GroupingHandler.java

/*
 * 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.activemq.artemis.core.server.group;

import org.apache.activemq.artemis.api.core.SimpleString;
import org.apache.activemq.artemis.core.server.ActiveMQComponent;
import org.apache.activemq.artemis.core.server.group.impl.GroupBinding;
import org.apache.activemq.artemis.core.server.group.impl.Proposal;
import org.apache.activemq.artemis.core.server.group.impl.Response;
import org.apache.activemq.artemis.core.server.management.NotificationListener;

public interface GroupingHandler extends NotificationListener, ActiveMQComponent {

   // this method should maintain a WeakHash list, no need to remove the elements
   void addListener(UnproposalListener listener);

   SimpleString getName();

   void resendPending() throws Exception;

   Response propose(Proposal proposal) throws Exception;

   void proposed(Response response) throws Exception;

   void sendProposalResponse(Response response, int distance) throws Exception;

   Response receive(Proposal proposal, int distance) throws Exception;

   void addGroupBinding(GroupBinding groupBinding);

   Response getProposal(SimpleString fullID, boolean touchTime);

   void awaitBindings() throws Exception;

   /**
    * this will force a removal of the group everywhere with an unproposal (dinstance=0).
    * This is for the case where a node goes missing
    */
   void forceRemove(SimpleString groupid, SimpleString clusterName) throws Exception;

   void remove(SimpleString groupid, SimpleString clusterName) throws Exception;

   void remove(SimpleString groupid, SimpleString clusterName, int distance) throws Exception;
}