Python get_chaindb_manager Examples

Example #1

File: test_database_over_ipc_manager.py Project: sjyi/py-evm

def database_server_ipc_path():
    core_db = AtomicDB()
    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:
        trinity_config = TrinityConfig(
            network_id=ROPSTEN_NETWORK_ID,
            data_dir=temp_dir,
        )

        manager = get_chaindb_manager(trinity_config, core_db)
        chaindb_server_process = multiprocessing.Process(
            target=serve_chaindb,
            args=(manager, ),
        )
        chaindb_server_process.start()

        wait_for_ipc(trinity_config.database_ipc_path)

        try:
            yield trinity_config.database_ipc_path
        finally:
            kill_process_gracefully(chaindb_server_process,
                                    logging.getLogger())

Example #2

File: main.py Project: nsabharwal/py-evm

def run_database_process(trinity_config: TrinityConfig, db_class: Type[BaseDB]) -> None:
    with trinity_config.process_id_file('database'):
        base_db = db_class(db_path=trinity_config.database_dir)

        manager = get_chaindb_manager(trinity_config, base_db)
        server = manager.get_server()  # type: ignore

        def _sigint_handler(*args: Any) -> None:
            server.stop_event.set()

        signal.signal(signal.SIGINT, _sigint_handler)

        try:
            server.serve_forever()
        except SystemExit:
            server.stop_event.set()
            raise