/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014, Red Hat, Inc., and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.wildfly.extension.messaging.activemq.ha;

import static org.wildfly.extension.messaging.activemq.CommonAttributes.HA_POLICY;
import static org.wildfly.extension.messaging.activemq.MessagingExtension.CONFIGURATION_MASTER_PATH;
import static org.wildfly.extension.messaging.activemq.MessagingExtension.CONFIGURATION_PRIMARY_PATH;
import static org.wildfly.extension.messaging.activemq.MessagingExtension.CONFIGURATION_SECONDARY_PATH;
import static org.wildfly.extension.messaging.activemq.MessagingExtension.CONFIGURATION_SLAVE_PATH;
import static org.wildfly.extension.messaging.activemq.MessagingExtension.SHARED_STORE_COLOCATED_PATH;
import static org.wildfly.extension.messaging.activemq.ha.HAAttributes.BACKUP_PORT_OFFSET;
import static org.wildfly.extension.messaging.activemq.ha.HAAttributes.BACKUP_REQUEST_RETRIES;
import static org.wildfly.extension.messaging.activemq.ha.HAAttributes.BACKUP_REQUEST_RETRY_INTERVAL;
import static org.wildfly.extension.messaging.activemq.ha.HAAttributes.MAX_BACKUPS;
import static org.wildfly.extension.messaging.activemq.ha.HAAttributes.REQUEST_BACKUP;
import static org.wildfly.extension.messaging.activemq.ha.ManagementHelper.createAddOperation;

import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

import org.jboss.as.controller.AbstractWriteAttributeHandler;
import org.jboss.as.controller.AttributeDefinition;
import org.jboss.as.controller.PathAddress;
import org.jboss.as.controller.PathElement;
import org.jboss.as.controller.PersistentResourceDefinition;
import org.jboss.as.controller.ReloadRequiredRemoveStepHandler;
import org.jboss.as.controller.registry.AliasEntry;
import org.jboss.as.controller.registry.ManagementResourceRegistration;
import org.wildfly.extension.messaging.activemq.ActiveMQReloadRequiredHandlers;
import org.wildfly.extension.messaging.activemq.MessagingExtension;

/**
 * @author <a href="http://jmesnil.net/">Jeff Mesnil</a> (c) 2014 Red Hat inc.
 */
public class SharedStoreColocatedDefinition extends PersistentResourceDefinition {

    public static final Collection<AttributeDefinition> ATTRIBUTES =  Collections.unmodifiableList(Arrays.asList(
            (AttributeDefinition) REQUEST_BACKUP,
            BACKUP_REQUEST_RETRIES,
            BACKUP_REQUEST_RETRY_INTERVAL,
            MAX_BACKUPS,
            BACKUP_PORT_OFFSET
    ));

    public static final SharedStoreColocatedDefinition INSTANCE = new SharedStoreColocatedDefinition();

    private SharedStoreColocatedDefinition() {
        super(SHARED_STORE_COLOCATED_PATH,
                MessagingExtension.getResourceDescriptionResolver(HA_POLICY),
                createAddOperation(HA_POLICY, false, ATTRIBUTES),
                ReloadRequiredRemoveStepHandler.INSTANCE);
    }

    @Override
    public void registerAttributes(ManagementResourceRegistration resourceRegistration) {
        AbstractWriteAttributeHandler writeAttribute = new ActiveMQReloadRequiredHandlers.WriteAttributeHandler(ATTRIBUTES);
        for (AttributeDefinition attribute : ATTRIBUTES) {
            resourceRegistration.registerReadWriteAttribute(attribute, null, writeAttribute);
        }
    }

    @Override
    public Collection<AttributeDefinition> getAttributes() {
        return ATTRIBUTES;
    }

    @Override
    public void registerChildren(ManagementResourceRegistration resourceRegistration) {
        super.registerChildren(resourceRegistration);
        resourceRegistration.registerAlias(CONFIGURATION_MASTER_PATH, createAlias(resourceRegistration, CONFIGURATION_PRIMARY_PATH));
        resourceRegistration.registerAlias(CONFIGURATION_SLAVE_PATH, createAlias(resourceRegistration, CONFIGURATION_SECONDARY_PATH));
    }

    private static AliasEntry createAlias(ManagementResourceRegistration resourceRegistration, PathElement target) {
        return new AliasEntry(resourceRegistration.getSubModel(PathAddress.pathAddress(target))) {
            @Override
            public PathAddress convertToTargetAddress(PathAddress aliasAddress, AliasEntry.AliasContext aliasContext) {
                return aliasAddress.getParent().append(target);
            }
        };

    }

    @Override
    protected List<? extends PersistentResourceDefinition> getChildren() {
        return Collections.unmodifiableList(Arrays.asList(
                SharedStorePrimaryDefinition.CONFIGURATION_INSTANCE,
                SharedStoreSecondaryDefinition.CONFIGURATION_INSTANCE));
    }

}