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import abc |
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import types |
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import typing |
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import uuid |
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from dataclasses import dataclass |
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from functools import partial |
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from .. import constants, errors, utils |
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from ..protocol import JsonRpcRequest, JsonRpcResponse |
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__all__ = ( |
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'BaseJsonRpcClient', |
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'UnlinkedResults', |
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) |
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class BaseJsonRpcClient(abc.ABC): |
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error_map: typing.Dict[int, errors.JsonRpcError] = { |
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error.code: error |
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for error in errors.DEFAULT_KNOWN_ERRORS |
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} |
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json_serialize: typing.Callable = utils.json_serialize |
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async def __aenter__(self) -> 'BaseJsonRpcClient': |
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await self.connect() |
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return self |
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async def __aexit__(self, |
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exc_type: typing.Optional[typing.Type[BaseException]], |
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exc_value: typing.Optional[BaseException], |
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traceback: typing.Optional[types.TracebackType]) -> None: |
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await self.disconnect() |
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@abc.abstractmethod |
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async def connect(self) -> None: |
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pass |
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@abc.abstractmethod |
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async def disconnect(self) -> None: |
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pass |
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async def call(self, method: str, *args, **kwargs) -> typing.Any: |
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request = JsonRpcRequest(msg_id=str(uuid.uuid4()), method=method, args=args, kwargs=kwargs) |
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response = await self.direct_call(request) |
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if response.error: |
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raise response.error |
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return response.result |
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async def notify(self, method: str, *args, **kwargs) -> None: |
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request = JsonRpcRequest(method=method, args=args, kwargs=kwargs) |
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await self.send_json(request.to_dict(), without_response=True) |
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async def batch(self, methods: typing.Iterable[typing.Union[str, list, tuple]]) -> typing.Any: |
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requests = [self._parse_batch_method(method) for method in methods] |
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responses = await self.direct_batch(requests) |
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return self._collect_batch_result(requests, responses) |
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async def batch_notify(self, methods: typing.Iterable[typing.Union[str, list, tuple]]) -> None: |
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requests = [self._parse_batch_method(method, is_notification=True) for method in methods] |
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data = [request.to_dict() for request in requests] |
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await self.send_json(data, without_response=True) |
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async def direct_call(self, request: JsonRpcRequest) -> JsonRpcResponse: |
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json_response, context = await self.send_json(request.to_dict()) |
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response = JsonRpcResponse.from_dict( |
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json_response, |
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error_map=self.error_map, |
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context=context, |
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) |
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return response |
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async def direct_batch(self, requests: typing.List[JsonRpcRequest]) -> typing.List[JsonRpcResponse]: |
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data = [request.to_dict() for request in requests] |
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json_response, context = await self.send_json(data) |
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return [ |
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JsonRpcResponse.from_dict(item, error_map=self.error_map, context=context) |
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for item in json_response |
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] |
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@abc.abstractmethod |
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async def send_json(self, |
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data: typing.Any, *, |
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without_response: bool = False) -> typing.Tuple[typing.Any, typing.Optional[dict]]: |
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pass |
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def __getattr__(self, method) -> typing.Callable: |
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return partial(self.call, method) |
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@staticmethod |
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def _collect_batch_result(requests: typing.List[JsonRpcRequest], responses: typing.List[JsonRpcResponse]) -> list: |
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unlinked_results = UnlinkedResults(data=[]) |
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responses_map = {} |
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for response in responses: |
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value = response.error or response.result |
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if response.msg_id in constants.EMPTY_VALUES: |
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unlinked_results.data.append(value) |
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continue |
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responses_map[response.msg_id] = value |
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unlinked_results = unlinked_results.compile() |
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result = [] |
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for request in requests: |
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if request.msg_id in constants.EMPTY_VALUES: |
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result.append(unlinked_results) |
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continue |
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result.append(responses_map.get(request.msg_id, unlinked_results)) |
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return result |
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@staticmethod |
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def _parse_batch_method(batch_method: typing.Union[str, list, tuple], *, |
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is_notification: bool = False) -> JsonRpcRequest: |
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msg_id = constants.NOTHING if is_notification else str(uuid.uuid4()) |
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if isinstance(batch_method, str): |
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return JsonRpcRequest(msg_id=msg_id, method=batch_method) |
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if len(batch_method) == 1: |
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return JsonRpcRequest(msg_id=msg_id, method=batch_method[0]) |
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if len(batch_method) == 2: |
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return JsonRpcRequest(msg_id=msg_id, method=batch_method[0], params=batch_method[1]) |
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if len(batch_method) == 3: |
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return JsonRpcRequest(msg_id=msg_id, method=batch_method[0], args=batch_method[1], kwargs=batch_method[2]) |
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raise errors.InvalidParams('Use string or list (length less than or equal to 3).') |
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@dataclass |
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class UnlinkedResults: |
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data: list |
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def compile(self) -> typing.Any: |
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if not self.data: |
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return None |
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if len(self.data) == 1: |
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return self.data[0] |
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return self |
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expert-m /
aiohttp-rpc
