Package org.jboss.as.osgi.deployment

Source Code of org.jboss.as.osgi.deployment.OSGiDeploymentService$OSGiDeploymentListener

/*
* JBoss, Home of Professional Open Source.
* Copyright 2010, 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.jboss.as.osgi.deployment;

import java.util.HashSet;
import java.util.Set;
import java.util.concurrent.CopyOnWriteArraySet;

import org.jboss.as.osgi.service.BundleContextService;
import org.jboss.as.osgi.service.BundleManagerService;
import org.jboss.as.osgi.service.FrameworkService;
import org.jboss.as.osgi.service.PackageAdminService;
import org.jboss.as.osgi.service.StartLevelService;
import org.jboss.as.server.deployment.DeploymentPhaseContext;
import org.jboss.as.server.deployment.DeploymentUnit;
import org.jboss.as.server.deployment.Services;
import org.jboss.logging.Logger;
import org.jboss.msc.service.AbstractServiceListener;
import org.jboss.msc.service.Service;
import org.jboss.msc.service.ServiceBuilder;
import org.jboss.msc.service.ServiceContainer;
import org.jboss.msc.service.ServiceController;
import org.jboss.msc.service.ServiceController.Mode;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.ServiceTarget;
import org.jboss.msc.service.StartContext;
import org.jboss.msc.service.StartException;
import org.jboss.msc.service.StopContext;
import org.jboss.msc.value.InjectedValue;
import org.jboss.osgi.deployment.deployer.Deployment;
import org.jboss.osgi.framework.bundle.BundleManager;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.framework.BundleException;
import org.osgi.service.packageadmin.PackageAdmin;
import org.osgi.service.startlevel.StartLevel;

/**
* Service responsible for creating and managing the life-cycle of an OSGi deployment.
*
* @author Thomas.Diesler@jboss.com
* @since 20-Sep-2010
*/
public class OSGiDeploymentService implements Service<Deployment> {

    private static final Logger log = Logger.getLogger("org.jboss.as.osgi");
    private static final OSGiDeploymentListener listener = new OSGiDeploymentListener();

    public static final ServiceName SERVICE_NAME_BASE = ServiceName.JBOSS.append("osgi", "deployment");

    private final Deployment deployment;
    private InjectedValue<BundleContext> injectedBundleContext = new InjectedValue<BundleContext>();
    private InjectedValue<BundleManager> injectedBundleManager = new InjectedValue<BundleManager>();

    private OSGiDeploymentService(Deployment deployment) {
        this.deployment = deployment;
    }

    public static void addService(DeploymentPhaseContext phaseContext, Deployment deployment) {
        final DeploymentUnit deploymentUnit = phaseContext.getDeploymentUnit();
        final OSGiDeploymentService service = new OSGiDeploymentService(deployment);
        final String contextName = deploymentUnit.getName();
        final ServiceName serviceName = getServiceName(contextName);
        final ServiceTarget serviceTarget = phaseContext.getServiceTarget();
        ServiceBuilder<Deployment> serviceBuilder = serviceTarget.addService(serviceName, service);
        serviceBuilder.addDependency(BundleContextService.SERVICE_NAME, BundleContext.class, service.injectedBundleContext);
        serviceBuilder.addDependency(BundleManagerService.SERVICE_NAME, BundleManager.class, service.injectedBundleManager);
        serviceBuilder.addDependency(Services.deploymentUnitName(contextName));
        serviceBuilder.addDependency(PackageAdminService.SERVICE_NAME);
        serviceBuilder.setInitialMode(Mode.ACTIVE);
        serviceBuilder.addListener(listener);
        serviceBuilder.install();
    }

    public static void removeService(DeploymentUnit context) {
        final ServiceName serviceName = getServiceName(context.getName());
        final ServiceController<?> serviceController = context.getServiceRegistry().getService(serviceName);
        if (serviceController != null) {
            serviceController.setMode(Mode.REMOVE);
        }
    }

    /**
     * Get the OSGiDeploymentService name for a given context
     */
    public static ServiceName getServiceName(String contextName) {
        ServiceName deploymentServiceName = Services.deploymentUnitName(contextName);
        return OSGiDeploymentService.SERVICE_NAME_BASE.append(deploymentServiceName.getSimpleName());
    }

    /**
     * Install the Bundle associated with this deployment.
     *
     * @param context The start context
     */
    public synchronized void start(StartContext context) throws StartException {

        // Get the OSGi system context
        ServiceController<?> controller = context.getController();
        ServiceContainer serviceContainer = controller.getServiceContainer();

        // Make sure the Framework does not shut down when the last bundle gets removed
        ServiceController<?> contextController = serviceContainer.getService(FrameworkService.SERVICE_NAME);
        contextController.setMode(Mode.ACTIVE);

        log.tracef("Installing deployment: %s", deployment);
        try {
            boolean autoStart = deployment.isAutoStart();
            deployment.setAutoStart(false);
            BundleManager bundleManager = injectedBundleManager.getValue();
            bundleManager.installBundle(deployment);
            deployment.setAutoStart(autoStart);
        } catch (Throwable t) {
            throw new StartException("Failed to install deployment: " + deployment, t);
        }
    }

    /**
     * Uninstall the Bundle associated with this deployment.
     *
     * @param context The stop context.
     */
    public synchronized void stop(StopContext context) {
        log.tracef("Uninstalling deployment: %s", deployment);
        try {
            BundleManager bundleManager = injectedBundleManager.getValue();
            bundleManager.uninstallBundle(deployment);
        } catch (Throwable t) {
            log.errorf(t, "Failed to uninstall deployment: %s", deployment);
        }

        // [JBAS-8801] Undeployment leaks root deployment service
        // [TODO] remove this workaround
        ServiceName serviceName = Services.deploymentUnitName(context.getController().getName().getSimpleName());
        ServiceController<?> deploymentController = context.getController().getServiceContainer().getService(serviceName);
        if (deploymentController != null) {
            deploymentController.setMode(Mode.REMOVE);
        }
    }

    @Override
    public Deployment getValue() throws IllegalStateException {
        return deployment;
    }

    static class OSGiDeploymentListener extends AbstractServiceListener<Deployment> {

        private final Set<Deployment> startedDeployments = new CopyOnWriteArraySet<Deployment>();
        private final Set<Deployment> pendingDeployments = new CopyOnWriteArraySet<Deployment>();

        @Override
        public void listenerAdded(ServiceController<? extends Deployment> controller) {
            pendingDeployments.add(controller.getValue());
        }

        @Override
        public void serviceStarted(ServiceController<? extends Deployment> controller) {
            log.debugf("OSGiDeploymentService started: %s", controller);
            startedDeployments.add(controller.getValue());
            processDeployment(controller);
        }

        @Override
        public void serviceFailed(ServiceController<? extends Deployment> controller, StartException reason) {
            log.errorf(reason, "OSGiDeploymentService failed: %s", controller);
            processDeployment(controller);
        }

        private void processDeployment(ServiceController<? extends Deployment> controller) {

            controller.removeListener(this);
            Set<Deployment> bundlesToStart = null;

            synchronized (this) {
                pendingDeployments.remove(controller.getValue());
                if (pendingDeployments.isEmpty()) {
                    bundlesToStart = new HashSet<Deployment>(startedDeployments);
                    startedDeployments.clear();
                }
            }

            if (bundlesToStart != null) {
                ServiceContainer serviceContainer = controller.getServiceContainer();
                PackageAdmin packageAdmin = PackageAdminService.getServiceValue(serviceContainer);
                StartLevel startLevel = StartLevelService.getServiceValue(serviceContainer);
                for (Deployment dep : bundlesToStart) {
                    Bundle bundle = dep.getAttachment(Bundle.class);
                    if (packageAdmin.getBundleType(bundle) != PackageAdmin.BUNDLE_TYPE_FRAGMENT) {

                        boolean autoStart = dep.isAutoStart();

                        // Obtain the autoStart properties from the initiating deployment
                        // If this call is not a result of BundleContext.installBundle(...)
                        // there won't be an {@link InstallBundleInitiatorService}
                        String contextName = DeploymentHolderService.getContextName(dep);
                        ServiceName serviceName = DeploymentHolderService.getServiceName(contextName);
                        ServiceController<?> holderService = serviceContainer.getService(serviceName);
                        if (holderService != null) {
                            Deployment initiatingDeployment = (Deployment) holderService.getValue();
                            autoStart = initiatingDeployment.isAutoStart();
                            Integer startlevel = initiatingDeployment.getStartLevel();
                            if (startlevel != null)
                                startLevel.setBundleStartLevel(bundle, startlevel);
                        }

                        if (autoStart) {
                            log.tracef("Starting bundle: %s", bundle);
                            try {
                                bundle.start();
                            } catch (BundleException ex) {
                                log.errorf(ex, "Cannot start bundle: %s", bundle);
                            }
                        }
                    }
                }
            }
        }
    }
}
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