| # |
| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, |
| # software distributed under the License is distributed on an |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| # KIND, either express or implied. See the License for the |
| # specific language governing permissions and limitations |
| # under the License. |
| # |
| from concurrent.futures import Future |
| |
| from gremlin_python.driver import client, serializer |
| from gremlin_python.driver.remote_connection import ( |
| RemoteConnection, RemoteTraversal, RemoteTraversalSideEffects) |
| from gremlin_python.process.strategies import OptionsStrategy |
| |
| __author__ = 'David M. Brown (davebshow@gmail.com)' |
| |
| |
| class DriverRemoteConnection(RemoteConnection): |
| |
| def __init__(self, url, traversal_source, protocol_factory=None, |
| transport_factory=None, pool_size=None, max_workers=None, |
| username="", password="", message_serializer=None, |
| graphson_reader=None, graphson_writer=None, |
| headers=None, max_content_length=None): |
| if message_serializer is None: |
| message_serializer = serializer.GraphSONMessageSerializer( |
| reader=graphson_reader, |
| writer=graphson_writer) |
| self._client = client.Client(url, traversal_source, |
| protocol_factory=protocol_factory, |
| transport_factory=transport_factory, |
| pool_size=pool_size, |
| max_workers=max_workers, |
| message_serializer=message_serializer, |
| username=username, |
| password=password, |
| headers=headers, |
| max_content_length=max_content_length) |
| self._url = self._client._url |
| self._traversal_source = self._client._traversal_source |
| |
| def close(self): |
| self._client.close() |
| |
| def submit(self, bytecode): |
| result_set = self._client.submit(bytecode, request_options=self._extract_request_options(bytecode)) |
| results = result_set.all().result() |
| side_effects = RemoteTraversalSideEffects(result_set.request_id, self._client, |
| result_set.status_attributes) |
| return RemoteTraversal(iter(results), side_effects) |
| |
| def submitAsync(self, bytecode): |
| future = Future() |
| future_result_set = self._client.submitAsync(bytecode, request_options=self._extract_request_options(bytecode)) |
| |
| def cb(f): |
| try: |
| result_set = f.result() |
| results = result_set.all().result() |
| side_effects = RemoteTraversalSideEffects(result_set.request_id, self._client, |
| result_set.status_attributes) |
| future.set_result(RemoteTraversal(iter(results), side_effects)) |
| except Exception as e: |
| future.set_exception(e) |
| |
| future_result_set.add_done_callback(cb) |
| return future |
| |
| @staticmethod |
| def _extract_request_options(bytecode): |
| options_strategy = next((x for x in bytecode.source_instructions |
| if x[0] == "withStrategies" and type(x[1]) is OptionsStrategy), None) |
| request_options = None |
| if options_strategy: |
| allowed_keys = ['evaluationTimeout', 'scriptEvaluationTimeout', 'batchSize', 'requestId', 'userAgent'] |
| request_options = {allowed: options_strategy[1].configuration[allowed] for allowed in allowed_keys |
| if allowed in options_strategy[1].configuration} |
| return request_options |