def database_server_ipc_path():
core_db = MemoryDB()
core_db[b'key-a'] = b'value-a'
chaindb = ChainDB(core_db)
# TODO: use a custom chain class only for testing.
chaindb.persist_header(ROPSTEN_GENESIS_HEADER)
with tempfile.TemporaryDirectory() as temp_dir:
chain_config = ChainConfig(network_id=ROPSTEN_NETWORK_ID,
data_dir=temp_dir)
manager = get_chaindb_manager(chain_config, core_db)
chaindb_server_process = multiprocessing.Process(
target=serve_chaindb,
args=(manager, ),
)
chaindb_server_process.start()
wait_for_ipc(chain_config.database_ipc_path)
try:
yield chain_config.database_ipc_path
finally:
kill_process_gracefully(chaindb_server_process,
logging.getLogger())
def test_chain_config_from_preconfigured_network(network_id):
chain_config = ChainConfig.from_preconfigured_network(network_id)
chain = chain_config.initialize_chain(AtomicDB(MemoryDB()))
if network_id == MAINNET_NETWORK_ID:
assert chain_config.chain_id == MainnetChain.chain_id
assert_vm_configuration_equal(chain_config.vm_configuration,
MainnetChain.vm_configuration)
assert chain.get_canonical_head() == MAINNET_GENESIS_HEADER
elif network_id == ROPSTEN_NETWORK_ID:
assert chain_config.chain_id == RopstenChain.chain_id
assert_vm_configuration_equal(chain_config.vm_configuration,
RopstenChain.vm_configuration)
assert chain.get_canonical_head() == ROPSTEN_GENESIS_HEADER
else:
assert False, "Invariant: unreachable code path"
def database_server_ipc_path():
core_db = MemoryDB()
core_db[b'key-a'] = b'value-a'
chaindb = ChainDB(core_db)
# TODO: use a custom chain class only for testing.
chaindb.persist_header_to_db(ROPSTEN_GENESIS_HEADER)
with tempfile.TemporaryDirectory() as temp_dir:
ipc_path = os.path.join(temp_dir, 'chaindb.ipc')
chaindb_server_process = multiprocessing.Process(
target=serve_chaindb,
args=(core_db, ipc_path),
)
chaindb_server_process.start()
wait_for_ipc(ipc_path)
try:
yield ipc_path
finally:
kill_process_gracefully(chaindb_server_process)