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import logging |
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import typing |
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from . import errors, protocol, client |
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__all__ = ( |
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'exception_middleware', |
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'extra_args_middleware', |
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'logging_middleware', |
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'ws_client_for_server_response', |
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'DEFAULT_MIDDLEWARES', |
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) |
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logger = logging.getLogger(__name__) |
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async def extra_args_middleware(request: protocol.JsonRpcRequest, handler: typing.Callable) -> protocol.JsonRpcResponse: |
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request.extra_args['rpc_request'] = request |
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return await handler(request) |
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async def exception_middleware(request: protocol.JsonRpcRequest, handler: typing.Callable) -> protocol.JsonRpcResponse: |
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try: |
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response = await handler(request) |
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except errors.JsonRpcError as e: |
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logger.warning('Unprocessed errors.JsonRpcError', exc_info=True) |
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response = protocol.JsonRpcResponse( |
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id=request.id, |
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jsonrpc=request.jsonrpc, |
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error=e, |
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) |
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except Exception as e: |
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logger.exception(e) |
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response = protocol.JsonRpcResponse( |
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id=request.id, |
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jsonrpc=request.jsonrpc, |
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error=errors.InternalError().with_traceback(), |
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) |
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return response |
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async def logging_middleware(request: protocol.JsonRpcRequest, handler: typing.Callable) -> protocol.JsonRpcResponse: |
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raw_request = request.to_dict() |
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logger.info( |
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'RpcRequest id="%s" method="%s" params="%s"', |
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raw_request.get('id', ''), |
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raw_request['method'], |
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raw_request.get('params', ''), |
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extra={'request': raw_request}, |
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) |
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response = await handler(request) |
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raw_response = request.to_dict() |
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logger.info( |
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'RpcResponse id="%s" method="%s" params="%s" result="%s" error="%s"', |
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raw_request.get('id', ''), |
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raw_request['method'], |
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raw_request.get('params', ''), |
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raw_response.get('result', ''), |
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raw_response.get('error', ''), |
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extra={'request': raw_response, 'response': raw_response}, |
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) |
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return response |
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async def ws_client_for_server_response(request: protocol.JsonRpcRequest, |
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handler: typing.Callable) -> protocol.JsonRpcResponse: |
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ws_connect = request.context['ws_connect'] |
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request.context['ws_client'] = client.WsJsonRpcClient(ws_connect=ws_connect) |
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request.extra_args['rpc_ws_client'] = request.context['ws_client'] |
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return await handler(request) |
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DEFAULT_MIDDLEWARES = ( |
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exception_middleware, |
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extra_args_middleware, |
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) |
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