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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
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