| /* |
| * 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. |
| */ |
| |
| #include "PooledSession.h" |
| #include "SessionPool.h" |
| #include "ResourceLifecycleManager.h" |
| #include <cms/CMSException.h> |
| |
| #include <decaf/util/Set.h> |
| #include <decaf/util/Iterator.h> |
| |
| #include <memory> |
| |
| using namespace cms; |
| using namespace decaf::util; |
| using namespace activemq::cmsutil; |
| |
| /** |
| * A catch-all that throws an CMSException. |
| */ |
| #define CMSTEMPLATE_CATCHALL() \ |
| catch( cms::CMSException& ex ){ \ |
| throw; \ |
| } catch( ... ){ \ |
| throw CMSException("caught unknown exception", NULL); \ |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| PooledSession::PooledSession(SessionPool* pool, cms::Session* session) : |
| pool(pool), session(session), producerCache(), consumerCache() { |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| PooledSession::~PooledSession() { |
| |
| // Destroy cached producers. |
| std::auto_ptr<Iterator<CachedProducer*> > producers(producerCache.values().iterator()); |
| while (producers->hasNext()) { |
| try { |
| delete producers->next(); |
| } catch (...) {} |
| } |
| |
| // Destroy cached consumers. |
| std::auto_ptr<Iterator<CachedConsumer*> > consumers(consumerCache.values().iterator()); |
| while (consumers->hasNext()) { |
| try { |
| delete consumers->next(); |
| } catch (...) {} |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void PooledSession::close() { |
| |
| if (pool != NULL) { |
| pool->returnSession(this); |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| cms::QueueBrowser* PooledSession::createBrowser(const cms::Queue* queue) { |
| return session->createBrowser(queue); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| cms::QueueBrowser* PooledSession::createBrowser(const cms::Queue* queue, const std::string& selector) { |
| return session->createBrowser(queue, selector); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| cms::MessageProducer* PooledSession::createCachedProducer(const cms::Destination* destination) { |
| |
| try { |
| |
| if (destination == NULL) { |
| throw CMSException("destination is NULL", NULL); |
| } |
| |
| std::string key = getUniqueDestName(destination); |
| |
| // Check the cache - add it if necessary. |
| CachedProducer* cachedProducer = NULL; |
| try { |
| cachedProducer = producerCache.get(key); |
| } catch (decaf::util::NoSuchElementException& e) { |
| |
| // No producer exists for this destination - start by creating |
| // a new producer resource. |
| cms::MessageProducer* p = session->createProducer(destination); |
| |
| // Add the producer resource to the resource lifecycle manager. |
| pool->getResourceLifecycleManager()->addMessageProducer(p); |
| |
| // Create the cached producer wrapper. |
| cachedProducer = new CachedProducer(p); |
| |
| // Add it to the cache. |
| producerCache.put(key, cachedProducer); |
| } |
| |
| return cachedProducer; |
| } |
| CMSTEMPLATE_CATCHALL() |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| cms::MessageConsumer* PooledSession::createCachedConsumer(const cms::Destination* destination, const std::string& selector, bool noLocal) { |
| |
| try { |
| |
| if (destination == NULL) { |
| throw CMSException("destination is NULL", NULL); |
| } |
| |
| // Append the selector and noLocal flag onto the key. |
| std::string key = getUniqueDestName(destination); |
| key += "s="; |
| key += selector; |
| key += ",nl="; |
| key += (noLocal ? "t" : "f"); |
| |
| // Check the cache - add it if necessary. |
| CachedConsumer* cachedConsumer = NULL; |
| try { |
| cachedConsumer = consumerCache.get(key); |
| } catch (decaf::util::NoSuchElementException& e) { |
| |
| // No producer exists for this destination - start by creating |
| // a new consumer resource. |
| cms::MessageConsumer* c = session->createConsumer(destination, selector, noLocal); |
| |
| // Add the consumer resource to the resource lifecycle manager. |
| pool->getResourceLifecycleManager()->addMessageConsumer(c); |
| |
| // Create the cached consumer wrapper. |
| cachedConsumer = new CachedConsumer(c); |
| |
| // Add it to the cache. |
| consumerCache.put(key, cachedConsumer); |
| } |
| |
| return cachedConsumer; |
| } |
| CMSTEMPLATE_CATCHALL() |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| std::string PooledSession::getUniqueDestName(const cms::Destination* dest) { |
| |
| std::string destName = "["; |
| const cms::Queue* queue = dynamic_cast<const cms::Queue*>(dest); |
| if (queue != NULL) { |
| destName += "q:" + queue->getQueueName(); |
| } else { |
| const cms::Topic* topic = dynamic_cast<const cms::Topic*>(dest); |
| if (topic != NULL) { |
| destName += "t:" + topic->getTopicName(); |
| } |
| } |
| |
| destName += "]"; |
| |
| return destName; |
| } |