myems-api/core/virtualmeter.py
import uuid
from datetime import datetime, timedelta
import falcon
import mysql.connector
import simplejson as json
from core.useractivity import user_logger, admin_control, access_control, api_key_control
import config
class VirtualMeterCollection:
@staticmethod
def __init__():
""""Initializes VirtualMeterCollection"""
pass
@staticmethod
def on_options(req, resp):
resp.status = falcon.HTTP_200
@staticmethod
def on_get(req, resp):
if 'API-KEY' not in req.headers or \
not isinstance(req.headers['API-KEY'], str) or \
len(str.strip(req.headers['API-KEY'])) == 0:
access_control(req)
else:
api_key_control(req)
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
query = (" SELECT id, name, uuid "
" FROM tbl_energy_categories ")
cursor.execute(query)
rows_energy_categories = cursor.fetchall()
energy_category_dict = dict()
if rows_energy_categories is not None and len(rows_energy_categories) > 0:
for row in rows_energy_categories:
energy_category_dict[row[0]] = {"id": row[0],
"name": row[1],
"uuid": row[2]}
query = (" SELECT id, name, uuid "
" FROM tbl_energy_items ")
cursor.execute(query)
rows_energy_items = cursor.fetchall()
energy_item_dict = dict()
if rows_energy_items is not None and len(rows_energy_items) > 0:
for row in rows_energy_items:
energy_item_dict[row[0]] = {"id": row[0],
"name": row[1],
"uuid": row[2]}
query = (" SELECT id, name, uuid "
" FROM tbl_cost_centers ")
cursor.execute(query)
rows_cost_centers = cursor.fetchall()
cost_center_dict = dict()
if rows_cost_centers is not None and len(rows_cost_centers) > 0:
for row in rows_cost_centers:
cost_center_dict[row[0]] = {"id": row[0],
"name": row[1],
"uuid": row[2]}
query = (" SELECT id, name, uuid, equation, energy_category_id, is_counted, cost_center_id, "
" energy_item_id, description "
" FROM tbl_virtual_meters "
" ORDER BY id ")
cursor.execute(query)
rows_virtual_meters = cursor.fetchall()
result = list()
if rows_virtual_meters is not None and len(rows_virtual_meters) > 0:
for row in rows_virtual_meters:
meta_result = {"id": row[0],
"name": row[1],
"uuid": row[2],
"equation": row[3],
"energy_category": energy_category_dict.get(row[4], None),
"is_counted": True if row[5] else False,
"cost_center": cost_center_dict.get(row[6], None),
"energy_item": energy_item_dict.get(row[7], None),
"description": row[8],
"expression": {}}
expression = dict()
if meta_result["equation"] is not None:
expression = {'equation': meta_result["equation"], 'variables': []}
query_variables = (" SELECT v.id, v.name, v.meter_type, v.meter_id "
" FROM tbl_virtual_meters vm, tbl_variables v "
" WHERE vm.id = %s AND v.virtual_meter_id = vm.id "
" ORDER BY SUBSTRING(v.name, 2, 10) + 0 ")
cursor.execute(query_variables, (meta_result['id'],))
rows_variables = cursor.fetchall()
if rows_variables is not None:
for row_variable in rows_variables:
if row_variable[2].lower() == 'meter':
query_meter = (" SELECT m.name "
" FROM tbl_meters m "
" WHERE m.id = %s ")
cursor.execute(query_meter, (row_variable[3],))
row_meter = cursor.fetchone()
if row_meter is not None:
expression['variables'].append({'id': row_variable[0],
'name': row_variable[1],
'meter_type': row_variable[2],
'meter_id': row_variable[3],
'meter_name': row_meter[0]})
elif row_variable[2].lower() == 'offline_meter':
query_meter = (" SELECT m.name "
" FROM tbl_offline_meters m "
" WHERE m.id = %s ")
cursor.execute(query_meter, (row_variable[3],))
row_meter = cursor.fetchone()
if row_meter is not None:
expression['variables'].append({'id': row_variable[0],
'name': row_variable[1],
'meter_type': row_variable[2],
'meter_id': row_variable[3],
'meter_name': row_meter[0]})
elif row_variable[2].lower() == 'virtual_meter':
query_meter = (" SELECT m.name "
" FROM tbl_virtual_meters m "
" WHERE m.id = %s ")
cursor.execute(query_meter, (row_variable[3],))
row_meter = cursor.fetchone()
if row_meter is not None:
expression['variables'].append({'id': row_variable[0],
'name': row_variable[1],
'meter_type': row_variable[2],
'meter_id': row_variable[3],
'meter_name': row_meter[0]})
meta_result['expression'] = expression
result.append(meta_result)
cursor.close()
cnx.close()
resp.text = json.dumps(result)
@staticmethod
@user_logger
def on_post(req, resp):
"""Handles POST requests"""
admin_control(req)
try:
raw_json = req.stream.read().decode('utf-8')
except Exception as ex:
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.FAILED_TO_READ_REQUEST_STREAM')
new_values = json.loads(raw_json)
if 'name' not in new_values['data'].keys() or \
not isinstance(new_values['data']['name'], str) or \
len(str.strip(new_values['data']['name'])) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_VIRTUAL_METER_NAME')
name = str.strip(new_values['data']['name'])
if 'energy_category_id' not in new_values['data'].keys() or new_values['data']['energy_category_id'] <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_ENERGY_CATEGORY_ID')
energy_category_id = new_values['data']['energy_category_id']
if 'is_counted' not in new_values['data'].keys() or not isinstance(new_values['data']['is_counted'], bool):
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_IS_COUNTED_VALUE')
is_counted = new_values['data']['is_counted']
if 'cost_center_id' not in new_values['data'].keys() or \
not isinstance(new_values['data']['cost_center_id'], int) or \
new_values['data']['cost_center_id'] <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_COST_CENTER_ID')
cost_center_id = new_values['data']['cost_center_id']
if 'energy_item_id' in new_values['data'].keys() and \
new_values['data']['energy_item_id'] is not None:
if not isinstance(new_values['data']['energy_item_id'], int) or \
new_values['data']['energy_item_id'] <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_ENERGY_ITEM_ID')
energy_item_id = new_values['data']['energy_item_id']
else:
energy_item_id = None
if 'description' in new_values['data'].keys() and \
new_values['data']['description'] is not None and \
len(str(new_values['data']['description'])) > 0:
description = str.strip(new_values['data']['description'])
else:
description = None
if 'expression' not in new_values['data'].keys():
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_EXPRESSION_OBJECT')
if 'equation' not in new_values['data']['expression'].keys() \
or len(new_values['data']['expression']['equation']) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_EQUATION_IN_EXPRESSION')
# todo: validate equation with more rules
if 'variables' not in new_values['data']['expression'].keys() \
or len(new_values['data']['expression']['variables']) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.EMPTY_VARIABLES_ARRAY')
for variable in new_values['data']['expression']['variables']:
if 'name' not in variable.keys() or \
len(variable['name']) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_VARIABLE_NAME')
if 'meter_type' not in variable.keys() or \
len(variable['meter_type']) == 0 or \
variable['meter_type'].lower() not in ['meter', 'offline_meter', 'virtual_meter']:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_VARIABLE_METER_TYPE')
if 'meter_id' not in variable.keys() or \
variable['meter_id'] <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_VARIABLE_METER_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT name "
" FROM tbl_virtual_meters "
" WHERE name = %s ", (name,))
if cursor.fetchone() is not None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.NOT_FOUND',
description='API.VIRTUAL_METER_NAME_IS_ALREADY_IN_USE')
cursor.execute(" SELECT name "
" FROM tbl_energy_categories "
" WHERE id = %s ",
(energy_category_id,))
if cursor.fetchone() is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.ENERGY_CATEGORY_NOT_FOUND')
cursor.execute(" SELECT name "
" FROM tbl_cost_centers "
" WHERE id = %s ",
(new_values['data']['cost_center_id'],))
row = cursor.fetchone()
if row is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.COST_CENTER_NOT_FOUND')
if energy_item_id is not None:
cursor.execute(" SELECT name, energy_category_id "
" FROM tbl_energy_items "
" WHERE id = %s ",
(new_values['data']['energy_item_id'],))
row = cursor.fetchone()
if row is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.ENERGY_ITEM_NOT_FOUND')
else:
if row[1] != energy_category_id:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.BAD_REQUEST',
description='API.ENERGY_ITEM_IS_NOT_BELONG_TO_ENERGY_CATEGORY')
for variable in new_values['data']['expression']['variables']:
if variable['meter_type'].lower() == 'meter':
cursor.execute(" SELECT name "
" FROM tbl_meters "
" WHERE id = %s ", (variable['meter_id'],))
if cursor.fetchone() is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404,
title='API.NOT_FOUND',
description='API.METER_OF_VARIABLE_NOT_FOUND')
elif variable['meter_type'].lower() == 'offline_meter':
cursor.execute(" SELECT name "
" FROM tbl_offline_meters "
" WHERE id = %s ", (variable['meter_id'],))
if cursor.fetchone() is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404,
title='API.NOT_FOUND',
description='API.OFFLINE_METER_OF_VARIABLE_NOT_FOUND')
elif variable['meter_type'].lower() == 'virtual_meter':
cursor.execute(" SELECT name "
" FROM tbl_virtual_meters "
" WHERE id = %s ", (variable['meter_id'],))
if cursor.fetchone() is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404,
title='API.NOT_FOUND',
description='API.VIRTUAL_METER_OF_VARIABLE_NOT_FOUND')
add_values = (" INSERT INTO tbl_virtual_meters "
" (name, uuid, equation, energy_category_id, is_counted, "
" cost_center_id, energy_item_id, description) "
" VALUES (%s, %s, %s, %s, %s, %s, %s, %s) ")
cursor.execute(add_values, (name,
str(uuid.uuid4()),
new_values['data']['expression']['equation'].lower(),
energy_category_id,
is_counted,
cost_center_id,
energy_item_id,
description))
new_id = cursor.lastrowid
cnx.commit()
# add variables
for variable in new_values['data']['expression']['variables']:
add_values = (" INSERT INTO tbl_variables (name, virtual_meter_id, meter_type, meter_id) "
" VALUES (%s, %s, %s, %s) ")
cursor.execute(add_values, (variable['name'].lower(),
new_id,
variable['meter_type'],
variable['meter_id'],))
cnx.commit()
cursor.close()
cnx.close()
resp.status = falcon.HTTP_201
resp.location = '/virtualmeters/' + str(new_id)
class VirtualMeterItem:
@staticmethod
def __init__():
""""Initializes VirtualMeterItem"""
pass
@staticmethod
def on_options(req, resp, id_):
resp.status = falcon.HTTP_200
@staticmethod
def on_get(req, resp, id_):
if 'API-KEY' not in req.headers or \
not isinstance(req.headers['API-KEY'], str) or \
len(str.strip(req.headers['API-KEY'])) == 0:
access_control(req)
else:
api_key_control(req)
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_VIRTUAL_METER_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
query = (" SELECT id, name, uuid "
" FROM tbl_energy_categories ")
cursor.execute(query)
rows_energy_categories = cursor.fetchall()
energy_category_dict = dict()
if rows_energy_categories is not None and len(rows_energy_categories) > 0:
for row in rows_energy_categories:
energy_category_dict[row[0]] = {"id": row[0],
"name": row[1],
"uuid": row[2]}
query = (" SELECT id, name, uuid, energy_category_id "
" FROM tbl_energy_items ")
cursor.execute(query)
rows_energy_items = cursor.fetchall()
energy_item_dict = dict()
if rows_energy_items is not None and len(rows_energy_items) > 0:
for row in rows_energy_items:
energy_item_dict[row[0]] = {"id": row[0],
"name": row[1],
"uuid": row[2]}
query = (" SELECT id, name, uuid "
" FROM tbl_cost_centers ")
cursor.execute(query)
rows_cost_centers = cursor.fetchall()
cost_center_dict = dict()
if rows_cost_centers is not None and len(rows_cost_centers) > 0:
for row in rows_cost_centers:
cost_center_dict[row[0]] = {"id": row[0],
"name": row[1],
"uuid": row[2]}
query = (" SELECT id, name, uuid, equation, energy_category_id, is_counted, cost_center_id, "
" energy_item_id, description "
" FROM tbl_virtual_meters "
" WHERE id = %s ")
cursor.execute(query, (id_,))
row = cursor.fetchone()
if row is None:
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.VIRTUAL_METER_NOT_FOUND')
else:
meta_result = {"id": row[0],
"name": row[1],
"uuid": row[2],
"equation": row[3],
"energy_category": energy_category_dict.get(row[4], None),
"is_counted": True if row[5] else False,
"cost_center": cost_center_dict.get(row[6], None),
"energy_item": energy_item_dict.get(row[7], None),
"description": row[8],
"expression": {}}
expression = dict()
if meta_result["equation"] is not None:
expression = {'equation': meta_result["equation"], 'variables': []}
query_variables = (" SELECT v.id, v.name, v.meter_type, v.meter_id "
" FROM tbl_virtual_meters vm, tbl_variables v "
" WHERE vm.id = %s AND v.virtual_meter_id = vm.id "
" ORDER BY v.name ")
cursor.execute(query_variables, (meta_result["id"],))
rows_variables = cursor.fetchall()
if rows_variables is not None:
for row_variable in rows_variables:
if row_variable[2].lower() == 'meter':
query_meter = (" SELECT m.name "
" FROM tbl_meters m "
" WHERE m.id = %s ")
cursor.execute(query_meter, (row_variable[3],))
row_meter = cursor.fetchone()
if row_meter is not None:
expression['variables'].append({'id': row_variable[0],
'name': row_variable[1],
'meter_type': row_variable[2],
'meter_id': row_variable[3],
'meter_name': row_meter[0]})
elif row_variable[2].lower() == 'offline_meter':
query_meter = (" SELECT m.name "
" FROM tbl_offline_meters m "
" WHERE m.id = %s ")
cursor.execute(query_meter, (row_variable[3],))
row_meter = cursor.fetchone()
if row_meter is not None:
expression['variables'].append({'id': row_variable[0],
'name': row_variable[1],
'meter_type': row_variable[2],
'meter_id': row_variable[3],
'meter_name': row_meter[0]})
elif row_variable[2].lower() == 'virtual_meter':
query_meter = (" SELECT m.name "
" FROM tbl_virtual_meters m "
" WHERE m.id = %s ")
cursor.execute(query_meter, (row_variable[3],))
row_meter = cursor.fetchone()
if row_meter is not None:
expression['variables'].append({'id': row_variable[0],
'name': row_variable[1],
'meter_type': row_variable[2],
'meter_id': row_variable[3],
'meter_name': row_meter[0]})
meta_result['expression'] = expression
cursor.close()
cnx.close()
resp.text = json.dumps(meta_result)
@staticmethod
@user_logger
def on_delete(req, resp, id_):
admin_control(req)
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_VIRTUAL_METER_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT uuid "
" FROM tbl_virtual_meters "
" WHERE id = %s ", (id_,))
row = cursor.fetchone()
if row is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.VIRTUAL_METER_NOT_FOUND')
else:
virtual_meter_uuid = row[0]
# check relations with other virtual meters
cursor.execute(" SELECT vm.name "
" FROM tbl_variables va, tbl_virtual_meters vm "
" WHERE va.meter_id = %s AND va.meter_type = 'virtual_meter' AND va.virtual_meter_id = vm.id ",
(id_,))
row_virtual_meter = cursor.fetchone()
if row_virtual_meter is not None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THERE_IS_RELATION_WITH_OTHER_VIRTUAL_METERS')
# check relation with spaces
cursor.execute(" SELECT id "
" FROM tbl_spaces_virtual_meters "
" WHERE virtual_meter_id = %s ", (id_,))
rows_spaces = cursor.fetchall()
if rows_spaces is not None and len(rows_spaces) > 0:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THERE_IS_RELATION_WITH_SPACES')
# check relation with combined equipments
cursor.execute(" SELECT combined_equipment_id "
" FROM tbl_combined_equipments_virtual_meters "
" WHERE virtual_meter_id = %s ",
(id_,))
rows_combined_equipments = cursor.fetchall()
if rows_combined_equipments is not None and len(rows_combined_equipments) > 0:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THERE_IS_RELATION_WITH_COMBINED_EQUIPMENTS')
# check relation with combined equipment parameters
cursor.execute(" SELECT combined_equipment_id "
" FROM tbl_combined_equipments_parameters "
" WHERE numerator_meter_uuid = %s OR denominator_meter_uuid = %s",
(virtual_meter_uuid, virtual_meter_uuid,))
rows_combined_equipments = cursor.fetchall()
if rows_combined_equipments is not None and len(rows_combined_equipments) > 0:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THERE_IS_RELATION_WITH_COMBINED_EQUIPMENT_PARAMETERS')
# check relation with equipments
cursor.execute(" SELECT equipment_id "
" FROM tbl_equipments_virtual_meters "
" WHERE virtual_meter_id = %s ", (id_,))
rows_equipments = cursor.fetchall()
if rows_equipments is not None and len(rows_equipments) > 0:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THERE_IS_RELATION_WITH_EQUIPMENTS')
# check relation with equipment parameters
cursor.execute(" SELECT equipment_id "
" FROM tbl_equipments_parameters "
" WHERE numerator_meter_uuid = %s OR denominator_meter_uuid = %s",
(virtual_meter_uuid, virtual_meter_uuid,))
rows_equipments = cursor.fetchall()
if rows_equipments is not None and len(rows_equipments) > 0:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THERE_IS_RELATION_WITH_EQUIPMENT_PARAMETERS')
# check relations with tenants
cursor.execute(" SELECT tenant_id "
" FROM tbl_tenants_virtual_meters "
" WHERE virtual_meter_id = %s ", (id_,))
rows_tenants = cursor.fetchall()
if rows_tenants is not None and len(rows_tenants) > 0:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THERE_IS_RELATION_WITH_TENANTS')
# check relations with stores
cursor.execute(" SELECT store_id "
" FROM tbl_stores_virtual_meters "
" WHERE virtual_meter_id = %s ", (id_,))
rows_stores = cursor.fetchall()
if rows_stores is not None and len(rows_stores) > 0:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THERE_IS_RELATION_WITH_STORES')
# check relations with shopfloors
cursor.execute(" SELECT shopfloor_id "
" FROM tbl_shopfloors_virtual_meters "
" WHERE virtual_meter_id = %s ", (id_,))
rows_shopfloors = cursor.fetchall()
if rows_shopfloors is not None and len(rows_shopfloors) > 0:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THERE_IS_RELATION_WITH_SHOPFLOORS')
# check relation with energy flow diagram links
cursor.execute(" SELECT id "
" FROM tbl_energy_flow_diagrams_links "
" WHERE meter_uuid = %s ", (virtual_meter_uuid,))
rows_links = cursor.fetchall()
if rows_links is not None and len(rows_links) > 0:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THERE_IS_RELATION_WITH_ENERGY_FLOW_DIAGRAM_LINKS')
cursor.execute(" SELECT id "
" FROM tbl_variables "
" WHERE virtual_meter_id = %s ", (id_,))
row_variables = cursor.fetchall()
if row_variables is not None and len(row_variables) > 0:
# delete variables
cursor.execute(" DELETE FROM tbl_variables WHERE virtual_meter_id = %s ", (id_,))
cnx.commit()
cursor.execute(" DELETE FROM tbl_virtual_meters WHERE id = %s ", (id_,))
cnx.commit()
cursor.close()
cnx.close()
resp.status = falcon.HTTP_204
@staticmethod
@user_logger
def on_put(req, resp, id_):
"""Handles PUT requests"""
admin_control(req)
try:
raw_json = req.stream.read().decode('utf-8')
except Exception as ex:
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.FAILED_TO_READ_REQUEST_STREAM')
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_VIRTUAL_METER_ID')
new_values = json.loads(raw_json)
if 'name' not in new_values['data'].keys() or \
not isinstance(new_values['data']['name'], str) or \
len(str.strip(new_values['data']['name'])) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_VIRTUAL_METER_NAME')
name = str.strip(new_values['data']['name'])
if 'energy_category_id' not in new_values['data'].keys() or new_values['data']['energy_category_id'] <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_ENERGY_CATEGORY_ID')
energy_category_id = new_values['data']['energy_category_id']
if 'is_counted' not in new_values['data'].keys() or not isinstance(new_values['data']['is_counted'], bool):
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_IS_COUNTED_VALUE')
is_counted = new_values['data']['is_counted']
if 'cost_center_id' not in new_values['data'].keys() or \
not isinstance(new_values['data']['cost_center_id'], int) or \
new_values['data']['cost_center_id'] <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_COST_CENTER_ID')
cost_center_id = new_values['data']['cost_center_id']
if 'energy_item_id' in new_values['data'].keys() and \
new_values['data']['energy_item_id'] is not None:
if not isinstance(new_values['data']['energy_item_id'], int) or \
new_values['data']['energy_item_id'] <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_ENERGY_ITEM_ID')
energy_item_id = new_values['data']['energy_item_id']
else:
energy_item_id = None
if 'description' in new_values['data'].keys() and \
new_values['data']['description'] is not None and \
len(str(new_values['data']['description'])) > 0:
description = str.strip(new_values['data']['description'])
else:
description = None
if 'expression' not in new_values['data'].keys():
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_EXPRESSION_OBJECT')
if 'equation' not in new_values['data']['expression'].keys() \
or len(new_values['data']['expression']['equation']) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_EQUATION_IN_EXPRESSION')
# todo: validate equation with more rules
if 'variables' not in new_values['data']['expression'].keys() \
or len(new_values['data']['expression']['variables']) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.EMPTY_VARIABLES_ARRAY')
for variable in new_values['data']['expression']['variables']:
if 'name' not in variable.keys() or \
len(variable['name']) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_VARIABLE_NAME')
if 'meter_type' not in variable.keys() or \
len(variable['meter_type']) == 0 or \
variable['meter_type'].lower() not in ['meter', 'offline_meter', 'virtual_meter']:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_VARIABLE_METER_TYPE')
if 'meter_id' not in variable.keys() or \
variable['meter_id'] <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_VARIABLE_METER_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT name "
" FROM tbl_virtual_meters "
" WHERE id = %s ", (id_,))
if cursor.fetchone() is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.VIRTUAL_METER_NOT_FOUND')
cursor.execute(" SELECT name "
" FROM tbl_virtual_meters "
" WHERE name = %s AND id != %s ", (name, id_))
if cursor.fetchone() is not None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.VIRTUAL_METER_NAME_IS_ALREADY_IN_USE')
cursor.execute(" SELECT name "
" FROM tbl_energy_categories "
" WHERE id = %s ",
(energy_category_id,))
if cursor.fetchone() is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.ENERGY_CATEGORY_NOT_FOUND')
cursor.execute(" SELECT name "
" FROM tbl_cost_centers "
" WHERE id = %s ",
(new_values['data']['cost_center_id'],))
row = cursor.fetchone()
if row is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.COST_CENTER_NOT_FOUND')
if energy_item_id is not None:
cursor.execute(" SELECT name, energy_category_id "
" FROM tbl_energy_items "
" WHERE id = %s ",
(new_values['data']['energy_item_id'],))
row = cursor.fetchone()
if row is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.ENERGY_ITEM_NOT_FOUND')
else:
if row[1] != energy_category_id:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.ENERGY_ITEM_IS_NOT_BELONG_TO_ENERGY_CATEGORY')
for variable in new_values['data']['expression']['variables']:
if variable['meter_type'].lower() == 'meter':
cursor.execute(" SELECT name "
" FROM tbl_meters "
" WHERE id = %s ", (variable['meter_id'],))
if cursor.fetchone() is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404,
title='API.NOT_FOUND',
description='API.METER_OF_VARIABLE_NOT_FOUND')
elif variable['meter_type'].lower() == 'offline_meter':
cursor.execute(" SELECT name "
" FROM tbl_offline_meters "
" WHERE id = %s ", (variable['meter_id'],))
if cursor.fetchone() is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404,
title='API.NOT_FOUND',
description='API.OFFLINE_METER_OF_VARIABLE_NOT_FOUND')
elif variable['meter_type'].lower() == 'virtual_meter':
cursor.execute(" SELECT name "
" FROM tbl_virtual_meters "
" WHERE id = %s ", (variable['meter_id'],))
if cursor.fetchone() is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404,
title='API.NOT_FOUND',
description='API.VIRTUAL_METER_OF_VARIABLE_NOT_FOUND')
try:
update_row = (" UPDATE tbl_virtual_meters "
" SET name = %s, equation = %s, energy_category_id = %s, is_counted = %s, "
" cost_center_id = %s, energy_item_id = %s, description = %s "
" WHERE id = %s ")
cursor.execute(update_row, (name,
new_values['data']['expression']['equation'].lower(),
energy_category_id,
is_counted,
cost_center_id,
energy_item_id,
description,
id_,))
cnx.commit()
except Exception as ex:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.ERROR', description=str(ex))
try:
cursor.execute(" SELECT id "
" FROM tbl_variables "
" WHERE virtual_meter_id = %s ", (id_,))
row_variables = cursor.fetchall()
if row_variables is not None and len(row_variables) > 0:
# delete variables
cursor.execute(" DELETE FROM tbl_variables WHERE virtual_meter_id = %s ", (id_,))
cnx.commit()
except Exception as ex:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.ERROR', description=str(ex))
# add variables
for variable in new_values['data']['expression']['variables']:
try:
add_values = (" INSERT INTO tbl_variables (name, virtual_meter_id, meter_type, meter_id) "
" VALUES (%s, %s, %s, %s) ")
cursor.execute(add_values, (variable['name'].lower(),
id_,
variable['meter_type'],
variable['meter_id'],))
cnx.commit()
except Exception as ex:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.ERROR', description=str(ex))
cursor.close()
cnx.close()
resp.status = falcon.HTTP_200
class VirtualMeterExport:
@staticmethod
def __init__():
""""Initializes VirtualMeterItem"""
pass
@staticmethod
def on_options(req, resp, id_):
resp.status = falcon.HTTP_200
@staticmethod
def on_get(req, resp, id_):
if 'API-KEY' not in req.headers or \
not isinstance(req.headers['API-KEY'], str) or \
len(str.strip(req.headers['API-KEY'])) == 0:
access_control(req)
else:
api_key_control(req)
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_VIRTUAL_METER_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
query = (" SELECT id, name, uuid "
" FROM tbl_energy_categories ")
cursor.execute(query)
rows_energy_categories = cursor.fetchall()
energy_category_dict = dict()
if rows_energy_categories is not None and len(rows_energy_categories) > 0:
for row in rows_energy_categories:
energy_category_dict[row[0]] = {"id": row[0],
"name": row[1],
"uuid": row[2]}
query = (" SELECT id, name, uuid, energy_category_id "
" FROM tbl_energy_items ")
cursor.execute(query)
rows_energy_items = cursor.fetchall()
energy_item_dict = dict()
if rows_energy_items is not None and len(rows_energy_items) > 0:
for row in rows_energy_items:
energy_item_dict[row[0]] = {"id": row[0],
"name": row[1],
"uuid": row[2]}
query = (" SELECT id, name, uuid "
" FROM tbl_cost_centers ")
cursor.execute(query)
rows_cost_centers = cursor.fetchall()
cost_center_dict = dict()
if rows_cost_centers is not None and len(rows_cost_centers) > 0:
for row in rows_cost_centers:
cost_center_dict[row[0]] = {"id": row[0],
"name": row[1],
"uuid": row[2]}
query = (" SELECT id, name, uuid, equation, energy_category_id, is_counted, cost_center_id, "
" energy_item_id, description "
" FROM tbl_virtual_meters "
" WHERE id = %s ")
cursor.execute(query, (id_,))
row = cursor.fetchone()
if row is None:
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.VIRTUAL_METER_NOT_FOUND')
else:
meta_result = {"id": row[0],
"name": row[1],
"uuid": row[2],
"equation": row[3],
"energy_category": energy_category_dict.get(row[4], None),
"is_counted": True if row[5] else False,
"cost_center": cost_center_dict.get(row[6], None),
"energy_item": energy_item_dict.get(row[7], None),
"description": row[8],
"expression": {}}
expression = dict()
if meta_result["equation"] is not None:
expression = {'equation': meta_result["equation"], 'variables': []}
query_variables = (" SELECT v.id, v.name, v.meter_type, v.meter_id "
" FROM tbl_virtual_meters vm, tbl_variables v "
" WHERE vm.id = %s AND v.virtual_meter_id = vm.id "
" ORDER BY v.name ")
cursor.execute(query_variables, (meta_result["id"],))
rows_variables = cursor.fetchall()
if rows_variables is not None:
for row_variable in rows_variables:
if row_variable[2].lower() == 'meter':
query_meter = (" SELECT m.name "
" FROM tbl_meters m "
" WHERE m.id = %s ")
cursor.execute(query_meter, (row_variable[3],))
row_meter = cursor.fetchone()
if row_meter is not None:
expression['variables'].append({'id': row_variable[0],
'name': row_variable[1],
'meter_type': row_variable[2],
'meter_id': row_variable[3],
'meter_name': row_meter[0]})
elif row_variable[2].lower() == 'offline_meter':
query_meter = (" SELECT m.name "
" FROM tbl_offline_meters m "
" WHERE m.id = %s ")
cursor.execute(query_meter, (row_variable[3],))
row_meter = cursor.fetchone()
if row_meter is not None:
expression['variables'].append({'id': row_variable[0],
'name': row_variable[1],
'meter_type': row_variable[2],
'meter_id': row_variable[3],
'meter_name': row_meter[0]})
elif row_variable[2].lower() == 'virtual_meter':
query_meter = (" SELECT m.name "
" FROM tbl_virtual_meters m "
" WHERE m.id = %s ")
cursor.execute(query_meter, (row_variable[3],))
row_meter = cursor.fetchone()
if row_meter is not None:
expression['variables'].append({'id': row_variable[0],
'name': row_variable[1],
'meter_type': row_variable[2],
'meter_id': row_variable[3],
'meter_name': row_meter[0]})
meta_result['expression'] = expression
cursor.close()
cnx.close()
resp.text = json.dumps(meta_result)
class VirtualMeterImport:
@staticmethod
def __init__():
""""Initializes VirtualMeterImport"""
pass
@staticmethod
def on_options(req, resp):
resp.status = falcon.HTTP_200
@staticmethod
@user_logger
def on_post(req, resp):
"""Handles POST requests"""
admin_control(req)
try:
raw_json = req.stream.read().decode('utf-8')
except Exception as ex:
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.FAILED_TO_READ_REQUEST_STREAM')
new_values = json.loads(raw_json)
if 'name' not in new_values.keys() or \
not isinstance(new_values['name'], str) or \
len(str.strip(new_values['name'])) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_VIRTUAL_METER_NAME')
name = str.strip(new_values['name'])
if 'id' not in new_values['energy_category'].keys() or new_values['energy_category']['id'] <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_ENERGY_CATEGORY_ID')
energy_category_id = new_values['energy_category']['id']
if 'is_counted' not in new_values.keys() or not isinstance(new_values['is_counted'], bool):
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_IS_COUNTED_VALUE')
is_counted = new_values['is_counted']
if 'id' not in new_values['cost_center'].keys() or \
not isinstance(new_values['cost_center']['id'], int) or \
new_values['cost_center']['id'] <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_COST_CENTER_ID')
cost_center_id = new_values['cost_center']['id']
if 'id' in new_values['energy_item'].keys() and \
new_values['energy_item']['id'] is not None:
if not isinstance(new_values['energy_item']['id'], int) or \
new_values['energy_item']['id'] <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_ENERGY_ITEM_ID')
energy_item_id = new_values['energy_item']['id']
else:
energy_item_id = None
if 'description' in new_values.keys() and \
new_values['description'] is not None and \
len(str(new_values['description'])) > 0:
description = str.strip(new_values['description'])
else:
description = None
if 'expression' not in new_values.keys():
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_EXPRESSION_OBJECT')
if 'equation' not in new_values['expression'].keys() \
or len(new_values['expression']['equation']) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_EQUATION_IN_EXPRESSION')
# todo: validate equation with more rules
if 'variables' not in new_values['expression'].keys() \
or len(new_values['expression']['variables']) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.EMPTY_VARIABLES_ARRAY')
for variable in new_values['expression']['variables']:
if 'name' not in variable.keys() or \
len(variable['name']) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_VARIABLE_NAME')
if 'meter_type' not in variable.keys() or \
len(variable['meter_type']) == 0 or \
variable['meter_type'].lower() not in ['meter', 'offline_meter', 'virtual_meter']:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_VARIABLE_METER_TYPE')
if 'meter_id' not in variable.keys() or \
variable['meter_id'] <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_VARIABLE_METER_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT name "
" FROM tbl_virtual_meters "
" WHERE name = %s ", (name,))
if cursor.fetchone() is not None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.NOT_FOUND',
description='API.VIRTUAL_METER_NAME_IS_ALREADY_IN_USE')
cursor.execute(" SELECT name "
" FROM tbl_energy_categories "
" WHERE id = %s ",
(energy_category_id,))
if cursor.fetchone() is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.ENERGY_CATEGORY_NOT_FOUND')
cursor.execute(" SELECT name "
" FROM tbl_cost_centers "
" WHERE id = %s ",
(new_values['cost_center']['id'],))
row = cursor.fetchone()
if row is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.COST_CENTER_NOT_FOUND')
if energy_item_id is not None:
cursor.execute(" SELECT name, energy_category_id "
" FROM tbl_energy_items "
" WHERE id = %s ",
(new_values['energy_item']['id'],))
row = cursor.fetchone()
if row is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.ENERGY_ITEM_NOT_FOUND')
else:
if row[1] != energy_category_id:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.BAD_REQUEST',
description='API.ENERGY_ITEM_IS_NOT_BELONG_TO_ENERGY_CATEGORY')
for variable in new_values['expression']['variables']:
if variable['meter_type'].lower() == 'meter':
cursor.execute(" SELECT name "
" FROM tbl_meters "
" WHERE id = %s ", (variable['meter_id'],))
if cursor.fetchone() is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404,
title='API.NOT_FOUND',
description='API.METER_OF_VARIABLE_NOT_FOUND')
elif variable['meter_type'].lower() == 'offline_meter':
cursor.execute(" SELECT name "
" FROM tbl_offline_meters "
" WHERE id = %s ", (variable['meter_id'],))
if cursor.fetchone() is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404,
title='API.NOT_FOUND',
description='API.OFFLINE_METER_OF_VARIABLE_NOT_FOUND')
elif variable['meter_type'].lower() == 'virtual_meter':
cursor.execute(" SELECT name "
" FROM tbl_virtual_meters "
" WHERE id = %s ", (variable['meter_id'],))
if cursor.fetchone() is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404,
title='API.NOT_FOUND',
description='API.VIRTUAL_METER_OF_VARIABLE_NOT_FOUND')
add_values = (" INSERT INTO tbl_virtual_meters "
" (name, uuid, equation, energy_category_id, is_counted, "
" cost_center_id, energy_item_id, description) "
" VALUES (%s, %s, %s, %s, %s, %s, %s, %s) ")
cursor.execute(add_values, (name,
str(uuid.uuid4()),
new_values['expression']['equation'].lower(),
energy_category_id,
is_counted,
cost_center_id,
energy_item_id,
description))
new_id = cursor.lastrowid
cnx.commit()
# add variables
for variable in new_values['expression']['variables']:
add_values = (" INSERT INTO tbl_variables (name, virtual_meter_id, meter_type, meter_id) "
" VALUES (%s, %s, %s, %s) ")
cursor.execute(add_values, (variable['name'].lower(),
new_id,
variable['meter_type'],
variable['meter_id'],))
cnx.commit()
cursor.close()
cnx.close()
resp.status = falcon.HTTP_201
resp.location = '/virtualmeters/' + str(new_id)
class VirtualMeterClone:
@staticmethod
def __init__():
""""Initializes VirtualMeterClone"""
pass
@staticmethod
def on_options(req, resp, id_):
resp.status = falcon.HTTP_200
@staticmethod
@user_logger
def on_post(req, resp, id_):
if 'API-KEY' not in req.headers or \
not isinstance(req.headers['API-KEY'], str) or \
len(str.strip(req.headers['API-KEY'])) == 0:
access_control(req)
else:
api_key_control(req)
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_VIRTUAL_METER_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
query = (" SELECT id, name, uuid "
" FROM tbl_energy_categories ")
cursor.execute(query)
rows_energy_categories = cursor.fetchall()
energy_category_dict = dict()
if rows_energy_categories is not None and len(rows_energy_categories) > 0:
for row in rows_energy_categories:
energy_category_dict[row[0]] = {"id": row[0],
"name": row[1],
"uuid": row[2]}
query = (" SELECT id, name, uuid, energy_category_id "
" FROM tbl_energy_items ")
cursor.execute(query)
rows_energy_items = cursor.fetchall()
energy_item_dict = dict()
if rows_energy_items is not None and len(rows_energy_items) > 0:
for row in rows_energy_items:
energy_item_dict[row[0]] = {"id": row[0],
"name": row[1],
"uuid": row[2]}
query = (" SELECT id, name, uuid "
" FROM tbl_cost_centers ")
cursor.execute(query)
rows_cost_centers = cursor.fetchall()
cost_center_dict = dict()
if rows_cost_centers is not None and len(rows_cost_centers) > 0:
for row in rows_cost_centers:
cost_center_dict[row[0]] = {"id": row[0],
"name": row[1],
"uuid": row[2]}
query = (" SELECT id, name, uuid, equation, energy_category_id, is_counted, cost_center_id, "
" energy_item_id, description "
" FROM tbl_virtual_meters "
" WHERE id = %s ")
cursor.execute(query, (id_,))
row = cursor.fetchone()
if row is None:
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.VIRTUAL_METER_NOT_FOUND')
else:
meta_result = {"id": row[0],
"name": row[1],
"uuid": row[2],
"equation": row[3],
"energy_category": energy_category_dict.get(row[4], None),
"is_counted": True if row[5] else False,
"cost_center": cost_center_dict.get(row[6], None),
"energy_item": energy_item_dict.get(row[7], None),
"description": row[8],
"expression": {}}
expression = dict()
if meta_result["equation"] is not None:
expression = {'equation': meta_result["equation"], 'variables': []}
query_variables = (" SELECT v.id, v.name, v.meter_type, v.meter_id "
" FROM tbl_virtual_meters vm, tbl_variables v "
" WHERE vm.id = %s AND v.virtual_meter_id = vm.id "
" ORDER BY v.name ")
cursor.execute(query_variables, (meta_result["id"],))
rows_variables = cursor.fetchall()
if rows_variables is not None:
for row_variable in rows_variables:
if row_variable[2].lower() == 'meter':
query_meter = (" SELECT m.name "
" FROM tbl_meters m "
" WHERE m.id = %s ")
cursor.execute(query_meter, (row_variable[3],))
row_meter = cursor.fetchone()
if row_meter is not None:
expression['variables'].append({'id': row_variable[0],
'name': row_variable[1],
'meter_type': row_variable[2],
'meter_id': row_variable[3],
'meter_name': row_meter[0]})
elif row_variable[2].lower() == 'offline_meter':
query_meter = (" SELECT m.name "
" FROM tbl_offline_meters m "
" WHERE m.id = %s ")
cursor.execute(query_meter, (row_variable[3],))
row_meter = cursor.fetchone()
if row_meter is not None:
expression['variables'].append({'id': row_variable[0],
'name': row_variable[1],
'meter_type': row_variable[2],
'meter_id': row_variable[3],
'meter_name': row_meter[0]})
elif row_variable[2].lower() == 'virtual_meter':
query_meter = (" SELECT m.name "
" FROM tbl_virtual_meters m "
" WHERE m.id = %s ")
cursor.execute(query_meter, (row_variable[3],))
row_meter = cursor.fetchone()
if row_meter is not None:
expression['variables'].append({'id': row_variable[0],
'name': row_variable[1],
'meter_type': row_variable[2],
'meter_id': row_variable[3],
'meter_name': row_meter[0]})
meta_result['expression'] = expression
timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6])
if config.utc_offset[0] == '-':
timezone_offset = -timezone_offset
new_name = (str.strip(meta_result['name'])
+ (datetime.now()
+ timedelta(minutes=timezone_offset)).isoformat(sep='-', timespec='seconds'))
add_values = (" INSERT INTO tbl_virtual_meters "
" (name, uuid, equation, energy_category_id, is_counted, "
" cost_center_id, energy_item_id, description) "
" VALUES (%s, %s, %s, %s, %s, %s, %s, %s) ")
cursor.execute(add_values, (new_name,
str(uuid.uuid4()),
meta_result['expression']['equation'].lower(),
meta_result['energy_category']['id'],
meta_result['is_counted'],
meta_result['cost_center']['id'],
meta_result['energy_item']['id'],
meta_result['description']))
new_id = cursor.lastrowid
cnx.commit()
# add variables
for variable in meta_result['expression']['variables']:
add_values = (" INSERT INTO tbl_variables (name, virtual_meter_id, meter_type, meter_id) "
" VALUES (%s, %s, %s, %s) ")
cursor.execute(add_values, (variable['name'].lower(),
new_id,
variable['meter_type'],
variable['meter_id'],))
cnx.commit()
cursor.close()
cnx.close()
resp.status = falcon.HTTP_201
resp.location = '/virtualmeters/' + str(new_id)