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""" Test metric value extraction/reporting using the pcp.pmcc module """
#
# Copyright (C) 2013-2014 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 unittest
from pcp import pmcc, pmapi
CPU_METRICS = [ "kernel.all.cpu.sys", "kernel.all.cpu.user",
"kernel.all.cpu.nice", "kernel.all.cpu.idle", ]
MEM_METRICS = [ "mem.physmem", "mem.freemem", ]
DISK_METRICS = [ "disk.all.read", "disk.all.write", "disk.dev.read", ]
class TestPrinter(pmcc.MetricGroupPrinter):
""" Report latest values from group manager """
def unavailable(self, metric):
""" Determine whether metric has values for rate conversion """
if metric.netValues == None or len(metric.netValues) == 0:
return 1
if metric.netPrevValues == None or len(metric.netPrevValues) == 0:
return 1
return 0
def cpu_print(self, group):
""" Report on processor metric group """
ticks = {}
total = 0.0
for name in CPU_METRICS:
metric = group[name]
if self.unavailable(metric):
ticks.update({ name : None })
continue
# metric.value is the result from pmFetch
# metric.netValues is (inst, name, value) from computeValues
values = dict(map(lambda x: (x[1], x[2]), metric.netValues))
prevs = dict(map(lambda x: (x[1], x[2]), metric.netPrevValues))
inst_val = reduce(lambda x, y: x + y,
map(lambda x: values[x] - prevs[x], values.keys()))
ticks.update({ name : inst_val })
total += inst_val
for name in CPU_METRICS:
if ticks[name] != None:
print(" ", name, round(ticks[name] / total * 100, 2), "%")
else:
print(" ", name, "? %") # no value, first sample usually
def mem_print(self, group):
""" Report on memory metric group """
for name in MEM_METRICS:
metric = group[name]
values = dict(map(lambda x: (x[1], x[2]), metric.netValues))
for inst_name in values.keys():
inst_val = values[inst_name]
unit_str = metric.ctx.pmUnitsStr(metric.desc.contents.units)
print(" ", name, inst_val, unit_str)
def disk_print(self, group):
""" Report on disk metric group """
for name in DISK_METRICS:
metric = group[name]
values = dict(map(lambda x: (x[1], x[2]), metric.netValues))
for inst_name in values.keys():
inst_val = values[inst_name]
unit_str = metric.ctx.pmUnitsStr(metric.desc.contents.units)
print(" ", name, inst_name, inst_val, unit_str)
def report(self, manager):
""" Overrides the base class report, called after each fetch """
self.cpu_print(manager["cpu"])
self.mem_print(manager["mem"])
self.disk_print(manager["disk"])
class TestOptions(pmapi.pmOptions):
""" Setup a command line option processing object for the test """
def __init__(self):
pmapi.pmOptions.__init__(self, "A:a:D:h:O:S:s:T:t:VZ:z?")
self.pmSetLongOptionHeader("General options")
self.pmSetLongOptionAlign()
self.pmSetLongOptionArchive()
self.pmSetLongOptionDebug()
self.pmSetLongOptionHost()
self.pmSetLongOptionOrigin()
self.pmSetLongOptionStart()
self.pmSetLongOptionSamples()
self.pmSetLongOptionFinish()
self.pmSetLongOptionInterval()
self.pmSetLongOptionVersion()
self.pmSetLongOptionTimeZone()
self.pmSetLongOptionHostZone()
self.pmSetLongOptionHelp()
class TestConvenienceClasses(unittest.TestCase):
"""
Test driver class for pcp.pmcc module verification
"""
def test_context(self):
""" Create a metric group manager, add some groups,
then cycle, fetching and printing, depending on
command line arguments presented.
"""
try:
manager = pmcc.MetricGroupManager.builder(OPTS, ARGS)
except pmapi.pmUsageErr as usage:
return usage.message()
self.assertTrue(manager != None)
manager.printer = TestPrinter()
# Each entry is a MetricGroup
manager["cpu"] = CPU_METRICS
manager["mem"] = MEM_METRICS
manager["disk"] = DISK_METRICS
# Real QA test starts here ;)
return manager.run()
if __name__ == '__main__':
import sys
import copy
ARGS = copy.deepcopy(sys.argv)
OPTS = TestOptions()
sys.argv[1:] = ()
STS = unittest.main()
sys.exit(STS)
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