mirror of
https://github.com/avatao-content/baseimage-tutorial-framework
synced 2024-11-14 02:57:18 +00:00
45 lines
1.3 KiB
Python
45 lines
1.3 KiB
Python
from json import loads, dumps, JSONDecodeError
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from tfw import EventHandlerBase
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from tfw.config.logs import logging
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from .pipe_io_server import PipeIOServer
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LOG = logging.getLogger(__name__)
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class PipeIOEventHandler(EventHandlerBase):
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def __init__(self, key, in_pipe_path, out_pipe_path, permissions=0o600):
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super().__init__(key)
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self._pipe_io_server = JSONProxyPipeIOServer(
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in_pipe_path,
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out_pipe_path,
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self.server_connector.send,
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permissions
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)
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self._pipe_io_server.start()
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def cleanup(self):
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self._pipe_io_server.stop()
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def handle_event(self, message):
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try:
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json_bytes = dumps(message).encode()
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self._pipe_io_server.send_message(json_bytes)
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except TypeError:
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LOG.error("Message %s not JSON serializable! Ignoring...", message)
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class JSONProxyPipeIOServer(PipeIOServer):
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def __init__(self, in_pipe_path, out_pipe_path, proxy_method, permissions):
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super().__init__(in_pipe_path, out_pipe_path, permissions)
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self.proxy = proxy_method
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def handle_message(self, message):
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try:
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json = loads(message)
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self.proxy(json)
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except JSONDecodeError:
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LOG.error("Invalid JSON received on %s! Ignoring...", self._in_pipe)
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