/*
 * 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.shardingsphere.elasticjob.lite.internal.snapshot;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.Socket;

import lombok.AccessLevel;
import lombok.NoArgsConstructor;

@NoArgsConstructor(access = AccessLevel.PRIVATE)
public final class SocketUtils {
    
    /**
     * Send command.
     *
     * @param command command
     * @param dumpPort the port for dumping data
     * @return result of command
     * @throws IOException io exception
     */
    public static String sendCommand(final String command, final int dumpPort) throws IOException {
        try (
                Socket socket = new Socket("127.0.0.1", dumpPort);
                BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
                BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()))
            ) {
            writer.write(command);
            writer.newLine();
            writer.flush();
            return reader.readLine();
        }
    }
}
