com.liferay.blade.cli.ShellCommand.java Source code

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Here is the source code for com.liferay.blade.cli.ShellCommand.java

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/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * 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 com.liferay.blade.cli;

import aQute.lib.getopt.Arguments;
import aQute.lib.getopt.Description;
import aQute.lib.getopt.Options;

import java.util.Collections;

import org.apache.commons.lang3.StringUtils;

/**
 * @author Gregory Amerson
 */
public class ShellCommand {

    public static final String DESCRIPTION = "Connects to Liferay and executes gogo command and returns output.";

    public ShellCommand(blade blade, ShellOptions options) throws Exception {
        _blade = blade;
        _options = options;
        _host = options.host() != null ? options.host() : "localhost";
        _port = options.port() != 0 ? options.port() : 11311;
    }

    public void execute() throws Exception {
        if (!Util.canConnect(_host, _port)) {
            addError("sh", "Unable to connect to gogo shell on " + _host + ":" + _port);

            return;
        }

        String gogoCommand = StringUtils.join(_options._arguments(), " ");

        executeCommand(gogoCommand);
    }

    @Arguments(arg = { "gogo-command", "args..." })
    @Description(DESCRIPTION)
    public interface ShellOptions extends Options {

        @Description("")
        public String host();

        @Description("The port to use to connect to gogo shell")
        public int port();

    }

    private void addError(String prefix, String msg) {
        _blade.addErrors(prefix, Collections.singleton(msg));
    }

    private void executeCommand(String cmd) throws Exception {
        final GogoTelnetClient telnetClient = new GogoTelnetClient(_host, _port);

        String response = telnetClient.send(cmd);

        _blade.out().print(response);

        telnetClient.close();
    }

    private final blade _blade;
    private final String _host;
    private final ShellOptions _options;
    private final int _port;

}