97 lines
3.8 KiB
C++
97 lines
3.8 KiB
C++
/* Copyright (c) 2018, 2021, Alibaba and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL/PolarDB-X Engine hereby grant you an
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additional permission to link the program and your derivative works with the
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separately licensed software that they have included with
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MySQL/PolarDB-X Engine.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef BL_CONSENSUS_LOG_INCLUDE
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#define BL_CONSENSUS_LOG_INCLUDE
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#include "consensus_log_manager.h"
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// #include "my_global.h"
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#ifdef NORMANDY_CLUSTER
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#include "../cluster/consensus/paxos.h"
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#include "../cluster/consensus/paxos_log.h"
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#include "../cluster/consensus/paxos_server.h"
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#include <memory>
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struct ConsensusStateChange
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{
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alisql::Paxos::StateType state;
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uint64 term;
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uint64 index;
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};
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class BLConsensusLog : public alisql::PaxosLog{
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public :
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enum Consensus_Log_Op_Type
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{
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NORMAL = 0,
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NOOP = 1,
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CONFIGCHANGE = 7,
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MOCK = 8,
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LARGETRX = 11,
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LARGETRXEND = 12,
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UNCERTAIN = 10
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};
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BLConsensusLog();
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virtual ~BLConsensusLog();
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void init(uint64 fake_start_index_arg, ConsensusLogManager *consensus_log_manager_arg);
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virtual int getEntry(uint64_t logIndex, alisql::LogEntry &entry, bool fastFail, uint64_t serverId);
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virtual int getEntry(uint64_t logIndex, alisql::LogEntry &entry, bool fastFail);
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virtual const alisql::LogEntry *getEntry(uint64_t logIndex __attribute__((unused)), bool fastfail __attribute__((unused)) = false) { return NULL; }
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virtual uint64_t getLeftSize(uint64_t startLogIndex);
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virtual bool getLeftSize(uint64_t startLogIndexi, uint64_t maxPacketSize);
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virtual int getEmptyEntry(alisql::LogEntry &entry);
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virtual uint64_t getLastLogIndex();
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virtual uint64_t getLastCachedLogIndex();
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virtual uint64_t getSafeLastLogIndex();
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virtual uint64_t appendWithCheck(const alisql::LogEntry &entry);
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virtual uint64_t append(const alisql::LogEntry &entry);
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virtual uint64_t append(const ::google::protobuf::RepeatedPtrField<alisql::LogEntry> &entries);
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virtual void truncateBackward(uint64_t firstIndex);
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virtual void truncateForward(uint64_t lastIndex);
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virtual int getMetaData(const std::string &key, uint64_t *value);
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virtual int getMetaData(const std::string &key, std::string &value);
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virtual int setMetaData(const std::string &key, const uint64_t value);
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virtual int setMetaData(const std::string &key, const std::string &value);
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virtual void setTerm(uint64_t term);
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virtual uint64_t getLength();
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virtual bool isStateMachineHealthy();
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uint64 getCurrentTerm() { return currentTerm_; }
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static void packLogEntry(uchar* buffer, size_t buf_size, uint64 term, uint64 index, Consensus_Log_Op_Type entry_type, alisql::LogEntry& log_entry);
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private:
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uint64 mock_start_index; // before this index, all log entry should be mocked
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ConsensusLogManager *consensusLogManager_; // ConsensusLog Operation detail
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};
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extern std::shared_ptr<BLConsensusLog> consensus_log;
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extern std::shared_ptr<alisql::AliSQLServer> alisql_server;
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extern alisql::Paxos *consensus_ptr;
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#endif
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#endif
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