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import os |
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import signal |
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import sys |
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5
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from st2actions import config |
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from st2actions import scheduler, worker |
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from st2common import log as logging |
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from st2common.service_setup import setup as common_setup |
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from st2common.service_setup import teardown as common_teardown |
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from st2common.util.monkey_patch import monkey_patch |
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__all__ = [ |
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'main' |
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] |
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monkey_patch() |
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LOG = logging.getLogger(__name__) |
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def _setup_sigterm_handler(): |
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def sigterm_handler(signum=None, frame=None): |
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# This will cause SystemExit to be throw and allow for component cleanup. |
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sys.exit(0) |
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# Register a SIGTERM signal handler which calls sys.exit which causes SystemExit to |
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# be thrown. We catch SystemExit and handle cleanup there. |
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signal.signal(signal.SIGTERM, sigterm_handler) |
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def _setup(): |
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common_setup(service='actionrunner', config=config, setup_db=True, register_mq_exchanges=True, |
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register_signal_handlers=True) |
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_setup_sigterm_handler() |
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def _run_worker(): |
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LOG.info('(PID=%s) Worker started.', os.getpid()) |
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components = [ |
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scheduler.get_scheduler(), |
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worker.get_worker() |
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] |
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try: |
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for component in components: |
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component.start() |
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for component in components: |
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component.wait() |
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except (KeyboardInterrupt, SystemExit): |
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LOG.info('(PID=%s) Worker stopped.', os.getpid()) |
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errors = False |
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for component in components: |
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try: |
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component.shutdown() |
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except: |
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LOG.exception('Unable to shutdown %s.', component.__class__.__name__) |
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errors = True |
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if errors: |
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return 1 |
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except: |
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LOG.exception('(PID=%s) Worker unexpectedly stopped.', os.getpid()) |
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return 1 |
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return 0 |
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def _teardown(): |
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common_teardown() |
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def main(): |
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try: |
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_setup() |
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return _run_worker() |
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except SystemExit as exit_code: |
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sys.exit(exit_code) |
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except: |
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LOG.exception('(PID=%s) Worker quit due to exception.', os.getpid()) |
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return 1 |
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finally: |
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_teardown() |
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StackStorm /
st2
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