pbft_chain.hpp

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#pragma once
 
#include <iostream>
#include <shared_mutex>
#include <string>
 
#include "logger/logging.hpp"
#include "pbft/pbft_block.hpp"
 
namespace taraxa {
 
class DbStorage;
class Vote;
class DagBlock;
struct Transaction;
 
class PbftChain {
 public:
  explicit PbftChain(std::shared_ptr<DbStorage> db);
 
  blk_hash_t getHeadHash() const;
 
  PbftPeriod getPbftChainSize() const;
 
  PbftPeriod getPbftChainSizeExcludingEmptyPbftBlocks() const;
 
  blk_hash_t getLastPbftBlockHash() const;
 
  blk_hash_t getLastNonNullPbftBlockAnchor() const;
 
  PbftBlock getPbftBlockInChain(blk_hash_t const& pbft_block_hash);
 
  std::string getJsonStr() const;
 
  std::string getJsonStrForBlock(blk_hash_t const& block_hash, bool null_anchor) const;
 
  bool findPbftBlockInChain(blk_hash_t const& pbft_block_hash);
 
  void updatePbftChain(blk_hash_t const& pbft_block_hash, blk_hash_t const& anchor_hash);
 
  bool checkPbftBlockValidation(const std::shared_ptr<PbftBlock>& pbft_block) const;
 
 private:
  mutable std::shared_mutex chain_head_access_;
 
  blk_hash_t head_hash_;             // PBFT head hash
  PbftPeriod size_;                  // PBFT chain size, includes both executed and unexecuted PBFT blocks
  PbftPeriod non_empty_size_;        // PBFT chain size excluding blocks with null anchor, includes both executed and
                                     // unexecuted PBFT blocks
  blk_hash_t last_pbft_block_hash_;  // last PBFT block hash in PBFT chain, may not execute yet
  blk_hash_t last_non_null_pbft_dag_anchor_hash_;  // last dag block anchor which is not null
 
  std::shared_ptr<DbStorage> db_ = nullptr;
 
  logger::Logger logger_;
};
std::ostream& operator<<(std::ostream& strm, PbftChain const& pbft_chain);
 
}  // namespace taraxa