59 lines
1.6 KiB
Python
59 lines
1.6 KiB
Python
import logging
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from .log_inotify_observer import LogInotifyObserver
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LOG = logging.getLogger(__name__)
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class ProcessLogHandler:
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keys = ['process.log']
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type_id = 'ControlEventHandler'
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def __init__(self, *, process_name, supervisor_uri, log_tail=0):
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self.connector, self._monitor = None, None
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self.process_name = process_name
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self._supervisor_uri = supervisor_uri
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self._initial_log_tail = log_tail
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self.command_handlers = {
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'process.log.set': self.handle_set,
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'process.log.start': self.handle_start,
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'process.log.stop': self.handle_stop
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}
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def start(self):
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if not self._monitor:
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self._monitor = LogInotifyObserver(
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connector=self.connector,
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process_name=self.process_name,
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supervisor_uri=self._supervisor_uri,
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log_tail=self._initial_log_tail
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)
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self._monitor.start()
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def handle_event(self, message, _):
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try:
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self.command_handlers[message['key']](message)
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except KeyError:
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LOG.error('IGNORING MESSAGE: Invalid message received: %s', message)
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def handle_set(self, data):
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if data.get('name'):
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self._monitor.process_name = data['name']
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if data.get('tail'):
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self._monitor.log_tail = data['tail']
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def handle_start(self, _):
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self.start()
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def handle_stop(self, _):
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self._stop_monitor()
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def _stop_monitor(self):
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if self._monitor:
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self._monitor.stop()
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self._monitor = None
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def cleanup(self):
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self._stop_monitor()
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