org.rhq.plugins.jslee.ServiceDiscoveryComponent.java Source code

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Here is the source code for org.rhq.plugins.jslee.ServiceDiscoveryComponent.java

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/*
 * JBoss, Home of Professional Open Source
 * Copyright 2011, Red Hat, Inc. and individual contributors
 * by the @authors tag. See the copyright.txt 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.rhq.plugins.jslee;

import java.util.HashSet;
import java.util.Set;

import javax.management.MBeanServerConnection;
import javax.management.ObjectName;
import javax.security.auth.login.LoginException;
import javax.slee.ServiceID;
import javax.slee.management.ServiceManagementMBean;
import javax.slee.management.ServiceState;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.rhq.core.domain.configuration.PropertySimple;
import org.rhq.core.domain.resource.ResourceType;
import org.rhq.core.pluginapi.inventory.DiscoveredResourceDetails;
import org.rhq.core.pluginapi.inventory.InvalidPluginConfigurationException;
import org.rhq.core.pluginapi.inventory.ResourceDiscoveryComponent;
import org.rhq.core.pluginapi.inventory.ResourceDiscoveryContext;
import org.rhq.plugins.jslee.utils.MBeanServerUtils;

public class ServiceDiscoveryComponent implements ResourceDiscoveryComponent<JainSleeServerComponent> {

    private final Log log = LogFactory.getLog(this.getClass());

    public Set<DiscoveredResourceDetails> discoverResources(
            ResourceDiscoveryContext<JainSleeServerComponent> context)
            throws InvalidPluginConfigurationException, Exception {
        if (log.isTraceEnabled()) {
            log.trace("discoverResources(" + context + ") called.");
        }
        Set<DiscoveredResourceDetails> discoveredServices = new HashSet<DiscoveredResourceDetails>();
        ObjectName servicemanagement = new ObjectName(ServiceManagementMBean.OBJECT_NAME);

        MBeanServerUtils mbeanUtils = context.getParentResourceComponent().getMBeanServerUtils();

        try {
            MBeanServerConnection connection = mbeanUtils.getConnection();
            mbeanUtils.login();

            ServiceID[] activeServices = (ServiceID[]) connection.invoke(servicemanagement, "getServices",
                    new Object[] { ServiceState.ACTIVE }, new String[] { ServiceState.class.getName() });

            ServiceID[] inactiveServices = (ServiceID[]) connection.invoke(servicemanagement, "getServices",
                    new Object[] { ServiceState.INACTIVE }, new String[] { ServiceState.class.getName() });

            ServiceID[] stoppingServices = (ServiceID[]) connection.invoke(servicemanagement, "getServices",
                    new Object[] { ServiceState.STOPPING }, new String[] { ServiceState.class.getName() });

            addService(activeServices, discoveredServices, context.getResourceType());
            addService(inactiveServices, discoveredServices, context.getResourceType());
            addService(stoppingServices, discoveredServices, context.getResourceType());

            if (log.isInfoEnabled()) {
                log.info("Discovered " + discoveredServices.size() + " JAIN SLEE Service Components.");
            }

            return discoveredServices;
        } finally {
            try {
                mbeanUtils.logout();
            } catch (LoginException e) {
                if (log.isDebugEnabled()) {
                    log.debug("Failed to logout from secured JMX", e);
                }
            }
        }
    }

    private void addService(ServiceID[] services, Set<DiscoveredResourceDetails> discoveredServices,
            ResourceType resourceType) {
        for (ServiceID serviceID : services) {
            String key = serviceID.toString();
            String description = serviceID.toString();

            // Create new Service resource
            DiscoveredResourceDetails discoveredService = new DiscoveredResourceDetails(resourceType, key,
                    serviceID.getName(), serviceID.getVersion(), description, null, null);

            // Add properties to Service resource
            discoveredService.getPluginConfiguration().put(new PropertySimple("name", serviceID.getName()));
            discoveredService.getPluginConfiguration().put(new PropertySimple("version", serviceID.getVersion()));
            discoveredService.getPluginConfiguration().put(new PropertySimple("vendor", serviceID.getVendor()));

            discoveredServices.add(discoveredService);
        }
    }
}