| #ifndef QPID_MESSAGING_SESSION_H |
| #define QPID_MESSAGING_SESSION_H |
| |
| /* |
| * |
| * 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 "qpid/messaging/ImportExport.h" |
| |
| #include "qpid/messaging/exceptions.h" |
| #include "qpid/messaging/Duration.h" |
| #include "qpid/messaging/Handle.h" |
| |
| #include <string> |
| |
| namespace qpid { |
| namespace messaging { |
| |
| #ifndef SWIG |
| template <class> class PrivateImplRef; |
| #endif |
| class Address; |
| class Connection; |
| class Message; |
| class Sender; |
| class Receiver; |
| class SessionImpl; |
| |
| /** \ingroup messaging |
| * A session represents a distinct 'conversation' which can involve |
| * sending and receiving messages to and from different addresses. |
| */ |
| class QPID_MESSAGING_CLASS_EXTERN Session : public qpid::messaging::Handle<SessionImpl> |
| { |
| public: |
| QPID_MESSAGING_EXTERN Session(SessionImpl* impl = 0); |
| QPID_MESSAGING_EXTERN Session(const Session&); |
| QPID_MESSAGING_EXTERN ~Session(); |
| QPID_MESSAGING_EXTERN Session& operator=(const Session&); |
| |
| /** |
| * Closes a session and all associated senders and receivers. An |
| * opened session should be closed before the last handle to it |
| * goes out of scope. All a connections sessions can be closed by |
| * a call to Connection::close(). |
| */ |
| QPID_MESSAGING_EXTERN void close(); |
| |
| /** |
| * Commits the sessions transaction. |
| * |
| * @exception TransactionAborted if the original session is lost |
| * forcing an automatic rollback. |
| */ |
| QPID_MESSAGING_EXTERN void commit(); |
| QPID_MESSAGING_EXTERN void rollback(); |
| |
| /** |
| * Acknowledges all outstanding messages that have been received |
| * by the application on this session. |
| * |
| * @param sync if true, blocks until the acknowledgement has been |
| * processed by the server |
| */ |
| QPID_MESSAGING_EXTERN void acknowledge(bool sync=false); |
| /** |
| * Acknowledges the specified message. |
| */ |
| QPID_MESSAGING_EXTERN void acknowledge(Message&, bool sync=false); |
| /** |
| * Acknowledges all message up to the specified message. |
| */ |
| QPID_MESSAGING_EXTERN void acknowledgeUpTo(Message&, bool sync=false); |
| /** |
| * Rejects the specified message. The broker does not redeliver a |
| * message that has been rejected. Once a message has been |
| * acknowledged, it can no longer be rejected. |
| */ |
| QPID_MESSAGING_EXTERN void reject(Message&); |
| /** |
| * Releases the specified message. The broker may redeliver the |
| * message. One a message has been acknowledged, it can no longer |
| * be released. |
| */ |
| QPID_MESSAGING_EXTERN void release(Message&); |
| |
| /** |
| * Request synchronisation with the server. |
| * |
| * @param block if true, this call will block until the server |
| * confirms completion of all pending operations; if false the |
| * call will request notification from the server but will return |
| * before receiving it. |
| */ |
| QPID_MESSAGING_EXTERN void sync(bool block=true); |
| |
| /** |
| * Returns the total number of messages received and waiting to be |
| * fetched by all Receivers belonging to this session. This is the |
| * total number of available messages across all receivers on this |
| * session. |
| */ |
| QPID_MESSAGING_EXTERN uint32_t getReceivable(); |
| /** |
| * Returns a count of the number of messages received this session |
| * that have been acknowledged, but for which that acknowledgement |
| * has not yet been confirmed as processed by the server. |
| */ |
| QPID_MESSAGING_EXTERN uint32_t getUnsettledAcks(); |
| /** |
| * Retrieves the receiver for the next available message. If there |
| * are no available messages at present the call will block for up |
| * to the specified timeout waiting for one to arrive. Returns |
| * true if a message was available at the point of return, in |
| * which case the passed in receiver reference will be set to the |
| * receiver for that message or false if no message was available. |
| */ |
| QPID_MESSAGING_EXTERN bool nextReceiver(Receiver&, Duration timeout=Duration::FOREVER); |
| /** |
| * Returns the receiver for the next available message. If there |
| * are no available messages at present the call will block for up |
| * to the specified timeout waiting for one to arrive. |
| * |
| * @exception Receiver::NoMessageAvailable if no message became |
| * available in time. |
| */ |
| QPID_MESSAGING_EXTERN Receiver nextReceiver(Duration timeout=Duration::FOREVER); |
| |
| /** |
| * Create a new sender through which messages can be sent to the |
| * specified address. |
| * |
| * @exception ResolutionError if there is an error in resolving |
| * the address |
| */ |
| QPID_MESSAGING_EXTERN Sender createSender(const Address& address); |
| /** |
| * Create a new sender through which messages can be sent to the |
| * specified address. |
| * |
| * @exception ResolutionError if there is an error in resolving |
| * the address |
| * |
| * @exception MalformedAddress if the syntax of address is not |
| * valid |
| */ |
| QPID_MESSAGING_EXTERN Sender createSender(const std::string& address); |
| |
| /** |
| * Create a new receiver through which messages can be received |
| * from the specified address. |
| * |
| * @exception ResolutionError if there is an error in resolving |
| * the address |
| */ |
| QPID_MESSAGING_EXTERN Receiver createReceiver(const Address& address); |
| /** |
| * Create a new receiver through which messages can be received |
| * from the specified address. |
| * |
| * @exception ResolutionError if there is an error in resolving |
| * the address |
| * |
| * @exception MalformedAddress if the syntax of address is not |
| * valid |
| */ |
| QPID_MESSAGING_EXTERN Receiver createReceiver(const std::string& address); |
| |
| /** |
| * Returns the sender with the specified name. |
| * @exception KeyError if there is none for that name. |
| */ |
| QPID_MESSAGING_EXTERN Sender getSender(const std::string& name) const; |
| /** |
| * Returns the receiver with the specified name. |
| * @exception KeyError if there is none for that name. |
| */ |
| QPID_MESSAGING_EXTERN Receiver getReceiver(const std::string& name) const; |
| /** |
| * Returns a handle to the connection this session is associated |
| * with. |
| */ |
| QPID_MESSAGING_EXTERN Connection getConnection() const; |
| |
| /** |
| * @returns true if the session has been rendered invalid by some |
| * exception, false if it is valid for use. |
| */ |
| QPID_MESSAGING_EXTERN bool hasError(); |
| /** |
| * If the session has been rendered invalid by some exception, |
| * this method will result in that exception being thrown on |
| * calling this method. |
| */ |
| QPID_MESSAGING_EXTERN void checkError(); |
| |
| #ifndef SWIG |
| private: |
| friend class qpid::messaging::PrivateImplRef<Session>; |
| #endif |
| }; |
| }} // namespace qpid::messaging |
| |
| #endif /*!QPID_MESSAGING_SESSION_H*/ |