turtl / twisted / plugins /

Full commit
Valentino Volong… 646a063 

Turtle plugin for Twisted.
from zope.interface import classProvides
from twisted.plugin import IPlugin
from twisted.python.usage import Options, UsageError
from twisted.python import filepath
from twisted.application.service import IServiceMaker

class TurtlePlugin(object):
    This plugin provides ways to throttle web request through
    a proxy server that can be configured on a hostname basis.
    classProvides(IPlugin, IServiceMaker)

    tapname = "turtle"
    description = "Throttling proxy a given set of destination hostnames"

    class options(Options):
        optParameters = [
            ["with_syslog_prefix", "p", None, "Activate syslog and give it the specified prefix (default will not use syslog)"],
            ["config", "c", None, "The yaml configuration file that should be used"],

        def postOptions(self):
            Check and finalize the value of the arguments.
            if self['config'] is None:
                raise UsageError("Must specify a config file")
            fp = filepath.FilePath(self['config'])
            if not fp.exists():
                raise UsageError("%s doesn't exist." % (fp.path,))

            self['config'] = fp

    def makeService(cls, options):
        Create an L{IService} for the parameters and return it
        from turtle import service
        return service.makeService(options)