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archiver_status.py
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archiver_status.py
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#!/usr/bin/env python
import threading
import time
import requests
import json
import pprint
from pcaspy import Driver, SimpleServer, Alarm, Severity
from requests.exceptions import Timeout
from requests.exceptions import ConnectionError
# Try the Customized Configuration first, then the default Configuration
try:
from customized_config import *
except ImportError:
print('*** No customized_config.py is provided so the default configuration is used ***')
appliances = [ {'url': 'http://localhost:17665', 'identity': 'appliance0' } ]
REQUEST_TIMEOUT = 5
REQUEST_INTERVAL = 5
prefix = 'MTEST:'
print('\n')
print('*** This tool is used to monitor status of Archiver Appliance deployed as either single node or cluster ***')
print('\n')
number_of_nodes = len(appliances)
if number_of_nodes == 0:
print('Error: the length of appliances should not be 0, exiting ...')
exit()
if number_of_nodes == 1:
print('Configured to monitor single node of Archiver Appliance')
print(f'url: {appliances[0]["url"]}')
print(f'identity: {appliances[0]["identity"]}')
if number_of_nodes >= 2:
print('Configured to monitor multiple nodes of Archiver Appliance cluster')
print('\n')
print('All nodes in the cluster are as below')
for appliance in appliances:
pprint.pprint(appliance)
print('\n')
# Build PVs for Archiver Appliance status
pvdb = {}
for appliance in appliances:
# PVs for single node do not distinguish identifiers, whereas PVs for multiple nodes distinguish identifiers
pv_identity = '' if number_of_nodes == 1 else appliance['identity']
pv_separator = '' if number_of_nodes == 1 else ':'
# Each appliance has the following PVs
pvdb[f'{pv_identity}{pv_separator}status'] = { 'type': 'string', 'value': '' }
pvdb[f'{pv_identity}{pv_separator}MGMT_uptime'] = { 'type': 'string', 'value': '' }
pvdb[f'{pv_identity}{pv_separator}pvCount'] = { 'type': 'int', 'value': 0 }
pvdb[f'{pv_identity}{pv_separator}connectedPVCount'] = { 'type': 'int', 'value': 0 }
pvdb[f'{pv_identity}{pv_separator}disconnectedPVCount'] = { 'type': 'int', 'value': 0 }
pvdb[f'{pv_identity}{pv_separator}pausedPVCount'] = { 'type': 'int', 'value': 0 }
pvdb[f'{pv_identity}{pv_separator}dataRateGBPerDay'] = { 'type': 'float', 'prec': 2, 'unit': 'GB/day', 'value': 0 }
pvdb[f'{pv_identity}{pv_separator}sts_total_space'] = { 'type': 'float', 'prec': 2, 'unit': 'GB', 'value': 0 }
pvdb[f'{pv_identity}{pv_separator}sts_available_space'] = { 'type': 'float', 'prec': 2, 'unit': 'GB', 'value': 0 }
pvdb[f'{pv_identity}{pv_separator}sts_available_space_percent'] = { 'type': 'float', 'prec': 2, 'unit': '%', 'value': 0 }
pvdb[f'{pv_identity}{pv_separator}mts_total_space'] = { 'type': 'float', 'prec': 2, 'unit': 'GB', 'value': 0 }
pvdb[f'{pv_identity}{pv_separator}mts_available_space'] = { 'type': 'float', 'prec': 2, 'unit': 'GB', 'value': 0 }
pvdb[f'{pv_identity}{pv_separator}mts_available_space_percent'] = { 'type': 'float', 'prec': 2, 'unit': '%', 'value': 0 }
pvdb[f'{pv_identity}{pv_separator}lts_total_space'] = { 'type': 'float', 'prec': 2, 'unit': 'GB', 'value': 0 }
pvdb[f'{pv_identity}{pv_separator}lts_available_space'] = { 'type': 'float', 'prec': 2, 'unit': 'GB', 'value': 0 }
pvdb[f'{pv_identity}{pv_separator}lts_available_space_percent'] = { 'type': 'float', 'prec': 2, 'unit': '%', 'value': 0 }
print('\n')
print('*** The following PVs will be generated ***')
for key, value in pvdb.items():
print(f'{prefix}{key}')
print('\n')
class myDriver(Driver):
def __init__(self):
Driver.__init__(self)
# Create three polling threads for each appliance
for appliance in appliances:
self.tid = threading.Thread(target = self.pollInstanceMetrics, args = (appliance,))
self.tid.daemon = True
self.tid.start()
self.tid = threading.Thread(target = self.pollApplianceMetrics, args = (appliance,))
self.tid.daemon = True
self.tid.start()
self.tid = threading.Thread(target = self.pollStorageMetrics, args = (appliance,))
self.tid.daemon = True
self.tid.start()
# Set alarm and invalid value for instance metrics
def invalidateInstanceMetrics(self, appliance):
pv_identity = '' if number_of_nodes == 1 else appliance['identity']
pv_separator = '' if number_of_nodes == 1 else ':'
self.setParam(f'{pv_identity}{pv_separator}status', 'Disconnected')
self.setParam(f'{pv_identity}{pv_separator}MGMT_uptime', 'Unknown')
self.setParam(f'{pv_identity}{pv_separator}pvCount', 0)
self.setParam(f'{pv_identity}{pv_separator}connectedPVCount', 0)
self.setParam(f'{pv_identity}{pv_separator}disconnectedPVCount', 0)
self.setParam(f'{pv_identity}{pv_separator}dataRateGBPerDay', 0)
self.setParamStatus(f'{pv_identity}{pv_separator}status', Alarm.COMM_ALARM, Severity.MINOR_ALARM)
self.setParamStatus(f'{pv_identity}{pv_separator}MGMT_uptime', Alarm.COMM_ALARM, Severity.MINOR_ALARM)
self.setParamStatus(f'{pv_identity}{pv_separator}pvCount', Alarm.COMM_ALARM, Severity.MINOR_ALARM)
self.setParamStatus(f'{pv_identity}{pv_separator}connectedPVCount', Alarm.COMM_ALARM, Severity.MINOR_ALARM)
self.setParamStatus(f'{pv_identity}{pv_separator}disconnectedPVCount', Alarm.COMM_ALARM, Severity.MINOR_ALARM)
self.setParamStatus(f'{pv_identity}{pv_separator}dataRateGBPerDay', Alarm.COMM_ALARM, Severity.MINOR_ALARM)
self.updatePVs()
# Set alarm and invalid value for appliance metrics
def invalidateApplianceMetrics(self, appliance):
pv_identity = '' if number_of_nodes == 1 else appliance['identity']
pv_separator = '' if number_of_nodes == 1 else ':'
self.setParam(f'{pv_identity}{pv_separator}pausedPVCount', 0)
self.setParamStatus(f'{pv_identity}{pv_separator}pausedPVCount', Alarm.COMM_ALARM, Severity.MINOR_ALARM)
self.updatePVs()
# Set alarm and invalid value for storage metrics
def invalidateStorageMetrics(self, appliance):
pv_identity = '' if number_of_nodes == 1 else appliance['identity']
pv_separator = '' if number_of_nodes == 1 else ':'
self.setParam(f'{pv_identity}{pv_separator}sts_total_space', 0)
self.setParam(f'{pv_identity}{pv_separator}sts_available_space', 0)
self.setParam(f'{pv_identity}{pv_separator}sts_available_space_percent', 0)
self.setParam(f'{pv_identity}{pv_separator}mts_total_space', 0)
self.setParam(f'{pv_identity}{pv_separator}mts_available_space', 0)
self.setParam(f'{pv_identity}{pv_separator}mts_available_space_percent', 0)
self.setParam(f'{pv_identity}{pv_separator}lts_total_space', 0)
self.setParam(f'{pv_identity}{pv_separator}lts_available_space', 0)
self.setParam(f'{pv_identity}{pv_separator}lts_available_space_percent', 0)
self.setParamStatus(f'{pv_identity}{pv_separator}sts_total_space', Alarm.COMM_ALARM, Severity.MINOR_ALARM)
self.setParamStatus(f'{pv_identity}{pv_separator}sts_available_space', Alarm.COMM_ALARM, Severity.MINOR_ALARM)
self.setParamStatus(f'{pv_identity}{pv_separator}sts_available_space_percent', Alarm.COMM_ALARM, Severity.MINOR_ALARM)
self.setParamStatus(f'{pv_identity}{pv_separator}mts_total_space', Alarm.COMM_ALARM, Severity.MINOR_ALARM)
self.setParamStatus(f'{pv_identity}{pv_separator}mts_available_space', Alarm.COMM_ALARM, Severity.MINOR_ALARM)
self.setParamStatus(f'{pv_identity}{pv_separator}mts_available_space_percent', Alarm.COMM_ALARM, Severity.MINOR_ALARM)
self.setParamStatus(f'{pv_identity}{pv_separator}lts_total_space', Alarm.COMM_ALARM, Severity.MINOR_ALARM)
self.setParamStatus(f'{pv_identity}{pv_separator}lts_available_space', Alarm.COMM_ALARM, Severity.MINOR_ALARM)
self.setParamStatus(f'{pv_identity}{pv_separator}lts_available_space_percent', Alarm.COMM_ALARM, Severity.MINOR_ALARM)
self.updatePVs()
# Polling thread for instance metrics
def pollInstanceMetrics(self, appliance):
url = appliance["url"]
identity = appliance["identity"]
GET_INSTANCE_METRICS_URL = f'{url}/mgmt/bpl/getInstanceMetrics'
while True:
try:
# Get instance metrics data
response = requests.get(GET_INSTANCE_METRICS_URL, timeout = REQUEST_TIMEOUT)
if response.status_code < 200 or response.status_code >= 300:
print('Appliance ' + identity + ': ' + 'Bad response status code ' + str(response.status_code) + ' for instance metrics data')
self.invalidateInstanceMetrics(appliance)
time.sleep(REQUEST_INTERVAL)
continue
text = response.text
dataList = json.loads(text)
found = False
for item in dataList:
if 'instance' in item and item['instance'] == identity:
data = item
found = True
break
if not found:
print(f'Appliance {identity}: Instance data is not found')
self.invalidateInstanceMetrics(appliance)
time.sleep(REQUEST_INTERVAL)
continue
if not('status' in data):
print(f'Appliance {identity}: Instance metrics data does not include status')
self.invalidateInstanceMetrics(appliance)
time.sleep(REQUEST_INTERVAL)
continue
if not('MGMT_uptime' in data):
print(f'Appliance {identity}: Instance metrics data does not include MGMT_uptime')
self.invalidateInstanceMetrics(appliance)
time.sleep(REQUEST_INTERVAL)
continue
if not('pvCount' in data):
print(f'Appliance {identity}: Instance metrics data does not include pvCount')
self.invalidateInstanceMetrics(appliance)
time.sleep(REQUEST_INTERVAL)
continue
if not('connectedPVCount' in data):
print(f'Appliance {identity}: Instance metrics data does not include connectedPVCount')
self.invalidateInstanceMetrics(appliance)
time.sleep(REQUEST_INTERVAL)
continue
if not('disconnectedPVCount' in data):
print(f'Appliance {identity}: Instance metrics data does not include disconnectedPVCount')
self.invalidateInstanceMetrics(appliance)
time.sleep(REQUEST_INTERVAL)
continue
status = data['status'] # string
MGMT_uptime = data['MGMT_uptime'] # string
pvCount = int(data['pvCount']) # int
connectedPVCount = int(data['connectedPVCount']) # int
disconnectedPVCount = int(data['disconnectedPVCount']) # int
dataRateGBPerDay = float(data['dataRateGBPerDay']) # float
# print(status)
# print(MGMT_uptime)
# print(pvCount)
# print(connectedPVCount)
# print(disconnectedPVCount)
# print(dataRateGBPerDay)
pv_identity = '' if number_of_nodes == 1 else appliance['identity']
pv_separator = '' if number_of_nodes == 1 else ':'
self.setParam(f'{pv_identity}{pv_separator}status', status)
self.setParam(f'{pv_identity}{pv_separator}MGMT_uptime', MGMT_uptime)
self.setParam(f'{pv_identity}{pv_separator}pvCount', pvCount)
self.setParam(f'{pv_identity}{pv_separator}connectedPVCount', connectedPVCount)
self.setParam(f'{pv_identity}{pv_separator}disconnectedPVCount', disconnectedPVCount)
self.setParam(f'{pv_identity}{pv_separator}dataRateGBPerDay', dataRateGBPerDay)
# do updates so clients see the changes
self.updatePVs()
except Timeout:
print(f'Appliance {identity}: Request for instance metrics data has timed out')
self.invalidateInstanceMetrics(appliance)
except ConnectionError:
print(f'Appliance {identity}: Connection for instance metrics data has been refused')
self.invalidateInstanceMetrics(appliance)
# Delay 5 seconds
time.sleep(REQUEST_INTERVAL)
# Polling thread for appliance metrics
def pollApplianceMetrics(self, appliance):
url = appliance["url"]
identity = appliance["identity"]
GET_APPLIANCE_METRICS_FOR_APPLIANCE_URL = f'{url}/mgmt/bpl/getApplianceMetricsForAppliance?appliance={identity}'
while True:
try:
# Get storage metrics data
response = requests.get(GET_APPLIANCE_METRICS_FOR_APPLIANCE_URL, timeout = REQUEST_TIMEOUT)
if response.status_code < 200 or response.status_code >= 300:
print('Appliance ' + identity + ': ' + 'Bad response status code ' + str(response.status_code) + ' for appliance metrics data')
self.invalidateApplianceMetrics(appliance)
time.sleep(REQUEST_INTERVAL)
continue
text = response.text
if not text:
print('Appliance ' + identity + ': ' + 'response text for appliance metrics data is empty, maybe identity is not correct')
self.invalidateApplianceMetrics(appliance)
time.sleep(REQUEST_INTERVAL)
continue
data = json.loads(text)
if len(data) == 0:
print(f'Appliance {identity}: Empty text response for appliance metrics data')
self.invalidateApplianceMetrics(appliance)
time.sleep(REQUEST_INTERVAL)
continue
for item in data:
if item['name'] == 'Paused PV count':
pausedPVCount = int(item['value'])
# print(pausedPVCount)
pv_identity = '' if number_of_nodes == 1 else appliance['identity']
pv_separator = '' if number_of_nodes == 1 else ':'
self.setParam(f'{pv_identity}{pv_separator}pausedPVCount', pausedPVCount)
# do updates so clients see the changes
self.updatePVs()
except Timeout:
print(f'Appliance {identity}: Request for appliance metrics data has timed out')
self.invalidateApplianceMetrics(appliance)
except ConnectionError:
print(f'Appliance {identity}: Connection for appliance metrics data has been refused')
self.invalidateApplianceMetrics(appliance)
# Delay 5 seconds
time.sleep(REQUEST_INTERVAL)
# Polling thread for storage metrics
def pollStorageMetrics(self, appliance):
url = appliance["url"]
identity = appliance["identity"]
GET_STORAGE_METRICS_FOR_APPLIANCE_URL = f'{url}/mgmt/bpl/getStorageMetricsForAppliance?appliance={identity}'
while True:
try:
# Get storage metrics data
response = requests.get(GET_STORAGE_METRICS_FOR_APPLIANCE_URL, timeout = REQUEST_TIMEOUT)
if response.status_code < 200 or response.status_code >= 300:
print('Appliance ' + identity + ': ' + 'Bad response status code ' + str(response.status_code) + ' for storage metrics data')
self.invalidateStorageMetrics(appliance)
time.sleep(REQUEST_INTERVAL)
continue
text = response.text
if not text:
print('Appliance ' + identity + ': ' + 'response text for storage metrics data is empty, maybe identity is not correct')
self.invalidateStorageMetrics(appliance)
time.sleep(REQUEST_INTERVAL)
continue
data = json.loads(text)
if len(data) == 0:
print(f'Appliance {identity}: Empty text response for storage metrics data')
self.invalidateStorageMetrics(appliance)
time.sleep(REQUEST_INTERVAL)
continue
for item in data:
if item['name'] == 'STS':
sts_total_space = float(item['total_space'].replace(',', ''))
sts_available_space = float(item['available_space'].replace(',', ''))
sts_available_space_percent = float(item['available_space_percent'].replace(',', ''))
if item['name'] == 'MTS':
mts_total_space = float(item['total_space'].replace(',', ''))
mts_available_space = float(item['available_space'].replace(',', ''))
mts_available_space_percent = float(item['available_space_percent'].replace(',', ''))
if item['name'] == 'LTS':
lts_total_space = float(item['total_space'].replace(',', ''))
lts_available_space = float(item['available_space'].replace(',', ''))
lts_available_space_percent = float(item['available_space_percent'].replace(',', ''))
# print(sts_total_space)
# print(sts_available_space)
# print(sts_available_space_percent)
# print(mts_total_space)
# print(mts_available_space)
# print(mts_available_space_percent)
# print(lts_total_space)
# print(lts_available_space)
# print(lts_available_space_percent)
pv_identity = '' if number_of_nodes == 1 else appliance['identity']
pv_separator = '' if number_of_nodes == 1 else ':'
self.setParam(f'{pv_identity}{pv_separator}sts_total_space', sts_total_space)
self.setParam(f'{pv_identity}{pv_separator}sts_available_space', sts_available_space)
self.setParam(f'{pv_identity}{pv_separator}sts_available_space_percent', sts_available_space_percent)
self.setParam(f'{pv_identity}{pv_separator}mts_total_space', mts_total_space)
self.setParam(f'{pv_identity}{pv_separator}mts_available_space', mts_available_space)
self.setParam(f'{pv_identity}{pv_separator}mts_available_space_percent', mts_available_space_percent)
self.setParam(f'{pv_identity}{pv_separator}lts_total_space', lts_total_space)
self.setParam(f'{pv_identity}{pv_separator}lts_available_space', lts_available_space)
self.setParam(f'{pv_identity}{pv_separator}lts_available_space_percent', lts_available_space_percent)
# do updates so clients see the changes
self.updatePVs()
except Timeout:
print(f'Appliance {identity}: Request for storage metrics data has timed out')
self.invalidateStorageMetrics(appliance)
except ConnectionError:
print(f'Appliance {identity}: Connection for storage metrics data has been refused')
self.invalidateStorageMetrics(appliance)
# Delay 5 seconds
time.sleep(REQUEST_INTERVAL)
if __name__ == '__main__':
server = SimpleServer()
server.createPV(prefix, pvdb)
driver = myDriver()
# process CA transactions
while True:
server.process(0.1)