""" Test creation of a PCP archive with metrics via pcp.pmi module """
#
# Copyright (C) 2012-2013 Red Hat Inc.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
# 
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# for more details.
#

import sys
import unittest
import cpmapi
from pcp import pmi
from pcp import pmapi

OUTFILE = ""

def test_pmi(self, path = OUTFILE, inherit = 0):
    """ Worker utility which creates a pmi object and exercises it """

    hostname = "fu.bar.com"
    timezone = "UTC"

    print("Writing to new PCP archive:", path)
    log = pmi.pmiLogImport(path, inherit)

    code = log.pmiSetHostname(hostname)
    print("pmiSetHostname:", hostname)
    self.assertTrue(code >= 0)

    code = log.pmiSetTimezone(timezone)
    print("pmiSetTimezone:", timezone)
    self.assertTrue(code >= 0)

    pmid = log.pmiID(60, 2, 0)
    indom = log.pmiInDom(60, 2)
    units = log.pmiUnits(0, 0, 0, 0, 0, 0)

    # create a metric without instances (hinv.ncpu)
    code = log.pmiAddMetric("hinv.ncpu", cpmapi.PM_ID_NULL,
                            cpmapi.PM_TYPE_U32, cpmapi.PM_INDOM_NULL,
                            cpmapi.PM_SEM_DISCRETE, units)
    print("pmiAddMetric: hinv.ncpu")
    self.assertTrue(code >= 0)

    # give it a value
    code = log.pmiPutValue("hinv.ncpu", "", "42")
    print("pmiPutValue: hinv.ncpu")
    self.assertTrue(code >= 0)

    # create a metric with instances (kernel.all.load)
    code = log.pmiAddMetric("kernel.all.load", pmid,
                            cpmapi.PM_TYPE_FLOAT, indom,
                            cpmapi.PM_SEM_DISCRETE, units)
    print("pmiAddMetric: kernel.all.load")
    self.assertTrue(code >= 0)
    code = log.pmiAddInstance(indom, "1 minute", 1)
    print("pmiAddInstance: kernel.all.load[1 minute]")
    self.assertTrue(code >= 0)
    code = log.pmiAddInstance(indom, "5 minute", 5)
    print("pmiAddMetric: kernel.all.load[5 minute]")
    self.assertTrue(code >= 0)
    code = log.pmiAddInstance(indom, "15 minute", 15)
    print("pmiAddMetric: kernel.all.load[15 minute]")
    self.assertTrue(code >= 0)

    # give them values
    code = log.pmiPutValue("kernel.all.load", "1 minute", "42.01")
    print("pmiPutValue: kernel.all.load[1 minute]")
    self.assertTrue(code >= 0)
    code = log.pmiPutValue("kernel.all.load", "5 minute", "42.05")
    print("pmiPutValue: kernel.all.load[5 minute]")
    self.assertTrue(code >= 0)
    code = log.pmiPutValue("kernel.all.load", "15 minute", "42.15")
    print("pmiPutValue: kernel.all.load[15 minute]")
    self.assertTrue(code >= 0)

    del log


class TestSequenceFunctions(unittest.TestCase):
    """
    Test driver class for pcp.pmi module verification
    """

    def test_context(self):
        """ Wrapper for test_pmi helper which does the heavy lifting """
        test_pmi(self, OUTFILE)

if __name__ == '__main__':

    if (len(sys.argv) == 2):
        OUTFILE = sys.argv[1]
    else:
        print("Usage: " + sys.argv[0] + " OutFile")
        sys.exit(1)

    sys.argv[1:] = ()

    STS = unittest.main()
    sys.exit(STS)