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import types |
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import typing |
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import uuid |
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from functools import partial |
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import aiohttp |
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from . import errors, utils |
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from .protocol import JsonRpcRequest, JsonRpcResponse |
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__all__ = ( |
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'JsonRpcClient', |
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) |
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class JsonRpcClient: |
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url: str |
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session: typing.Optional[aiohttp.ClientSession] |
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_json_serialize: typing.Callable |
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_is_outer_session: bool |
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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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def __init__(self, |
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url: str, *, |
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session: typing.Optional[aiohttp.ClientSession] = None, |
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known_errors: typing.Optional[typing.Iterable] = None, |
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json_serialize: typing.Callable = utils.json_serialize) -> None: |
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self.url = url |
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self.session = session |
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self._is_outer_session = session is not None |
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self._json_serialize = json_serialize |
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if known_errors is not None: |
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self._error_map = {error.code: error for error in known_errors} |
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def __getattr__(self, method) -> typing.Callable: |
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return partial(self.call, method) |
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async def call(self, method: str, *args, **kwargs) -> typing.Any: |
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rpc_request = JsonRpcRequest(msg_id=str(uuid.uuid4()), method=method, args=args, kwargs=kwargs) |
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rpc_response = await self.direct_call(rpc_request) |
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if rpc_response.error: |
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raise rpc_response.error |
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return rpc_response.result |
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async def batch(self, methods: typing.Iterable[typing.Union[str, list, tuple]]) -> typing.Any: |
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rpc_requests = [] |
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for method in methods: |
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rpc_request = self._parse_batch_method(method) |
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rpc_requests.append(rpc_request) |
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rpc_responses = await self.direct_batch(rpc_requests) |
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return [ |
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rpc_response.error if rpc_response.error else rpc_response.result |
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for rpc_response in rpc_responses |
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] |
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async def direct_call(self, rpc_request: JsonRpcRequest) -> JsonRpcResponse: |
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http_response, json_response = await self.send_json(rpc_request.to_dict()) |
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rpc_response = JsonRpcResponse.from_dict( |
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json_response, |
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error_map=self._error_map, |
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context={'http_response': http_response}, |
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) |
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return rpc_response |
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async def direct_batch(self, rpc_requests: typing.List[JsonRpcRequest]) -> typing.List[JsonRpcResponse]: |
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data = [rpc_request.to_dict() for rpc_request in rpc_requests] |
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http_response, json_response = await self.send_json(data) |
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return [ |
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JsonRpcResponse.from_dict(item, error_map=self._error_map, context={'http_response': http_response}) |
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for item in json_response |
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] |
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async def send_json(self, data: typing.Any) -> typing.Tuple[aiohttp.ClientResponse, typing.Any]: |
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http_response = await self.session.post(self.url, json=data) |
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json_response = await http_response.json() |
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return http_response, json_response |
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async def __aenter__(self) -> 'JsonRpcClient': |
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if not self.session: |
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self.session = aiohttp.ClientSession(json_serialize=self._json_serialize) |
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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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if not self._is_outer_session: |
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await self.session.close() |
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@staticmethod |
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def _parse_batch_method(batch_method: typing.Union[str, list, tuple]) -> JsonRpcRequest: |
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msg_id = 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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expert-m /
aiohttp-rpc
