MyEMS /
myems
| Total Complexity | 151 |
| Total Lines | 880 |
| Duplicated Lines | 9.43 % |
| 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 core.datasource 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 uuid |
||
| 2 | from datetime import datetime, timezone, timedelta |
||
| 3 | import falcon |
||
| 4 | import mysql.connector |
||
| 5 | import simplejson as json |
||
| 6 | from core.useractivity import user_logger, admin_control |
||
| 7 | import config |
||
| 8 | from decimal import Decimal |
||
| 9 | |||
| 10 | |||
| 11 | class DataSourceCollection: |
||
| 12 | """ |
||
| 13 | Data Source Collection Resource |
||
| 14 | |||
| 15 | This class handles CRUD operations for data source collection. |
||
| 16 | It provides endpoints for listing all data sources and creating new data sources. |
||
| 17 | Data sources represent external systems that provide data to the energy management system. |
||
| 18 | """ |
||
| 19 | def __init__(self): |
||
| 20 | """Initialize DataSourceCollection""" |
||
| 21 | pass |
||
| 22 | |||
| 23 | @staticmethod |
||
| 24 | def on_options(req, resp): |
||
| 25 | """Handle OPTIONS requests for CORS preflight""" |
||
| 26 | _ = req |
||
| 27 | resp.status = falcon.HTTP_200 |
||
| 28 | |||
| 29 | @staticmethod |
||
| 30 | def on_get(req, resp): |
||
| 31 | admin_control(req) |
||
| 32 | search_query = req.get_param('q', default=None) |
||
| 33 | if search_query is not None: |
||
| 34 | search_query = search_query.strip() |
||
| 35 | else: |
||
| 36 | search_query = '' |
||
| 37 | cnx = mysql.connector.connect(**config.myems_system_db) |
||
| 38 | cursor = cnx.cursor() |
||
| 39 | |||
| 40 | query = (" SELECT id, name, uuid " |
||
| 41 | " FROM tbl_gateways ") |
||
| 42 | cursor.execute(query) |
||
| 43 | rows_gateways = cursor.fetchall() |
||
| 44 | gateway_dict = dict() |
||
| 45 | if rows_gateways is not None and len(rows_gateways) > 0: |
||
| 46 | for row in rows_gateways: |
||
| 47 | gateway_dict[row[0]] = {"id": row[0], |
||
| 48 | "name": row[1], |
||
| 49 | "uuid": row[2]} |
||
| 50 | |||
| 51 | query = (" SELECT id, name, uuid, gateway_id, protocol, connection, last_seen_datetime_utc, description " |
||
| 52 | " FROM tbl_data_sources " ) |
||
| 53 | params = [] |
||
| 54 | if search_query: |
||
| 55 | query += " WHERE name LIKE %s OR description LIKE %s " |
||
| 56 | params = [f'%{search_query}%', f'%{search_query}%'] |
||
| 57 | query += " ORDER BY id " |
||
| 58 | cursor.execute(query,params) |
||
| 59 | rows = cursor.fetchall() |
||
| 60 | cursor.close() |
||
| 61 | cnx.close() |
||
| 62 | |||
| 63 | timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6]) |
||
| 64 | if config.utc_offset[0] == '-': |
||
| 65 | timezone_offset = -timezone_offset |
||
| 66 | |||
| 67 | result = list() |
||
| 68 | if rows is not None and len(rows) > 0: |
||
| 69 | for row in rows: |
||
| 70 | if isinstance(row[6], datetime): |
||
| 71 | last_seen_datetime_local = row[6].replace(tzinfo=timezone.utc) + timedelta(minutes=timezone_offset) |
||
| 72 | last_seen_datetime = last_seen_datetime_local.isoformat()[0:19] |
||
| 73 | else: |
||
| 74 | last_seen_datetime = None |
||
| 75 | meta_result = {"id": row[0], |
||
| 76 | "name": row[1], |
||
| 77 | "uuid": row[2], |
||
| 78 | "gateway": gateway_dict.get(row[3]), |
||
| 79 | "protocol": row[4], |
||
| 80 | "connection": row[5], |
||
| 81 | "last_seen_datetime": last_seen_datetime, |
||
| 82 | "description": row[7] |
||
| 83 | } |
||
| 84 | |||
| 85 | result.append(meta_result) |
||
| 86 | |||
| 87 | resp.text = json.dumps(result) |
||
| 88 | |||
| 89 | @staticmethod |
||
| 90 | @user_logger |
||
| 91 | def on_post(req, resp): |
||
| 92 | """Handles POST requests""" |
||
| 93 | admin_control(req) |
||
| 94 | try: |
||
| 95 | raw_json = req.stream.read().decode('utf-8') |
||
| 96 | except Exception as ex: |
||
| 97 | print(ex) |
||
| 98 | raise falcon.HTTPError(status=falcon.HTTP_400, |
||
| 99 | title='API.BAD_REQUEST', |
||
| 100 | description='API.FAILED_TO_READ_REQUEST_STREAM') |
||
| 101 | |||
| 102 | new_values = json.loads(raw_json) |
||
| 103 | |||
| 104 | if 'name' not in new_values['data'].keys() or \ |
||
| 105 | not isinstance(new_values['data']['name'], str) or \ |
||
| 106 | len(str.strip(new_values['data']['name'])) == 0: |
||
| 107 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 108 | description='API.INVALID_DATA_SOURCE_NAME') |
||
| 109 | name = str.strip(new_values['data']['name']) |
||
| 110 | |||
| 111 | if 'gateway_id' not in new_values['data'].keys() or \ |
||
| 112 | not isinstance(new_values['data']['gateway_id'], int) or \ |
||
| 113 | new_values['data']['gateway_id'] <= 0: |
||
| 114 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 115 | description='API.INVALID_GATEWAY_ID') |
||
| 116 | gateway_id = new_values['data']['gateway_id'] |
||
| 117 | |||
| 118 | if 'protocol' not in new_values['data'].keys() or \ |
||
| 119 | not isinstance(new_values['data']['protocol'], str) or \ |
||
| 120 | len(str.strip(new_values['data']['protocol'])) == 0: |
||
| 121 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 122 | description='API.INVALID_DATA_SOURCE_PROTOCOL') |
||
| 123 | protocol = new_values['data']['protocol'] |
||
| 124 | |||
| 125 | cnx = mysql.connector.connect(**config.myems_system_db) |
||
| 126 | cursor = cnx.cursor() |
||
| 127 | |||
| 128 | query = (" SELECT id, name, code " |
||
| 129 | " FROM tbl_protocols ") |
||
| 130 | cursor.execute(query) |
||
| 131 | rows_protocols = cursor.fetchall() |
||
| 132 | |||
| 133 | procotol_dict = dict() |
||
| 134 | if rows_protocols is not None and len(rows_protocols) > 0: |
||
| 135 | for row in rows_protocols: |
||
| 136 | procotol_dict[row[2]] = {"id": row[0], |
||
| 137 | "name": row[1], |
||
| 138 | "code": row[2]} |
||
| 139 | |||
| 140 | if protocol not in procotol_dict.keys(): |
||
| 141 | cursor.close() |
||
| 142 | cnx.close() |
||
| 143 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 144 | description='API.INVALID_DATA_SOURCE_PROTOCOL') |
||
| 145 | |||
| 146 | if 'connection' not in new_values['data'].keys() or \ |
||
| 147 | not isinstance(new_values['data']['connection'], str) or \ |
||
| 148 | len(str.strip(new_values['data']['connection'])) == 0: |
||
| 149 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 150 | description='API.INVALID_CONNECTION') |
||
| 151 | connection = str.strip(new_values['data']['connection']) |
||
| 152 | |||
| 153 | if 'description' in new_values['data'].keys() and \ |
||
| 154 | new_values['data']['description'] is not None and \ |
||
| 155 | len(str(new_values['data']['description'])) > 0: |
||
| 156 | description = str.strip(new_values['data']['description']) |
||
| 157 | else: |
||
| 158 | description = None |
||
| 159 | |||
| 160 | cursor.execute(" SELECT name " |
||
| 161 | " FROM tbl_data_sources " |
||
| 162 | " WHERE name = %s ", (name,)) |
||
| 163 | if cursor.fetchone() is not None: |
||
| 164 | cursor.close() |
||
| 165 | cnx.close() |
||
| 166 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 167 | description='API.DATA_SOURCE_NAME_IS_ALREADY_IN_USE') |
||
| 168 | |||
| 169 | cursor.execute(" SELECT name " |
||
| 170 | " FROM tbl_gateways " |
||
| 171 | " WHERE id = %s ", (gateway_id,)) |
||
| 172 | if cursor.fetchone() is None: |
||
| 173 | cursor.close() |
||
| 174 | cnx.close() |
||
| 175 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 176 | description='API.INVALID_GATEWAY_ID') |
||
| 177 | |||
| 178 | add_values = (" INSERT INTO tbl_data_sources (name, uuid, gateway_id, protocol, connection, description) " |
||
| 179 | " VALUES (%s, %s, %s, %s, %s, %s) ") |
||
| 180 | cursor.execute(add_values, (name, |
||
| 181 | str(uuid.uuid4()), |
||
| 182 | gateway_id, |
||
| 183 | protocol, |
||
| 184 | connection, |
||
| 185 | description)) |
||
| 186 | new_id = cursor.lastrowid |
||
| 187 | cnx.commit() |
||
| 188 | cursor.close() |
||
| 189 | cnx.close() |
||
| 190 | |||
| 191 | resp.status = falcon.HTTP_201 |
||
| 192 | resp.location = '/datasources/' + str(new_id) |
||
| 193 | |||
| 194 | |||
| 195 | class DataSourceItem: |
||
| 196 | def __init__(self): |
||
| 197 | pass |
||
| 198 | |||
| 199 | @staticmethod |
||
| 200 | def on_options(req, resp, id_): |
||
| 201 | _ = req |
||
| 202 | resp.status = falcon.HTTP_200 |
||
| 203 | _ = id_ |
||
| 204 | |||
| 205 | @staticmethod |
||
| 206 | def on_get(req, resp, id_): |
||
| 207 | admin_control(req) |
||
| 208 | if not id_.isdigit() or int(id_) <= 0: |
||
| 209 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 210 | description='API.INVALID_DATA_SOURCE_ID') |
||
| 211 | |||
| 212 | cnx = mysql.connector.connect(**config.myems_system_db) |
||
| 213 | cursor = cnx.cursor() |
||
| 214 | |||
| 215 | query = (" SELECT id, name, uuid " |
||
| 216 | " FROM tbl_gateways ") |
||
| 217 | cursor.execute(query) |
||
| 218 | rows_gateways = cursor.fetchall() |
||
| 219 | gateway_dict = dict() |
||
| 220 | if rows_gateways is not None and len(rows_gateways) > 0: |
||
| 221 | for row in rows_gateways: |
||
| 222 | gateway_dict[row[0]] = {"id": row[0], |
||
| 223 | "name": row[1], |
||
| 224 | "uuid": row[2]} |
||
| 225 | |||
| 226 | query = (" SELECT id, name, uuid, gateway_id, protocol, connection, last_seen_datetime_utc, description " |
||
| 227 | " FROM tbl_data_sources " |
||
| 228 | " WHERE id = %s ") |
||
| 229 | cursor.execute(query, (id_,)) |
||
| 230 | row = cursor.fetchone() |
||
| 231 | cursor.close() |
||
| 232 | cnx.close() |
||
| 233 | if row is None: |
||
| 234 | raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND', |
||
| 235 | description='API.DATA_SOURCE_NOT_FOUND') |
||
| 236 | |||
| 237 | timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6]) |
||
| 238 | if config.utc_offset[0] == '-': |
||
| 239 | timezone_offset = -timezone_offset |
||
| 240 | |||
| 241 | if isinstance(row[6], datetime): |
||
| 242 | last_seen_datetime_local = row[6].replace(tzinfo=timezone.utc) + \ |
||
| 243 | timedelta(minutes=timezone_offset) |
||
| 244 | last_seen_datetime = last_seen_datetime_local.isoformat()[0:19] |
||
| 245 | else: |
||
| 246 | last_seen_datetime = None |
||
| 247 | |||
| 248 | result = {"id": row[0], |
||
| 249 | "name": row[1], |
||
| 250 | "uuid": row[2], |
||
| 251 | "gateway": gateway_dict.get(row[3]), |
||
| 252 | "protocol": row[4], |
||
| 253 | "connection": row[5], |
||
| 254 | "last_seen_datetime": last_seen_datetime, |
||
| 255 | "description": row[7] |
||
| 256 | } |
||
| 257 | |||
| 258 | resp.text = json.dumps(result) |
||
| 259 | |||
| 260 | @staticmethod |
||
| 261 | @user_logger |
||
| 262 | def on_delete(req, resp, id_): |
||
| 263 | admin_control(req) |
||
| 264 | if not id_.isdigit() or int(id_) <= 0: |
||
| 265 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 266 | description='API.INVALID_DATA_SOURCE_ID') |
||
| 267 | |||
| 268 | cnx = mysql.connector.connect(**config.myems_system_db) |
||
| 269 | cursor = cnx.cursor() |
||
| 270 | |||
| 271 | cursor.execute(" SELECT name " |
||
| 272 | " FROM tbl_data_sources " |
||
| 273 | " WHERE id = %s ", (id_,)) |
||
| 274 | if cursor.fetchone() is None: |
||
| 275 | cursor.close() |
||
| 276 | cnx.close() |
||
| 277 | raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND', |
||
| 278 | description='API.DATA_SOURCE_NOT_FOUND') |
||
| 279 | |||
| 280 | # check if this data source is being used by any meters |
||
| 281 | cursor.execute(" SELECT DISTINCT(m.name) " |
||
| 282 | " FROM tbl_meters m, tbl_meters_points mp, tbl_points p, tbl_data_sources ds " |
||
| 283 | " WHERE m.id = mp.meter_id AND mp.point_id = p.id AND p.data_source_id = ds.id " |
||
| 284 | " AND ds.id = %s " |
||
| 285 | " LIMIT 1 ", |
||
| 286 | (id_,)) |
||
| 287 | row_meter = cursor.fetchone() |
||
| 288 | if row_meter is not None: |
||
| 289 | cursor.close() |
||
| 290 | cnx.close() |
||
| 291 | raise falcon.HTTPError(status=falcon.HTTP_400, |
||
| 292 | title='API.BAD_REQUEST', |
||
| 293 | description='API.THIS_DATA_SOURCE_IS_BEING_USED_BY_A_METER') |
||
| 294 | # todo : check if this data source is being used by any other objects |
||
| 295 | cursor.execute(" DELETE FROM tbl_points WHERE data_source_id = %s ", (id_,)) |
||
| 296 | cursor.execute(" DELETE FROM tbl_data_sources WHERE id = %s ", (id_,)) |
||
| 297 | cnx.commit() |
||
| 298 | |||
| 299 | cursor.close() |
||
| 300 | cnx.close() |
||
| 301 | resp.status = falcon.HTTP_204 |
||
| 302 | |||
| 303 | @staticmethod |
||
| 304 | @user_logger |
||
| 305 | def on_put(req, resp, id_): |
||
| 306 | """Handles PUT requests""" |
||
| 307 | admin_control(req) |
||
| 308 | try: |
||
| 309 | raw_json = req.stream.read().decode('utf-8') |
||
| 310 | except Exception as ex: |
||
| 311 | print(str(ex)) |
||
| 312 | raise falcon.HTTPError(status=falcon.HTTP_400, |
||
| 313 | title='API.BAD_REQUEST', |
||
| 314 | description='API.FAILED_TO_READ_REQUEST_STREAM') |
||
| 315 | |||
| 316 | if not id_.isdigit() or int(id_) <= 0: |
||
| 317 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 318 | description='API.INVALID_DATA_SOURCE_ID') |
||
| 319 | |||
| 320 | new_values = json.loads(raw_json) |
||
| 321 | |||
| 322 | if 'name' not in new_values['data'].keys() or \ |
||
| 323 | not isinstance(new_values['data']['name'], str) or \ |
||
| 324 | len(str.strip(new_values['data']['name'])) == 0: |
||
| 325 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 326 | description='API.INVALID_DATA_SOURCE_NAME') |
||
| 327 | name = str.strip(new_values['data']['name']) |
||
| 328 | |||
| 329 | if 'gateway_id' not in new_values['data'].keys() or \ |
||
| 330 | not isinstance(new_values['data']['gateway_id'], int) or \ |
||
| 331 | new_values['data']['gateway_id'] <= 0: |
||
| 332 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 333 | description='API.INVALID_GATEWAY_ID') |
||
| 334 | gateway_id = new_values['data']['gateway_id'] |
||
| 335 | |||
| 336 | if 'protocol' not in new_values['data'].keys() or \ |
||
| 337 | not isinstance(new_values['data']['protocol'], str) or \ |
||
| 338 | len(str.strip(new_values['data']['protocol'])) == 0: |
||
| 339 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 340 | description='API.INVALID_DATA_SOURCE_PROTOCOL') |
||
| 341 | protocol = new_values['data']['protocol'] |
||
| 342 | |||
| 343 | cnx = mysql.connector.connect(**config.myems_system_db) |
||
| 344 | cursor = cnx.cursor() |
||
| 345 | |||
| 346 | query = (" SELECT id, name, code " |
||
| 347 | " FROM tbl_protocols ") |
||
| 348 | cursor.execute(query) |
||
| 349 | rows_protocols = cursor.fetchall() |
||
| 350 | |||
| 351 | procotol_dict = dict() |
||
| 352 | if rows_protocols is not None and len(rows_protocols) > 0: |
||
| 353 | for row in rows_protocols: |
||
| 354 | procotol_dict[row[2]] = {"id": row[0], |
||
| 355 | "name": row[1], |
||
| 356 | "code": row[2]} |
||
| 357 | |||
| 358 | if protocol not in procotol_dict.keys(): |
||
| 359 | cursor.close() |
||
| 360 | cnx.close() |
||
| 361 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 362 | description='API.INVALID_DATA_SOURCE_PROTOCOL') |
||
| 363 | |||
| 364 | if 'connection' not in new_values['data'].keys() or \ |
||
| 365 | not isinstance(new_values['data']['connection'], str) or \ |
||
| 366 | len(str.strip(new_values['data']['connection'])) == 0: |
||
| 367 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 368 | description='API.INVALID_CONNECTION') |
||
| 369 | connection = str.strip(new_values['data']['connection']) |
||
| 370 | |||
| 371 | if 'description' in new_values['data'].keys() and \ |
||
| 372 | new_values['data']['description'] is not None and \ |
||
| 373 | len(str(new_values['data']['description'])) > 0: |
||
| 374 | description = str.strip(new_values['data']['description']) |
||
| 375 | else: |
||
| 376 | description = None |
||
| 377 | |||
| 378 | cursor.execute(" SELECT name " |
||
| 379 | " FROM tbl_data_sources " |
||
| 380 | " WHERE id = %s ", (id_,)) |
||
| 381 | if cursor.fetchone() is None: |
||
| 382 | cursor.close() |
||
| 383 | cnx.close() |
||
| 384 | raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND', |
||
| 385 | description='API.DATA_SOURCE_NOT_FOUND') |
||
| 386 | |||
| 387 | cursor.execute(" SELECT name " |
||
| 388 | " FROM tbl_gateways " |
||
| 389 | " WHERE id = %s ", (gateway_id,)) |
||
| 390 | if cursor.fetchone() is None: |
||
| 391 | cursor.close() |
||
| 392 | cnx.close() |
||
| 393 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 394 | description='API.INVALID_GATEWAY_ID') |
||
| 395 | |||
| 396 | update_row = (" UPDATE tbl_data_sources " |
||
| 397 | " SET name = %s, gateway_id = %s, protocol = %s, connection = %s, description = %s " |
||
| 398 | " WHERE id = %s ") |
||
| 399 | cursor.execute(update_row, (name, |
||
| 400 | gateway_id, |
||
| 401 | protocol, |
||
| 402 | connection, |
||
| 403 | description, |
||
| 404 | id_,)) |
||
| 405 | cnx.commit() |
||
| 406 | |||
| 407 | cursor.close() |
||
| 408 | cnx.close() |
||
| 409 | |||
| 410 | resp.status = falcon.HTTP_200 |
||
| 411 | |||
| 412 | |||
| 413 | class DataSourcePointCollection: |
||
| 414 | def __init__(self): |
||
| 415 | pass |
||
| 416 | |||
| 417 | @staticmethod |
||
| 418 | def on_options(req, resp, id_): |
||
| 419 | _ = req |
||
| 420 | resp.status = falcon.HTTP_200 |
||
| 421 | _ = id_ |
||
| 422 | |||
| 423 | @staticmethod |
||
| 424 | def on_get(req, resp, id_): |
||
| 425 | admin_control(req) |
||
| 426 | if not id_.isdigit() or int(id_) <= 0: |
||
| 427 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 428 | description='API.INVALID_DATA_SOURCE_ID') |
||
| 429 | |||
| 430 | cnx_system_db = mysql.connector.connect(**config.myems_system_db) |
||
| 431 | cursor_system_db = cnx_system_db.cursor() |
||
| 432 | |||
| 433 | cursor_system_db.execute(" SELECT name " |
||
| 434 | " FROM tbl_data_sources " |
||
| 435 | " WHERE id = %s ", (id_,)) |
||
| 436 | if cursor_system_db.fetchone() is None: |
||
| 437 | cursor_system_db.close() |
||
| 438 | cnx_system_db.close() |
||
| 439 | raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND', |
||
| 440 | description='API.DATA_SOURCE_NOT_FOUND') |
||
| 441 | |||
| 442 | result = list() |
||
| 443 | # Get points of the data source |
||
| 444 | # NOTE: there is no uuid in tbl_points |
||
| 445 | query_point = (" SELECT id, name, object_type, " |
||
| 446 | " units, high_limit, low_limit, higher_limit, lower_limit, ratio, offset_constant, " |
||
| 447 | " is_trend, is_virtual, address, description, faults, definitions " |
||
| 448 | " FROM tbl_points " |
||
| 449 | " WHERE data_source_id = %s " |
||
| 450 | " ORDER BY id ") |
||
| 451 | cursor_system_db.execute(query_point, (id_,)) |
||
| 452 | rows_point = cursor_system_db.fetchall() |
||
| 453 | |||
| 454 | cnx_historical_db = mysql.connector.connect(**config.myems_historical_db) |
||
| 455 | cursor_historical_db = cnx_historical_db.cursor() |
||
| 456 | cursor_historical_db.execute(" SELECT point_id, actual_value " |
||
| 457 | " FROM tbl_analog_value_latest " |
||
| 458 | " WHERE utc_date_time >= DATE_SUB(UTC_TIMESTAMP(), INTERVAL 30 MINUTE)") |
||
| 459 | analog_values = cursor_historical_db.fetchall() |
||
| 460 | analog_value_dict = dict() |
||
| 461 | for v in analog_values: |
||
| 462 | analog_value_dict[v[0]] = v[1] |
||
| 463 | |||
| 464 | cursor_historical_db.execute(" SELECT point_id, actual_value " |
||
| 465 | " FROM tbl_digital_value_latest " |
||
| 466 | " WHERE utc_date_time >= DATE_SUB(UTC_TIMESTAMP(), INTERVAL 30 MINUTE)") |
||
| 467 | digital_values = cursor_historical_db.fetchall() |
||
| 468 | digital_value_dict = dict() |
||
| 469 | for v in digital_values: |
||
| 470 | digital_value_dict[v[0]] = v[1] |
||
| 471 | |||
| 472 | cursor_historical_db.execute(" SELECT point_id, actual_value " |
||
| 473 | " FROM tbl_energy_value_latest " |
||
| 474 | " WHERE utc_date_time >= DATE_SUB(UTC_TIMESTAMP(), INTERVAL 30 MINUTE)") |
||
| 475 | energy_values = cursor_historical_db.fetchall() |
||
| 476 | energy_value_dict = dict() |
||
| 477 | for v in energy_values: |
||
| 478 | energy_value_dict[v[0]] = v[1] |
||
| 479 | |||
| 480 | cursor_historical_db.execute(" SELECT point_id, actual_value " |
||
| 481 | " FROM tbl_text_value_latest " |
||
| 482 | " WHERE utc_date_time >= DATE_SUB(UTC_TIMESTAMP(), INTERVAL 30 MINUTE)") |
||
| 483 | text_values = cursor_historical_db.fetchall() |
||
| 484 | text_value_dict = dict() |
||
| 485 | for v in text_values: |
||
| 486 | text_value_dict[v[0]] = v[1] |
||
| 487 | |||
| 488 | if rows_point is not None and len(rows_point) > 0: |
||
| 489 | for row in rows_point: |
||
| 490 | if row[2] == 'ANALOG_VALUE': |
||
| 491 | latest_value = analog_value_dict.get(row[0], None) |
||
| 492 | latest_value = Decimal(latest_value) if latest_value is not None else None |
||
| 493 | elif row[2] == 'DIGITAL_VALUE': |
||
| 494 | latest_value = digital_value_dict.get(row[0], None) |
||
| 495 | latest_value = int(latest_value) if latest_value is not None else None |
||
| 496 | elif row[2] == 'ENERGY_VALUE': |
||
| 497 | latest_value = energy_value_dict.get(row[0], None) |
||
| 498 | latest_value = Decimal(latest_value) if latest_value is not None else None |
||
| 499 | elif row[2] == 'TEXT_VALUE': |
||
| 500 | latest_value = text_value_dict.get(row[0], None) |
||
| 501 | latest_value = str(latest_value) if latest_value is not None else None |
||
| 502 | |||
| 503 | meta_result = {"id": row[0], |
||
| 504 | "name": row[1], |
||
| 505 | "object_type": row[2], |
||
| 506 | "units": row[3], |
||
| 507 | "high_limit": row[4], |
||
| 508 | "low_limit": row[5], |
||
| 509 | "higher_limit": row[6], |
||
| 510 | "lower_limit": row[7], |
||
| 511 | "ratio": Decimal(row[8]), |
||
| 512 | "offset_constant": Decimal(row[9]), |
||
| 513 | "is_trend": bool(row[10]), |
||
| 514 | "is_virtual": bool(row[11]), |
||
| 515 | "address": row[12], |
||
| 516 | "description": row[13], |
||
| 517 | "faults": row[14], |
||
| 518 | "definitions": row[15], |
||
| 519 | "latest_value": latest_value, |
||
|
introduced
by
|
|||
| 520 | } |
||
| 521 | |||
| 522 | result.append(meta_result) |
||
| 523 | |||
| 524 | cursor_system_db.close() |
||
| 525 | cnx_system_db.close() |
||
| 526 | cursor_historical_db.close() |
||
| 527 | cnx_historical_db.close() |
||
| 528 | resp.text = json.dumps(result) |
||
| 529 | |||
| 530 | |||
| 531 | class DataSourceExport: |
||
| 532 | def __init__(self): |
||
| 533 | pass |
||
| 534 | |||
| 535 | @staticmethod |
||
| 536 | def on_options(req, resp, id_): |
||
| 537 | _ = req |
||
| 538 | resp.status = falcon.HTTP_200 |
||
| 539 | _ = id_ |
||
| 540 | |||
| 541 | @staticmethod |
||
| 542 | def on_get(req, resp, id_): |
||
| 543 | admin_control(req) |
||
| 544 | if not id_.isdigit() or int(id_) <= 0: |
||
| 545 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 546 | description='API.INVALID_DATA_SOURCE_ID') |
||
| 547 | |||
| 548 | cnx = mysql.connector.connect(**config.myems_system_db) |
||
| 549 | cursor = cnx.cursor() |
||
| 550 | |||
| 551 | query = (" SELECT id, name, uuid " |
||
| 552 | " FROM tbl_gateways ") |
||
| 553 | cursor.execute(query) |
||
| 554 | rows_gateways = cursor.fetchall() |
||
| 555 | gateway_dict = dict() |
||
| 556 | if rows_gateways is not None and len(rows_gateways) > 0: |
||
| 557 | for row in rows_gateways: |
||
| 558 | gateway_dict[row[0]] = {"id": row[0], |
||
| 559 | "name": row[1], |
||
| 560 | "uuid": row[2]} |
||
| 561 | |||
| 562 | query = (" SELECT id, name, uuid, gateway_id, protocol, connection, last_seen_datetime_utc, description " |
||
| 563 | " FROM tbl_data_sources " |
||
| 564 | " WHERE id = %s ") |
||
| 565 | cursor.execute(query, (id_,)) |
||
| 566 | row = cursor.fetchone() |
||
| 567 | if row is None: |
||
| 568 | raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND', |
||
| 569 | description='API.DATA_SOURCE_NOT_FOUND') |
||
| 570 | |||
| 571 | timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6]) |
||
| 572 | if config.utc_offset[0] == '-': |
||
| 573 | timezone_offset = -timezone_offset |
||
| 574 | |||
| 575 | if isinstance(row[6], datetime): |
||
| 576 | last_seen_datetime_local = row[6].replace(tzinfo=timezone.utc) + \ |
||
| 577 | timedelta(minutes=timezone_offset) |
||
| 578 | last_seen_datetime = last_seen_datetime_local.isoformat()[0:19] |
||
| 579 | else: |
||
| 580 | last_seen_datetime = None |
||
| 581 | |||
| 582 | result = {"name": row[1], |
||
| 583 | "uuid": row[2], |
||
| 584 | "gateway": gateway_dict.get(row[3]), |
||
| 585 | "protocol": row[4], |
||
| 586 | "connection": row[5], |
||
| 587 | "last_seen_datetime": last_seen_datetime, |
||
| 588 | "description": row[7], |
||
| 589 | "points": None |
||
| 590 | } |
||
| 591 | point_result = list() |
||
| 592 | # Get points of the data source |
||
| 593 | # NOTE: there is no uuid in tbl_points |
||
| 594 | query_point = (" SELECT id, name, object_type, " |
||
| 595 | " units, high_limit, low_limit, higher_limit, lower_limit, ratio, " |
||
| 596 | " is_trend, is_virtual, address, description, faults, definitions " |
||
| 597 | " FROM tbl_points " |
||
| 598 | " WHERE data_source_id = %s " |
||
| 599 | " ORDER BY id ") |
||
| 600 | cursor.execute(query_point, (id_,)) |
||
| 601 | rows_point = cursor.fetchall() |
||
| 602 | |||
| 603 | View Code Duplication | if rows_point is not None and len(rows_point) > 0: |
|
| 604 | for row in rows_point: |
||
| 605 | meta_result = {"id": row[0], |
||
| 606 | "name": row[1], |
||
| 607 | "object_type": row[2], |
||
| 608 | "units": row[3], |
||
| 609 | "high_limit": row[4], |
||
| 610 | "low_limit": row[5], |
||
| 611 | "higher_limit": row[6], |
||
| 612 | "lower_limit": row[7], |
||
| 613 | "ratio": Decimal(row[8]), |
||
| 614 | "is_trend": bool(row[9]), |
||
| 615 | "is_virtual": bool(row[10]), |
||
| 616 | "address": row[11], |
||
| 617 | "description": row[12], |
||
| 618 | "faults": row[13], |
||
| 619 | "definitions": row[14]} |
||
| 620 | point_result.append(meta_result) |
||
| 621 | result['points'] = point_result |
||
| 622 | cursor.close() |
||
| 623 | cnx.close() |
||
| 624 | |||
| 625 | resp.text = json.dumps(result) |
||
| 626 | |||
| 627 | |||
| 628 | class DataSourceImport: |
||
| 629 | def __init__(self): |
||
| 630 | pass |
||
| 631 | |||
| 632 | @staticmethod |
||
| 633 | def on_options(req, resp): |
||
| 634 | _ = req |
||
| 635 | resp.status = falcon.HTTP_200 |
||
| 636 | |||
| 637 | @staticmethod |
||
| 638 | @user_logger |
||
| 639 | def on_post(req, resp): |
||
| 640 | """Handles POST requests""" |
||
| 641 | admin_control(req) |
||
| 642 | try: |
||
| 643 | raw_json = req.stream.read().decode('utf-8') |
||
| 644 | except Exception as ex: |
||
| 645 | print(str(ex)) |
||
| 646 | raise falcon.HTTPError(status=falcon.HTTP_400, |
||
| 647 | title='API.BAD_REQUEST', |
||
| 648 | description='API.FAILED_TO_READ_REQUEST_STREAM') |
||
| 649 | |||
| 650 | new_values = json.loads(raw_json) |
||
| 651 | |||
| 652 | if 'name' not in new_values.keys() or \ |
||
| 653 | not isinstance(new_values['name'], str) or \ |
||
| 654 | len(str.strip(new_values['name'])) == 0: |
||
| 655 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 656 | description='API.INVALID_DATA_SOURCE_NAME') |
||
| 657 | name = str.strip(new_values['name']) |
||
| 658 | |||
| 659 | if 'gateway' not in new_values.keys() or \ |
||
| 660 | 'id' not in new_values['gateway'].keys() or \ |
||
| 661 | not isinstance(new_values['gateway']['id'], int) or \ |
||
| 662 | new_values['gateway']['id'] <= 0: |
||
| 663 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 664 | description='API.INVALID_GATEWAY_ID') |
||
| 665 | gateway_id = new_values['gateway']['id'] |
||
| 666 | |||
| 667 | cnx = mysql.connector.connect(**config.myems_system_db) |
||
| 668 | cursor = cnx.cursor() |
||
| 669 | |||
| 670 | query = (" SELECT id, name, code " |
||
| 671 | " FROM tbl_protocols ") |
||
| 672 | cursor.execute(query) |
||
| 673 | rows_protocols = cursor.fetchall() |
||
| 674 | procotol_dict = dict() |
||
| 675 | if rows_protocols is not None and len(rows_protocols) > 0: |
||
| 676 | for row in rows_protocols: |
||
| 677 | procotol_dict[row[2]] = {"id": row[0], |
||
| 678 | "name": row[1], |
||
| 679 | "code": row[2]} |
||
| 680 | |||
| 681 | if 'protocol' not in new_values.keys() \ |
||
| 682 | or new_values['protocol'] not in procotol_dict.keys(): |
||
| 683 | cursor.close() |
||
| 684 | cnx.close() |
||
| 685 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 686 | description='API.INVALID_DATA_SOURCE_PROTOCOL') |
||
| 687 | protocol = new_values['protocol'] |
||
| 688 | |||
| 689 | if 'connection' not in new_values.keys() or \ |
||
| 690 | not isinstance(new_values['connection'], str) or \ |
||
| 691 | len(str.strip(new_values['connection'])) == 0: |
||
| 692 | cursor.close() |
||
| 693 | cnx.close() |
||
| 694 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 695 | description='API.INVALID_CONNECTION') |
||
| 696 | connection = str.strip(new_values['connection']) |
||
| 697 | |||
| 698 | if 'description' in new_values.keys() and \ |
||
| 699 | new_values['description'] is not None and \ |
||
| 700 | len(str(new_values['description'])) > 0: |
||
| 701 | description = str.strip(new_values['description']) |
||
| 702 | else: |
||
| 703 | description = None |
||
| 704 | |||
| 705 | cursor.execute(" SELECT name " |
||
| 706 | " FROM tbl_data_sources " |
||
| 707 | " WHERE name = %s ", (name,)) |
||
| 708 | if cursor.fetchone() is not None: |
||
| 709 | cursor.close() |
||
| 710 | cnx.close() |
||
| 711 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 712 | description='API.DATA_SOURCE_NAME_IS_ALREADY_IN_USE') |
||
| 713 | |||
| 714 | cursor.execute(" SELECT name " |
||
| 715 | " FROM tbl_gateways " |
||
| 716 | " WHERE id = %s ", (gateway_id,)) |
||
| 717 | if cursor.fetchone() is None: |
||
| 718 | cursor.close() |
||
| 719 | cnx.close() |
||
| 720 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 721 | description='API.INVALID_GATEWAY_ID') |
||
| 722 | |||
| 723 | add_values = (" INSERT INTO tbl_data_sources (name, uuid, gateway_id, protocol, connection, description) " |
||
| 724 | " VALUES (%s, %s, %s, %s, %s, %s) ") |
||
| 725 | cursor.execute(add_values, (name, |
||
| 726 | str(uuid.uuid4()), |
||
| 727 | gateway_id, |
||
| 728 | protocol, |
||
| 729 | connection, |
||
| 730 | description)) |
||
| 731 | new_id = cursor.lastrowid |
||
| 732 | View Code Duplication | if new_values['points'] is not None and len(new_values['points']) > 0: |
|
| 733 | for point in new_values['points']: |
||
| 734 | # todo: validate point properties |
||
| 735 | add_value = (" INSERT INTO tbl_points (name, data_source_id, object_type, units, " |
||
| 736 | " high_limit, low_limit, higher_limit, lower_limit, ratio, " |
||
| 737 | " is_trend, is_virtual, address, description, faults, " |
||
| 738 | " definitions) " |
||
| 739 | " VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s) ") |
||
| 740 | cursor.execute(add_value, (point['name'], |
||
| 741 | new_id, |
||
| 742 | point['object_type'], |
||
| 743 | point['units'], |
||
| 744 | point['high_limit'], |
||
| 745 | point['low_limit'], |
||
| 746 | point['higher_limit'], |
||
| 747 | point['lower_limit'], |
||
| 748 | point['ratio'], |
||
| 749 | point['is_trend'], |
||
| 750 | point['is_virtual'], |
||
| 751 | point['address'], |
||
| 752 | point['description'], |
||
| 753 | point['faults'], |
||
| 754 | point['definitions'])) |
||
| 755 | cnx.commit() |
||
| 756 | cursor.close() |
||
| 757 | cnx.close() |
||
| 758 | |||
| 759 | resp.status = falcon.HTTP_201 |
||
| 760 | resp.location = '/datasources/' + str(new_id) |
||
| 761 | |||
| 762 | |||
| 763 | class DataSourceClone: |
||
| 764 | def __init__(self): |
||
| 765 | pass |
||
| 766 | |||
| 767 | @staticmethod |
||
| 768 | def on_options(req, resp, id_): |
||
| 769 | _ = req |
||
| 770 | resp.status = falcon.HTTP_200 |
||
| 771 | _ = id_ |
||
| 772 | |||
| 773 | @staticmethod |
||
| 774 | @user_logger |
||
| 775 | def on_post(req, resp, id_): |
||
| 776 | """Handles POST requests""" |
||
| 777 | admin_control(req) |
||
| 778 | if not id_.isdigit() or int(id_) <= 0: |
||
| 779 | raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST', |
||
| 780 | description='API.INVALID_DATA_SOURCE_ID') |
||
| 781 | |||
| 782 | cnx = mysql.connector.connect(**config.myems_system_db) |
||
| 783 | cursor = cnx.cursor() |
||
| 784 | |||
| 785 | query = (" SELECT id, name, uuid, gateway_id, protocol, connection, description " |
||
| 786 | " FROM tbl_data_sources " |
||
| 787 | " WHERE id = %s ") |
||
| 788 | cursor.execute(query, (id_,)) |
||
| 789 | row = cursor.fetchone() |
||
| 790 | if row is None: |
||
| 791 | cursor.close() |
||
| 792 | cnx.close() |
||
| 793 | raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND', |
||
| 794 | description='API.DATA_SOURCE_NOT_FOUND') |
||
| 795 | |||
| 796 | meta_result = {"id": row[0], |
||
| 797 | "name": row[1], |
||
| 798 | "uuid": row[2], |
||
| 799 | "gateway_id": row[3], |
||
| 800 | "protocol": row[4], |
||
| 801 | "connection": row[5], |
||
| 802 | "description": row[6], |
||
| 803 | "points": None |
||
| 804 | } |
||
| 805 | point_result = list() |
||
| 806 | # Get points of the data source |
||
| 807 | # NOTE: there is no uuid in tbl_points |
||
| 808 | query_point = (" SELECT id, name, object_type, " |
||
| 809 | " units, high_limit, low_limit, higher_limit, lower_limit, ratio, " |
||
| 810 | " is_trend, is_virtual, address, description, faults, definitions " |
||
| 811 | " FROM tbl_points " |
||
| 812 | " WHERE data_source_id = %s " |
||
| 813 | " ORDER BY id ") |
||
| 814 | cursor.execute(query_point, (id_,)) |
||
| 815 | rows_point = cursor.fetchall() |
||
| 816 | |||
| 817 | View Code Duplication | if rows_point is not None and len(rows_point) > 0: |
|
| 818 | for row in rows_point: |
||
| 819 | result = {"id": row[0], |
||
| 820 | "name": row[1], |
||
| 821 | "object_type": row[2], |
||
| 822 | "units": row[3], |
||
| 823 | "high_limit": row[4], |
||
| 824 | "low_limit": row[5], |
||
| 825 | "higher_limit": row[6], |
||
| 826 | "lower_limit": row[7], |
||
| 827 | "ratio": Decimal(row[8]), |
||
| 828 | "is_trend": bool(row[9]), |
||
| 829 | "is_virtual": bool(row[10]), |
||
| 830 | "address": row[11], |
||
| 831 | "description": row[12], |
||
| 832 | "faults": row[13], |
||
| 833 | "definitions": row[14]} |
||
| 834 | point_result.append(result) |
||
| 835 | meta_result['points'] = point_result |
||
| 836 | |||
| 837 | timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6]) |
||
| 838 | if config.utc_offset[0] == '-': |
||
| 839 | timezone_offset = -timezone_offset |
||
| 840 | new_name = str.strip(meta_result['name']) + \ |
||
| 841 | (datetime.utcnow() + timedelta(minutes=timezone_offset)).isoformat(sep='-', timespec='seconds') |
||
| 842 | |||
| 843 | add_values = (" INSERT INTO tbl_data_sources (name, uuid, gateway_id, protocol, connection, description) " |
||
| 844 | " VALUES (%s, %s, %s, %s, %s, %s) ") |
||
| 845 | cursor.execute(add_values, (new_name, |
||
| 846 | str(uuid.uuid4()), |
||
| 847 | meta_result['gateway_id'], |
||
| 848 | meta_result['protocol'], |
||
| 849 | meta_result['connection'], |
||
| 850 | meta_result['description'])) |
||
| 851 | new_id = cursor.lastrowid |
||
| 852 | View Code Duplication | if meta_result['points'] is not None: |
|
| 853 | for point in meta_result['points']: |
||
| 854 | add_value = (" INSERT INTO tbl_points (name, data_source_id, object_type, units, " |
||
| 855 | " high_limit, low_limit, higher_limit, lower_limit, ratio, " |
||
| 856 | " is_trend, is_virtual, address, description, faults, " |
||
| 857 | " definitions) " |
||
| 858 | " VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s) ") |
||
| 859 | cursor.execute(add_value, (point['name'], |
||
| 860 | new_id, |
||
| 861 | point['object_type'], |
||
| 862 | point['units'], |
||
| 863 | point['high_limit'], |
||
| 864 | point['low_limit'], |
||
| 865 | point['higher_limit'], |
||
| 866 | point['lower_limit'], |
||
| 867 | point['ratio'], |
||
| 868 | point['is_trend'], |
||
| 869 | point['is_virtual'], |
||
| 870 | point['address'], |
||
| 871 | point['description'], |
||
| 872 | point['faults'], |
||
| 873 | point['definitions'])) |
||
| 874 | cnx.commit() |
||
| 875 | cursor.close() |
||
| 876 | cnx.close() |
||
| 877 | |||
| 878 | resp.status = falcon.HTTP_201 |
||
| 879 | resp.location = '/datasources/' + str(new_id) |
||
| 880 |
Loading history...
