/*
* Copyright WSO2, Inc. (http://wso2.com)
*
* 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 org.wso2.carbon.cloud.gateway.agent.observer;
/**
* This represents the observer for subject. When a server goes down an observer will be created
* who is interested in subject(that is the status of the remote server)
*/
public interface CGAgentObserver {
/**
* Action to perform once the event is received
* @param s CGAgentSubject to act upon
*/
void update(CGAgentSubject s);
/**
* Returns the host name associated with the observer
* @return the remote host name
*/
String getHostName();
/**
* Returns the port of the server associated with the observer
* @return the port
*/
int getPort();
}