg.lcm.Main.java Source code

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Here is the source code for nl.kpmg.lcm.Main.java

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/*
 * Copyright 2016 KPMG N.V. (unless otherwise stated).
 *
 * 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 nl.kpmg.lcm;

import nl.kpmg.lcm.common.InvalidArgumentsException;
import nl.kpmg.lcm.common.ServerException;
import nl.kpmg.lcm.server.Server;
import nl.kpmg.lcm.ui.UI;

import org.apache.commons.lang.ArrayUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;

/**
 * Main class.
 *
 */
public class Main {

    private static final Logger LOG = LoggerFactory.getLogger(Main.class.getName());

    /**
     * Main method.
     *
     * @param args
     * @throws IOException
     */
    public static void main(String[] args) throws IOException {

        try {
            if (args.length == 0) {
                throw new InvalidArgumentsException("No command found");
            }

            final String command = args[0];
            final String[] arguments = (String[]) ArrayUtils.removeElement(args, command);

            if (command.equals("server")) {
                LOG.info("Starting LCM server");

                final Server server = new Server();
                server.start();

            } else if (command.equals("ui")) {
                LOG.info("Starting LCM UI");

                final UI ui = new UI();
                ui.start();
            } else if (command.equals("cli")) {
                LOG.info("Cli not implemented yet.");
            } else if (command.equals("help")) {
                if (arguments.length == 1) {
                    displayHelp(arguments[0]);
                } else {
                    displayHelp();
                }
            } else {
                throw new InvalidArgumentsException(String.format("Caught a unhandled command: %s", command));
            }
        } catch (InvalidArgumentsException e) {
            displayHelp(e);
        } catch (ServerException ex) {
            LOG.error("Failed starting the server", ex);
        }
    }

    private static void displayHelp() {
        System.out.println("Help text");
    }

    private static void displayHelp(InvalidArgumentsException e) {
        System.out.println(e.getMessage());
        displayHelp();
    }

    private static void displayHelp(String command) {
        switch (command) {
        case "server":
            System.out.println("Specific server help text");
            break;
        case "client":
            System.out.println("Specific client help text");
            break;
        case "ui":
            System.out.println("Specific uit help text");
            break;
        }
    }
}