| /* |
| * 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.ace.scheduler; |
| |
| import java.util.Properties; |
| |
| import org.apache.ace.scheduler.constants.SchedulerConstants; |
| import org.apache.felix.dm.DependencyActivatorBase; |
| import org.apache.felix.dm.DependencyManager; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.Constants; |
| import org.osgi.framework.ServiceReference; |
| import org.osgi.service.cm.ConfigurationException; |
| import org.osgi.service.cm.ManagedService; |
| import org.osgi.service.log.LogService; |
| |
| /** |
| * Activator for the scheduler service. This activator will monitor <code>Runnable</code>s coming available, and if they |
| * are intended to be scheduled, gets the necessary information and passes that to the scheduler. |
| */ |
| public class Activator extends DependencyActivatorBase { |
| private Scheduler m_scheduler; |
| |
| public void init(BundleContext context, DependencyManager manager) throws Exception { |
| m_scheduler = new Scheduler(); |
| Properties props = new Properties(); |
| props.put(Constants.SERVICE_PID, SchedulerConstants.SCHEDULER_PID); |
| manager.add(createComponent() |
| .setInterface(ManagedService.class.getName(), props) |
| .setImplementation(m_scheduler) |
| .add(createServiceDependency() |
| .setService(LogService.class).setRequired(false)) |
| .add(createServiceDependency() |
| .setService(Runnable.class).setRequired(false) |
| .setAutoConfig(false) |
| .setCallbacks(this, "addRunnable", "addRunnable", "removeRunnable"))); |
| } |
| |
| public void destroy(BundleContext context, DependencyManager manager) throws Exception { |
| // do nothing |
| } |
| |
| /** |
| * Handler for both adding and updating runnable service registrations. |
| * |
| * @throws ConfigurationException |
| * Is thrown when the <code>SCHEDULER_RECIPE</code> contained in <code>ref</code>'s service dictionary |
| * cannot be parsed by the scheduler. |
| */ |
| public void addRunnable(ServiceReference<Runnable> ref, Runnable task) throws ConfigurationException { |
| String name = (String) ref.getProperty(SchedulerConstants.SCHEDULER_NAME_KEY); |
| if (name != null) { |
| String description = (String) ref.getProperty(SchedulerConstants.SCHEDULER_DESCRIPTION_KEY); |
| Object recipe = ref.getProperty(SchedulerConstants.SCHEDULER_RECIPE); |
| boolean recipeOverride = Boolean.valueOf((String) ref.getProperty(SchedulerConstants.SCHEDULER_RECIPE_OVERRIDE)).booleanValue(); |
| m_scheduler.addRunnable(name, task, description, recipe, recipeOverride); |
| } |
| } |
| |
| public synchronized void removeRunnable(ServiceReference<Runnable> ref, Runnable task) { |
| String name = (String) ref.getProperty(SchedulerConstants.SCHEDULER_NAME_KEY); |
| if (name != null) { |
| m_scheduler.removeRunnable(name); |
| } |
| } |
| } |