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A simple util library for creating applications which needs to keep running, despite abnormalities

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A simple util library for creating applications which needs to keep running, despite abnormalities

Installing

pip install pyrobustness

Usage

Timeout example:

from robust.tools import timeout


@timeout(5)
def very_long_job():
    import time
    while True:
      print("Zzz")
      time.sleep(1)

very_long_job()

Retry example:

from robust.tools import retry

@retry(5)
def very_broken_method():
    print(".")
    raise RuntimeError("Something is broken...")

while True:
    very_broken_method()

Circuit Breaker example:

import time
from robust.tools import breaker

counter = 0

@breaker(limit=5, revive=5)
def very_broken_method():
    nonlocal counter
    if counter <= 5:
        counter += 1
    	raise RuntimeError("Something is broken...")
    else:
        print("We've made it!")


while True:
    try:
    	very_broken_method()
    except RuntimeError:
        pass
    except Exception:
        break

time.sleep(5)
very_broken_method()

Version History

  • 1.1:
    • Additional type for alarm - threading to support Windows OS, or certain cases when signal is not working as supposed
    • CircuitBreaker pattern, inspired by speech by Daniel Riti @Pycon 2016
  • 1.0: Initial version

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