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

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Here is the source code for org.rhq.plugins.jslee.SbbComponent.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.Set;

import javax.management.MBeanServerConnection;
import javax.management.MBeanServerInvocationHandler;
import javax.management.ObjectName;
import javax.security.auth.login.LoginException;
import javax.slee.SbbID;
import javax.slee.management.DeploymentMBean;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.rhq.core.domain.configuration.Configuration;
import org.rhq.core.domain.measurement.AvailabilityType;
import org.rhq.core.domain.measurement.MeasurementDataTrait;
import org.rhq.core.domain.measurement.MeasurementReport;
import org.rhq.core.domain.measurement.MeasurementScheduleRequest;
import org.rhq.core.pluginapi.inventory.InvalidPluginConfigurationException;
import org.rhq.core.pluginapi.inventory.ResourceComponent;
import org.rhq.core.pluginapi.inventory.ResourceContext;
import org.rhq.core.pluginapi.measurement.MeasurementFacet;
import org.rhq.core.pluginapi.operation.OperationFacet;
import org.rhq.core.pluginapi.operation.OperationResult;
import org.rhq.plugins.jslee.utils.MBeanServerUtils;

public class SbbComponent implements ResourceComponent<JainSleeServerComponent>, MeasurementFacet, OperationFacet {
    private final Log log = LogFactory.getLog(this.getClass());

    private ResourceContext<JainSleeServerComponent> resourceContext;
    private SbbID sbbId = null;
    private MBeanServerUtils mbeanUtils = null;

    private boolean isUp = false;
    private ObjectName deploymentMBeanObj;

    public void start(ResourceContext<JainSleeServerComponent> context)
            throws InvalidPluginConfigurationException, Exception {
        if (log.isTraceEnabled()) {
            log.trace("start(" + context + ") called.");
        }

        this.resourceContext = context;
        this.deploymentMBeanObj = new ObjectName(DeploymentMBean.OBJECT_NAME);

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

        String name = this.resourceContext.getPluginConfiguration().getSimple("name").getStringValue();
        String version = this.resourceContext.getPluginConfiguration().getSimple("version").getStringValue();
        String vendor = this.resourceContext.getPluginConfiguration().getSimple("vendor").getStringValue();

        sbbId = new SbbID(name, vendor, version);
    }

    public void stop() {
        if (log.isTraceEnabled()) {
            log.trace("stop() called.");
        }
    }

    public AvailabilityType getAvailability() {
        if (log.isTraceEnabled()) {
            log.trace("getAvailability() called.");
        }

        this.isUp = false;

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

            DeploymentMBean depMBean = (DeploymentMBean) MBeanServerInvocationHandler.newProxyInstance(connection,
                    deploymentMBeanObj, DeploymentMBean.class, false);

            for (SbbID activeSbbId : depMBean.getSbbs()) {
                if (activeSbbId.equals(sbbId)) {
                    this.isUp = true;
                }
            }
        } catch (Exception e) {
            log.error("getAvailability failed for SbbID = " + this.sbbId);
        } finally {
            try {
                this.mbeanUtils.logout();
            } catch (LoginException e) {
                if (log.isDebugEnabled()) {
                    log.debug("Failed to logout from secured JMX", e);
                }
            }
        }

        return this.isUp ? AvailabilityType.UP : AvailabilityType.DOWN;
    }

    public void getValues(MeasurementReport report, Set<MeasurementScheduleRequest> metrics) throws Exception {
        if (log.isTraceEnabled()) {
            log.trace("getValues(" + report + "," + metrics + ") called.");
        }

        for (MeasurementScheduleRequest request : metrics) {
            if (request.getName().equals("state")) {
                report.addData(new MeasurementDataTrait(request, this.isUp ? "UP" : "DOWN"));
            }
        }
    }

    public OperationResult invokeOperation(String name, Configuration parameters)
            throws InterruptedException, Exception {
        if (log.isDebugEnabled()) {
            log.debug("invokeOperation(" + name + ", " + parameters + ") called.");
        }

        throw new UnsupportedOperationException("Operation [" + name + "] is not supported.");
    }
}