1 /* Copyright (c) 2008, 2021, Oracle and/or its affiliates. 2 3 This program is free software; you can redistribute it and/or modify 4 it under the terms of the GNU General Public License, version 2.0, 5 as published by the Free Software Foundation. 6 7 This program is also distributed with certain software (including 8 but not limited to OpenSSL) that is licensed under separate terms, 9 as designated in a particular file or component or in included license 10 documentation. The authors of MySQL hereby grant you an additional 11 permission to link the program and your derivative works with the 12 separately licensed software that they have included with MySQL. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License, version 2.0, for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program; if not, write to the Free Software 21 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */ 22 23 #ifndef DICT_TAKEOVER_HPP 24 #define DICT_TAKEOVER_HPP 25 26 #include "SignalData.hpp" 27 28 #define JAM_FILE_ID 68 29 30 31 // see comments in Dbdict.hpp 32 33 class DictTakeoverReq { 34 friend class Dbdict; 35 public: 36 STATIC_CONST( SignalLength = 1 ); 37 STATIC_CONST( GSN = GSN_DICT_TAKEOVER_REQ ); 38 private: 39 Uint32 senderRef; 40 }; 41 42 class DictTakeoverConf { 43 friend class Dbdict; 44 public: 45 STATIC_CONST( SignalLength = 10 ); 46 STATIC_CONST( GSN = GSN_DICT_TAKEOVER_CONF ); 47 private: 48 Uint32 senderRef; 49 Uint32 clientRef; 50 Uint32 trans_key; 51 Uint32 trans_state; 52 Uint32 op_count; 53 union 54 { 55 Uint32 rollforward_op; // Preferred starting point for rollforward 56 Uint32 lowest_op; // Next operation to be ended (removed) 57 }; 58 union { 59 Uint32 rollforward_op_state; 60 Uint32 lowest_op_state; 61 }; 62 union { 63 Uint32 rollback_op; // Preferred starting point for rollback 64 Uint32 highest_op; // Last parsed operation 65 }; 66 union { 67 Uint32 rollback_op_state; 68 Uint32 highest_op_state; 69 }; 70 // Highest/lowest op is needed if new master is missing one operation 71 union { 72 Uint32 lowest_op_impl_req_gsn; 73 Uint32 highest_op_impl_req_gsn; 74 }; 75 }; 76 77 struct DictTakeoverRef { 78 STATIC_CONST( SignalLength = 3 ); 79 STATIC_CONST( GSN = GSN_DICT_TAKEOVER_REF ); 80 81 Uint32 senderRef; 82 union { Uint32 masterRef, senderData; }; 83 Uint32 errorCode; 84 enum ErrorCode 85 { 86 NoError = 0, 87 NoTransaction = 1, 88 NF_FakeErrorREF = 2 89 }; 90 }; 91 92 93 94 #undef JAM_FILE_ID 95 96 #endif 97