| /* |
| * 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.event.impl.jobs.config; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Reference; |
| import org.apache.felix.scr.annotations.ReferenceCardinality; |
| import org.apache.felix.scr.annotations.ReferencePolicy; |
| import org.apache.felix.scr.annotations.Service; |
| import org.apache.sling.event.impl.support.ResourceHelper; |
| |
| |
| /** |
| * The queue manager manages queue configurations. |
| */ |
| @Component |
| @Service(value=QueueConfigurationManager.class) |
| @Reference(referenceInterface=InternalQueueConfiguration.class, policy=ReferencePolicy.DYNAMIC, |
| cardinality=ReferenceCardinality.OPTIONAL_MULTIPLE, |
| bind="bindConfig", unbind="unbindConfig", updated="updateConfig") |
| public class QueueConfigurationManager { |
| |
| /** Empty configuration array. */ |
| private static final InternalQueueConfiguration[] EMPTY_CONFIGS = new InternalQueueConfiguration[0]; |
| |
| /** Configurations - ordered by service ranking. */ |
| private volatile InternalQueueConfiguration[] orderedConfigs = EMPTY_CONFIGS; |
| |
| /** All configurations. */ |
| private final List<InternalQueueConfiguration> configurations = new ArrayList<InternalQueueConfiguration>(); |
| |
| /** The main queue configuration. */ |
| @Reference |
| private MainQueueConfiguration mainQueueConfiguration; |
| |
| /** |
| * Add a new queue configuration. |
| * @param config A new queue configuration. |
| */ |
| protected void bindConfig(final InternalQueueConfiguration config) { |
| synchronized ( configurations ) { |
| configurations.add(config); |
| this.createConfigurationCache(); |
| } |
| } |
| |
| /** |
| * Remove a queue configuration. |
| * @param config The queue configuration. |
| */ |
| protected void unbindConfig(final InternalQueueConfiguration config) { |
| synchronized ( configurations ) { |
| configurations.remove(config); |
| this.createConfigurationCache(); |
| } |
| } |
| |
| /** |
| * Update a queue configuration. |
| * @param config The queue configuration. |
| */ |
| protected void updateConfig(final InternalQueueConfiguration config) { |
| // InternalQueueConfiguration does not implement modified atm, |
| // but we handle this case anyway |
| synchronized ( configurations ) { |
| this.createConfigurationCache(); |
| } |
| } |
| |
| /** |
| * Create the configurations cache used by clients. |
| */ |
| private void createConfigurationCache() { |
| if ( this.configurations.isEmpty() ) { |
| this.orderedConfigs = EMPTY_CONFIGS; |
| } else { |
| Collections.sort(configurations); |
| orderedConfigs = configurations.toArray(new InternalQueueConfiguration[configurations.size()]); |
| } |
| } |
| |
| /** |
| * Return all configurations. |
| * @return An array with all queue configurations except the main queue. Array might be empty. |
| */ |
| public InternalQueueConfiguration[] getConfigurations() { |
| return orderedConfigs; |
| } |
| |
| /** |
| * Get the configuration for the main queue. |
| * @return The configuration for the main queue. |
| */ |
| public InternalQueueConfiguration getMainQueueConfiguration() { |
| return this.mainQueueConfiguration.getMainConfiguration(); |
| } |
| |
| public static final class QueueInfo { |
| public InternalQueueConfiguration queueConfiguration; |
| public String queueName; |
| public String targetId; |
| |
| @Override |
| public String toString() { |
| return queueName; |
| } |
| |
| @Override |
| public int hashCode() { |
| return queueName.hashCode(); |
| } |
| |
| @Override |
| public boolean equals(final Object obj) { |
| if ( obj == this ) { |
| return true; |
| } |
| if ( obj instanceof QueueInfo ) { |
| return ((QueueInfo)obj).queueName.equals(this.queueName); |
| } |
| return false; |
| } |
| } |
| |
| /** |
| * Find the queue configuration for the job. |
| * This method only returns a configuration if one matches. |
| */ |
| public QueueInfo getQueueInfo(final String topic) { |
| final InternalQueueConfiguration[] configurations = this.getConfigurations(); |
| for(final InternalQueueConfiguration config : configurations) { |
| if ( config.isValid() ) { |
| final String qn = config.match(topic); |
| if ( qn != null ) { |
| final QueueInfo result = new QueueInfo(); |
| result.queueConfiguration = config; |
| result.queueName = ResourceHelper.filterName(qn); |
| |
| return result; |
| } |
| } |
| } |
| final QueueInfo result = new QueueInfo(); |
| result.queueConfiguration = this.mainQueueConfiguration.getMainConfiguration(); |
| result.queueName = result.queueConfiguration.getName(); |
| |
| return result; |
| } |
| } |