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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2016-2018 Payara Foundation and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://github.com/payara/Payara/blob/main/LICENSE.txt
 * See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * The Payara Foundation designates this particular file as subject to the "Classpath"
 * exception as provided by the Payara Foundation in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
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package fish.payara.persistence.eclipselink.cache.coordination;

import org.eclipse.persistence.internal.sessions.coordination.RemoteConnection;
import org.eclipse.persistence.sessions.coordination.broadcast.BroadcastTransportManager;

import java.util.Collections;
import java.util.Map;
import java.util.logging.Logger;

/**
 * Hazelcast based {@link BroadcastTransportManager}.
 *
 * @author Sven Diedrichsen
 */
public class HazelcastPublishingTransportManager extends BroadcastTransportManager {

    private static final Logger LOG = Logger.getLogger(HazelcastPublishingTransportManager.class.getName());
    /**
     * The connection with the hz topic.
     */
    private HazelcastTopicRemoteConnection connection;

    public HazelcastPublishingTransportManager() {
        super();
        LOG.info("HazelcastPublishingTransportManager initialized.");
    }

    /**
     * Method to return the connection with the hazelcast topic.
     *
     * @return Map containing the hz connection.
     */
    @Override
    public Map getConnectionsToExternalServicesForCommandPropagation() {
        if (this.connection != null) {
            return Collections.singletonMap(this.connection.getServiceId().getId(), this.connection);
        }
        return Collections.emptyMap();
    }

    /**
     * Creates the hz connection.
     */
    @Override
    public void createLocalConnection() {
        this.connection = new HazelcastTopicRemoteConnection(this.getRemoteCommandManager());
    }

    /**
     * Closes and removes the connection.
     */
    @Override
    public void removeLocalConnection() {
        if (this.connection != null) {
            this.connection.close();
            this.connection = null;
        }
    }

}