#!/usr/bin/env python

import sys
from pcp import pmapi

class Test(object):
    def __init__(self):
        self.context = None
        self.opts = self.options()

    def options(self):
        opts = pmapi.pmOptions()
        opts.pmSetShortOptions("D:")
        opts.pmSetLongOptionDebug()        # -D/--debug
        return opts

    def connect(self):
        """ Establish a PMAPI context to archive, host or local, via args """
        self.context = pmapi.pmContext.fromOptions(self.opts, sys.argv)

    def execute(self):
        """ Execute a test """
        try:
            self.context.pmRegisterDerived("fuu", "rat(disk.dev.read)")
            print "REGISTERED a rat?"
        except pmapi.pmErr as error:
            print "PMAPI exception as requested"
            sys.stderr.write('%s: %s\n' % (error.progname(), error.message()))

if __name__ == '__main__':
    try:
        T = Test()
        T.connect()
        T.execute()
    except pmapi.pmUsageErr as usage:
        usage.message()
    except Exception as error:
        sys.stderr.write(str(error) + "\n")