96 lines
2.6 KiB
Python
96 lines
2.6 KiB
Python
# Copyright (c) Microsoft Corporation. All rights reserved.
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# Licensed under the MIT License.
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import contextlib
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import socket
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import sys
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# set the socket before it gets blocked or overwritten by a user tests
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_SOCKET = socket.socket
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class PipeManager:
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def __init__(self, name):
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self.name = name
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def __enter__(self):
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return self.connect()
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def __exit__(self, *_):
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self.close()
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def connect(self):
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self._writer = open(self.name, "w", encoding="utf-8") # noqa: SIM115, PTH123
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# reader created in read method
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return self
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def close(self):
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self._writer.close()
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if hasattr(self, "_reader"):
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self._reader.close()
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def write(self, data: str):
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try:
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# for windows, is should only use \n\n
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request = f"""content-length: {len(data)}\ncontent-type: application/json\n\n{data}"""
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self._writer.write(request)
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self._writer.flush()
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except Exception as e:
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print("error attempting to write to pipe", e)
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raise (e)
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def read(self, bufsize=1024) -> str:
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"""Read data from the socket.
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Args:
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bufsize (int): Number of bytes to read from the socket.
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Returns:
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data (str): Data received from the socket.
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"""
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# returns a string automatically from read
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if not hasattr(self, "_reader"):
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self._reader = open(self.name, encoding="utf-8") # noqa: SIM115, PTH123
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return self._reader.read(bufsize)
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class SocketManager:
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"""Create a socket and connect to the given address.
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The address is a (host: str, port: int) tuple.
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Example usage:
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```
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with SocketManager(("localhost", 6767)) as sock:
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request = json.dumps(payload)
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result = s.socket.sendall(request.encode("utf-8"))
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```
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"""
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def __init__(self, addr):
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self.addr = addr
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self.socket = None
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def __enter__(self):
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return self.connect()
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def __exit__(self, *_):
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self.close()
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def connect(self):
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self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM, socket.IPPROTO_TCP)
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if sys.platform == "win32":
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addr_use = socket.SO_EXCLUSIVEADDRUSE
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else:
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addr_use = socket.SO_REUSEADDR
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self.socket.setsockopt(socket.SOL_SOCKET, addr_use, 1)
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self.socket.connect(self.addr)
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return self
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def close(self):
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if self.socket:
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with contextlib.suppress(Exception):
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self.socket.shutdown(socket.SHUT_RDWR)
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self.socket.close()
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