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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/client/Connection.h" 00026 #include "qpid/client/ConnectionSettings.h" 00027 #include "qpid/Exception.h" 00028 #include "qpid/client/AsyncSession.h" 00029 #include "qpid/sys/Monitor.h" 00030 #include "qpid/client/ClientImportExport.h" 00031 #include <vector> 00032 00033 namespace qpid { 00034 namespace client { 00035 00036 struct CannotConnectException : qpid::Exception 00037 { 00038 CannotConnectException(const std::string& m) : qpid::Exception(m) {} 00039 }; 00040 00044 class FailoverManager 00045 { 00046 public: 00051 struct Command 00052 { 00063 virtual void execute(AsyncSession& session, bool isRetry) = 0; 00064 virtual ~Command() {} 00065 }; 00066 00067 struct ReconnectionStrategy 00068 { 00076 virtual void editUrlList(std::vector<Url>& urls) = 0; 00077 virtual ~ReconnectionStrategy() {} 00078 }; 00079 00088 QPID_CLIENT_EXTERN FailoverManager(const ConnectionSettings& settings, ReconnectionStrategy* strategy = 0); 00099 QPID_CLIENT_EXTERN Connection& connect(std::vector<Url> brokers = std::vector<Url>()); 00103 QPID_CLIENT_EXTERN Connection& getConnection(); 00107 QPID_CLIENT_EXTERN void close(); 00120 QPID_CLIENT_EXTERN void execute(Command&); 00121 private: 00122 enum State {IDLE, CONNECTING, CANT_CONNECT}; 00123 00124 qpid::sys::Monitor lock; 00125 Connection connection; 00126 ConnectionSettings settings; 00127 ReconnectionStrategy* strategy; 00128 State state; 00129 00130 void attempt(Connection&, ConnectionSettings settings, std::vector<Url> urls); 00131 void attempt(Connection&, ConnectionSettings settings); 00132 }; 00133 }} // namespace qpid::client 00134 00135 #endif