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/*
 * JBoss, Home of Professional Open Source
 * Copyright 2011 Red Hat Inc. and/or its affiliates and other contributors
 * as indicated by the @authors tag. All rights reserved.
 * See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU Lesser General Public License, v. 2.1.
 * This program is distributed in the hope that it will be useful, but WITHOUT A
 * 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,
 * v.2.1 along with this distribution; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301, USA.
 */
package org.jboss.as.host.controller.operations;


import org.jboss.as.controller.AttributeDefinition;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationDefinition;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.as.controller.OperationStepHandler;
import org.jboss.as.controller.SimpleAttributeDefinitionBuilder;
import org.jboss.as.controller.SimpleOperationDefinitionBuilder;
import org.jboss.as.controller.descriptions.ModelDescriptionConstants;
import org.jboss.as.controller.registry.OperationEntry;
import org.jboss.as.domain.controller.DomainController;
import org.jboss.as.host.controller.descriptions.HostResolver;
import org.jboss.as.process.ExitCodes;
import org.jboss.dmr.ModelNode;
import org.jboss.dmr.ModelType;

/**
 * Stops a host.
 *
 * @author Kabir Khan
 */
public class HostShutdownHandler implements OperationStepHandler {

    public static final String OPERATION_NAME = "shutdown";

    private final DomainController domainController;

    private static final AttributeDefinition RESTART = SimpleAttributeDefinitionBuilder.create(ModelDescriptionConstants.RESTART, ModelType.BOOLEAN, true)
            .setAllowNull(true)
            .build();
    public static final OperationDefinition DEFINITION = new SimpleOperationDefinitionBuilder(OPERATION_NAME, HostResolver.getResolver("host"))
            .addParameter(RESTART)
            .withFlag(OperationEntry.Flag.HOST_CONTROLLER_ONLY)
            .setRuntimeOnly()
            .build();

    /**
     * Create the ServerAddHandler
     */
    public HostShutdownHandler(final DomainController domainController) {
        this.domainController = domainController;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void execute(OperationContext context, ModelNode operation) throws OperationFailedException {
        final boolean restart = RESTART.validateOperation(operation).asBoolean(false);
        context.addStep(new OperationStepHandler() {
            @Override
            public void execute(OperationContext context, ModelNode operation) throws OperationFailedException {
                // Even though we don't read from the service registry, we are modifying a service
                context.getServiceRegistry(true);
                if (restart) {
                    //Add the exit code so that we get respawned
                    domainController.stopLocalHost(ExitCodes.RESTART_PROCESS_FROM_STARTUP_SCRIPT);
                } else {
                    domainController.stopLocalHost();
                }
                context.completeStep(OperationContext.RollbackHandler.NOOP_ROLLBACK_HANDLER);
            }
        }, OperationContext.Stage.RUNTIME);
        context.stepCompleted();
    }
}