| /* |
| * |
| * 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.qpid.server.configuration.plugins; |
| |
| import org.apache.commons.configuration.Configuration; |
| import org.apache.commons.configuration.ConfigurationException; |
| |
| import org.apache.qpid.server.plugins.PluginManager; |
| import org.apache.qpid.server.registry.ApplicationRegistry; |
| import org.apache.qpid.slowconsumerdetection.policies.SlowConsumerPolicyPlugin; |
| import org.apache.qpid.slowconsumerdetection.policies.SlowConsumerPolicyPluginFactory; |
| |
| import java.util.Arrays; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| |
| public class SlowConsumerDetectionQueueConfiguration extends ConfigurationPlugin |
| { |
| private SlowConsumerPolicyPlugin _policyPlugin; |
| |
| public static class SlowConsumerDetectionQueueConfigurationFactory implements ConfigurationPluginFactory |
| { |
| public ConfigurationPlugin newInstance(String path, Configuration config) throws ConfigurationException |
| { |
| SlowConsumerDetectionQueueConfiguration slowConsumerConfig = new SlowConsumerDetectionQueueConfiguration(); |
| slowConsumerConfig.setConfiguration(path, config); |
| return slowConsumerConfig; |
| } |
| |
| public List<String> getParentPaths() |
| { |
| return Arrays.asList( |
| "virtualhosts.virtualhost.queues.slow-consumer-detection", |
| "virtualhosts.virtualhost.queues.queue.slow-consumer-detection", |
| "virtualhosts.virtualhost.topics.slow-consumer-detection", |
| "virtualhosts.virtualhost.topics.topic.slow-consumer-detection"); |
| } |
| } |
| |
| public String[] getElementsProcessed() |
| { |
| return new String[]{"messageAge", |
| "depth", |
| "messageCount"}; |
| } |
| |
| public long getMessageAge() |
| { |
| return getLongValue("messageAge"); |
| } |
| |
| public long getDepth() |
| { |
| return getLongValue("depth"); |
| } |
| |
| public long getMessageCount() |
| { |
| return getLongValue("messageCount"); |
| } |
| |
| public SlowConsumerPolicyPlugin getPolicy() |
| { |
| return _policyPlugin; |
| } |
| |
| @Override |
| public void validateConfiguration() throws ConfigurationException |
| { |
| PluginManager pluginManager; |
| try |
| { |
| pluginManager = ApplicationRegistry.getInstance().getPluginManager(); |
| } |
| catch (IllegalStateException ise) |
| { |
| // We see this happen during shutdown due to asynchronous reconfig performed IO threads |
| // running at the same time as the shutdown handler. |
| _policyPlugin = null; |
| return; |
| } |
| |
| if (!containsPositiveLong("messageAge") && |
| !containsPositiveLong("depth") && |
| !containsPositiveLong("messageCount")) |
| { |
| throw new ConfigurationException("At least one configuration property" + |
| "('messageAge','depth' or 'messageCount') must be specified."); |
| } |
| |
| SlowConsumerDetectionPolicyConfiguration policyConfig = getConfiguration(SlowConsumerDetectionPolicyConfiguration.class.getName()); |
| Map<String, SlowConsumerPolicyPluginFactory> factories = pluginManager.getSlowConsumerPlugins(); |
| |
| if (policyConfig == null) |
| { |
| throw new ConfigurationException("No Slow Consumer Policy specified. Known Policies:" + factories.keySet()); |
| } |
| |
| if (_logger.isDebugEnabled()) |
| { |
| Iterator<?> keys = policyConfig.getConfig().getKeys(); |
| |
| while (keys.hasNext()) |
| { |
| String key = (String) keys.next(); |
| |
| _logger.debug("Policy Keys:" + key); |
| } |
| |
| } |
| |
| SlowConsumerPolicyPluginFactory<SlowConsumerPolicyPlugin> pluginFactory = factories.get(policyConfig.getPolicyName().toLowerCase()); |
| |
| if (pluginFactory == null) |
| { |
| throw new ConfigurationException("Unknown Slow Consumer Policy specified:" + policyConfig.getPolicyName() + " Known Policies:" + factories.keySet()); |
| } |
| |
| _policyPlugin = pluginFactory.newInstance(policyConfig); |
| |
| // Debug the creation of this Config |
| _logger.debug(this); |
| } |
| |
| public String formatToString() |
| { |
| StringBuilder sb = new StringBuilder(); |
| if (getMessageAge() > 0) |
| { |
| sb.append("Age:").append(getMessageAge()).append(":"); |
| } |
| if (getDepth() > 0) |
| { |
| sb.append("Depth:").append(getDepth()).append(":"); |
| } |
| if (getMessageCount() > 0) |
| { |
| sb.append("Count:").append(getMessageCount()).append(":"); |
| } |
| |
| sb.append("Policy[").append(getPolicy()).append("]"); |
| return sb.toString(); |
| } |
| } |