myems/myems-api/core/meter.py

1059 lines
46 KiB
Python

import base64
import os
import falcon
import simplejson as json
import mysql.connector
import config
import uuid
import qrcode
import qrcode.image.svg
from core.useractivity import user_logger, access_control
class MeterCollection:
@staticmethod
def __init__():
"""Initializes MeterCollection"""
pass
@staticmethod
def on_options(req, resp):
resp.status = falcon.HTTP_200
@staticmethod
def on_get(req, resp):
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor(dictionary=True)
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['id']] = {"id": row['id'],
"name": row['name'],
"uuid": row['uuid']}
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['id']] = {"id": row['id'],
"name": row['name'],
"uuid": row['uuid']}
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['id']] = {"id": row['id'],
"name": row['name'],
"uuid": row['uuid']}
query = (" SELECT id, name, uuid "
" FROM tbl_meters ")
cursor.execute(query)
rows_master_meters = cursor.fetchall()
master_meter_dict = dict()
if rows_master_meters is not None and len(rows_master_meters) > 0:
for row in rows_master_meters:
master_meter_dict[row['id']] = {"id": row['id'],
"name": row['name'],
"uuid": row['uuid']}
query = (" SELECT id, name, uuid, energy_category_id, "
" is_counted, hourly_low_limit, hourly_high_limit, "
" cost_center_id, energy_item_id, master_meter_id, description "
" FROM tbl_meters "
" ORDER BY id ")
cursor.execute(query)
rows_meters = cursor.fetchall()
result = list()
if rows_meters is not None and len(rows_meters) > 0:
for row in rows_meters:
file_path = os.path.join(config.upload_path, row['uuid'] + ".svg")
try:
file = open(file_path, "rb")
except IOError:
meter_qrcode = qrcode.QRCode(
version=1,
error_correction=qrcode.ERROR_CORRECT_L,
box_size=10,
border=4
)
meter_qrcode.add_data("meter" + row['uuid'])
meter_qrcode.make_image(image_factory=qrcode.image.svg.SvgImage).save(file_path)
file = open(file_path, "rb")
finally:
qrcode_base64 = base64.b64encode(file.read())
file.close()
energy_category = energy_category_dict.get(row['energy_category_id'], None)
cost_center = cost_center_dict.get(row['cost_center_id'], None)
energy_item = energy_item_dict.get(row['energy_item_id'], None)
master_meter = master_meter_dict.get(row['master_meter_id'], None)
meta_result = {"id": row['id'],
"name": row['name'],
"uuid": row['uuid'],
"energy_category": energy_category,
"is_counted": True if row['is_counted'] else False,
"hourly_low_limit": row['hourly_low_limit'],
"hourly_high_limit": row['hourly_high_limit'],
"cost_center": cost_center,
"energy_item": energy_item,
"master_meter": master_meter,
"description": row['description'],
"qrcode": qrcode_base64}
result.append(meta_result)
cursor.close()
cnx.disconnect()
resp.text = json.dumps(result)
@staticmethod
@user_logger
def on_post(req, resp):
"""Handles POST requests"""
access_control(req)
try:
raw_json = req.stream.read().decode('utf-8')
except Exception as ex:
raise falcon.HTTPError(falcon.HTTP_400, title='API.ERROR', description=ex)
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(falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_METER_NAME')
name = str.strip(new_values['data']['name'])
if 'energy_category_id' not in new_values['data'].keys() or \
not isinstance(new_values['data']['energy_category_id'], int) or \
new_values['data']['energy_category_id'] <= 0:
raise falcon.HTTPError(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(falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_IS_COUNTED_VALUE')
is_counted = new_values['data']['is_counted']
if 'hourly_low_limit' not in new_values['data'].keys() or \
not (isinstance(new_values['data']['hourly_low_limit'], float) or
isinstance(new_values['data']['hourly_low_limit'], int)):
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_HOURLY_LOW_LIMIT_VALUE')
hourly_low_limit = new_values['data']['hourly_low_limit']
if 'hourly_high_limit' not in new_values['data'].keys() or \
not (isinstance(new_values['data']['hourly_high_limit'], float) or
isinstance(new_values['data']['hourly_high_limit'], int)):
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_HOURLY_HIGH_LIMIT_VALUE')
hourly_high_limit = new_values['data']['hourly_high_limit']
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(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(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 'master_meter_id' in new_values['data'].keys():
if not isinstance(new_values['data']['master_meter_id'], int) or \
new_values['data']['master_meter_id'] <= 0:
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_MASTER_METER_ID')
master_meter_id = new_values['data']['master_meter_id']
else:
master_meter_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
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT name "
" FROM tbl_meters "
" WHERE name = %s ", (name,))
if cursor.fetchone() is not None:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.BAD_REQUEST',
description='API.METER_NAME_IS_ALREADY_IN_USE')
cursor.execute(" SELECT name "
" FROM tbl_energy_categories "
" WHERE id = %s ",
(new_values['data']['energy_category_id'],))
if cursor.fetchone() is None:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(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.disconnect()
raise falcon.HTTPError(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.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
description='API.ENERGY_ITEM_NOT_FOUND')
else:
if row[1] != energy_category_id:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.BAD_REQUEST',
description='API.ENERGY_ITEM_DOES_NOT_BELONG_TO_ENERGY_CATEGORY')
if master_meter_id is not None:
cursor.execute(" SELECT name, energy_category_id "
" FROM tbl_meters "
" WHERE id = %s ",
(new_values['data']['master_meter_id'],))
row = cursor.fetchone()
if row is None:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
description='API.MASTER_METER_NOT_FOUND')
else:
if row[1] != energy_category_id:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.BAD_REQUEST',
description='API.MASTER_METER_DOES_NOT_BELONG_TO_SAME_ENERGY_CATEGORY')
add_values = (" INSERT INTO tbl_meters "
" (name, uuid, energy_category_id, is_counted, hourly_low_limit, hourly_high_limit,"
" cost_center_id, energy_item_id, master_meter_id, description) "
" VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s) ")
cursor.execute(add_values, (name,
str(uuid.uuid4()),
energy_category_id,
is_counted,
hourly_low_limit,
hourly_high_limit,
cost_center_id,
energy_item_id,
master_meter_id,
description))
new_id = cursor.lastrowid
cnx.commit()
cursor.close()
cnx.disconnect()
resp.status = falcon.HTTP_201
resp.location = '/meters/' + str(new_id)
class MeterItem:
@staticmethod
def __init__():
"""Initializes MeterItem"""
pass
@staticmethod
def on_options(req, resp, id_):
resp.status = falcon.HTTP_200
@staticmethod
def on_get(req, resp, id_):
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_METER_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor(dictionary=True)
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['id']] = {"id": row['id'],
"name": row['name'],
"uuid": row['uuid']}
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['id']] = {"id": row['id'],
"name": row['name'],
"uuid": row['uuid']}
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['id']] = {"id": row['id'],
"name": row['name'],
"uuid": row['uuid']}
query = (" SELECT id, name, uuid "
" FROM tbl_meters ")
cursor.execute(query)
rows_master_meters = cursor.fetchall()
master_meter_dict = dict()
if rows_master_meters is not None and len(rows_master_meters) > 0:
for row in rows_master_meters:
master_meter_dict[row['id']] = {"id": row['id'],
"name": row['name'],
"uuid": row['uuid']}
query = (" SELECT id, name, uuid, energy_category_id, "
" is_counted, hourly_low_limit, hourly_high_limit, "
" cost_center_id, energy_item_id, master_meter_id, description "
" FROM tbl_meters "
" WHERE id = %s ")
cursor.execute(query, (id_,))
row = cursor.fetchone()
cursor.close()
cnx.disconnect()
if row is None:
raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
description='API.METER_NOT_FOUND')
else:
file_path = os.path.join(config.upload_path, row['uuid'] + ".svg")
try:
file = open(file_path, "rb")
except IOError:
meter_qrcode = qrcode.QRCode(
version=1,
error_correction=qrcode.ERROR_CORRECT_L,
box_size=10,
border=4
)
meter_qrcode.add_data("meter" + row['uuid'])
meter_qrcode.make_image(image_factory=qrcode.image.svg.SvgImage).save(file_path)
file = open(file_path, "rb")
finally:
qrcode_base64 = base64.b64encode(file.read())
file.close()
energy_category = energy_category_dict.get(row['energy_category_id'], None)
cost_center = cost_center_dict.get(row['cost_center_id'], None)
energy_item = energy_item_dict.get(row['energy_item_id'], None)
master_meter = master_meter_dict.get(row['master_meter_id'], None)
meta_result = {"id": row['id'],
"name": row['name'],
"uuid": row['uuid'],
"energy_category": energy_category,
"is_counted": True if row['is_counted'] else False,
"hourly_low_limit": row['hourly_low_limit'],
"hourly_high_limit": row['hourly_high_limit'],
"cost_center": cost_center,
"energy_item": energy_item,
"master_meter": master_meter,
"description": row['description'],
"qrcode": qrcode_base64}
resp.text = json.dumps(meta_result)
@staticmethod
@user_logger
def on_delete(req, resp, id_):
access_control(req)
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_METER_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT uuid "
" FROM tbl_meters "
" WHERE id = %s ", (id_,))
row = cursor.fetchone()
if row is None:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
description='API.METER_NOT_FOUND')
else:
meter_uuid = row[0]
# check if this meter is being used by virtual meters
cursor.execute(" SELECT vm.name "
" FROM tbl_variables va, tbl_virtual_meters vm "
" WHERE va.meter_id = %s AND va.meter_type = 'meter' AND va.virtual_meter_id = vm.id ",
(id_,))
row_virtual_meter = cursor.fetchone()
if row_virtual_meter is not None:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THIS_METER_IS_BEING_USED_BY_A_VIRTUAL_METER')
# check relation with child meters
cursor.execute(" SELECT id "
" FROM tbl_meters "
" WHERE master_meter_id = %s ", (id_,))
rows_child_meters = cursor.fetchall()
if rows_child_meters is not None and len(rows_child_meters) > 0:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THERE_IS_RELATION_WITH_CHILD_METERS')
# check relation with spaces
cursor.execute(" SELECT id "
" FROM tbl_spaces_meters "
" WHERE meter_id = %s ", (id_,))
rows_spaces = cursor.fetchall()
if rows_spaces is not None and len(rows_spaces) > 0:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THERE_IS_RELATION_WITH_SPACES')
# check relation with tenants
cursor.execute(" SELECT tenant_id "
" FROM tbl_tenants_meters "
" WHERE meter_id = %s ", (id_,))
rows_tenants = cursor.fetchall()
if rows_tenants is not None and len(rows_tenants) > 0:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THERE_IS_RELATION_WITH_TENANTS')
# check relation with stores
cursor.execute(" SELECT store_id "
" FROM tbl_stores_meters "
" WHERE meter_id = %s ", (id_,))
rows_stores = cursor.fetchall()
if rows_stores is not None and len(rows_stores) > 0:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THERE_IS_RELATION_WITH_STORES')
# check relation with shopfloors
cursor.execute(" SELECT shopfloor_id "
" FROM tbl_shopfloors_meters "
" WHERE meter_id = %s ", (id_,))
rows_shopfloors = cursor.fetchall()
if rows_shopfloors is not None and len(rows_shopfloors) > 0:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THERE_IS_RELATION_WITH_SHOPFLOORS')
# check relation with combined equipments
cursor.execute(" SELECT combined_equipment_id "
" FROM tbl_combined_equipments_meters "
" WHERE 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.disconnect()
raise falcon.HTTPError(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", (meter_uuid, meter_uuid,))
rows_combined_equipments = cursor.fetchall()
if rows_combined_equipments is not None and len(rows_combined_equipments) > 0:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(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_meters "
" WHERE meter_id = %s ", (id_,))
rows_equipments = cursor.fetchall()
if rows_equipments is not None and len(rows_equipments) > 0:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(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", (meter_uuid, meter_uuid, ))
rows_equipments = cursor.fetchall()
if rows_equipments is not None and len(rows_equipments) > 0:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THERE_IS_RELATION_WITH_EQUIPMENT_PARAMETERS')
# check relation with points
cursor.execute(" SELECT id "
" FROM tbl_meters_points "
" WHERE meter_id = %s ", (id_,))
rows_equipments = cursor.fetchall()
if rows_equipments is not None and len(rows_equipments) > 0:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THERE_IS_RELATION_WITH_POINTS')
# check relation with energy flow diagram links
cursor.execute(" SELECT id "
" FROM tbl_energy_flow_diagrams_links "
" WHERE meter_uuid = %s ", (meter_uuid,))
rows_links = cursor.fetchall()
if rows_links is not None and len(rows_links) > 0:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.THERE_IS_RELATION_WITH_ENERGY_FLOW_DIAGRAM_LINKS')
cursor.execute(" DELETE FROM tbl_meters WHERE id = %s ", (id_,))
cnx.commit()
cursor.close()
cnx.disconnect()
resp.status = falcon.HTTP_204
@staticmethod
@user_logger
def on_put(req, resp, id_):
"""Handles PUT requests"""
access_control(req)
try:
raw_json = req.stream.read().decode('utf-8')
except Exception as ex:
raise falcon.HTTPError(falcon.HTTP_400, title='API.EXCEPTION', description=ex)
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_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(falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_METER_NAME')
name = str.strip(new_values['data']['name'])
if 'energy_category_id' not in new_values['data'].keys() or \
not isinstance(new_values['data']['energy_category_id'], int) or \
new_values['data']['energy_category_id'] <= 0:
raise falcon.HTTPError(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(falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_IS_COUNTED_VALUE')
is_counted = new_values['data']['is_counted']
if 'hourly_low_limit' not in new_values['data'].keys() or \
not (isinstance(new_values['data']['hourly_low_limit'], float) or
isinstance(new_values['data']['hourly_low_limit'], int)):
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_HOURLY_LOW_LIMIT_VALUE')
hourly_low_limit = new_values['data']['hourly_low_limit']
if 'hourly_high_limit' not in new_values['data'].keys() or \
not (isinstance(new_values['data']['hourly_high_limit'], float) or
isinstance(new_values['data']['hourly_high_limit'], int)):
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_HOURLY_HIGH_LIMIT_VALUE')
hourly_high_limit = new_values['data']['hourly_high_limit']
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(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(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 'master_meter_id' in new_values['data'].keys():
if not isinstance(new_values['data']['master_meter_id'], int) or \
new_values['data']['master_meter_id'] <= 0 or \
new_values['data']['master_meter_id'] == int(id_):
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_MASTER_METER_ID')
master_meter_id = new_values['data']['master_meter_id']
else:
master_meter_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
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT name "
" FROM tbl_meters "
" WHERE id = %s ", (id_,))
if cursor.fetchone() is None:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
description='API.METER_NOT_FOUND')
cursor.execute(" SELECT name "
" FROM tbl_meters "
" WHERE name = %s AND id != %s ", (name, id_))
if cursor.fetchone() is not None:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.BAD_REQUEST',
description='API.METER_NAME_IS_ALREADY_IN_USE')
cursor.execute(" SELECT name "
" FROM tbl_energy_categories "
" WHERE id = %s ",
(new_values['data']['energy_category_id'],))
if cursor.fetchone() is None:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(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.disconnect()
raise falcon.HTTPError(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.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
description='API.ENERGY_ITEM_NOT_FOUND')
else:
if row[1] != energy_category_id:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.BAD_REQUEST',
description='API.ENERGY_ITEM_DOES_NOT_BELONG_TO_ENERGY_CATEGORY')
if master_meter_id is not None:
cursor.execute(" SELECT name, energy_category_id "
" FROM tbl_meters "
" WHERE id = %s ",
(new_values['data']['master_meter_id'],))
row = cursor.fetchone()
if row is None:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
description='API.MASTER_METER_NOT_FOUND')
else:
if row[1] != energy_category_id:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.BAD_REQUEST',
description='API.MASTER_METER_DOES_NOT_BELONG_TO_SAME_ENERGY_CATEGORY')
# todo: check all descendants against new_values['data']['master_meter_id']
if master_meter_id is not None:
cursor.execute(" SELECT name "
" FROM tbl_meters "
" WHERE id = %s AND master_meter_id = %s ",
(new_values['data']['master_meter_id'], id_))
row = cursor.fetchone()
if row is not None:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
description='API.CANNOT_SET_EXISTING_SUBMETER_AS_MASTER_METER')
update_row = (" UPDATE tbl_meters "
" SET name = %s, energy_category_id = %s, is_counted = %s, "
" hourly_low_limit = %s, hourly_high_limit = %s, "
" cost_center_id = %s, energy_item_id = %s, master_meter_id = %s, description = %s "
" WHERE id = %s ")
cursor.execute(update_row, (name,
energy_category_id,
is_counted,
hourly_low_limit,
hourly_high_limit,
cost_center_id,
energy_item_id,
master_meter_id,
description,
id_,))
cnx.commit()
cursor.close()
cnx.disconnect()
resp.status = falcon.HTTP_200
class MeterSubmeterCollection:
@staticmethod
def __init__():
"""Initializes MeterSubmeterCollection"""
pass
@staticmethod
def on_options(req, resp, id_):
resp.status = falcon.HTTP_200
@staticmethod
def on_get(req, resp, id_):
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_METER_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor(dictionary=True)
cursor.execute(" SELECT name, uuid "
" FROM tbl_meters "
" WHERE id = %s ", (id_,))
row = cursor.fetchone()
if row is None:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
description='API.METER_NOT_FOUND')
else:
master_meter = {"id": id_,
"name": row['name'],
"uuid": row['uuid']}
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['id']] = {"id": row['id'],
"name": row['name'],
"uuid": row['uuid']}
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['id']] = {"id": row['id'],
"name": row['name'],
"uuid": row['uuid']}
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['id']] = {"id": row['id'],
"name": row['name'],
"uuid": row['uuid']}
query = (" SELECT id, name, uuid, energy_category_id, "
" is_counted, hourly_low_limit, hourly_high_limit, "
" cost_center_id, energy_item_id, master_meter_id, description "
" FROM tbl_meters "
" WHERE master_meter_id = %s "
" ORDER BY id ")
cursor.execute(query, (id_, ))
rows_meters = cursor.fetchall()
result = list()
if rows_meters is not None and len(rows_meters) > 0:
for row in rows_meters:
energy_category = energy_category_dict.get(row['energy_category_id'], None)
cost_center = cost_center_dict.get(row['cost_center_id'], None)
energy_item = energy_item_dict.get(row['energy_item_id'], None)
meta_result = {"id": row['id'],
"name": row['name'],
"uuid": row['uuid'],
"energy_category": energy_category,
"is_counted": True if row['is_counted'] else False,
"hourly_low_limit": row['hourly_low_limit'],
"hourly_high_limit": row['hourly_high_limit'],
"cost_center": cost_center,
"energy_item": energy_item,
"master_meter": master_meter,
"description": row['description']}
result.append(meta_result)
cursor.close()
cnx.disconnect()
resp.text = json.dumps(result)
class MeterPointCollection:
@staticmethod
def __init__():
"""Initializes MeterPointCollection"""
pass
@staticmethod
def on_options(req, resp, id_):
resp.status = falcon.HTTP_200
@staticmethod
def on_get(req, resp, id_):
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_METER_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT name "
" FROM tbl_meters "
" WHERE id = %s ", (id_,))
if cursor.fetchone() is None:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
description='API.METER_NOT_FOUND')
query = (" SELECT p.id, p.name, "
" ds.id, ds.name, ds.uuid, "
" p.address "
" FROM tbl_points p, tbl_meters_points mp, tbl_data_sources ds "
" WHERE mp.meter_id = %s AND p.id = mp.point_id AND p.data_source_id = ds.id "
" ORDER BY p.name ")
cursor.execute(query, (id_,))
rows = cursor.fetchall()
result = list()
if rows is not None and len(rows) > 0:
for row in rows:
meta_result = {"id": row[0], "name": row[1],
"data_source": {"id": row[2], "name": row[3], "uuid": row[4]},
"address": row[5]}
result.append(meta_result)
resp.text = json.dumps(result)
@staticmethod
@user_logger
def on_post(req, resp, id_):
"""Handles POST requests"""
access_control(req)
try:
raw_json = req.stream.read().decode('utf-8')
except Exception as ex:
raise falcon.HTTPError(falcon.HTTP_400, title='API.EXCEPTION', description=ex)
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_METER_ID')
new_values = json.loads(raw_json)
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT name "
" from tbl_meters "
" WHERE id = %s ", (id_,))
if cursor.fetchone() is None:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
description='API.METER_NOT_FOUND')
cursor.execute(" SELECT name "
" FROM tbl_points "
" WHERE id = %s ", (new_values['data']['point_id'],))
if cursor.fetchone() is None:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
description='API.POINT_NOT_FOUND')
query = (" SELECT id "
" FROM tbl_meters_points "
" WHERE meter_id = %s AND point_id = %s")
cursor.execute(query, (id_, new_values['data']['point_id'],))
if cursor.fetchone() is not None:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_400, title='API.ERROR',
description='API.METER_POINT_RELATION_EXISTS')
add_row = (" INSERT INTO tbl_meters_points (meter_id, point_id) "
" VALUES (%s, %s) ")
cursor.execute(add_row, (id_, new_values['data']['point_id'],))
new_id = cursor.lastrowid
cnx.commit()
cursor.close()
cnx.disconnect()
resp.status = falcon.HTTP_201
resp.location = '/meters/' + str(id_) + '/points/' + str(new_values['data']['point_id'])
class MeterPointItem:
@staticmethod
def __init__():
"""Initializes MeterPointItem"""
pass
@staticmethod
def on_options(req, resp, id_, pid):
resp.status = falcon.HTTP_200
@staticmethod
@user_logger
def on_delete(req, resp, id_, pid):
"""Handles DELETE requests"""
access_control(req)
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_METER_ID')
if not pid.isdigit() or int(pid) <= 0:
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_POINT_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT name "
" FROM tbl_meters "
" WHERE id = %s ", (id_,))
if cursor.fetchone() is None:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
description='API.METER_NOT_FOUND')
cursor.execute(" SELECT name "
" FROM tbl_points "
" WHERE id = %s ", (pid,))
if cursor.fetchone() is None:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
description='API.POINT_NOT_FOUND')
cursor.execute(" SELECT id "
" FROM tbl_meters_points "
" WHERE meter_id = %s AND point_id = %s ", (id_, pid))
if cursor.fetchone() is None:
cursor.close()
cnx.disconnect()
raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
description='API.METER_POINT_RELATION_NOT_FOUND')
cursor.execute(" DELETE FROM tbl_meters_points WHERE meter_id = %s AND point_id = %s ", (id_, pid))
cnx.commit()
cursor.close()
cnx.disconnect()
resp.status = falcon.HTTP_204