535 lines
25 KiB
Python
535 lines
25 KiB
Python
import falcon
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import simplejson as json
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import mysql.connector
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import config
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import uuid
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from datetime import datetime, timedelta, timezone
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from core.useractivity import user_logger, access_control
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class TariffCollection:
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@staticmethod
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def __init__():
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""""Initializes TariffCollection"""
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pass
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@staticmethod
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def on_options(req, resp):
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resp.status = falcon.HTTP_200
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@staticmethod
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def on_get(req, resp):
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cnx = mysql.connector.connect(**config.myems_system_db)
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cursor = cnx.cursor(dictionary=True)
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query = (" SELECT t.id, t.name, t.uuid, "
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" ec.id AS energy_category_id, ec.name AS energy_category_name, "
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" t.tariff_type, t.unit_of_price, "
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" t.valid_from_datetime_utc, t.valid_through_datetime_utc "
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" FROM tbl_tariffs t, tbl_energy_categories ec "
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" WHERE t.energy_category_id = ec.id "
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" ORDER BY t.name ")
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cursor.execute(query)
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rows = cursor.fetchall()
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timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6])
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if config.utc_offset[0] == '-':
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timezone_offset = -timezone_offset
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result = list()
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if rows is not None and len(rows) > 0:
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for row in rows:
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valid_from = row['valid_from_datetime_utc'].replace(tzinfo=timezone.utc) + \
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timedelta(minutes=timezone_offset)
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valid_through = row['valid_through_datetime_utc'].replace(tzinfo=timezone.utc) + \
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timedelta(minutes=timezone_offset)
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meta_result = {"id": row['id'],
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"name": row['name'],
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"uuid": row['uuid'],
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"energy_category": {"id": row['energy_category_id'],
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"name": row['energy_category_name']},
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"tariff_type": row['tariff_type'],
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"unit_of_price": row['unit_of_price'],
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"valid_from": valid_from.strftime('%Y-%m-%dT%H:%M:%S'),
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"valid_through": valid_through.strftime('%Y-%m-%dT%H:%M:%S')}
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if meta_result['tariff_type'] == 'block':
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meta_result['block'] = list()
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query = (" SELECT start_amount, end_amount, price "
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" FROM tbl_tariffs_blocks "
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" WHERE tariff_id = %s "
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" ORDER BY id ")
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cursor.execute(query, (meta_result['id'],))
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rows_block = cursor.fetchall()
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if rows_block is not None and len(rows_block) > 0:
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for row_block in rows_block:
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meta_data = {"start_amount": row_block['start_amount'],
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"end_amount": row_block['end_amount'],
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"price": row_block['price']}
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meta_result['block'].append(meta_data)
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elif meta_result['tariff_type'] == 'timeofuse':
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meta_result['timeofuse'] = list()
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query = (" SELECT start_time_of_day, end_time_of_day, peak_type, price "
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" FROM tbl_tariffs_timeofuses "
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" WHERE tariff_id = %s "
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" ORDER BY id")
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cursor.execute(query, (meta_result['id'],))
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rows_timeofuses = cursor.fetchall()
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if rows_timeofuses is not None and len(rows_timeofuses) > 0:
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for row_timeofuse in rows_timeofuses:
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meta_data = {"start_time_of_day": str(row_timeofuse['start_time_of_day']),
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"end_time_of_day": str(row_timeofuse['end_time_of_day']),
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"peak_type": row_timeofuse['peak_type'],
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"price": row_timeofuse['price']}
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meta_result['timeofuse'].append(meta_data)
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else:
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cursor.close()
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cnx.disconnect()
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.ERROR',
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description='API.INVALID_TARIFF_TYPE')
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result.append(meta_result)
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cursor.close()
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cnx.disconnect()
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resp.text = json.dumps(result)
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@staticmethod
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@user_logger
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def on_post(req, resp):
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"""Handles POST requests"""
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access_control(req)
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try:
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raw_json = req.stream.read().decode('utf-8')
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except Exception as ex:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.ERROR', description=ex)
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new_values = json.loads(raw_json)
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if 'name' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['name'], str) or \
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len(str.strip(new_values['data']['name'])) == 0:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.INVALID_METER_NAME')
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name = str.strip(new_values['data']['name'])
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if 'energy_category' not in new_values['data'].keys() or \
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'id' not in new_values['data']['energy_category'].keys() or \
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not isinstance(new_values['data']['energy_category']['id'], int) or \
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new_values['data']['energy_category']['id'] <= 0:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.INVALID_ENERGY_CATEGORY_ID')
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energy_category_id = new_values['data']['energy_category']['id']
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if 'tariff_type' not in new_values['data'].keys() \
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or str.strip(new_values['data']['tariff_type']) not in ('block', 'timeofuse'):
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.INVALID_TARIFF_TYPE')
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tariff_type = str.strip(new_values['data']['tariff_type'])
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if new_values['data']['tariff_type'] == 'block':
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if new_values['data']['block'] is None:
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.INVALID_TARIFF_BLOCK_PRICING')
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elif new_values['data']['tariff_type'] == 'timeofuse':
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if new_values['data']['timeofuse'] is None:
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.INVALID_TARIFF_TIME_OF_USE_PRICING')
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if 'unit_of_price' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['unit_of_price'], str) or \
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len(str.strip(new_values['data']['unit_of_price'])) == 0:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.INVALID_UNIT_OF_PRICE')
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unit_of_price = str.strip(new_values['data']['unit_of_price'])
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timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6])
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if config.utc_offset[0] == '-':
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timezone_offset = -timezone_offset
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cnx = mysql.connector.connect(**config.myems_system_db)
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cursor = cnx.cursor()
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cursor.execute(" SELECT name "
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" FROM tbl_tariffs "
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" WHERE name = %s ", (name,))
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if cursor.fetchone() is not None:
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cursor.close()
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cnx.disconnect()
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.TARIFF_NAME_IS_ALREADY_IN_USE')
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cursor.execute(" SELECT name "
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" FROM tbl_energy_categories "
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" WHERE id = %s ", (energy_category_id,))
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if cursor.fetchone() is None:
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cursor.close()
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cnx.disconnect()
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raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
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description='API.ENERGY_CATEGORY_NOT_FOUND')
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# todo: validate datetime values
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valid_from = datetime.strptime(new_values['data']['valid_from'], '%Y-%m-%dT%H:%M:%S')
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valid_from = valid_from.replace(tzinfo=timezone.utc)
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valid_from -= timedelta(minutes=timezone_offset)
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valid_through = datetime.strptime(new_values['data']['valid_through'], '%Y-%m-%dT%H:%M:%S')
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valid_through = valid_through.replace(tzinfo=timezone.utc)
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valid_through -= timedelta(minutes=timezone_offset)
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add_row = (" INSERT INTO tbl_tariffs "
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" (name, uuid, energy_category_id, tariff_type, unit_of_price, "
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" valid_from_datetime_utc, valid_through_datetime_utc ) "
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" VALUES (%s, %s, %s, %s, %s, %s, %s) ")
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cursor.execute(add_row, (name,
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str(uuid.uuid4()),
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energy_category_id,
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tariff_type,
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unit_of_price,
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valid_from,
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valid_through))
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new_id = cursor.lastrowid
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cnx.commit()
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# insert block prices
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if tariff_type == 'block':
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for block in new_values['data']['block']:
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add_block = (" INSERT INTO tbl_tariffs_blocks "
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" (tariff_id, start_amount, end_amount, price) "
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" VALUES (%s, %s, %s, %s) ")
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cursor.execute(add_block, (new_id, block['start_amount'], block['end_amount'], block['price']))
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cnx.commit()
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# insert time of use prices
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elif tariff_type == 'timeofuse':
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for timeofuse in new_values['data']['timeofuse']:
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add_timeofuse = (" INSERT INTO tbl_tariffs_timeofuses "
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" (tariff_id, start_time_of_day, end_time_of_day, peak_type, price) "
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" VALUES (%s, %s, %s, %s, %s) ")
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cursor.execute(add_timeofuse, (new_id,
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timeofuse['start_time_of_day'],
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timeofuse['end_time_of_day'],
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timeofuse['peak_type'],
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timeofuse['price']))
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cnx.commit()
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cursor.close()
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cnx.disconnect()
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resp.status = falcon.HTTP_201
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resp.location = '/tariffs/' + str(new_id)
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class TariffItem:
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@staticmethod
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def __init__():
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""""Initializes TariffItem"""
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pass
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@staticmethod
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def on_options(req, resp, id_):
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resp.status = falcon.HTTP_200
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@staticmethod
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def on_get(req, resp, id_):
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if not id_.isdigit() or int(id_) <= 0:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.INVALID_TARIFF_ID')
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cnx = mysql.connector.connect(**config.myems_system_db)
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cursor = cnx.cursor(dictionary=True)
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query = (" SELECT t.id, t.name, t.uuid, "
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" ec.id AS energy_category_id, ec.name AS energy_category_name, "
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" t.tariff_type, "
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" t.unit_of_price, "
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" t.valid_from_datetime_utc, t.valid_through_datetime_utc "
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" FROM tbl_tariffs t, tbl_energy_categories ec "
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" WHERE t.energy_category_id = ec.id AND t.id =%s ")
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cursor.execute(query, (id_,))
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row = cursor.fetchone()
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if row is None:
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cursor.close()
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cnx.disconnect()
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raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
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description='API.TARIFF_NOT_FOUND')
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timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6])
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if config.utc_offset[0] == '-':
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timezone_offset = -timezone_offset
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valid_from = row['valid_from_datetime_utc'].replace(tzinfo=timezone.utc) + \
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timedelta(minutes=timezone_offset)
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valid_through = row['valid_through_datetime_utc'].replace(tzinfo=timezone.utc) + \
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timedelta(minutes=timezone_offset)
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result = {"id": row['id'],
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"name": row['name'],
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"uuid": row['uuid'],
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"energy_category": {"id": row['energy_category_id'],
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"name": row['energy_category_name']},
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"tariff_type": row['tariff_type'],
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"unit_of_price": row['unit_of_price'],
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"valid_from": valid_from.strftime('%Y-%m-%dT%H:%M:%S'),
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"valid_through": valid_through.strftime('%Y-%m-%dT%H:%M:%S')}
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if result['tariff_type'] == 'block':
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result['block'] = list()
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query = (" SELECT start_amount, end_amount, price "
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" FROM tbl_tariffs_blocks "
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" WHERE tariff_id = %s "
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" ORDER BY id")
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cursor.execute(query, (result['id'],))
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rows_block = cursor.fetchall()
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if rows_block is not None and len(rows_block) > 0:
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for row_block in rows_block:
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meta_data = {"start_amount": row_block['start_amount'],
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"end_amount": row_block['end_amount'],
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"price": row_block['price']}
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result['block'].append(meta_data)
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elif result['tariff_type'] == 'timeofuse':
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result['timeofuse'] = list()
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query = (" SELECT start_time_of_day, end_time_of_day, peak_type, price "
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" FROM tbl_tariffs_timeofuses"
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" WHERE tariff_id =%s ")
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cursor.execute(query, (result['id'],))
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rows_timeofuses = cursor.fetchall()
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if rows_timeofuses is not None and len(rows_timeofuses) > 0:
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for row_timeofuse in rows_timeofuses:
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meta_data = {"start_time_of_day": str(row_timeofuse['start_time_of_day']),
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"end_time_of_day": str(row_timeofuse['end_time_of_day']),
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"peak_type": row_timeofuse['peak_type'],
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"price": row_timeofuse['price']}
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result['timeofuse'].append(meta_data)
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cursor.close()
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cnx.disconnect()
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resp.text = json.dumps(result)
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@staticmethod
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@user_logger
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def on_delete(req, resp, id_):
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access_control(req)
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if not id_.isdigit() or int(id_) <= 0:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.INVALID_TARIFF_ID')
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cnx = mysql.connector.connect(**config.myems_system_db)
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cursor = cnx.cursor()
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cursor.execute(" SELECT name "
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" FROM tbl_tariffs "
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" WHERE id = %s ", (id_,))
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if cursor.fetchone() is None:
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cursor.close()
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cnx.disconnect()
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raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
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description='API.TARIFF_NOT_FOUND')
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cursor.execute(" SELECT id "
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" FROM tbl_tariffs_blocks "
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" WHERE tariff_id = %s ", (id_,))
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rows = cursor.fetchall()
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if rows is not None and len(rows) > 0:
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cursor.close()
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cnx.disconnect()
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.TARIFF_NOT_EMPTY')
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cursor.execute(" SELECT id "
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" FROM tbl_tariffs_timeofuses "
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" WHERE tariff_id = %s ", (id_,))
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rows = cursor.fetchall()
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if rows is not None and len(rows) > 0:
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cursor.close()
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cnx.disconnect()
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.TARIFF_NOT_EMPTY')
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cursor.execute(" SELECT id "
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" FROM tbl_cost_centers_tariffs "
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" WHERE tariff_id = %s ", (id_,))
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rows = cursor.fetchall()
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if rows is not None and len(rows) > 0:
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cursor.close()
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cnx.disconnect()
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.TARIFF_IN_USE')
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cursor.execute(" DELETE FROM tbl_tariffs WHERE id = %s ", (id_,))
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cnx.commit()
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cursor.close()
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cnx.disconnect()
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resp.status = falcon.HTTP_204
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@staticmethod
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@user_logger
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def on_put(req, resp, id_):
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"""Handles PUT requests"""
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access_control(req)
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try:
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raw_json = req.stream.read().decode('utf-8')
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except Exception as ex:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.ERROR', description=ex)
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if not id_.isdigit() or int(id_) <= 0:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.INVALID_TARIFF_ID')
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new_values = json.loads(raw_json)
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if 'name' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['name'], str) or \
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len(str.strip(new_values['data']['name'])) == 0:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.INVALID_METER_NAME')
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name = str.strip(new_values['data']['name'])
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if 'energy_category' not in new_values['data'].keys() or \
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'id' not in new_values['data']['energy_category'].keys() or \
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not isinstance(new_values['data']['energy_category']['id'], int) or \
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new_values['data']['energy_category']['id'] <= 0:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.INVALID_ENERGY_CATEGORY_ID')
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energy_category_id = new_values['data']['energy_category']['id']
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if 'tariff_type' not in new_values['data'].keys() \
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or str.strip(new_values['data']['tariff_type']) not in ('block', 'timeofuse'):
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.INVALID_TARIFF_TYPE')
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tariff_type = str.strip(new_values['data']['tariff_type'])
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if new_values['data']['tariff_type'] == 'block':
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if new_values['data']['block'] is None:
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.INVALID_TARIFF_BLOCK_PRICING')
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elif new_values['data']['tariff_type'] == 'timeofuse':
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if new_values['data']['timeofuse'] is None:
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.INVALID_TARIFF_TIME_OF_USE_PRICING')
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if 'unit_of_price' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['unit_of_price'], str) or \
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len(str.strip(new_values['data']['unit_of_price'])) == 0:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.INVALID_UNIT_OF_PRICE')
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unit_of_price = str.strip(new_values['data']['unit_of_price'])
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timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6])
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if config.utc_offset[0] == '-':
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timezone_offset = -timezone_offset
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cnx = mysql.connector.connect(**config.myems_system_db)
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cursor = cnx.cursor()
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# check if the tariff exist
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query = (" SELECT name "
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" FROM tbl_tariffs "
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" WHERE id = %s ")
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cursor.execute(query, (id_,))
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cursor.fetchone()
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|
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if cursor.rowcount != 1:
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cursor.close()
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cnx.disconnect()
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raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
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description='API.TARIFF_NOT_FOUND')
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|
|
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cursor.execute(" SELECT name "
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" FROM tbl_tariffs "
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" WHERE name = %s AND id != %s ", (name, id_))
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if cursor.fetchone() is not None:
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cursor.close()
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|
cnx.disconnect()
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.TARIFF_NAME_IS_ALREADY_IN_USE')
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|
|
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valid_from = datetime.strptime(new_values['data']['valid_from'], '%Y-%m-%dT%H:%M:%S')
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valid_from = valid_from.replace(tzinfo=timezone.utc)
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valid_from -= timedelta(minutes=timezone_offset)
|
|
valid_through = datetime.strptime(new_values['data']['valid_through'], '%Y-%m-%dT%H:%M:%S')
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|
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 == 'block':
|
|
if 'block' not in new_values['data'].keys() or new_values['data']['block'] is None:
|
|
cursor.close()
|
|
cnx.disconnect()
|
|
raise falcon.HTTPError(falcon.HTTP_400,
|
|
title='API.BAD_REQUEST',
|
|
description='API.INVALID_TARIFF_BLOCK_PRICING')
|
|
else:
|
|
# remove all (possible) exist prices
|
|
cursor.execute(" DELETE FROM tbl_tariffs_blocks "
|
|
" WHERE tariff_id = %s ",
|
|
(id_,))
|
|
|
|
cursor.execute(" DELETE FROM tbl_tariffs_timeofuses "
|
|
" WHERE tariff_id = %s ",
|
|
(id_,))
|
|
cnx.commit()
|
|
|
|
for block in new_values['data']['block']:
|
|
cursor.execute(" INSERT INTO tbl_tariffs_blocks "
|
|
" (tariff_id, start_amount, end_amount, price) "
|
|
" VALUES (%s, %s, %s, %s) ",
|
|
(id_, block['start_amount'], block['end_amount'], block['price']))
|
|
cnx.commit()
|
|
elif tariff_type == 'timeofuse':
|
|
if 'timeofuse' not in new_values['data'].keys() or new_values['data']['timeofuse'] is None:
|
|
cursor.close()
|
|
cnx.disconnect()
|
|
raise falcon.HTTPError(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_blocks "
|
|
" WHERE tariff_id = %s ",
|
|
(id_,))
|
|
|
|
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.disconnect()
|
|
resp.status = falcon.HTTP_200
|
|
|
|
|