BlocksdatFile Class Reference

#include <blocksdat_file.h>

Collaboration diagram for BlocksdatFile:

Public Member Functions
bool	store_blockchain_raw (cryptonote::Blockchain *cs, cryptonote::tx_memory_pool *txp, boost::filesystem::path &output_file, uint64_t use_block_height=0)

Protected Member Functions
bool	open_writer (const boost::filesystem::path &file_path, uint64_t block_stop)
bool	initialize_file (uint64_t block_stop)
bool	close ()
void	write_block (const crypto::hash &block_hash)

Protected Attributes
Blockchain *	m_blockchain_storage
std::ofstream *	m_raw_data_file

Detailed Description

Definition at line 58 of file blocksdat_file.h.

Member Function Documentation

close()

bool BlocksdatFile::close ( )

protected

Definition at line 109 of file blocksdat_file.cpp.

{
  if (m_raw_data_file->fail())
    return false;
 
  m_raw_data_file->flush();
  delete m_raw_data_file;
  return true;
}

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initialize_file()

bool BlocksdatFile::initialize_file ( uint64_t block_stop )

protected

Definition at line 84 of file blocksdat_file.cpp.

{
  const uint32_t nblocks = block_stop + 1;
  unsigned char nblocksc[4];
 
  nblocksc[0] = nblocks & 0xff;
  nblocksc[1] = (nblocks >> 8) & 0xff;
  nblocksc[2] = (nblocks >> 16) & 0xff;
  nblocksc[3] = (nblocks >> 24) & 0xff;
 
  // 4 bytes little endian
  *m_raw_data_file << nblocksc[0];
  *m_raw_data_file << nblocksc[1];
  *m_raw_data_file << nblocksc[2];
  *m_raw_data_file << nblocksc[3];
 
  return true;
}

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open_writer()

bool BlocksdatFile::open_writer ( const boost::filesystem::path & file_path, uint64_t block_stop )

protected

Definition at line 47 of file blocksdat_file.cpp.

{
  const boost::filesystem::path dir_path = file_path.parent_path();
  if (!dir_path.empty())
  {
    if (boost::filesystem::exists(dir_path))
    {
      if (!boost::filesystem::is_directory(dir_path))
      {
        MFATAL("export directory path is a file: " << dir_path);
        return false;
      }
    }
    else
    {
      if (!boost::filesystem::create_directory(dir_path))
      {
        MFATAL("Failed to create directory " << dir_path);
        return false;
      }
    }
  }
 
  m_raw_data_file = new std::ofstream();
 
  MINFO("creating file");
 
  m_raw_data_file->open(file_path.string(), std::ios_base::binary | std::ios_base::out | std::ios::trunc);
  if (m_raw_data_file->fail())
    return false;
 
  initialize_file(block_stop);
 
  return true;
}

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store_blockchain_raw()

bool BlocksdatFile::store_blockchain_raw	(	cryptonote::Blockchain *	cs,
		cryptonote::tx_memory_pool *	txp,
		boost::filesystem::path &	output_file,
		uint64_t	use_block_height = 0 )

Definition at line 120 of file blocksdat_file.cpp.

{
  uint64_t num_blocks_written = 0;
  m_blockchain_storage = _blockchain_storage;
  uint64_t progress_interval = 100;
  block b;
 
  uint64_t block_start = 0;
  uint64_t block_stop = 0;
  MINFO("source blockchain height: " <<  m_blockchain_storage->get_current_blockchain_height()-1);
  if ((requested_block_stop > 0) && (requested_block_stop < m_blockchain_storage->get_current_blockchain_height()))
  {
    MINFO("Using requested block height: " << requested_block_stop);
    block_stop = requested_block_stop;
  }
  else
  {
    block_stop = m_blockchain_storage->get_current_blockchain_height() - 1;
    MINFO("Using block height of source blockchain: " << block_stop);
  }
  MINFO("Storing blocks raw data...");
  if (!BlocksdatFile::open_writer(output_file, block_stop))
  {
    MFATAL("failed to open raw file for write");
    return false;
  }
  for (m_cur_height = block_start; m_cur_height <= block_stop; ++m_cur_height)
  {
    // this method's height refers to 0-based height (genesis block = height 0)
    crypto::hash hash = m_blockchain_storage->get_block_id_by_height(m_cur_height);
    write_block(hash);
    if (m_cur_height % NUM_BLOCKS_PER_CHUNK == 0) {
      num_blocks_written += NUM_BLOCKS_PER_CHUNK;
    }
    if (m_cur_height % progress_interval == 0) {
      std::cout << refresh_string;
      std::cout << "block " << m_cur_height << "/" << block_stop << std::flush;
    }
  }
  // print message for last block, which may not have been printed yet due to progress_interval
  std::cout << refresh_string;
  std::cout << "block " << m_cur_height-1 << "/" << block_stop << ENDL;
 
  MINFO("Number of blocks exported: " << num_blocks_written);
 
  return BlocksdatFile::close();
}

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write_block()

void BlocksdatFile::write_block ( const crypto::hash & block_hash )

protected

Definition at line 103 of file blocksdat_file.cpp.

{
  const std::string data(block_hash.data, sizeof(block_hash));
  *m_raw_data_file << data;
}

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Member Data Documentation

m_blockchain_storage

Blockchain* BlocksdatFile::m_blockchain_storage

protected

Definition at line 67 of file blocksdat_file.h.

m_raw_data_file

std::ofstream* BlocksdatFile::m_raw_data_file

protected

Definition at line 69 of file blocksdat_file.h.

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The documentation for this class was generated from the following files:

• /home/abuild/rpmbuild/BUILD/electroneum-5.1.3.1-build/electroneum-5.1.3.1/src/blockchain_utilities/blocksdat_file.h
• /home/abuild/rpmbuild/BUILD/electroneum-5.1.3.1-build/electroneum-5.1.3.1/src/blockchain_utilities/blocksdat_file.cpp