DeploymentInspector.java

/*
 * 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.wildfly.plugin.common;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.jboss.as.controller.client.ModelControllerClient;
import org.jboss.as.controller.client.helpers.Operations;
import org.jboss.dmr.ModelNode;

/**
 * Utility to lookup up Deployments.
 *
 * @author <a href="mailto:mpaluch@paluch.biz">Mark Paluch</a>
 */
public class DeploymentInspector
{

	/**
	 * Utility Constructor.
	 */
	private DeploymentInspector()
	{

	}

	/**
	 * Lookup an existing Deployment using a static name or a pattern. At least exactComparisonName
	 * or deploymentNamePattern must be set.
	 *
	 * @param client
	 * @param exactComparisonName Name for exact matching.
	 * @param matchPattern Regex-Pattern for deployment matching.
	 * @return the name of the deployment or null.
	 */
	public static List<String> getDeployments(ModelControllerClient client,
			String exactComparisonName, String matchPattern)
	{

		if (exactComparisonName == null && matchPattern == null)
		{
			throw new IllegalArgumentException(
					"exactComparisonName and matchPattern are null. One of them must "
							+ "be set in order to find an existing deployment.");
		}

		// CLI :read-children-names(child-type=deployment)
		final ModelNode op = ServerOperations.createListDeploymentsOperation();
		final ModelNode listDeploymentsResult;
		final List<String> result = new ArrayList<String>();
		try
		{
			listDeploymentsResult = client.execute(op);
			// Check to make sure there is an outcome
			if (Operations.isSuccessfulOutcome(listDeploymentsResult))
			{
				if (ServerOperations.isSuccessfulOutcome(listDeploymentsResult))
				{
					final List<ModelNode> deployments = ServerOperations.readResult(
							listDeploymentsResult).asList();
					for (ModelNode n : deployments)
					{

						if (matches(n.asString(), exactComparisonName, matchPattern))
						{
							result.add(n.asString());
						}
					}
				}
			} else
			{
				throw new IllegalStateException(
						ServerOperations.getFailureDescriptionAsString(listDeploymentsResult));
			}
		} catch (IOException e)
		{
			throw new IllegalStateException(String.format("Could not execute operation '%s'", op),
					e);
		}

		Collections.sort(result);
		return result;

	}

	private static boolean matches(String deploymentName, String exactComparisonName,
			String matchPattern)
	{

		if (matchPattern != null)
		{
			return deploymentName.matches(matchPattern);
		}

		return exactComparisonName.equals(deploymentName);
	}
}