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#!/usr/bin/env python3
# ============LICENSE_START=======================================================
# Copyright 2018-2020 AT&T Intellectual Property, Inc. All rights reserved.
# Copyright (c) 2019 Pantheon.tech. All rights reserved.
# Copyright 2020 Deutsche Telekom. All rights reserved.
# Copyright 2021 Samsung Electronics. All rights reserved.
# Copyright 2021 Fujitsu Ltd.
# ================================================================================
# 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.
# ============LICENSE_END=========================================================
#
# Author Prakash Hosangady (ph553f)
# Read the hb_common table
# Update the state to RECONFIGURATION and save the hb_common table
import os
import os.path as path
import socket
import yaml
import json
import time
import psycopg2
# use the fully qualified name here to let monkeypatching work
# from .mod.trapd_get_cbs_config import get_cbs_config
import mod.trapd_get_cbs_config
import mod.trapd_settings as tds
hb_properties_file = path.abspath(path.join(__file__, "../config/hbproperties.yaml"))
def postgres_db_open(username, password, host, port, database_name):
envPytest = os.getenv('pytest', "")
if envPytest == 'test':
return True
try:
connection = psycopg2.connect(database=database_name, user=username, password=password, host=host, port=port)
except Exception as e:
print("HB_Notif::postgress connect error: %s" % e)
connection = True
return connection
def db_table_creation_check(connection_db, table_name):
envPytest = os.getenv('pytest', "")
if envPytest == 'test':
return True
cur = None
try:
cur = connection_db.cursor()
cur.execute("SELECT * FROM information_schema.tables WHERE table_name = %s", (table_name,))
database_names = cur.fetchone()
if (database_names is not None) and (table_name in database_names):
print(f"FOUND the table {table_name}")
print("HB_Notif::Postgres already has table - %s" % table_name)
return True
else:
print(f"did NOT find the table {table_name}")
print("HB_Notif::Postgres does not have table - %s" % table_name)
return False
except psycopg2.DatabaseError as e:
print('COMMON:Error %s' % e)
finally:
if cur:
cur.close()
def commit_and_close_db(connection_db):
envPytest = os.getenv('pytest', "")
if envPytest == 'test':
return True
try:
connection_db.commit() # <--- makes sure the change is shown in the database
connection_db.close()
return True
except psycopg2.DatabaseError as e:
return False
def read_hb_properties_default():
# Read the hbproperties.yaml for postgress and CBS related data
s = open(hb_properties_file, 'r')
a = yaml.full_load(s)
if ((os.getenv('pg_ipAddress') is None) or (os.getenv('pg_portNum') is None) or (
os.getenv('pg_userName') is None) or (os.getenv('pg_passwd') is None)):
ip_address = a['pg_ipAddress']
port_num = a['pg_portNum']
user_name = a['pg_userName']
password = a['pg_passwd']
else:
ip_address = os.getenv('pg_ipAddress')
port_num = os.getenv('pg_portNum')
user_name = os.getenv('pg_userName')
password = os.getenv('pg_passwd')
dbName = a['pg_dbName']
db_name = dbName.lower()
cbs_polling_required = a['CBS_polling_allowed']
cbs_polling_interval = a['CBS_polling_interval']
s.close()
# TODO: there is a mismatch here between read_hb_properties_default and read_hb_properties.
# read_hb_properties() forces all of the variables returned here to be strings, while the code here does not.
return ip_address, port_num, user_name, password, db_name, cbs_polling_required, cbs_polling_interval
def read_hb_properties(jsfile):
try:
with open(jsfile, 'r') as outfile:
cfg = json.load(outfile)
except Exception as err:
print("Json file read error - %s" % err)
return read_hb_properties_default()
try:
ip_address = str(cfg['pg_ipAddress'])
port_num = str(cfg['pg_portNum'])
user_name = str(cfg['pg_userName'])
password = str(cfg['pg_passwd'])
dbName = str(cfg['pg_dbName'])
db_name = dbName.lower()
cbs_polling_required = str(cfg['CBS_polling_allowed'])
cbs_polling_interval = str(cfg['CBS_polling_interval'])
if "SERVICE_NAME" in cfg:
os.environ['SERVICE_NAME'] = str(cfg['SERVICE_NAME'])
except Exception as err:
print("Json file read parameter error - %s" % err)
return read_hb_properties_default()
return ip_address, port_num, user_name, password, db_name, cbs_polling_required, cbs_polling_interval
def read_hb_common(user_name, password, ip_address, port_num, db_name):
envPytest = os.getenv('pytest', "")
if envPytest == 'test':
hbc_pid = 10
hbc_srcName = "srvc_name"
hbc_time = 1541234567
hbc_state = "RUNNING"
return hbc_pid, hbc_state, hbc_srcName, hbc_time
connection_db = postgres_db_open(user_name, password, ip_address, port_num, db_name)
cur = connection_db.cursor()
cur.execute("SELECT process_id, source_name, last_accessed_time, current_state FROM hb_common")
rows = cur.fetchall()
# TODO: What if rows returned None or empty?
print("HB_Notif::hb_common contents - %s" % rows)
hbc_pid = rows[0][0]
hbc_srcName = rows[0][1]
hbc_time = rows[0][2]
hbc_state = rows[0][3]
commit_and_close_db(connection_db)
cur.close()
return hbc_pid, hbc_state, hbc_srcName, hbc_time
def update_hb_common(update_flg, process_id, state, user_name, password, ip_address, port_num, db_name):
current_time = int(round(time.time()))
source_name = socket.gethostname()
source_name = source_name + "-" + str(os.getenv('SERVICE_NAME', ""))
envPytest = os.getenv('pytest', "")
if envPytest == 'test':
return True
connection_db = postgres_db_open(user_name, password, ip_address, port_num, db_name)
cur = connection_db.cursor()
cur.execute("UPDATE hb_common SET LAST_ACCESSED_TIME = %s, CURRENT_STATE = %s WHERE "
"PROCESS_ID = %s AND SOURCE_NAME = %s", (current_time, state, process_id, source_name))
commit_and_close_db(connection_db)
cur.close()
return True
def fetch_json_file(download_json="../etc/download1.json", config_json="../etc/config.json"):
# use the fully qualified name here to let monkeypatching work
# if get_cbs_config():
if mod.trapd_get_cbs_config.get_cbs_config():
current_runtime_config_file_name = download_json
envPytest = os.getenv('pytest', "")
if envPytest == 'test':
jsfile = "../etc/config.json"
return jsfile
print("Config_N:current config logged to : %s" % current_runtime_config_file_name)
with open(current_runtime_config_file_name, 'w') as outfile:
json.dump(tds.c_config, outfile)
jsfile = current_runtime_config_file_name
else:
print("MSHBD:CBS Config not available, using local config")
jsfile = config_json
print("Config_N: The json file is - %s" % jsfile)
return jsfile
def config_notif_run():
jsfile = fetch_json_file()
ip_address, port_num, user_name, password, db_name, cbs_polling_required, cbs_polling_interval = read_hb_properties(
jsfile)
envPytest = os.getenv('pytest', "")
if envPytest == 'test':
return True
connection_db = postgres_db_open(user_name, password, ip_address, port_num, db_name)
cur = connection_db.cursor()
if db_table_creation_check(connection_db, "hb_common") is False:
print("HB_Notif::ERROR::hb_common table not exists - No config download")
connection_db.close()
else:
hbc_pid, hbc_state, hbc_srcName, hbc_time = read_hb_common(user_name, password, ip_address, port_num, db_name)
state = "RECONFIGURATION"
update_flg = 1
ret = update_hb_common(update_flg, hbc_pid, state, user_name, password, ip_address, port_num, db_name)
# TODO: There is no way for update_hb_common() to return false
if ret:
print("HB_Notif::hb_common table updated with RECONFIGURATION state")
commit_and_close_db(connection_db)
return True
else:
print("HB_Notif::Failure updating hb_common table")
commit_and_close_db(connection_db)
return False
cur.close()
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