Conditions | 21 |
Total Lines | 87 |
Code Lines | 70 |
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 rule.RuleItem.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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179 | @staticmethod |
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180 | def on_put(req, resp, id_): |
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181 | """Handles PUT requests""" |
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182 | try: |
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183 | raw_json = req.stream.read().decode('utf-8') |
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184 | except Exception as ex: |
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185 | raise falcon.HTTPError(falcon.HTTP_400, title='API.EXCEPTION', description=ex) |
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186 | |||
187 | if not id_.isdigit() or int(id_) <= 0: |
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188 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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189 | description='API.INVALID_RULE_ID') |
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190 | |||
191 | new_values = json.loads(raw_json, encoding='utf-8') |
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192 | if 'name' not in new_values['data'].keys() or \ |
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193 | not isinstance(new_values['data']['name'], str) or \ |
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194 | len(str.strip(new_values['data']['name'])) == 0: |
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195 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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196 | description='API.INVALID_RULE_NAME') |
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197 | name = str.strip(new_values['data']['name']) |
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198 | |||
199 | if 'channel' not in new_values['data'].keys() or \ |
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200 | not isinstance(new_values['data']['channel'], str) or \ |
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201 | len(str.strip(new_values['data']['channel'])) == 0 or \ |
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202 | str.strip(new_values['data']['channel']) not in ('call', 'sms', 'email', 'wechat', 'web'): |
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203 | raise falcon.HTTPError(falcon.HTTP_400, |
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204 | title='API.BAD_REQUEST', |
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205 | description='API.INVALID_CHANNEL') |
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206 | channel = str.strip(new_values['data']['channel']) |
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207 | |||
208 | if 'expression' not in new_values['data'].keys() or \ |
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209 | not isinstance(new_values['data']['expression'], str) or \ |
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210 | len(str.strip(new_values['data']['expression'])) == 0: |
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211 | raise falcon.HTTPError(falcon.HTTP_400, |
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212 | title='API.BAD_REQUEST', |
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213 | description='API.INVALID_EXPRESSION') |
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214 | expression = str.strip(new_values['data']['expression']) |
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215 | |||
216 | if 'message' not in new_values['data'].keys() or \ |
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217 | not isinstance(new_values['data']['message'], str) or \ |
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218 | len(str.strip(new_values['data']['message'])) == 0: |
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219 | raise falcon.HTTPError(falcon.HTTP_400, |
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220 | title='API.BAD_REQUEST', |
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221 | description='API.INVALID_MESSAGE') |
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222 | message = str.strip(new_values['data']['message']) |
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223 | |||
224 | if 'is_enabled' not in new_values['data'].keys() or \ |
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225 | not isinstance(new_values['data']['is_enabled'], bool): |
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226 | raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', |
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227 | description='API.INVALID_IS_ENABLED') |
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228 | is_enabled = new_values['data']['is_enabled'] |
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229 | |||
230 | cnx = mysql.connector.connect(**config.myems_fdd_db) |
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231 | cursor = cnx.cursor() |
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232 | |||
233 | cursor.execute(" SELECT id " |
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234 | " FROM tbl_rules " |
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235 | " WHERE id = %s ", (id_,)) |
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236 | if cursor.fetchone() is None: |
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237 | cursor.close() |
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238 | cnx.disconnect() |
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239 | raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND', |
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240 | description='API.RULE_NOT_FOUND') |
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241 | |||
242 | cursor.execute(" SELECT name " |
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243 | " FROM tbl_rules " |
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244 | " WHERE name = %s AND id != %s ", (name, id_)) |
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245 | if cursor.fetchone() is not None: |
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246 | cursor.close() |
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247 | cnx.disconnect() |
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248 | raise falcon.HTTPError(falcon.HTTP_404, title='API.BAD_REQUEST', |
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249 | description='API.RULE_NAME_IS_ALREADY_IN_USE') |
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250 | |||
251 | update_row = (" UPDATE tbl_rules " |
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252 | " SET name = %s, channel = %s, expression = %s, message = %s, is_enabled = %s " |
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253 | " WHERE id = %s ") |
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254 | cursor.execute(update_row, (name, |
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255 | channel, |
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256 | expression, |
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257 | message, |
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258 | is_enabled, |
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259 | id_,)) |
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260 | cnx.commit() |
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261 | |||
262 | cursor.close() |
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263 | cnx.disconnect() |
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264 | |||
265 | resp.status = falcon.HTTP_200 |
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266 |