myems-api/core/tariff.py
import uuid
from datetime import datetime, timedelta, timezone
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 TariffCollection:
def __init__(self):
""""Initializes TariffCollection"""
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 t.id, t.name, t.uuid, "
" ec.id AS energy_category_id, ec.name AS energy_category_name, "
" t.tariff_type, t.unit_of_price, "
" t.valid_from_datetime_utc, t.valid_through_datetime_utc "
" FROM tbl_tariffs t, tbl_energy_categories ec "
" WHERE t.energy_category_id = ec.id "
" ORDER BY t.name ")
cursor.execute(query)
rows = cursor.fetchall()
timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6])
if config.utc_offset[0] == '-':
timezone_offset = -timezone_offset
result = list()
if rows is not None and len(rows) > 0:
for row in rows:
meta_result = {"id": row[0],
"name": row[1],
"uuid": row[2],
"energy_category": {"id": row[3],
"name": row[4]},
"tariff_type": row[5],
"unit_of_price": row[6],
"valid_from": (row[7].replace(tzinfo=timezone.utc)
+ timedelta(minutes=timezone_offset)).strftime('%Y-%m-%dT%H:%M:%S'),
"valid_through": (row[8].replace(tzinfo=timezone.utc)
+ timedelta(minutes=timezone_offset)).strftime('%Y-%m-%dT%H:%M:%S')}
if meta_result['tariff_type'] == 'timeofuse':
meta_result['timeofuse'] = list()
query = (" SELECT start_time_of_day, end_time_of_day, peak_type, price "
" FROM tbl_tariffs_timeofuses "
" WHERE tariff_id = %s "
" ORDER BY id")
cursor.execute(query, (meta_result['id'],))
rows_timeofuses = cursor.fetchall()
if rows_timeofuses is not None and len(rows_timeofuses) > 0:
for row_timeofuse in rows_timeofuses:
meta_data = {"start_time_of_day": str(row_timeofuse[0]),
"end_time_of_day": str(row_timeofuse[1]),
"peak_type": row_timeofuse[2],
"price": row_timeofuse[3]}
meta_result['timeofuse'].append(meta_data)
else:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.ERROR',
description='API.INVALID_TARIFF_TYPE')
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_METER_NAME')
name = str.strip(new_values['data']['name'])
if 'energy_category' not in new_values['data'].keys() or \
'id' not in new_values['data']['energy_category'].keys() or \
not isinstance(new_values['data']['energy_category']['id'], int) 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 'tariff_type' not in new_values['data'].keys() \
or str.strip(new_values['data']['tariff_type']) not in ('timeofuse',):
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.INVALID_TARIFF_TYPE')
tariff_type = str.strip(new_values['data']['tariff_type'])
if new_values['data']['tariff_type'] == 'timeofuse':
if new_values['data']['timeofuse'] is None:
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.INVALID_TARIFF_TIME_OF_USE_PRICING')
if 'unit_of_price' not in new_values['data'].keys() or \
not isinstance(new_values['data']['unit_of_price'], str) or \
len(str.strip(new_values['data']['unit_of_price'])) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_UNIT_OF_PRICE')
unit_of_price = str.strip(new_values['data']['unit_of_price'])
timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6])
if config.utc_offset[0] == '-':
timezone_offset = -timezone_offset
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT name "
" FROM tbl_tariffs "
" WHERE name = %s ", (name,))
if cursor.fetchone() is not None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.TARIFF_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')
# todo: validate datetime values
valid_from = datetime.strptime(new_values['data']['valid_from'], '%Y-%m-%dT%H:%M:%S')
valid_from = valid_from.replace(tzinfo=timezone.utc)
valid_from -= timedelta(minutes=timezone_offset)
valid_through = datetime.strptime(new_values['data']['valid_through'], '%Y-%m-%dT%H:%M:%S')
valid_through = valid_through.replace(tzinfo=timezone.utc)
valid_through -= timedelta(minutes=timezone_offset)
add_row = (" INSERT INTO tbl_tariffs "
" (name, uuid, energy_category_id, tariff_type, unit_of_price, "
" valid_from_datetime_utc, valid_through_datetime_utc ) "
" VALUES (%s, %s, %s, %s, %s, %s, %s) ")
cursor.execute(add_row, (name,
str(uuid.uuid4()),
energy_category_id,
tariff_type,
unit_of_price,
valid_from,
valid_through))
new_id = cursor.lastrowid
cnx.commit()
# insert time of use prices
if tariff_type == 'timeofuse':
for timeofuse in new_values['data']['timeofuse']:
add_timeofuse = (" INSERT INTO tbl_tariffs_timeofuses "
" (tariff_id, start_time_of_day, end_time_of_day, peak_type, price) "
" VALUES (%s, %s, %s, %s, %s) ")
cursor.execute(add_timeofuse, (new_id,
timeofuse['start_time_of_day'],
timeofuse['end_time_of_day'],
timeofuse['peak_type'],
timeofuse['price']))
cnx.commit()
cursor.close()
cnx.close()
resp.status = falcon.HTTP_201
resp.location = '/tariffs/' + str(new_id)
class TariffItem:
def __init__(self):
""""Initializes TariffItem"""
pass
@staticmethod
def on_options(req, resp, id_):
resp.status = falcon.HTTP_200
@staticmethod
def on_get(req, resp, id_):
"""Handles GET requests"""
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_TARIFF_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
query = (" SELECT t.id, t.name, t.uuid, "
" ec.id AS energy_category_id, ec.name AS energy_category_name, "
" t.tariff_type, "
" t.unit_of_price, "
" t.valid_from_datetime_utc, t.valid_through_datetime_utc "
" FROM tbl_tariffs t, tbl_energy_categories ec "
" WHERE t.energy_category_id = ec.id AND t.id = %s ")
cursor.execute(query, (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.TARIFF_NOT_FOUND')
timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6])
if config.utc_offset[0] == '-':
timezone_offset = -timezone_offset
result = {"id": row[0],
"name": row[1],
"uuid": row[2],
"energy_category": {"id": row[3],
"name": row[4]},
"tariff_type": row[5],
"unit_of_price": row[6],
"valid_from": (row[7].replace(tzinfo=timezone.utc)
+ timedelta(minutes=timezone_offset)).strftime('%Y-%m-%dT%H:%M:%S'),
"valid_through": (row[8].replace(tzinfo=timezone.utc)
+ timedelta(minutes=timezone_offset)).strftime('%Y-%m-%dT%H:%M:%S')}
if result['tariff_type'] == 'timeofuse':
result['timeofuse'] = list()
query = (" SELECT start_time_of_day, end_time_of_day, peak_type, price "
" FROM tbl_tariffs_timeofuses"
" WHERE tariff_id = %s ")
cursor.execute(query, (result['id'],))
rows_timeofuses = cursor.fetchall()
if rows_timeofuses is not None and len(rows_timeofuses) > 0:
for row_timeofuse in rows_timeofuses:
meta_data = {"start_time_of_day": str(row_timeofuse[0]),
"end_time_of_day": str(row_timeofuse[1]),
"peak_type": row_timeofuse[2],
"price": row_timeofuse[3]}
result['timeofuse'].append(meta_data)
cursor.close()
cnx.close()
resp.text = json.dumps(result)
@staticmethod
@user_logger
def on_delete(req, resp, id_):
"""Handles DELETE requests"""
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_TARIFF_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT name "
" FROM tbl_tariffs "
" 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.TARIFF_NOT_FOUND')
cursor.execute(" SELECT id "
" FROM tbl_cost_centers_tariffs "
" WHERE tariff_id = %s ", (id_,))
rows = cursor.fetchall()
if rows is not None and len(rows) > 0:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.TARIFF_IN_USE')
cursor.execute(" DELETE FROM tbl_tariffs_timeofuses WHERE tariff_id = %s ", (id_,))
cnx.commit()
cursor.execute(" DELETE FROM tbl_tariffs 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_TARIFF_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_METER_NAME')
name = str.strip(new_values['data']['name'])
if 'energy_category' not in new_values['data'].keys() or \
'id' not in new_values['data']['energy_category'].keys() or \
not isinstance(new_values['data']['energy_category']['id'], int) 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 'tariff_type' not in new_values['data'].keys() \
or str.strip(new_values['data']['tariff_type']) not in ('timeofuse',):
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.INVALID_TARIFF_TYPE')
tariff_type = str.strip(new_values['data']['tariff_type'])
if new_values['data']['tariff_type'] == 'timeofuse':
if new_values['data']['timeofuse'] is None:
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.INVALID_TARIFF_TIME_OF_USE_PRICING')
if 'unit_of_price' not in new_values['data'].keys() or \
not isinstance(new_values['data']['unit_of_price'], str) or \
len(str.strip(new_values['data']['unit_of_price'])) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_UNIT_OF_PRICE')
unit_of_price = str.strip(new_values['data']['unit_of_price'])
timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6])
if config.utc_offset[0] == '-':
timezone_offset = -timezone_offset
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
# check if the tariff exist
query = (" SELECT name "
" FROM tbl_tariffs "
" WHERE id = %s ")
cursor.execute(query, (id_,))
cursor.fetchone()
if cursor.rowcount != 1:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.TARIFF_NOT_FOUND')
cursor.execute(" SELECT name "
" FROM tbl_tariffs "
" 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.TARIFF_NAME_IS_ALREADY_IN_USE')
valid_from = datetime.strptime(new_values['data']['valid_from'], '%Y-%m-%dT%H:%M:%S')
valid_from = valid_from.replace(tzinfo=timezone.utc)
valid_from -= timedelta(minutes=timezone_offset)
valid_through = datetime.strptime(new_values['data']['valid_through'], '%Y-%m-%dT%H:%M:%S')
valid_through = valid_through.replace(tzinfo=timezone.utc)
valid_through -= timedelta(minutes=timezone_offset)
# update tariff itself
update_row = (" UPDATE tbl_tariffs "
" SET name = %s, energy_category_id = %s, tariff_type = %s, unit_of_price = %s, "
" valid_from_datetime_utc = %s , valid_through_datetime_utc = %s "
" WHERE id = %s ")
cursor.execute(update_row, (name,
energy_category_id,
tariff_type,
unit_of_price,
valid_from,
valid_through,
id_,))
cnx.commit()
# update prices of the tariff
if tariff_type == 'timeofuse':
if 'timeofuse' not in new_values['data'].keys() or new_values['data']['timeofuse'] is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.INVALID_TARIFF_TIME_OF_USE_PRICING')
else:
# remove all (possible) exist prices
cursor.execute(" DELETE FROM tbl_tariffs_timeofuses "
" WHERE tariff_id = %s ",
(id_,))
cnx.commit()
for timeofuse in new_values['data']['timeofuse']:
add_timeofuse = (" INSERT INTO tbl_tariffs_timeofuses "
" (tariff_id, start_time_of_day, end_time_of_day, peak_type, price) "
" VALUES (%s, %s, %s, %s, %s) ")
cursor.execute(add_timeofuse, (id_,
timeofuse['start_time_of_day'],
timeofuse['end_time_of_day'],
timeofuse['peak_type'],
timeofuse['price']))
cnx.commit()
cursor.close()
cnx.close()
resp.status = falcon.HTTP_200
class TariffExport:
def __init__(self):
""""Initializes TariffExport"""
pass
@staticmethod
def on_options(req, resp, id_):
resp.status = falcon.HTTP_200
@staticmethod
def on_get(req, resp, id_):
"""Handles GET requests"""
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_TARIFF_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
query = (" SELECT t.id, t.name, t.uuid, "
" ec.id AS energy_category_id, ec.name AS energy_category_name, "
" t.tariff_type, "
" t.unit_of_price, "
" t.valid_from_datetime_utc, t.valid_through_datetime_utc "
" FROM tbl_tariffs t, tbl_energy_categories ec "
" WHERE t.energy_category_id = ec.id AND t.id = %s ")
cursor.execute(query, (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.TARIFF_NOT_FOUND')
timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6])
if config.utc_offset[0] == '-':
timezone_offset = -timezone_offset
result = {"id": row[0],
"name": row[1],
"uuid": row[2],
"energy_category": {"id": row[3],
"name": row[4]},
"tariff_type": row[5],
"unit_of_price": row[6],
"valid_from": (row[7].replace(tzinfo=timezone.utc)
+ timedelta(minutes=timezone_offset)).strftime('%Y-%m-%dT%H:%M:%S'),
"valid_through": (row[8].replace(tzinfo=timezone.utc)
+ timedelta(minutes=timezone_offset)).strftime('%Y-%m-%dT%H:%M:%S')}
if result['tariff_type'] == 'timeofuse':
result['timeofuse'] = list()
query = (" SELECT start_time_of_day, end_time_of_day, peak_type, price "
" FROM tbl_tariffs_timeofuses"
" WHERE tariff_id = %s ")
cursor.execute(query, (result['id'],))
rows_timeofuses = cursor.fetchall()
if rows_timeofuses is not None and len(rows_timeofuses) > 0:
for row_timeofuse in rows_timeofuses:
meta_data = {"start_time_of_day": str(row_timeofuse[0]),
"end_time_of_day": str(row_timeofuse[1]),
"peak_type": row_timeofuse[2],
"price": row_timeofuse[3]}
result['timeofuse'].append(meta_data)
cursor.close()
cnx.close()
resp.text = json.dumps(result)
class TariffImport:
def __init__(self):
""""Initializes TariffImport"""
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_METER_NAME')
name = str.strip(new_values['name'])
if 'energy_category' not in new_values.keys() or \
'id' not in new_values['energy_category'].keys() or \
not isinstance(new_values['energy_category']['id'], int) 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 'tariff_type' not in new_values.keys() \
or str.strip(new_values['tariff_type']) not in ('timeofuse',):
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.INVALID_TARIFF_TYPE')
tariff_type = str.strip(new_values['tariff_type'])
if new_values['tariff_type'] == 'timeofuse':
if new_values['timeofuse'] is None:
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.INVALID_TARIFF_TIME_OF_USE_PRICING')
if 'unit_of_price' not in new_values.keys() or \
not isinstance(new_values['unit_of_price'], str) or \
len(str.strip(new_values['unit_of_price'])) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_UNIT_OF_PRICE')
unit_of_price = str.strip(new_values['unit_of_price'])
timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6])
if config.utc_offset[0] == '-':
timezone_offset = -timezone_offset
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT name "
" FROM tbl_tariffs "
" WHERE name = %s ", (name,))
if cursor.fetchone() is not None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.TARIFF_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')
# todo: validate datetime values
valid_from = datetime.strptime(new_values['valid_from'], '%Y-%m-%dT%H:%M:%S')
valid_from = valid_from.replace(tzinfo=timezone.utc)
valid_from -= timedelta(minutes=timezone_offset)
valid_through = datetime.strptime(new_values['valid_through'], '%Y-%m-%dT%H:%M:%S')
valid_through = valid_through.replace(tzinfo=timezone.utc)
valid_through -= timedelta(minutes=timezone_offset)
add_row = (" INSERT INTO tbl_tariffs "
" (name, uuid, energy_category_id, tariff_type, unit_of_price, "
" valid_from_datetime_utc, valid_through_datetime_utc ) "
" VALUES (%s, %s, %s, %s, %s, %s, %s) ")
cursor.execute(add_row, (name,
str(uuid.uuid4()),
energy_category_id,
tariff_type,
unit_of_price,
valid_from,
valid_through))
new_id = cursor.lastrowid
cnx.commit()
# insert time of use prices
if tariff_type == 'timeofuse':
for timeofuse in new_values['timeofuse']:
add_timeofuse = (" INSERT INTO tbl_tariffs_timeofuses "
" (tariff_id, start_time_of_day, end_time_of_day, peak_type, price) "
" VALUES (%s, %s, %s, %s, %s) ")
cursor.execute(add_timeofuse, (new_id,
timeofuse['start_time_of_day'],
timeofuse['end_time_of_day'],
timeofuse['peak_type'],
timeofuse['price']))
cnx.commit()
cursor.close()
cnx.close()
resp.status = falcon.HTTP_201
resp.location = '/tariffs/' + str(new_id)
class TariffClone:
def __init__(self):
""""Initializes TariffClone"""
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_TARIFF_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
query = (" SELECT t.id, t.name, t.uuid, "
" ec.id AS energy_category_id, ec.name AS energy_category_name, "
" t.tariff_type, "
" t.unit_of_price, "
" t.valid_from_datetime_utc, t.valid_through_datetime_utc "
" FROM tbl_tariffs t, tbl_energy_categories ec "
" WHERE t.energy_category_id = ec.id AND t.id = %s ")
cursor.execute(query, (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.TARIFF_NOT_FOUND')
result = {"id": row[0],
"name": row[1],
"uuid": row[2],
"energy_category": {"id": row[3],
"name": row[4]},
"tariff_type": row[5],
"unit_of_price": row[6],
"valid_from": row[7].strftime('%Y-%m-%dT%H:%M:%S'),
"valid_through": row[8].strftime('%Y-%m-%dT%H:%M:%S')}
if result['tariff_type'] == 'timeofuse':
result['timeofuse'] = list()
query = (" SELECT start_time_of_day, end_time_of_day, peak_type, price "
" FROM tbl_tariffs_timeofuses"
" WHERE tariff_id = %s ")
cursor.execute(query, (result['id'],))
rows_timeofuses = cursor.fetchall()
if rows_timeofuses is not None and len(rows_timeofuses) > 0:
for row_timeofuse in rows_timeofuses:
meta_data = {"start_time_of_day": str(row_timeofuse[0]),
"end_time_of_day": str(row_timeofuse[1]),
"peak_type": row_timeofuse[2],
"price": row_timeofuse[3]}
result['timeofuse'].append(meta_data)
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(result['name'])
+ (datetime.now()
+ timedelta(minutes=timezone_offset)).isoformat(sep='-', timespec='seconds'))
add_row = (" INSERT INTO tbl_tariffs "
" (name, uuid, energy_category_id, tariff_type, unit_of_price, "
" valid_from_datetime_utc, valid_through_datetime_utc ) "
" VALUES (%s, %s, %s, %s, %s, %s, %s) ")
cursor.execute(add_row, (new_name,
str(uuid.uuid4()),
result['energy_category']['id'],
result['tariff_type'],
result['unit_of_price'],
result['valid_from'],
result['valid_through']))
new_id = cursor.lastrowid
cnx.commit()
# insert time of use prices
if result['tariff_type'] == 'timeofuse':
for timeofuse in result['timeofuse']:
add_timeofuse = (" INSERT INTO tbl_tariffs_timeofuses "
" (tariff_id, start_time_of_day, end_time_of_day, peak_type, price) "
" VALUES (%s, %s, %s, %s, %s) ")
cursor.execute(add_timeofuse, (new_id,
timeofuse['start_time_of_day'],
timeofuse['end_time_of_day'],
timeofuse['peak_type'],
timeofuse['price']))
cnx.commit()
cursor.close()
cnx.close()
resp.status = falcon.HTTP_201
resp.location = '/tariffs/' + str(new_id)