Method export_blockchain2

src/Core/BlockChainFileFormat.cpp:257–279

}

bool LegacyBlockChainWriter::export_blockchain2(const std::string &index_file_name, const std::string &item_file_name,
    const BlockChainState &block_chain, Height max_height) {
	auto idea_start = std::chrono::high_resolution_clock::now();
	std::cout << "Start exporting blocks" << std::endl;
	LegacyBlockChainWriter writer(index_file_name, item_file_name, block_chain.get_tip_height() + 1);
	for (Height ha = 0; ha != block_chain.get_tip_height() + 1; ++ha) {
		if (ha >= max_height)
			break;
		Hash bid{};
		BinaryArray block_data;
		RawBlock raw_block;
		if (!block_chain.get_chain(ha, &bid) || !block_chain.get_block(bid, &block_data, &raw_block))
			throw std::runtime_error("block_chain.get_block failed");
		writer.write_block(raw_block);
		if (ha % 10000 == 0)
			std::cout << "Exporting block " << ha << "/" << block_chain.get_tip_height() << std::endl;
	}
	auto idea_ms =
	    std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::high_resolution_clock::now() - idea_start);
	std::cout << "Last exported block " << block_chain.get_tip_height() << " seconds=" << double(idea_ms.count()) / 1000
	          << std::endl;
	return true;
}