net.hasor.tconsole.client.TelnetClient Maven / Gradle / Ivy

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The telnet console service for application.

There is a newer version: 4.2.5

/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project 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 net.hasor.tconsole.client;
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.codec.DelimiterBasedFrameDecoder;
import io.netty.handler.codec.Delimiters;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;
import net.hasor.tconsole.CommandExecutor;
import net.hasor.utils.future.BasicFuture;

import java.io.BufferedReader;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.atomic.AtomicBoolean;
/**
 * simple telnet client.
 */
public final class TelnetClient {
    public static String executeCommand(String host, int port, String command) throws Exception {
        StringWriter returnData = new StringWriter();
        doExecuteCommand(host, port, command, new HashMap<>(), returnData);
        return returnData.toString();
    }
    public static String executeCommand(String host, int port, String command, Map envMap) throws Exception {
        StringWriter returnData = new StringWriter();
        doExecuteCommand(host, port, command, envMap, returnData);
        return returnData.toString();
    }
    //
    private static void doExecuteCommand(String host, int port, final String command, Map envMap, StringWriter returnData) throws Exception {
        //
        StringWriter commands = new StringWriter();
        if (envMap != null) {
            for (String key : envMap.keySet()) {
                String val = envMap.get(key);
                commands.write("set " + key + " = " + val + " \n");
            }
        }
        commands.write("set " + CommandExecutor.AFTER_CLOSE_SESSION + " = true \n");
        commands.write(command + "\n");
        //
        EventLoopGroup group = new NioEventLoopGroup();
        final BasicFuture