525 lines
26 KiB
Python
525 lines
26 KiB
Python
import time
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from datetime import datetime, timedelta
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from decimal import Decimal
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import mysql.connector
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from multiprocessing import Pool
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import random
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import config
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########################################################################################################################
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# PROCEDURES
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# Step 1: get all tenants
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# Step 2: Create multiprocessing pool to call worker in parallel
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########################################################################################################################
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def main(logger):
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while True:
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# the outermost while loop
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################################################################################################################
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# Step 1: get all tenants
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################################################################################################################
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cnx_system_db = None
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cursor_system_db = None
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try:
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cnx_system_db = mysql.connector.connect(**config.myems_system_db)
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cursor_system_db = cnx_system_db.cursor()
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except Exception as e:
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logger.error("Error in step 1.1 of tenant_energy_input_item.main " + str(e))
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if cursor_system_db:
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cursor_system_db.close()
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if cnx_system_db:
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cnx_system_db.close()
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# sleep and continue the outer loop to reconnect the database
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time.sleep(60)
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continue
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print("Connected to MyEMS System Database")
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tenant_list = list()
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try:
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cursor_system_db.execute(" SELECT id, name "
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" FROM tbl_tenants "
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" ORDER BY id ")
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rows_tenants = cursor_system_db.fetchall()
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if rows_tenants is None or len(rows_tenants) == 0:
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print("There isn't any tenants ")
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# sleep and continue the outer loop to reconnect the database
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time.sleep(60)
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continue
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for row in rows_tenants:
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tenant_list.append({"id": row[0], "name": row[1]})
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except Exception as e:
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logger.error("Error in step 1.2 of tenant_energy_input_item.main " + str(e))
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# sleep and continue the outer loop to reconnect the database
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time.sleep(60)
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continue
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finally:
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if cursor_system_db:
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cursor_system_db.close()
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if cnx_system_db:
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cnx_system_db.close()
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print("Got all tenants in MyEMS System Database")
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# shuffle the tenant list for randomly calculating the hourly values
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random.shuffle(tenant_list)
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################################################################################################################
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# Step 2: Create multiprocessing pool to call worker in parallel
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################################################################################################################
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p = Pool(processes=config.pool_size)
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error_list = p.map(worker, tenant_list)
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p.close()
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p.join()
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for error in error_list:
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if error is not None and len(error) > 0:
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logger.error(error)
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print("go to sleep 300 seconds...")
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time.sleep(300)
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print("wake from sleep, and continue to work...")
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# end of outer while
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########################################################################################################################
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# PROCEDURES:
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# Step 1: get all input meters associated with the tenant
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# Step 2: get all input virtual meters associated with the tenant
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# Step 3: get all input offline meters associated with the tenant
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# Step 4: determine start datetime and end datetime to aggregate
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# Step 5: for each meter in list, get energy input data from energy database
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# Step 6: for each virtual meter in list, get energy input data from energy database
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# Step 7: for each offline meter in list, get energy input data from energy database
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# Step 8: determine common time slot to aggregate
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# Step 9: aggregate energy data in the common time slot by energy items and hourly
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# Step 10: save energy data to energy database
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#
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# NOTE: returns None or the error string because that the logger object cannot be passed in as parameter
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########################################################################################################################
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def worker(tenant):
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####################################################################################################################
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# Step 1: get all input meters associated with the tenant
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####################################################################################################################
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print("Step 1: get all input meters associated with the tenant " + str(tenant['name']))
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meter_list = list()
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cnx_system_db = None
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cursor_system_db = None
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try:
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cnx_system_db = mysql.connector.connect(**config.myems_system_db)
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cursor_system_db = cnx_system_db.cursor()
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except Exception as e:
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error_string = "Error in step 1.1 of tenant_energy_input_item.worker " + str(e)
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if cursor_system_db:
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cursor_system_db.close()
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if cnx_system_db:
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cnx_system_db.close()
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print(error_string)
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return error_string
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try:
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cursor_system_db.execute(" SELECT m.id, m.name, m.energy_item_id "
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" FROM tbl_meters m, tbl_tenants_meters tm "
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" WHERE m.id = tm.meter_id "
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" AND m.is_counted = 1 "
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" AND m.energy_item_id is NOT NULL "
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" AND tm.tenant_id = %s ",
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(tenant['id'],))
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rows_meters = cursor_system_db.fetchall()
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if rows_meters is not None and len(rows_meters) > 0:
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for row in rows_meters:
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meter_list.append({"id": row[0],
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"name": row[1],
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"energy_item_id": row[2]})
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except Exception as e:
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error_string = "Error in step 1.2 of tenant_energy_input_item.worker " + str(e)
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if cursor_system_db:
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cursor_system_db.close()
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if cnx_system_db:
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cnx_system_db.close()
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print(error_string)
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return error_string
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####################################################################################################################
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# Step 2: get all input virtual meters associated with the tenant
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####################################################################################################################
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print("Step 2: get all input virtual meters associated with the tenant")
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virtual_meter_list = list()
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try:
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cursor_system_db.execute(" SELECT m.id, m.name, m.energy_item_id "
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" FROM tbl_virtual_meters m, tbl_tenants_virtual_meters tm "
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" WHERE m.id = tm.virtual_meter_id "
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" AND m.energy_item_id is NOT NULL "
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" AND m.is_counted = 1 "
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" AND tm.tenant_id = %s ",
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(tenant['id'],))
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rows_virtual_meters = cursor_system_db.fetchall()
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if rows_virtual_meters is not None and len(rows_virtual_meters) > 0:
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for row in rows_virtual_meters:
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virtual_meter_list.append({"id": row[0],
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"name": row[1],
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"energy_item_id": row[2]})
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except Exception as e:
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error_string = "Error in step 2.1 of tenant_energy_input_item.worker " + str(e)
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if cursor_system_db:
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cursor_system_db.close()
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if cnx_system_db:
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cnx_system_db.close()
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print(error_string)
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return error_string
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####################################################################################################################
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# Step 3: get all input offline meters associated with the tenant
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####################################################################################################################
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print("Step 3: get all input offline meters associated with the tenant")
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offline_meter_list = list()
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try:
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cursor_system_db.execute(" SELECT m.id, m.name, m.energy_item_id "
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" FROM tbl_offline_meters m, tbl_tenants_offline_meters tm "
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" WHERE m.id = tm.offline_meter_id "
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" AND m.energy_item_id is NOT NULL "
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" AND m.is_counted = 1 "
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" AND tm.tenant_id = %s ",
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(tenant['id'],))
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rows_offline_meters = cursor_system_db.fetchall()
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if rows_offline_meters is not None and len(rows_offline_meters) > 0:
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for row in rows_offline_meters:
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offline_meter_list.append({"id": row[0],
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"name": row[1],
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"energy_item_id": row[2]})
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except Exception as e:
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error_string = "Error in step 3.1 of tenant_energy_input_item.worker " + str(e)
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print(error_string)
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return error_string
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finally:
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if cursor_system_db:
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cursor_system_db.close()
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if cnx_system_db:
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cnx_system_db.close()
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####################################################################################################################
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# stop to the next tenant if this tenant is empty
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####################################################################################################################
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if (meter_list is None or len(meter_list) == 0) and \
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(virtual_meter_list is None or len(virtual_meter_list) == 0) and \
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(offline_meter_list is None or len(offline_meter_list) == 0):
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print("This is an empty tenant ")
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return None
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####################################################################################################################
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# Step 4: determine start datetime and end datetime to aggregate
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####################################################################################################################
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print("Step 4: determine start datetime and end datetime to aggregate")
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cnx_energy_db = None
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cursor_energy_db = None
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try:
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cnx_energy_db = mysql.connector.connect(**config.myems_energy_db)
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cursor_energy_db = cnx_energy_db.cursor()
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except Exception as e:
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error_string = "Error in step 4.1 of tenant_energy_input_item.worker " + str(e)
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if cursor_energy_db:
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cursor_energy_db.close()
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if cnx_energy_db:
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cnx_energy_db.close()
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print(error_string)
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return error_string
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try:
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query = (" SELECT MAX(start_datetime_utc) "
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" FROM tbl_tenant_input_item_hourly "
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" WHERE tenant_id = %s ")
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cursor_energy_db.execute(query, (tenant['id'],))
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row_datetime = cursor_energy_db.fetchone()
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start_datetime_utc = datetime.strptime(config.start_datetime_utc, '%Y-%m-%d %H:%M:%S')
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start_datetime_utc = start_datetime_utc.replace(minute=0, second=0, microsecond=0, tzinfo=None)
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if row_datetime is not None and len(row_datetime) > 0 and isinstance(row_datetime[0], datetime):
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# replace second and microsecond with 0
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# note: do not replace minute in case of calculating in half hourly
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start_datetime_utc = row_datetime[0].replace(second=0, microsecond=0, tzinfo=None)
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# start from the next time slot
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start_datetime_utc += timedelta(minutes=config.minutes_to_count)
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end_datetime_utc = datetime.utcnow().replace(second=0, microsecond=0, tzinfo=None)
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print("start_datetime_utc: " + start_datetime_utc.isoformat()[0:19]
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+ "end_datetime_utc: " + end_datetime_utc.isoformat()[0:19])
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except Exception as e:
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error_string = "Error in step 4.2 of tenant_energy_input_item.worker " + str(e)
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if cursor_energy_db:
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cursor_energy_db.close()
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if cnx_energy_db:
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cnx_energy_db.close()
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print(error_string)
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return error_string
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####################################################################################################################
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# Step 5: for each meter in list, get energy input data from energy database
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####################################################################################################################
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energy_meter_hourly = dict()
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try:
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if meter_list is not None and len(meter_list) > 0:
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for meter in meter_list:
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meter_id = str(meter['id'])
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query = (" SELECT start_datetime_utc, actual_value "
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" FROM tbl_meter_hourly "
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" WHERE meter_id = %s "
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" AND start_datetime_utc >= %s "
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" AND start_datetime_utc < %s "
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" ORDER BY start_datetime_utc ")
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cursor_energy_db.execute(query, (meter_id, start_datetime_utc, end_datetime_utc,))
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rows_energy_values = cursor_energy_db.fetchall()
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if rows_energy_values is None or len(rows_energy_values) == 0:
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energy_meter_hourly[meter_id] = None
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else:
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energy_meter_hourly[meter_id] = dict()
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for row_energy_value in rows_energy_values:
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energy_meter_hourly[meter_id][row_energy_value[0]] = row_energy_value[1]
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except Exception as e:
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error_string = "Error in step 5.1 of tenant_energy_input_item.worker " + str(e)
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if cursor_energy_db:
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cursor_energy_db.close()
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if cnx_energy_db:
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cnx_energy_db.close()
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print(error_string)
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return error_string
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####################################################################################################################
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# Step 6: for each virtual meter in list, get energy input data from energy database
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####################################################################################################################
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energy_virtual_meter_hourly = dict()
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if virtual_meter_list is not None and len(virtual_meter_list) > 0:
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try:
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for virtual_meter in virtual_meter_list:
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virtual_meter_id = str(virtual_meter['id'])
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query = (" SELECT start_datetime_utc, actual_value "
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" FROM tbl_virtual_meter_hourly "
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" WHERE virtual_meter_id = %s "
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" AND start_datetime_utc >= %s "
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" AND start_datetime_utc < %s "
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" ORDER BY start_datetime_utc ")
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cursor_energy_db.execute(query, (virtual_meter_id, start_datetime_utc, end_datetime_utc,))
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rows_energy_values = cursor_energy_db.fetchall()
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if rows_energy_values is None or len(rows_energy_values) == 0:
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energy_virtual_meter_hourly[virtual_meter_id] = None
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else:
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energy_virtual_meter_hourly[virtual_meter_id] = dict()
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for row_energy_value in rows_energy_values:
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energy_virtual_meter_hourly[virtual_meter_id][row_energy_value[0]] = row_energy_value[1]
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except Exception as e:
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error_string = "Error in step 6.1 of tenant_energy_input_item.worker " + str(e)
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if cursor_energy_db:
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cursor_energy_db.close()
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if cnx_energy_db:
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cnx_energy_db.close()
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print(error_string)
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return error_string
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####################################################################################################################
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# Step 7: for each offline meter in list, get energy input data from energy database
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####################################################################################################################
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energy_offline_meter_hourly = dict()
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if offline_meter_list is not None and len(offline_meter_list) > 0:
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try:
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for offline_meter in offline_meter_list:
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offline_meter_id = str(offline_meter['id'])
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query = (" SELECT start_datetime_utc, actual_value "
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" FROM tbl_offline_meter_hourly "
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" WHERE offline_meter_id = %s "
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" AND start_datetime_utc >= %s "
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" AND start_datetime_utc < %s "
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" ORDER BY start_datetime_utc ")
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cursor_energy_db.execute(query, (offline_meter_id, start_datetime_utc, end_datetime_utc,))
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rows_energy_values = cursor_energy_db.fetchall()
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if rows_energy_values is None or len(rows_energy_values) == 0:
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energy_offline_meter_hourly[offline_meter_id] = None
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else:
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energy_offline_meter_hourly[offline_meter_id] = dict()
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for row_energy_value in rows_energy_values:
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energy_offline_meter_hourly[offline_meter_id][row_energy_value[0]] = row_energy_value[1]
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except Exception as e:
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error_string = "Error in step 7.1 of tenant_energy_input_item.worker " + str(e)
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if cursor_energy_db:
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cursor_energy_db.close()
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if cnx_energy_db:
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cnx_energy_db.close()
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print(error_string)
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return error_string
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####################################################################################################################
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# Step 8: determine common time slot to aggregate
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####################################################################################################################
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common_start_datetime_utc = start_datetime_utc
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common_end_datetime_utc = end_datetime_utc
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print("Getting common time slot of energy values for all meters")
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if energy_meter_hourly is not None and len(energy_meter_hourly) > 0:
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for meter_id, energy_hourly in energy_meter_hourly.items():
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if energy_hourly is None or len(energy_hourly) == 0:
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common_start_datetime_utc = None
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common_end_datetime_utc = None
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break
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else:
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if common_start_datetime_utc < min(energy_hourly.keys()):
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common_start_datetime_utc = min(energy_hourly.keys())
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if common_end_datetime_utc > max(energy_hourly.keys()):
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common_end_datetime_utc = max(energy_hourly.keys())
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print("Getting common time slot of energy values for all virtual meters")
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if common_start_datetime_utc is not None and common_end_datetime_utc is not None:
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if energy_virtual_meter_hourly is not None and len(energy_virtual_meter_hourly) > 0:
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for meter_id, energy_hourly in energy_virtual_meter_hourly.items():
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if energy_hourly is None or len(energy_hourly) == 0:
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common_start_datetime_utc = None
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common_end_datetime_utc = None
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break
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else:
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if common_start_datetime_utc < min(energy_hourly.keys()):
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common_start_datetime_utc = min(energy_hourly.keys())
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if common_end_datetime_utc > max(energy_hourly.keys()):
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common_end_datetime_utc = max(energy_hourly.keys())
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print("Getting common time slot of energy values for all offline meters")
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if common_start_datetime_utc is not None and common_end_datetime_utc is not None:
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if energy_offline_meter_hourly is not None and len(energy_offline_meter_hourly) > 0:
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for meter_id, energy_hourly in energy_offline_meter_hourly.items():
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if energy_hourly is None or len(energy_hourly) == 0:
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common_start_datetime_utc = None
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common_end_datetime_utc = None
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break
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else:
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if common_start_datetime_utc < min(energy_hourly.keys()):
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common_start_datetime_utc = min(energy_hourly.keys())
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if common_end_datetime_utc > max(energy_hourly.keys()):
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common_end_datetime_utc = max(energy_hourly.keys())
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if (energy_meter_hourly is None or len(energy_meter_hourly) == 0) and \
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(energy_virtual_meter_hourly is None or len(energy_virtual_meter_hourly) == 0) and \
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(energy_offline_meter_hourly is None or len(energy_offline_meter_hourly) == 0):
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# There isn't any energy data
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print("There isn't any energy data")
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# continue the for tenant loop to the next tenant
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print("continue the for tenant loop to the next tenant")
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if cursor_energy_db:
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cursor_energy_db.close()
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if cnx_energy_db:
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cnx_energy_db.close()
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return None
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print("common_start_datetime_utc: " + str(common_start_datetime_utc))
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print("common_end_datetime_utc: " + str(common_end_datetime_utc))
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####################################################################################################################
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# Step 9: aggregate energy data in the common time slot by energy items and hourly
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####################################################################################################################
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print("Step 9: aggregate energy data in the common time slot by energy items and hourly")
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aggregated_values = list()
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try:
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current_datetime_utc = common_start_datetime_utc
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while common_start_datetime_utc is not None \
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and common_end_datetime_utc is not None \
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and current_datetime_utc <= common_end_datetime_utc:
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aggregated_value = dict()
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aggregated_value['start_datetime_utc'] = current_datetime_utc
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aggregated_value['meta_data'] = dict()
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if meter_list is not None and len(meter_list) > 0:
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for meter in meter_list:
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meter_id = str(meter['id'])
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energy_item_id = meter['energy_item_id']
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actual_value = energy_meter_hourly[meter_id].get(current_datetime_utc, Decimal(0.0))
|
|
aggregated_value['meta_data'][energy_item_id] = \
|
|
aggregated_value['meta_data'].get(energy_item_id, Decimal(0.0)) + actual_value
|
|
|
|
if virtual_meter_list is not None and len(virtual_meter_list) > 0:
|
|
for virtual_meter in virtual_meter_list:
|
|
virtual_meter_id = str(virtual_meter['id'])
|
|
energy_item_id = virtual_meter['energy_item_id']
|
|
actual_value = energy_virtual_meter_hourly[virtual_meter_id].get(current_datetime_utc, Decimal(0.0))
|
|
aggregated_value['meta_data'][energy_item_id] = \
|
|
aggregated_value['meta_data'].get(energy_item_id, Decimal(0.0)) + actual_value
|
|
|
|
if offline_meter_list is not None and len(offline_meter_list) > 0:
|
|
for offline_meter in offline_meter_list:
|
|
offline_meter_id = str(offline_meter['id'])
|
|
energy_item_id = offline_meter['energy_item_id']
|
|
actual_value = energy_offline_meter_hourly[offline_meter_id].get(current_datetime_utc, Decimal(0.0))
|
|
aggregated_value['meta_data'][energy_item_id] = \
|
|
aggregated_value['meta_data'].get(energy_item_id, Decimal(0.0)) + actual_value
|
|
|
|
aggregated_values.append(aggregated_value)
|
|
|
|
current_datetime_utc += timedelta(minutes=config.minutes_to_count)
|
|
|
|
except Exception as e:
|
|
error_string = "Error in step 9 of tenant_energy_input_item.worker " + str(e)
|
|
if cursor_energy_db:
|
|
cursor_energy_db.close()
|
|
if cnx_energy_db:
|
|
cnx_energy_db.close()
|
|
print(error_string)
|
|
return error_string
|
|
|
|
####################################################################################################################
|
|
# Step 10: save energy data to energy database
|
|
####################################################################################################################
|
|
print("Step 10: save energy data to energy database")
|
|
|
|
if len(aggregated_values) > 0:
|
|
try:
|
|
add_values = (" INSERT INTO tbl_tenant_input_item_hourly "
|
|
" (tenant_id, "
|
|
" energy_item_id, "
|
|
" start_datetime_utc, "
|
|
" actual_value) "
|
|
" VALUES ")
|
|
|
|
for aggregated_value in aggregated_values:
|
|
for energy_item_id, actual_value in aggregated_value['meta_data'].items():
|
|
add_values += " (" + str(tenant['id']) + ","
|
|
add_values += " " + str(energy_item_id) + ","
|
|
add_values += "'" + aggregated_value['start_datetime_utc'].isoformat()[0:19] + "',"
|
|
add_values += str(actual_value) + "), "
|
|
print("add_values:" + add_values)
|
|
# trim ", " at the end of string and then execute
|
|
cursor_energy_db.execute(add_values[:-2])
|
|
cnx_energy_db.commit()
|
|
|
|
except Exception as e:
|
|
error_string = "Error in step 10.1 of tenant_energy_input_item.worker " + str(e)
|
|
print(error_string)
|
|
return error_string
|
|
finally:
|
|
if cursor_energy_db:
|
|
cursor_energy_db.close()
|
|
if cnx_energy_db:
|
|
cnx_energy_db.close()
|
|
else:
|
|
if cursor_energy_db:
|
|
cursor_energy_db.close()
|
|
if cnx_energy_db:
|
|
cnx_energy_db.close()
|