MCCHelper.java

/*
 * RHQ Management Platform
 * Copyright (C) 2005-2013 Red Hat, Inc.
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation version 2 of the License.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */

package org.rhq.common.jbossas.client.controller;

import org.jboss.as.controller.client.ModelControllerClient;

/**
 * Helper class to get a ModelContollerClient for the RHQ default settings.
 * This follows the methods in the Installer, but assumes defaults.
 * @author Heiko W. Rupp
 */
public class MCCHelper {

    private static final String RHQ_JBOSS_MANAGEMENT_PORT_PROPERTY = "jboss.management.native.port";
    private static final int RHQ_JBOSS_MANAGEMENT_PORT_PROPERTY_DEFAULT_VALUE = 6999;


    public static ModelControllerClient createModelControllerClient() {
        return createModelControllerClient("localhost", getPort());
    }

    public static ModelControllerClient createModelControllerClient(String host, int port) {
        ModelControllerClient client;
        try {
            if (host==null || host.isEmpty())
                host = "localhost";

            if (port <= 0 || port > (1 << 16) - 1) {
                port = RHQ_JBOSS_MANAGEMENT_PORT_PROPERTY_DEFAULT_VALUE;
            }
            client = ModelControllerClient.Factory.create(host, port);
        } catch (Exception e) {
            throw new RuntimeException("Cannot obtain client connection to the app server", e);
        }
        return client;
    }

    public static void safeClose(ModelControllerClient mcc) {
        if (mcc != null) {
            try {
                mcc.close();
            } catch (Exception e) {
                //ignore
            }
        }
    }

    private static int getPort() {
        // The property may return "" so also use "" as the default to ensure we set it to something useful
        String result = System.getProperty(RHQ_JBOSS_MANAGEMENT_PORT_PROPERTY, "");

        if (!"".equals(result)) {
            try {
                return Integer.parseInt(result);
            } catch (NumberFormatException nfe) {
                return RHQ_JBOSS_MANAGEMENT_PORT_PROPERTY_DEFAULT_VALUE;
            }
        } else return RHQ_JBOSS_MANAGEMENT_PORT_PROPERTY_DEFAULT_VALUE;
    }

}