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67 lines
1.7 KiB
Python
67 lines
1.7 KiB
Python
import os
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from time import sleep
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from app.config import HOST
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from app.extensions import db
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from app.log import LOG
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from app.models import Monitoring
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from server import create_app
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# the number of consecutive fails
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# if more than _max_nb_fails, alert
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# reset whenever the system comes back to normal
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# a system is considered fail if incoming_queue + active_queue > 50
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_nb_failed = 0
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_max_nb_fails = 10
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# the maximum number of emails in incoming & active queue
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_max_incoming = 50
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def get_stats():
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"""Look at different metrics and alert appropriately"""
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incoming_queue = nb_files("/var/spool/postfix/incoming")
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active_queue = nb_files("/var/spool/postfix/active")
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deferred_queue = nb_files("/var/spool/postfix/deferred")
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LOG.d("postfix queue sizes %s %s %s", incoming_queue, active_queue, deferred_queue)
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Monitoring.create(
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host=HOST,
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incoming_queue=incoming_queue,
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active_queue=active_queue,
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deferred_queue=deferred_queue,
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)
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db.session.commit()
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global _nb_failed
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# alert when too many emails in incoming + active queue
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if incoming_queue > _max_incoming:
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_nb_failed += 1
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if _nb_failed > _max_nb_fails:
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# reset
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_nb_failed = 0
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LOG.exception(
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"Too many emails in incoming & active queue %s %s",
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incoming_queue,
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active_queue,
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)
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else:
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_nb_failed = 0
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def nb_files(directory) -> int:
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"""return the number of files in directory and its sub-directories"""
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return sum(len(files) for _, _, files in os.walk(directory))
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if __name__ == "__main__":
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while True:
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app = create_app()
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with app.app_context():
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get_stats()
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# 1 min
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sleep(60)
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