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# Copyright 2016 IBM Corp.
#
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
""" Wrappers to parse the PCM JSON data from IBM.Host Resource Manager. """
import json
class LparInfo(object):
"""Represents a monitor sample from the IBM.Host Resource Manager.
The Lpar JSON utilization data has the following structure:
- LparUtil
- LparMemory
lpar_metrics are generally collected once every two minutes, as opposed
to the other data which is collected every 30 seconds.
"""
def __init__(self, raw_json):
data = json.loads(raw_json)
self._lparuuid_to_util_dict = dict()
lpar_util_list = list()
lpar_metric_list_rsct = data.get('lparUtil')
for lpar_metrics_rsct in lpar_metric_list_rsct:
if 'errorInfo' in lpar_metrics_rsct:
error_code = lpar_metrics_rsct['errorInfo']['errorId']
if error_code in ('6001', '6003'):
self._create_lpar_memory_util_for_errored_vm(
error_code, lpar_metrics_rsct)
else:
# Any other errors that might get introduced at neo-rest.
continue
lpar_util = LparUtil(lpar_metrics_rsct)
lpar_util_list.append(lpar_util)
self._lparuuid_to_util_dict[lpar_util.uuid] = lpar_util
self._lpars_util = lpar_util_list
def find(self, lpar_uuid):
return self._lparuuid_to_util_dict.get(lpar_uuid, None)
def _create_lpar_memory_util_for_errored_vm(
self, error_code, lpar_metrics_rsct):
if error_code == '6001':
# If LPAR is powered off, then no memory is being used.
memory = dict(pctRealMemFree=100,
vmPgInRate=0,
vmPgOutRate=0,
vmPgSpInRate=0,
vmPgSpOutRate=0)
elif error_code == '6003':
# If LPAR has inactive RMC, then assume all memory is being used.
memory = dict(pctRealMemFree=0)
lpar_metrics_rsct['memory'] = memory
@property
def lpars_util(self):
return self._lpars_util
class LparUtil(object):
"""Represents individual Lpar metric information. """
def __init__(self, lpar_util):
self._uuid = lpar_util.get('uuid')
self._lpar_id = lpar_util.get('id')
self._name = lpar_util.get('name')
self._timestamp = lpar_util.get('timestamp')
self._memory = LparMemory(lpar_util.get('memory'))
@property
def lpar_id(self):
return self._lpar_id
@property
def uuid(self):
return self._uuid
@property
def name(self):
return self._name
@property
def timestamp(self):
return self._timestamp
@property
def memory(self):
return self._memory
class LparMemory(object):
"""Represents information on Lpar memory utilization """
def __init__(self, memory):
self._pct_real_mem_avbl = memory.get('pctRealMemAvbl')
self._total_pg_count = memory.get('totalPgSpSizeCount')
self._free_pg_count = memory.get('totalPgSpFreeCount')
self._active_pg_count = memory.get('vmActivePgCount')
self._real_mem_size_bytes = memory.get('realMemSizeBytes')
self._pct_real_mem_free = memory.get('pctRealMemFree')
self._vm_pg_in_rate = memory.get('vmPgInRate')
self._vm_pg_out_rate = memory.get('vmPgOutRate')
self._vm_pg_swap_in_rate = memory.get('vmPgSpInRate')
self._vm_pg_swap_out_rate = memory.get('vmPgSpOutRate')
@property
def pct_real_mem_avbl(self):
return self._pct_real_mem_avbl
@property
def total_pg_count(self):
return self._total_pg_count
@property
def free_pg_count(self):
return self._free_pg_count
@property
def active_pg_count(self):
return self._active_pg_count
@property
def real_mem_size_bytes(self):
return self._real_mem_size_bytes
@property
def pct_real_mem_free(self):
return self._pct_real_mem_free
@property
def vm_pg_in_rate(self):
return self._vm_pg_in_rate
@property
def vm_pg_out_rate(self):
return self._vm_pg_out_rate
@property
def vm_pg_swap_in_rate(self):
return self._vm_pg_swap_in_rate
@property
def vm_pg_swap_out_rate(self):
return self._vm_pg_swap_out_rate
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