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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2013, 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.jboss.as.ee.subsystem;

import org.jboss.as.controller.AbstractWriteAttributeHandler;
import org.jboss.as.controller.AttributeDefinition;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.as.controller.OperationStepHandler;
import org.jboss.as.controller.ReloadRequiredRemoveStepHandler;
import org.jboss.as.controller.SimpleAttributeDefinition;
import org.jboss.as.controller.SimpleAttributeDefinitionBuilder;
import org.jboss.as.controller.SimpleResourceDefinition;
import org.jboss.as.controller.registry.ManagementResourceRegistration;
import org.jboss.as.ee.component.deployers.DefaultBindingsConfigurationProcessor;
import org.jboss.dmr.ModelNode;
import org.jboss.dmr.ModelType;

/**
 * The resource definition wrt EE default bindings configuration.
 * @author Eduardo Martins
 */
public class DefaultBindingsResourceDefinition extends SimpleResourceDefinition {

    public static final String CONTEXT_SERVICE = "context-service";
    public static final String DATASOURCE = "datasource";
    public static final String JMS_CONNECTION_FACTORY = "jms-connection-factory";
    public static final String MANAGED_EXECUTOR_SERVICE = "managed-executor-service";
    public static final String MANAGED_SCHEDULED_EXECUTOR_SERVICE = "managed-scheduled-executor-service";
    public static final String MANAGED_THREAD_FACTORY = "managed-thread-factory";

    public static final SimpleAttributeDefinition CONTEXT_SERVICE_AD =
            new SimpleAttributeDefinitionBuilder(CONTEXT_SERVICE, ModelType.STRING, true)
                    .setAllowExpression(true)
                    .build();

    public static final SimpleAttributeDefinition DATASOURCE_AD =
            new SimpleAttributeDefinitionBuilder(DATASOURCE, ModelType.STRING, true)
                    .setAllowExpression(true)
                    .build();

    public static final SimpleAttributeDefinition JMS_CONNECTION_FACTORY_AD =
            new SimpleAttributeDefinitionBuilder(JMS_CONNECTION_FACTORY, ModelType.STRING, true)
                    .setAllowExpression(true)
                    .build();

    public static final SimpleAttributeDefinition MANAGED_EXECUTOR_SERVICE_AD =
            new SimpleAttributeDefinitionBuilder(MANAGED_EXECUTOR_SERVICE, ModelType.STRING, true)
                    .setAllowExpression(true)
                    .build();

    public static final SimpleAttributeDefinition MANAGED_SCHEDULED_EXECUTOR_SERVICE_AD =
            new SimpleAttributeDefinitionBuilder(MANAGED_SCHEDULED_EXECUTOR_SERVICE, ModelType.STRING, true)
                    .setAllowExpression(true)
                    .build();

    public static final SimpleAttributeDefinition MANAGED_THREAD_FACTORY_AD =
            new SimpleAttributeDefinitionBuilder(MANAGED_THREAD_FACTORY, ModelType.STRING, true)
                    .setAllowExpression(true)
                    .build();

    static final SimpleAttributeDefinition[] ATTRIBUTES = { CONTEXT_SERVICE_AD, DATASOURCE_AD, JMS_CONNECTION_FACTORY_AD, MANAGED_EXECUTOR_SERVICE_AD, MANAGED_SCHEDULED_EXECUTOR_SERVICE_AD, MANAGED_THREAD_FACTORY_AD };

    private final DefaultBindingsConfigurationProcessor defaultBindingsConfigurationProcessor;

    public DefaultBindingsResourceDefinition(DefaultBindingsConfigurationProcessor defaultBindingsConfigurationProcessor) {
        super(EESubsystemModel.DEFAULT_BINDINGS_PATH, EeExtension.getResourceDescriptionResolver(EESubsystemModel.DEFAULT_BINDINGS), new DefaultBindingsAdd(defaultBindingsConfigurationProcessor), ReloadRequiredRemoveStepHandler.INSTANCE);
        this.defaultBindingsConfigurationProcessor = defaultBindingsConfigurationProcessor;
    }

    @Override
    public void registerAttributes(ManagementResourceRegistration resourceRegistration) {
        OperationStepHandler writeHandler = new WriteAttributeHandler();
        for (AttributeDefinition attr : ATTRIBUTES) {
            resourceRegistration.registerReadWriteAttribute(attr, null, writeHandler);
        }
    }

    private class WriteAttributeHandler extends AbstractWriteAttributeHandler {

        private WriteAttributeHandler() {
            super(DefaultBindingsResourceDefinition.ATTRIBUTES);
        }

        @Override
        protected boolean applyUpdateToRuntime(OperationContext context, ModelNode operation, String attributeName,
                                               ModelNode newValue, ModelNode currentValue, HandbackHolder handbackHolder) throws OperationFailedException {
            applyUpdateToDeploymentUnitProcessor(attributeName, newValue);
            return false;
        }

        @Override
        protected void revertUpdateToRuntime(OperationContext context, ModelNode operation, String attributeName,
                                             ModelNode valueToRestore, ModelNode valueToRevert, Void handback) throws OperationFailedException {
            applyUpdateToDeploymentUnitProcessor(attributeName, valueToRestore);
        }

        private void applyUpdateToDeploymentUnitProcessor(final String attributeName, final ModelNode newValue) throws OperationFailedException {
            final String attributeValue = newValue.isDefined() ? newValue.asString() : null;
            if (DefaultBindingsResourceDefinition.CONTEXT_SERVICE.equals(attributeName)) {
                defaultBindingsConfigurationProcessor.setContextService(attributeValue);
            } else if (DefaultBindingsResourceDefinition.DATASOURCE.equals(attributeName)) {
                defaultBindingsConfigurationProcessor.setDataSource(attributeValue);
            } else if (DefaultBindingsResourceDefinition.JMS_CONNECTION_FACTORY.equals(attributeName)) {
                defaultBindingsConfigurationProcessor.setJmsConnectionFactory(attributeValue);
            } else if (DefaultBindingsResourceDefinition.MANAGED_EXECUTOR_SERVICE.equals(attributeName)) {
                defaultBindingsConfigurationProcessor.setManagedExecutorService(attributeValue);
            } else if (DefaultBindingsResourceDefinition.MANAGED_SCHEDULED_EXECUTOR_SERVICE.equals(attributeName)) {
                defaultBindingsConfigurationProcessor.setManagedScheduledExecutorService(attributeValue);
            } else if (DefaultBindingsResourceDefinition.MANAGED_THREAD_FACTORY.equals(attributeName)) {
                defaultBindingsConfigurationProcessor.setManagedThreadFactory(attributeValue);
            }
        }
    }
}