| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.sling.installer.factories.subsystems.impl; |
| |
| import org.apache.sling.installer.api.tasks.ChangeStateTask; |
| import org.apache.sling.installer.api.tasks.InstallTask; |
| import org.apache.sling.installer.api.tasks.InstallationContext; |
| import org.apache.sling.installer.api.tasks.ResourceState; |
| import org.apache.sling.installer.api.tasks.TaskResource; |
| import org.apache.sling.installer.api.tasks.TaskResourceGroup; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.ServiceReference; |
| import org.osgi.service.subsystem.Subsystem; |
| |
| /** |
| * Update subsystem by uninstalling and installing it. |
| */ |
| public class UpdateSubsystemTask extends InstallTask { |
| |
| private static final String INSTALL_ORDER = "54-"; |
| |
| private final Subsystem rootSubsystem; |
| |
| private final ServiceReference<Subsystem> subsystemReference; |
| |
| private final BundleContext bundleContext; |
| |
| public UpdateSubsystemTask(final TaskResourceGroup grp, |
| final BundleContext bundleContext, |
| final ServiceReference<Subsystem> ref, |
| final Subsystem rootSubsystem) { |
| super(grp); |
| this.bundleContext = bundleContext; |
| this.subsystemReference = ref; |
| this.rootSubsystem = rootSubsystem; |
| } |
| |
| @Override |
| public void execute(final InstallationContext ctx) { |
| final TaskResource tr = this.getResource(); |
| ctx.log("Updating subsystem from {}", tr); |
| |
| Subsystem subsystem = null; |
| try { |
| subsystem = this.bundleContext.getService(this.subsystemReference); |
| if ( subsystem != null ) { |
| subsystem.stop(); |
| subsystem.uninstall(); |
| ctx.addTaskToCurrentCycle(new InstallSubsystemTask(this.getResourceGroup(), this.rootSubsystem)); |
| } else { |
| ctx.log("Unable to update subsystem {}.", tr); |
| ctx.addTaskToCurrentCycle(new ChangeStateTask(this.getResourceGroup(), ResourceState.IGNORED)); |
| } |
| } finally { |
| if ( subsystem != null ) { |
| this.bundleContext.ungetService(this.subsystemReference); |
| } |
| } |
| } |
| |
| @Override |
| public String getSortKey() { |
| return INSTALL_ORDER + getResource().getURL(); |
| } |
| } |