60 lines
1.4 KiB
Python
60 lines
1.4 KiB
Python
import logging
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import os
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import signal
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import subprocess
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import sys
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from typing_extensions import override
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from platypush.process import ControllableProcess
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class ApplicationProcess(ControllableProcess):
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"""
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Controllable process wrapper interface for the main application.
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"""
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def __init__(self, *args: str, pidfile: str, **kwargs):
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super().__init__(name='platypush', **kwargs)
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self.logger = logging.getLogger('platypush')
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self.args = args
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self.pidfile = pidfile
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def __enter__(self) -> "ApplicationProcess":
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self.start()
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return self
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def __exit__(self, *_, **__):
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self.stop()
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@override
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def main(self):
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self.logger.info('Starting application...')
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with subprocess.Popen(
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['python', '-m', 'platypush.app', *self.args],
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stdin=sys.stdin,
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stdout=sys.stdout,
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stderr=sys.stderr,
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) as app:
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try:
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app.wait()
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except KeyboardInterrupt:
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pass
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@override
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def on_stop(self):
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try:
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with open(self.pidfile, 'r') as f:
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pid = int(f.read().strip())
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except (OSError, ValueError):
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pid = None
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if not pid:
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return
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try:
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os.kill(pid, signal.SIGINT)
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except OSError:
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pass
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