48 lines
1.3 KiB
Python
48 lines
1.3 KiB
Python
import logging
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from abc import abstractmethod
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from json import loads, dumps
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from pipe_io_server import PipeIOServer
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LOG = logging.getLogger(__name__)
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DEFAULT_PERMISSIONS = 0o600
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class PipeIOHandlerBase:
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keys = ['']
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def __init__(self, in_pipe_path, out_pipe_path, permissions=DEFAULT_PERMISSIONS):
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self.connector = None
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self.in_pipe = in_pipe_path
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self.out_pipe = out_pipe_path
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self.pipe_io = PipeIOServer(
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in_pipe_path,
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out_pipe_path,
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permissions
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)
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self.pipe_io.handle_message = self._server_handle_message
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self.pipe_io.start()
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def _server_handle_message(self, message):
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try:
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self.handle_pipe_event(message)
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except: # pylint: disable=bare-except
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LOG.exception('Failed to handle message %s from pipe %s!', message, self.in_pipe)
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@abstractmethod
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def handle_pipe_event(self, message_bytes):
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raise NotImplementedError()
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def cleanup(self):
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self.pipe_io.stop()
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class PipeIOHandler(PipeIOHandlerBase):
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def handle_event(self, message, _):
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json_bytes = dumps(message).encode()
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self.pipe_io.send_message(json_bytes)
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def handle_pipe_event(self, message_bytes):
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json = loads(message_bytes)
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self.connector.send_message(json)
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