qpid/client/FailoverManager.h Source File

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qpid/client/FailoverManager.h
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    00001 #ifndef QPID_CLIENT_FAILOVERMANAGER_H
    00002 #define QPID_CLIENT_FAILOVERMANAGER_H
    00003
    00004 /*
    00005  *
    00006  * Licensed to the Apache Software Foundation (ASF) under one
    00007  * or more contributor license agreements.  See the NOTICE file
    00008  * distributed with this work for additional information
    00009  * regarding copyright ownership.  The ASF licenses this file
    00010  * to you under the Apache License, Version 2.0 (the
    00011  * "License"); you may not use this file except in compliance
    00012  * with the License.  You may obtain a copy of the License at
    00013  *
    00014  *   http://www.apache.org/licenses/LICENSE-2.0
    00015  *
    00016  * Unless required by applicable law or agreed to in writing,
    00017  * software distributed under the License is distributed on an
    00018  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    00019  * KIND, either express or implied.  See the License for the
    00020  * specific language governing permissions and limitations
    00021  * under the License.
    00022  *
    00023  */
    00024
    00025 #include "qpid/Exception.h"
    00026 #include "qpid/client/AsyncSession.h"
    00027 #include "qpid/client/ClientImportExport.h"
    00028 #include "qpid/client/Connection.h"
    00029 #include "qpid/client/ConnectionSettings.h"
    00030 #include "qpid/client/FailoverListener.h"
    00031 #include "qpid/sys/Monitor.h"
    00032 #include <vector>
    00033
    00034 namespace qpid {
    00035 namespace client {
    00036
    00037 struct CannotConnectException : qpid::Exception
    00038 {
    00039     CannotConnectException(const std::string& m) : qpid::Exception(m) {}
    00040 };
    00041
    00045 class QPID_CLIENT_CLASS_EXTERN FailoverManager
    00046 {
    00047   public:
    00052     struct Command
    00053     {
    00064         virtual void execute(AsyncSession& session, bool isRetry) = 0;
    00065         virtual ~Command() {}
    00066     };
    00067
    00068     struct ReconnectionStrategy
    00069     {
    00077         virtual void editUrlList(std::vector<Url>&  urls) = 0;
    00078         virtual ~ReconnectionStrategy() {}
    00079     };
    00080
    00089     QPID_CLIENT_EXTERN FailoverManager(const ConnectionSettings& settings, ReconnectionStrategy* strategy = 0);
    00100     QPID_CLIENT_EXTERN Connection& connect(std::vector<Url> brokers = std::vector<Url>());
    00104     QPID_CLIENT_EXTERN Connection& getConnection();
    00108     QPID_CLIENT_EXTERN void close();
    00121     QPID_CLIENT_EXTERN void execute(Command&);
    00122   private:
    00123     enum State {IDLE, CONNECTING, CANT_CONNECT};
    00124
    00125     qpid::sys::Monitor lock;
    00126     Connection connection;
    00127     std::auto_ptr<FailoverListener> failoverListener;
    00128     ConnectionSettings settings;
    00129     ReconnectionStrategy* strategy;
    00130     State state;
    00131
    00132     void attempt(Connection&, ConnectionSettings settings, std::vector<Url> urls);
    00133     void attempt(Connection&, ConnectionSettings settings);
    00134 };
    00135 }} // namespace qpid::client
    00136
    00137 #endif