/* * 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(); }