Python create_db_server_manager Examples

Example #1

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,
            trinity_root_dir=temp_dir,
        )
        trinity_config.add_app_config(Eth1AppConfig(trinity_config, None))
        initialize_data_dir(trinity_config)

        manager = create_db_server_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

def run_database_process(trinity_config: TrinityConfig, db_class: Type[BaseDB]) -> None:
    with trinity_config.process_id_file('database'):
        app_config = trinity_config.get_app_config(Eth1AppConfig)

        base_db = db_class(db_path=app_config.database_dir)

        manager = create_db_server_manager(trinity_config, base_db)
        serve_until_sigint(manager)