/*
 * 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.orchestration.core.registrycenter.instance;

import lombok.Getter;
import org.apache.shardingsphere.orchestration.core.registrycenter.util.IpUtils;


/**
 * Orchestration instance.
 */
@Getter
public final class OrchestrationInstance {
    
    private static final String DELIMITER = "@";

    private static OrchestrationInstance instance;
    
    private final String instanceId;

    public OrchestrationInstance(final int port) {
        instanceId = IpUtils.getIp() + DELIMITER + port;
    }

    /**
     * Get instance.
     *
     * @param   port        port on which the instance is running
     * @return  instance    the orchestration instance
     */
    public static OrchestrationInstance getInstance(final int port) {
        if (null == instance) {
            synchronized (OrchestrationInstance.class) {
                if (null == instance) {
                    instance = new OrchestrationInstance(port);
                }
            }
        }
        return instance;
    }

}

@@ -979,16 +979,40 @@
 Utils;%0A%0A
+import java.util.UUID;%0A%0A
 %0A/**%0A * 
@@ -1274,36 +1274,42 @@
 tance(final int 
-port
+identifier
 ) %7B%0A        inst
@@ -1347,20 +1347,69 @@
 MITER + 
-port
+identifier + DELIMITER + UUID.randomUUID().toString()
 ;%0A    %7D%0A
@@ -1465,24 +1465,30 @@
 m   
-port        port
+identifier  identifier
  on 
@@ -1642,20 +1642,26 @@
 nal int 
-port
+identifier
 ) %7B%0A    
@@ -1842,20 +1842,26 @@
 nstance(
-port
+identifier
 );%0A     

add uuid