/usr/share/doc/libbitcoin-dev/examples/initchain.cpp is in libbitcoin-dev 2.0-2.4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 | /*
* Copyright (c) 2011-2013 libbitcoin developers (see AUTHORS)
*
* This file is part of libbitcoin.
*
* libbitcoin is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License with
* additional permissions to the one published by the Free Software
* Foundation, either version 3 of the License, or (at your option)
* any later version. For more information see LICENSE.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
Create a new leveldb blockchain database.
*/
#include <future>
#include <bitcoin/bitcoin.hpp>
using namespace bc;
int main(int argc, char** argv)
{
if (argc != 2)
return 1;
const std::string dbpath = argv[1];
// Threadpool context containing 1 thread.
threadpool pool(1);
// leveldb_blockchain operations execute in pool's thread.
leveldb_blockchain chain(pool);
// Completion handler for starting the leveldb_blockchain.
// Does nothing.
auto blockchain_start = [](const std::error_code& ec) {};
// Start blockchain with a database path.
chain.start(dbpath, blockchain_start);
// First block is the genesis block.
block_type first_block = genesis_block();
std::promise<std::error_code> ec_promise;
// Completion handler for import method.
auto import_finished =
[&ec_promise](const std::error_code& ec)
{
ec_promise.set_value(ec);
};
// Import the genesis block at height 0.
// Doesn't validate or perform checks on the block.
chain.import(first_block, 0, import_finished);
// Wait until std::error_code is set by
// import_finished completion handler.
std::error_code ec = ec_promise.get_future().get();
if (ec)
{
log_error() << "Importing genesis block failed: " << ec.message();
return -1;
}
log_info() << "Imported genesis block "
<< hash_block_header(first_block.header);
// All threadpools stopping in parallel...
pool.stop();
// ... Make them all join main thread and wait until they finish.
pool.join();
// Now safely close leveldb_blockchain.
chain.stop();
return 0;
}
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