| Total Complexity | 43 |
| Total Lines | 242 |
| Duplicated Lines | 95.45 % |
| Changes | 0 | ||
Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like reports.meterbatch 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 |
||
| 2 | import simplejson as json |
||
| 3 | import mysql.connector |
||
| 4 | import config |
||
| 5 | from anytree import Node, AnyNode, LevelOrderIter |
||
| 6 | from datetime import datetime, timedelta, timezone |
||
| 7 | from decimal import Decimal |
||
| 8 | import excelexporters.meterbatch |
||
| 9 | |||
| 10 | |||
| 11 | View Code Duplication | class Reporting: |
|
|
|
|||
| 12 | @staticmethod |
||
| 13 | def __init__(): |
||
| 14 | pass |
||
| 15 | |||
| 16 | @staticmethod |
||
| 17 | def on_options(req, resp): |
||
| 18 | resp.status = falcon.HTTP_200 |
||
| 19 | |||
| 20 | #################################################################################################################### |
||
| 21 | # PROCEDURES |
||
| 22 | # Step 1: valid parameters |
||
| 23 | # Step 2: build a space tree |
||
| 24 | # Step 3: query all meters in the space tree |
||
| 25 | # Step 4: query energy categories |
||
| 26 | # Step 5: query reporting period energy input |
||
| 27 | # Step 6: construct the report |
||
| 28 | #################################################################################################################### |
||
| 29 | @staticmethod |
||
| 30 | def on_get(req, resp): |
||
| 31 | print(req.params) |
||
| 32 | space_id = req.params.get('spaceid') |
||
| 33 | reporting_period_start_datetime_local = req.params.get('reportingperiodstartdatetime') |
||
| 34 | reporting_period_end_datetime_local = req.params.get('reportingperiodenddatetime') |
||
| 35 | |||
| 36 | ################################################################################################################ |
||
| 37 | # Step 1: valid parameters |
||
| 38 | ################################################################################################################ |
||
| 39 | if space_id is None: |
||
| 40 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', description='API.INVALID_SPACE_ID') |
||
| 41 | else: |
||
| 42 | space_id = str.strip(space_id) |
||
| 43 | if not space_id.isdigit() or int(space_id) <= 0: |
||
| 44 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', description='API.INVALID_SPACE_ID') |
||
| 45 | else: |
||
| 46 | space_id = int(space_id) |
||
| 47 | |||
| 48 | timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6]) |
||
| 49 | if config.utc_offset[0] == '-': |
||
| 50 | timezone_offset = -timezone_offset |
||
| 51 | |||
| 52 | if reporting_period_start_datetime_local is None: |
||
| 53 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 54 | description="API.INVALID_REPORTING_PERIOD_START_DATETIME") |
||
| 55 | else: |
||
| 56 | reporting_period_start_datetime_local = str.strip(reporting_period_start_datetime_local) |
||
| 57 | try: |
||
| 58 | reporting_start_datetime_utc = datetime.strptime(reporting_period_start_datetime_local, |
||
| 59 | '%Y-%m-%dT%H:%M:%S') |
||
| 60 | except ValueError: |
||
| 61 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 62 | description="API.INVALID_REPORTING_PERIOD_START_DATETIME") |
||
| 63 | reporting_start_datetime_utc = reporting_start_datetime_utc.replace(tzinfo=timezone.utc) - \ |
||
| 64 | timedelta(minutes=timezone_offset) |
||
| 65 | |||
| 66 | if reporting_period_end_datetime_local is None: |
||
| 67 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 68 | description="API.INVALID_REPORTING_PERIOD_END_DATETIME") |
||
| 69 | else: |
||
| 70 | reporting_period_end_datetime_local = str.strip(reporting_period_end_datetime_local) |
||
| 71 | try: |
||
| 72 | reporting_end_datetime_utc = datetime.strptime(reporting_period_end_datetime_local, |
||
| 73 | '%Y-%m-%dT%H:%M:%S') |
||
| 74 | except ValueError: |
||
| 75 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 76 | description="API.INVALID_REPORTING_PERIOD_END_DATETIME") |
||
| 77 | reporting_end_datetime_utc = reporting_end_datetime_utc.replace(tzinfo=timezone.utc) - \ |
||
| 78 | timedelta(minutes=timezone_offset) |
||
| 79 | |||
| 80 | if reporting_start_datetime_utc >= reporting_end_datetime_utc: |
||
| 81 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 82 | description='API.INVALID_REPORTING_PERIOD_END_DATETIME') |
||
| 83 | |||
| 84 | cnx_system_db = mysql.connector.connect(**config.myems_system_db) |
||
| 85 | cursor_system_db = cnx_system_db.cursor(dictionary=True) |
||
| 86 | |||
| 87 | cursor_system_db.execute(" SELECT name " |
||
| 88 | " FROM tbl_spaces " |
||
| 89 | " WHERE id = %s ", (space_id,)) |
||
| 90 | row = cursor_system_db.fetchone() |
||
| 91 | |||
| 92 | if row is None: |
||
| 93 | if cursor_system_db: |
||
| 94 | cursor_system_db.close() |
||
| 95 | if cnx_system_db: |
||
| 96 | cnx_system_db.disconnect() |
||
| 97 | raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND', |
||
| 98 | description='API.SPACE_NOT_FOUND') |
||
| 99 | else: |
||
| 100 | space_name = row['name'] |
||
| 101 | |||
| 102 | ################################################################################################################ |
||
| 103 | # Step 2: build a space tree |
||
| 104 | ################################################################################################################ |
||
| 105 | |||
| 106 | query = (" SELECT id, name, parent_space_id " |
||
| 107 | " FROM tbl_spaces " |
||
| 108 | " ORDER BY id ") |
||
| 109 | cursor_system_db.execute(query) |
||
| 110 | rows_spaces = cursor_system_db.fetchall() |
||
| 111 | node_dict = dict() |
||
| 112 | if rows_spaces is not None and len(rows_spaces) > 0: |
||
| 113 | for row in rows_spaces: |
||
| 114 | parent_node = node_dict[row['parent_space_id']] if row['parent_space_id'] is not None else None |
||
| 115 | node_dict[row['id']] = AnyNode(id=row['id'], parent=parent_node, name=row['name']) |
||
| 116 | |||
| 117 | ################################################################################################################ |
||
| 118 | # Step 3: query all meters in the space tree |
||
| 119 | ################################################################################################################ |
||
| 120 | meter_dict = dict() |
||
| 121 | space_dict = dict() |
||
| 122 | |||
| 123 | for node in LevelOrderIter(node_dict[space_id]): |
||
| 124 | space_dict[node.id] = node.name |
||
| 125 | |||
| 126 | cursor_system_db.execute(" SELECT m.id, m.name AS meter_name, s.name AS space_name, " |
||
| 127 | " cc.name AS cost_center_name, m.description " |
||
| 128 | " FROM tbl_spaces s, tbl_spaces_meters sm, " |
||
| 129 | " tbl_meters m, tbl_cost_centers cc " |
||
| 130 | " WHERE s.id IN ( " + ', '.join(map(str, space_dict.keys())) + ") " |
||
| 131 | " AND sm.space_id = s.id AND sm.meter_id = m.id " |
||
| 132 | " AND m.cost_center_id = cc.id ", ) |
||
| 133 | rows_meters = cursor_system_db.fetchall() |
||
| 134 | if rows_meters is not None and len(rows_meters) > 0: |
||
| 135 | for row in rows_meters: |
||
| 136 | meter_dict[row['id']] = {"meter_name": row['meter_name'], |
||
| 137 | "space_name": row['space_name'], |
||
| 138 | "cost_center_name": row['cost_center_name'], |
||
| 139 | "description": row['description'], |
||
| 140 | "values": list()} |
||
| 141 | |||
| 142 | ################################################################################################################ |
||
| 143 | # Step 4: query energy categories |
||
| 144 | ################################################################################################################ |
||
| 145 | cnx_energy_db = mysql.connector.connect(**config.myems_energy_db) |
||
| 146 | cursor_energy_db = cnx_energy_db.cursor() |
||
| 147 | |||
| 148 | # query energy categories in reporting period |
||
| 149 | energy_category_set = set() |
||
| 150 | cursor_energy_db.execute(" SELECT DISTINCT(energy_category_id) " |
||
| 151 | " FROM tbl_meter_input_category_hourly " |
||
| 152 | " WHERE start_datetime_utc >= %s AND start_datetime_utc < %s ", |
||
| 153 | (reporting_start_datetime_utc, reporting_end_datetime_utc)) |
||
| 154 | rows_energy_categories = cursor_energy_db.fetchall() |
||
| 155 | if rows_energy_categories is not None or len(rows_energy_categories) > 0: |
||
| 156 | for row_energy_category in rows_energy_categories: |
||
| 157 | energy_category_set.add(row_energy_category[0]) |
||
| 158 | |||
| 159 | # query all energy categories |
||
| 160 | cursor_system_db.execute(" SELECT id, name, unit_of_measure " |
||
| 161 | " FROM tbl_energy_categories " |
||
| 162 | " ORDER BY id ", ) |
||
| 163 | rows_energy_categories = cursor_system_db.fetchall() |
||
| 164 | if rows_energy_categories is None or len(rows_energy_categories) == 0: |
||
| 165 | if cursor_system_db: |
||
| 166 | cursor_system_db.close() |
||
| 167 | if cnx_system_db: |
||
| 168 | cnx_system_db.disconnect() |
||
| 169 | |||
| 170 | if cursor_energy_db: |
||
| 171 | cursor_energy_db.close() |
||
| 172 | if cnx_energy_db: |
||
| 173 | cnx_energy_db.disconnect() |
||
| 174 | |||
| 175 | raise falcon.HTTPError(falcon.HTTP_404, |
||
| 176 | title='API.NOT_FOUND', |
||
| 177 | description='API.ENERGY_CATEGORY_NOT_FOUND') |
||
| 178 | energy_category_list = list() |
||
| 179 | for row_energy_category in rows_energy_categories: |
||
| 180 | if row_energy_category['id'] in energy_category_set: |
||
| 181 | energy_category_list.append({"id": row_energy_category['id'], |
||
| 182 | "name": row_energy_category['name'], |
||
| 183 | "unit_of_measure": row_energy_category['unit_of_measure']}) |
||
| 184 | |||
| 185 | ################################################################################################################ |
||
| 186 | # Step 5: query reporting period energy input |
||
| 187 | ################################################################################################################ |
||
| 188 | for meter_id in meter_dict: |
||
| 189 | |||
| 190 | cursor_energy_db.execute(" SELECT energy_category_id, SUM(actual_value) " |
||
| 191 | " FROM tbl_meter_input_category_hourly " |
||
| 192 | " WHERE meter_id = %s " |
||
| 193 | " AND start_datetime_utc >= %s " |
||
| 194 | " AND start_datetime_utc < %s " |
||
| 195 | " GROUP BY energy_category_id ", |
||
| 196 | (meter_id, |
||
| 197 | reporting_start_datetime_utc, |
||
| 198 | reporting_end_datetime_utc)) |
||
| 199 | rows_meter_energy = cursor_energy_db.fetchall() |
||
| 200 | for energy_category in energy_category_list: |
||
| 201 | subtotal = Decimal(0.0) |
||
| 202 | for row_meter_energy in rows_meter_energy: |
||
| 203 | if energy_category['id'] == row_meter_energy[0]: |
||
| 204 | subtotal = row_meter_energy[1] |
||
| 205 | break |
||
| 206 | meter_dict[meter_id]['values'].append(subtotal) |
||
| 207 | |||
| 208 | if cursor_system_db: |
||
| 209 | cursor_system_db.close() |
||
| 210 | if cnx_system_db: |
||
| 211 | cnx_system_db.disconnect() |
||
| 212 | |||
| 213 | if cursor_energy_db: |
||
| 214 | cursor_energy_db.close() |
||
| 215 | if cnx_energy_db: |
||
| 216 | cnx_energy_db.disconnect() |
||
| 217 | |||
| 218 | ################################################################################################################ |
||
| 219 | # Step 6: construct the report |
||
| 220 | ################################################################################################################ |
||
| 221 | meter_list = list() |
||
| 222 | for meter_id, meter in meter_dict.items(): |
||
| 223 | meter_list.append({ |
||
| 224 | "id": meter_id, |
||
| 225 | "meter_name": meter['meter_name'], |
||
| 226 | "space_name": meter['space_name'], |
||
| 227 | "cost_center_name": meter['cost_center_name'], |
||
| 228 | "description": meter['description'], |
||
| 229 | "values": meter['values'], |
||
| 230 | }) |
||
| 231 | |||
| 232 | result = {'meters': meter_list, |
||
| 233 | 'energycategories': energy_category_list} |
||
| 234 | |||
| 235 | # export result to Excel file and then encode the file to base64 string |
||
| 236 | result['excel_bytes_base64'] = \ |
||
| 237 | excelexporters.meterbatch.export(result, |
||
| 238 | space_name, |
||
| 239 | reporting_period_start_datetime_local, |
||
| 240 | reporting_period_end_datetime_local) |
||
| 241 | resp.body = json.dumps(result) |
||
| 242 |