myems /
myems-api
| Total Complexity | 47 |
| Total Lines | 327 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like reports.metersubmetersbalance often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
| 1 | import falcon |
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| 2 | import simplejson as json |
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| 3 | import mysql.connector |
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| 4 | import config |
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| 5 | from datetime import datetime, timedelta, timezone |
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| 6 | from core import utilities |
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| 7 | from decimal import Decimal |
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| 8 | |||
| 9 | |||
| 10 | class Reporting: |
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| 11 | @staticmethod |
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| 12 | def __init__(): |
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| 13 | pass |
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| 14 | |||
| 15 | @staticmethod |
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| 16 | def on_options(req, resp): |
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| 17 | resp.status = falcon.HTTP_200 |
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| 18 | |||
| 19 | #################################################################################################################### |
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| 20 | # PROCEDURES |
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| 21 | # Step 1: valid parameters |
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| 22 | # Step 2: query the master meter and energy category |
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| 23 | # Step 3: query associated submeters |
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| 24 | # Step 4: query reporting period master meter energy consumption |
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| 25 | # Step 5: query reporting period submeters energy consumption |
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| 26 | # Step 6: calculate reporting period difference between master meter and submeters |
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| 27 | # Step 7: query submeter values as parameter data |
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| 28 | # Step 8: construct the report |
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| 29 | #################################################################################################################### |
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| 30 | @staticmethod |
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| 31 | def on_get(req, resp): |
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| 32 | print(req.params) |
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| 33 | meter_id = req.params.get('meterid') |
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| 34 | period_type = req.params.get('periodtype') |
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| 35 | reporting_period_start_datetime_local = req.params.get('reportingperiodstartdatetime') |
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| 36 | reporting_period_end_datetime_local = req.params.get('reportingperiodenddatetime') |
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| 37 | |||
| 38 | ################################################################################################################ |
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| 39 | # Step 1: valid parameters |
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| 40 | ################################################################################################################ |
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| 41 | if meter_id is None: |
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| 42 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', description='API.INVALID_METER_ID') |
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| 43 | else: |
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| 44 | meter_id = str.strip(meter_id) |
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| 45 | if not meter_id.isdigit() or int(meter_id) <= 0: |
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| 46 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', description='API.INVALID_METER_ID') |
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| 47 | |||
| 48 | if period_type is None: |
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| 49 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', description='API.INVALID_PERIOD_TYPE') |
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| 50 | else: |
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| 51 | period_type = str.strip(period_type) |
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| 52 | if period_type not in ['hourly', 'daily', 'monthly', 'yearly']: |
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| 53 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', description='API.INVALID_PERIOD_TYPE') |
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| 54 | |||
| 55 | timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6]) |
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| 56 | if config.utc_offset[0] == '-': |
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| 57 | timezone_offset = -timezone_offset |
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| 58 | |||
| 59 | if reporting_period_start_datetime_local is None: |
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| 60 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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| 61 | description="API.INVALID_REPORTING_PERIOD_START_DATETIME") |
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| 62 | else: |
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| 63 | reporting_period_start_datetime_local = str.strip(reporting_period_start_datetime_local) |
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| 64 | try: |
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| 65 | reporting_start_datetime_utc = datetime.strptime(reporting_period_start_datetime_local, |
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| 66 | '%Y-%m-%dT%H:%M:%S') |
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| 67 | except ValueError: |
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| 68 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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| 69 | description="API.INVALID_REPORTING_PERIOD_START_DATETIME") |
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| 70 | reporting_start_datetime_utc = reporting_start_datetime_utc.replace(tzinfo=timezone.utc) - \ |
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| 71 | timedelta(minutes=timezone_offset) |
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| 72 | |||
| 73 | if reporting_period_end_datetime_local is None: |
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| 74 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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| 75 | description="API.INVALID_REPORTING_PERIOD_END_DATETIME") |
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| 76 | else: |
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| 77 | reporting_period_end_datetime_local = str.strip(reporting_period_end_datetime_local) |
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| 78 | try: |
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| 79 | reporting_end_datetime_utc = datetime.strptime(reporting_period_end_datetime_local, |
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| 80 | '%Y-%m-%dT%H:%M:%S') |
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| 81 | except ValueError: |
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| 82 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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| 83 | description="API.INVALID_REPORTING_PERIOD_END_DATETIME") |
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| 84 | reporting_end_datetime_utc = reporting_end_datetime_utc.replace(tzinfo=timezone.utc) - \ |
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| 85 | timedelta(minutes=timezone_offset) |
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| 86 | |||
| 87 | if reporting_start_datetime_utc >= reporting_end_datetime_utc: |
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| 88 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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| 89 | description='API.INVALID_REPORTING_PERIOD_END_DATETIME') |
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| 90 | |||
| 91 | ################################################################################################################ |
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| 92 | # Step 2: query the meter and energy category |
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| 93 | ################################################################################################################ |
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| 94 | cnx_system = mysql.connector.connect(**config.myems_system_db) |
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| 95 | cursor_system = cnx_system.cursor() |
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| 96 | |||
| 97 | cnx_energy = mysql.connector.connect(**config.myems_energy_db) |
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| 98 | cursor_energy = cnx_energy.cursor() |
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| 99 | |||
| 100 | cursor_system.execute(" SELECT m.id, m.name, m.cost_center_id, m.energy_category_id, " |
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| 101 | " ec.name, ec.unit_of_measure " |
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| 102 | " FROM tbl_meters m, tbl_energy_categories ec " |
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| 103 | " WHERE m.id = %s AND m.energy_category_id = ec.id ", (meter_id,)) |
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| 104 | row_meter = cursor_system.fetchone() |
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| 105 | if row_meter is None: |
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| 106 | if cursor_system: |
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| 107 | cursor_system.close() |
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| 108 | if cnx_system: |
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| 109 | cnx_system.disconnect() |
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| 110 | |||
| 111 | if cursor_energy: |
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| 112 | cursor_energy.close() |
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| 113 | if cnx_energy: |
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| 114 | cnx_energy.disconnect() |
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| 115 | |||
| 116 | raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND', description='API.METER_NOT_FOUND') |
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| 117 | |||
| 118 | master_meter = dict() |
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| 119 | master_meter['id'] = row_meter[0] |
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| 120 | master_meter['name'] = row_meter[1] |
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| 121 | master_meter['cost_center_id'] = row_meter[2] |
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| 122 | master_meter['energy_category_id'] = row_meter[3] |
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| 123 | master_meter['energy_category_name'] = row_meter[4] |
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| 124 | master_meter['unit_of_measure'] = row_meter[5] |
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| 125 | |||
| 126 | ################################################################################################################ |
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| 127 | # Step 3: query associated submeters |
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| 128 | ################################################################################################################ |
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| 129 | submeter_list = list() |
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| 130 | submeter_id_set = set() |
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| 131 | |||
| 132 | cursor_system.execute(" SELECT id, name, energy_category_id " |
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| 133 | " FROM tbl_meters " |
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| 134 | " WHERE master_meter_id = %s ", |
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| 135 | (master_meter['id'],)) |
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| 136 | rows_meters = cursor_system.fetchall() |
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| 137 | |||
| 138 | if rows_meters is not None and len(rows_meters) > 0: |
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| 139 | for row in rows_meters: |
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| 140 | submeter_list.append({"id": row[0], |
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| 141 | "name": row[1], |
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| 142 | "energy_category_id": row[2]}) |
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| 143 | submeter_id_set.add(row[0]) |
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| 144 | |||
| 145 | ################################################################################################################ |
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| 146 | # Step 4: query reporting period master meter energy consumption |
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| 147 | ################################################################################################################ |
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| 148 | reporting = dict() |
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| 149 | reporting['master_meter_total_in_category'] = Decimal(0.0) |
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| 150 | reporting['submeters_total_in_category'] = Decimal(0.0) |
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| 151 | reporting['total_difference_in_category'] = Decimal(0.0) |
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| 152 | reporting['percentage_difference'] = Decimal(0.0) |
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| 153 | reporting['timestamps'] = list() |
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| 154 | reporting['master_meter_values'] = list() |
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| 155 | reporting['submeters_values'] = list() |
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| 156 | reporting['difference_values'] = list() |
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| 157 | |||
| 158 | parameters_data = dict() |
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| 159 | parameters_data['names'] = list() |
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| 160 | parameters_data['timestamps'] = list() |
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| 161 | parameters_data['values'] = list() |
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| 162 | |||
| 163 | query = (" SELECT start_datetime_utc, actual_value " |
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| 164 | " FROM tbl_meter_hourly " |
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| 165 | " WHERE meter_id = %s " |
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| 166 | " AND start_datetime_utc >= %s " |
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| 167 | " AND start_datetime_utc < %s " |
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| 168 | " ORDER BY start_datetime_utc ") |
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| 169 | cursor_energy.execute(query, (master_meter['id'], reporting_start_datetime_utc, reporting_end_datetime_utc)) |
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| 170 | rows_meter_hourly = cursor_energy.fetchall() |
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| 171 | |||
| 172 | rows_meter_periodically = utilities.aggregate_hourly_data_by_period(rows_meter_hourly, |
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| 173 | reporting_start_datetime_utc, |
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| 174 | reporting_end_datetime_utc, |
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| 175 | period_type) |
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| 176 | |||
| 177 | for row_meter_periodically in rows_meter_periodically: |
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| 178 | current_datetime_local = row_meter_periodically[0].replace(tzinfo=timezone.utc) + \ |
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| 179 | timedelta(minutes=timezone_offset) |
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| 180 | if period_type == 'hourly': |
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| 181 | current_datetime = current_datetime_local.strftime('%Y-%m-%dT%H:%M:%S') |
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| 182 | elif period_type == 'daily': |
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| 183 | current_datetime = current_datetime_local.strftime('%Y-%m-%d') |
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| 184 | elif period_type == 'monthly': |
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| 185 | current_datetime = current_datetime_local.strftime('%Y-%m') |
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| 186 | elif period_type == 'yearly': |
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| 187 | current_datetime = current_datetime_local.strftime('%Y') |
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| 188 | |||
| 189 | actual_value = Decimal(0.0) if row_meter_periodically[1] is None else row_meter_periodically[1] |
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| 190 | |||
| 191 | reporting['timestamps'].append(current_datetime) |
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|
introduced
by
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| 192 | reporting['master_meter_values'].append(actual_value) |
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| 193 | reporting['master_meter_total_in_category'] += actual_value |
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| 194 | |||
| 195 | # add master meter values to parameter data |
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| 196 | parameters_data['names'].append(master_meter['name']) |
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| 197 | parameters_data['timestamps'].append(reporting['timestamps']) |
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| 198 | parameters_data['values'].append(reporting['master_meter_values']) |
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| 199 | |||
| 200 | ################################################################################################################ |
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| 201 | # Step 5: query reporting period submeters energy consumption |
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| 202 | ################################################################################################################ |
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| 203 | query = (" SELECT start_datetime_utc, SUM(actual_value) " |
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| 204 | " FROM tbl_meter_hourly " |
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| 205 | " WHERE meter_id IN ( " + ', '.join(map(str, submeter_id_set)) + ") " |
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| 206 | " AND start_datetime_utc >= %s " |
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| 207 | " AND start_datetime_utc < %s " |
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| 208 | " GROUP BY start_datetime_utc " |
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| 209 | " ORDER BY start_datetime_utc ") |
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| 210 | cursor_energy.execute(query, (reporting_start_datetime_utc, reporting_end_datetime_utc)) |
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| 211 | rows_submeters_hourly = cursor_energy.fetchall() |
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| 212 | |||
| 213 | rows_submeters_periodically = utilities.aggregate_hourly_data_by_period(rows_submeters_hourly, |
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| 214 | reporting_start_datetime_utc, |
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| 215 | reporting_end_datetime_utc, |
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| 216 | period_type) |
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| 217 | |||
| 218 | for row_submeters_periodically in rows_submeters_periodically: |
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| 219 | current_datetime_local = row_submeters_periodically[0].replace(tzinfo=timezone.utc) + \ |
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| 220 | timedelta(minutes=timezone_offset) |
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| 221 | if period_type == 'hourly': |
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| 222 | current_datetime = current_datetime_local.strftime('%Y-%m-%dT%H:%M:%S') |
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| 223 | elif period_type == 'daily': |
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| 224 | current_datetime = current_datetime_local.strftime('%Y-%m-%d') |
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| 225 | elif period_type == 'monthly': |
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| 226 | current_datetime = current_datetime_local.strftime('%Y-%m') |
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| 227 | elif period_type == 'yearly': |
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| 228 | current_datetime = current_datetime_local.strftime('%Y') |
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| 229 | |||
| 230 | actual_value = Decimal(0.0) if row_submeters_periodically[1] is None else row_submeters_periodically[1] |
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| 231 | |||
| 232 | reporting['submeters_values'].append(actual_value) |
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| 233 | reporting['submeters_total_in_category'] += actual_value |
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| 234 | |||
| 235 | ################################################################################################################ |
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| 236 | # Step 6: calculate reporting period difference between master meter and submeters |
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| 237 | ################################################################################################################ |
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| 238 | for i in range(len(reporting['timestamps'])): |
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| 239 | reporting['difference_values'].append(reporting['master_meter_values'][i] - |
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| 240 | reporting['submeters_values'][i]) |
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| 241 | |||
| 242 | reporting['total_difference_in_category'] = \ |
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| 243 | reporting['master_meter_total_in_category'] - reporting['submeters_total_in_category'] |
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| 244 | |||
| 245 | reporting['percentage_difference'] = \ |
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| 246 | reporting['total_difference_in_category'] / reporting['master_meter_total_in_category'] \ |
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| 247 | if abs(reporting['master_meter_total_in_category']) > Decimal(0.0) else Decimal(0.0) |
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| 248 | |||
| 249 | ################################################################################################################ |
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| 250 | # Step 7: query submeter values as parameter data |
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| 251 | ################################################################################################################ |
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| 252 | for submeter in submeter_list: |
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| 253 | submeter_timestamps = list() |
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| 254 | submeter_values = list() |
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| 255 | |||
| 256 | query = (" SELECT start_datetime_utc, actual_value " |
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| 257 | " FROM tbl_meter_hourly " |
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| 258 | " WHERE meter_id = %s " |
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| 259 | " AND start_datetime_utc >= %s " |
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| 260 | " AND start_datetime_utc < %s " |
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| 261 | " ORDER BY start_datetime_utc ") |
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| 262 | cursor_energy.execute(query, (submeter['id'], reporting_start_datetime_utc, reporting_end_datetime_utc)) |
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| 263 | rows_meter_hourly = cursor_energy.fetchall() |
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| 264 | |||
| 265 | rows_meter_periodically = utilities.aggregate_hourly_data_by_period(rows_meter_hourly, |
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| 266 | reporting_start_datetime_utc, |
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| 267 | reporting_end_datetime_utc, |
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| 268 | period_type) |
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| 269 | |||
| 270 | for row_meter_periodically in rows_meter_periodically: |
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| 271 | current_datetime_local = row_meter_periodically[0].replace(tzinfo=timezone.utc) + \ |
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| 272 | timedelta(minutes=timezone_offset) |
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| 273 | if period_type == 'hourly': |
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| 274 | current_datetime = current_datetime_local.strftime('%Y-%m-%dT%H:%M:%S') |
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| 275 | elif period_type == 'daily': |
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| 276 | current_datetime = current_datetime_local.strftime('%Y-%m-%d') |
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| 277 | elif period_type == 'monthly': |
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| 278 | current_datetime = current_datetime_local.strftime('%Y-%m') |
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| 279 | elif period_type == 'yearly': |
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| 280 | current_datetime = current_datetime_local.strftime('%Y') |
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| 281 | |||
| 282 | actual_value = Decimal(0.0) if row_meter_periodically[1] is None else row_meter_periodically[1] |
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| 283 | |||
| 284 | submeter_timestamps.append(current_datetime) |
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| 285 | submeter_values.append(actual_value) |
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| 286 | |||
| 287 | parameters_data['names'].append(submeter['name']) |
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| 288 | parameters_data['timestamps'].append(submeter_timestamps) |
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| 289 | parameters_data['values'].append(submeter_values) |
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| 290 | |||
| 291 | ################################################################################################################ |
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| 292 | # Step 8: construct the report |
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| 293 | ################################################################################################################ |
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| 294 | if cursor_system: |
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| 295 | cursor_system.close() |
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| 296 | if cnx_system: |
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| 297 | cnx_system.disconnect() |
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| 298 | |||
| 299 | if cursor_energy: |
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| 300 | cursor_energy.close() |
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| 301 | if cnx_energy: |
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| 302 | cnx_energy.disconnect() |
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| 303 | |||
| 304 | result = { |
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| 305 | "meter": { |
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| 306 | "cost_center_id": master_meter['cost_center_id'], |
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| 307 | "energy_category_id": master_meter['energy_category_id'], |
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| 308 | "energy_category_name": master_meter['energy_category_name'], |
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| 309 | "unit_of_measure": master_meter['unit_of_measure'], |
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| 310 | }, |
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| 311 | "reporting_period": { |
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| 312 | "master_meter_consumption_in_category": reporting['master_meter_total_in_category'], |
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| 313 | "submeters_consumption_in_category": reporting['submeters_total_in_category'], |
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| 314 | "difference_in_category": reporting['total_difference_in_category'], |
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| 315 | "percentage_difference": reporting['percentage_difference'], |
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| 316 | "timestamps": reporting['timestamps'], |
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| 317 | "difference_values": reporting['difference_values'], |
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| 318 | }, |
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| 319 | "parameters": { |
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| 320 | "names": parameters_data['names'], |
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| 321 | "timestamps": parameters_data['timestamps'], |
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| 322 | "values": parameters_data['values'] |
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| 323 | }, |
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| 324 | } |
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| 325 | |||
| 326 | resp.body = json.dumps(result) |
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| 327 |
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