1 /* 2 Copyright (c) 2009, 2021, Oracle and/or its affiliates. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License, version 2.0, 6 as published by the Free Software Foundation. 7 8 This program is also distributed with certain software (including 9 but not limited to OpenSSL) that is licensed under separate terms, 10 as designated in a particular file or component or in included license 11 documentation. The authors of MySQL hereby grant you an additional 12 permission to link the program and your derivative works with the 13 separately licensed software that they have included with MySQL. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License, version 2.0, for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program; if not, write to the Free Software 22 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 23 */ 24 25 #ifndef NDBINFO_SCAN_NODES_H 26 #define NDBINFO_SCAN_NODES_H 27 28 #include "NdbInfoScanOperation.hpp" 29 30 #include "kernel/NodeBitmask.hpp" 31 32 /* 33 Scan implementation for retrieving rows from the NDB 34 data nodes. 35 */ 36 class NdbInfoScanNodes : public NdbInfoScanOperation { 37 public: 38 virtual int readTuples(); 39 virtual const class NdbInfoRecAttr* getValue(const char * anAttrName); 40 virtual const class NdbInfoRecAttr* getValue(Uint32 anAttrId); 41 virtual int execute(); 42 virtual int nextResult(); 43 44 NdbInfoScanNodes(const NdbInfo&, 45 class Ndb_cluster_connection*, 46 const NdbInfo::Table*, 47 Uint32 max_rows, Uint32 max_bytes, 48 Uint32 max_nodes); 49 int init(Uint32 id); 50 51 virtual ~NdbInfoScanNodes(); 52 private: 53 bool execDBINFO_TRANSID_AI(const struct SimpleSignal * signal); 54 bool execDBINFO_SCANCONF(const struct SimpleSignal * signal); 55 bool execDBINFO_SCANREF(const struct SimpleSignal * signal, int& error_code); 56 int sendDBINFO_SCANREQ(); 57 58 int receive(void); 59 bool find_next_node(); 60 61 const NdbInfo& m_info; 62 enum State { Undefined, Initial, Prepared, 63 MoreData, End, Error } m_state; 64 class Ndb_cluster_connection* m_connection; 65 class SignalSender* m_signal_sender; 66 const NdbInfo::Table* m_table; 67 NdbInfoRecAttrCollection m_recAttrs; 68 Vector<Uint32> m_cursor; 69 Uint32 m_node_id; 70 Uint32 m_transid0; 71 Uint32 m_transid1; 72 Uint32 m_result_ref; 73 Uint32 m_max_rows; 74 Uint32 m_max_bytes; 75 Uint32 m_result_data; 76 Uint32 m_rows_received; 77 Uint32 m_rows_confirmed; 78 Uint32 m_nodes; // Number of nodes scanned 79 const Uint32 m_max_nodes; // Max number of nodes to scan 80 NodeBitmask m_nodes_to_scan; 81 }; 82 83 84 #endif 85