| /* |
| * 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. |
| */ |
| |
| #ifndef _ACTIVEMQ_TRANSPORT_FAILOVER_BACKUPTRANSPORTPOOL_H_ |
| #define _ACTIVEMQ_TRANSPORT_FAILOVER_BACKUPTRANSPORTPOOL_H_ |
| |
| #include <activemq/util/Config.h> |
| #include <activemq/threads/CompositeTask.h> |
| #include <activemq/threads/CompositeTaskRunner.h> |
| #include <activemq/transport/failover/CloseTransportsTask.h> |
| #include <activemq/transport/failover/BackupTransport.h> |
| #include <activemq/transport/failover/URIPool.h> |
| |
| #include <decaf/lang/Pointer.h> |
| #include <decaf/io/IOException.h> |
| #include <decaf/util/LinkedList.h> |
| |
| namespace activemq { |
| namespace transport { |
| namespace failover { |
| |
| using decaf::lang::Pointer; |
| using decaf::util::LinkedList; |
| using activemq::threads::CompositeTaskRunner; |
| |
| class BackupTransportPoolImpl; |
| class FailoverTransport; |
| |
| class AMQCPP_API BackupTransportPool : public activemq::threads::CompositeTask { |
| private: |
| |
| friend class BackupTransport; |
| |
| BackupTransportPoolImpl* impl; |
| |
| FailoverTransport* parent; |
| Pointer<CompositeTaskRunner> taskRunner; |
| Pointer<CloseTransportsTask> closeTask; |
| Pointer<URIPool> uriPool; |
| Pointer<URIPool> updates; |
| Pointer<URIPool> priorityUriPool; |
| volatile int backupPoolSize; |
| volatile bool enabled; |
| volatile int maxReconnectDelay; |
| |
| public: |
| |
| BackupTransportPool(FailoverTransport* parent, |
| const Pointer<CompositeTaskRunner> taskRunner, |
| const Pointer<CloseTransportsTask> closeTask, |
| const Pointer<URIPool> uriPool, |
| const Pointer<URIPool> updates, |
| const Pointer<URIPool> priorityUriPool); |
| |
| BackupTransportPool(FailoverTransport* parent, |
| int backupPoolSize, |
| const Pointer<CompositeTaskRunner> taskRunner, |
| const Pointer<CloseTransportsTask> closeTask, |
| const Pointer<URIPool> uriPool, |
| const Pointer<URIPool> updates, |
| const Pointer<URIPool> priorityUriPool); |
| |
| virtual ~BackupTransportPool(); |
| |
| /** |
| * Closes down the pool and destroys any Backups contained in the pool. |
| */ |
| void close(); |
| |
| /** |
| * Return true if we don't currently have enough Connected Transports |
| */ |
| virtual bool isPending() const; |
| |
| /** |
| * Get a Connected Transport from the pool of Backups if any are present, |
| * otherwise it return a NULL Pointer. |
| * |
| * @return Pointer to a Connected Transport or NULL |
| */ |
| Pointer<BackupTransport> getBackup(); |
| |
| /** |
| * Connect to a Backup Broker if we haven't already connected to the max |
| * number of Backups. |
| */ |
| virtual bool iterate(); |
| |
| /** |
| * Gets the Max number of Backups this Task will create. |
| * @return the max number of active BackupTransports that will be created. |
| */ |
| int getBackupPoolSize() const { |
| return this->backupPoolSize; |
| } |
| |
| /** |
| * Sets the Max number of Backups this Task will create. |
| * @param size - the max number of active BackupTransports that will be created. |
| */ |
| void setBackupPoolSize(int size) { |
| this->backupPoolSize = size; |
| } |
| |
| /** |
| * Gets if the backup Transport Pool has been enabled or not, when not enabled |
| * no backups are created and any that were are destroyed. |
| * |
| * @return true if enable. |
| */ |
| bool isEnabled() const { |
| return this->enabled; |
| } |
| |
| /** |
| * Sets if this Backup Transport Pool is enabled. When not enabled no Backups |
| * are created and any that were are destroyed. |
| * |
| * @param value - true to enable backup creation, false to disable. |
| */ |
| void setEnabled(bool value); |
| |
| /** |
| * Returns true if there is a Backup in the pool that's on the priority |
| * backups list. |
| * |
| * @return true if there is a priority backup available. |
| */ |
| bool isPriorityBackupAvailable() const; |
| |
| private: |
| |
| // The backups report their failure to the pool, the pool removes them |
| // from the list and returns their URIs to the URIPool, and then adds |
| // the internal transport to the close transport's task for cleanup. |
| void onBackupTransportFailure(BackupTransport* failedTransport); |
| |
| Pointer<Transport> createTransport(const decaf::net::URI& location) const; |
| |
| }; |
| |
| }}} |
| |
| #endif /*_ACTIVEMQ_TRANSPORT_FAILOVER_BACKUPTRANSPORTPOOL_H_*/ |