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# -*- test-case-name: twisted.runner.test.test_procmontap -*- # Copyright (c) Twisted Matrix Laboratories. # See LICENSE for details. """ Support for creating a service which runs a process monitor. """ from typing import List, Sequence from twisted.python import usage from twisted.runner.procmon import ProcessMonitor class Options(usage.Options): """ Define the options accepted by the I{twistd procmon} plugin. """ synopsis = "[procmon options] commandline" optParameters = [ [ "threshold", "t", 1, "How long a process has to live " "before the death is considered instant, in seconds.", float, ], [ "killtime", "k", 5, "How long a process being killed " "has to get its affairs in order before it gets killed " "with an unmaskable signal.", float, ], [ "minrestartdelay", "m", 1, "The minimum time (in " "seconds) to wait before attempting to restart a " "process", float, ], [ "maxrestartdelay", "M", 3600, "The maximum time (in " "seconds) to wait before attempting to restart a " "process", float, ], ] optFlags: List[Sequence[str]] = [] longdesc = """\ procmon runs processes, monitors their progress, and restarts them when they die. procmon will not attempt to restart a process that appears to die instantly; with each "instant" death (less than 1 second, by default), it will delay approximately twice as long before restarting it. A successful run will reset the counter. Eg twistd procmon sleep 10""" def parseArgs(self, *args): """ Grab the command line that is going to be started and monitored """ self["args"] = args def postOptions(self): """ Check for dependencies. """ if len(self["args"]) < 1: raise usage.UsageError("Please specify a process commandline") def makeService(config): s = ProcessMonitor() s.threshold = config["threshold"] s.killTime = config["killtime"] s.minRestartDelay = config["minrestartdelay"] s.maxRestartDelay = config["maxrestartdelay"] s.addProcess(" ".join(config["args"]), config["args"]) return s