| Conditions | 26 |
| Total Lines | 105 |
| Code Lines | 81 |
| Lines | 0 |
| Ratio | 0 % |
| Changes | 0 | ||
Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.
For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.
Commonly applied refactorings include:
If many parameters/temporary variables are present:
Complex classes like core.emailserver.EmailServerItem.on_put() 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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| 201 | @staticmethod |
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| 202 | def on_put(req, resp, id_): |
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| 203 | """Handles PUT requests""" |
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| 204 | try: |
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| 205 | raw_json = req.stream.read().decode('utf-8') |
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| 206 | except Exception as ex: |
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| 207 | raise falcon.HTTPError(falcon.HTTP_400, title='API.EXCEPTION', description=ex) |
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| 208 | |||
| 209 | if not id_.isdigit() or int(id_) <= 0: |
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| 210 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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| 211 | description='API.INVALID_EMAIL_SERVER_ID') |
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| 212 | |||
| 213 | new_values = json.loads(raw_json) |
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| 214 | if 'host' not in new_values['data'].keys() or \ |
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| 215 | not isinstance(new_values['data']['host'], str) or \ |
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| 216 | len(str.strip(new_values['data']['host'])) == 0: |
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| 217 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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| 218 | description='API.INVALID_EMAIL_SERVER_HOST') |
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| 219 | |||
| 220 | host = str.strip(new_values['data']['host']) |
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| 221 | |||
| 222 | if 'port' not in new_values['data'].keys() or \ |
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| 223 | not isinstance(new_values['data']['port'], int) or \ |
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| 224 | new_values['data']['port'] <= 0: |
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| 225 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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| 226 | description='API.INVALID_PORT') |
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| 227 | port = float(new_values['data']['port']) |
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| 228 | |||
| 229 | if 'requires_authentication' not in new_values['data'].keys() or \ |
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| 230 | not isinstance(new_values['data']['requires_authentication'], bool): |
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| 231 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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| 232 | description='API.INVALID_REQUIRES_AUTHENTICATION') |
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| 233 | requires_authentication = new_values['data']['requires_authentication'] |
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| 234 | |||
| 235 | if requires_authentication: |
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| 236 | if 'user_name' not in new_values['data'].keys() or \ |
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| 237 | not isinstance(new_values['data']['user_name'], str) or \ |
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| 238 | len(str.strip(new_values['data']['user_name'])) == 0: |
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| 239 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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| 240 | description='API.INVALID_USER_NAME') |
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| 241 | user_name = new_values['data']['user_name'] |
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| 242 | else: |
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| 243 | user_name = None |
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| 244 | |||
| 245 | if requires_authentication: |
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| 246 | if 'password' not in new_values['data'].keys() or \ |
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| 247 | not isinstance(new_values['data']['password'], str) or \ |
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| 248 | len(str.strip(new_values['data']['password'])) == 0: |
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| 249 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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| 250 | description='API.INVALID_PASSWORD') |
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| 251 | password = base64.b64encode(bytearray(new_values['data']['password'], 'utf-8')) |
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| 252 | else: |
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| 253 | password = None |
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| 254 | |||
| 255 | if 'from_addr' not in new_values['data'].keys() or \ |
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| 256 | not isinstance(new_values['data']['from_addr'], str) or \ |
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| 257 | len(str.strip(new_values['data']['from_addr'])) == 0: |
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| 258 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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| 259 | description='API.INVALID_FROM_ADDR') |
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| 260 | from_addr = new_values['data']['from_addr'] |
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| 261 | |||
| 262 | match = re.match(r'^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})$', from_addr) |
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| 263 | if match is None: |
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| 264 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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| 265 | description='API.INVALID_FROM_ADDR') |
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| 266 | |||
| 267 | cnx = mysql.connector.connect(**config.myems_fdd_db) |
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| 268 | cursor = cnx.cursor() |
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| 269 | |||
| 270 | cursor.execute(" SELECT id " |
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| 271 | " FROM tbl_email_servers " |
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| 272 | " WHERE id = %s ", |
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| 273 | (id_,)) |
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| 274 | if cursor.fetchone() is None: |
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| 275 | cursor.close() |
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| 276 | cnx.disconnect() |
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| 277 | raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND', |
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| 278 | description='API.EMAIL_SERVER_NOT_FOUND') |
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| 279 | |||
| 280 | cursor.execute(" SELECT host " |
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| 281 | " FROM tbl_email_servers " |
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| 282 | " WHERE host = %s AND id != %s ", (host, id_)) |
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| 283 | if cursor.fetchone() is not None: |
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| 284 | cursor.close() |
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| 285 | cnx.disconnect() |
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| 286 | raise falcon.HTTPError(falcon.HTTP_404, title='API.BAD_REQUEST', |
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| 287 | description='API.EMAIL_SERVER_HOST_IS_ALREADY_IN_USE') |
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| 288 | |||
| 289 | update_row = (" UPDATE tbl_email_servers " |
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| 290 | " SET host = %s, port = %s, requires_authentication = %s, " |
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| 291 | " user_name = %s, password = %s, from_addr = %s " |
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| 292 | " WHERE id = %s ") |
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| 293 | cursor.execute(update_row, (host, |
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| 294 | port, |
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| 295 | requires_authentication, |
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| 296 | user_name, |
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| 297 | password, |
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| 298 | from_addr, |
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| 299 | id_,)) |
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| 300 | cnx.commit() |
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| 301 | |||
| 302 | cursor.close() |
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| 303 | cnx.disconnect() |
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| 304 | |||
| 305 | resp.status = falcon.HTTP_200 |
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| 306 |