376 lines
17 KiB
Python
376 lines
17 KiB
Python
import falcon
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import json
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import mysql.connector
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import uuid
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from datetime import datetime, timezone, timedelta
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import config
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class RuleCollection:
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@staticmethod
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def __init__():
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"""Initializes RuleCollection"""
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pass
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@staticmethod
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def on_options(req, resp):
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resp.status = falcon.HTTP_200
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@staticmethod
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def on_get(req, resp):
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cnx = mysql.connector.connect(**config.myems_fdd_db)
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cursor = cnx.cursor(dictionary=True)
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query = (" SELECT id, name, uuid, "
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" category, fdd_code, priority, "
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" channel, expression, message_template, "
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" is_enabled, last_run_datetime_utc, next_run_datetime_utc "
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" FROM tbl_rules "
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" ORDER BY id ")
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cursor.execute(query)
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rows = cursor.fetchall()
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cursor.close()
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cnx.disconnect()
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result = list()
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if rows is not None and len(rows) > 0:
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for row in rows:
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last_run_datetime = None
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if row['last_run_datetime_utc'] is not None:
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last_run_datetime = row['last_run_datetime_utc'].replace(tzinfo=timezone.utc).timestamp() * 1000
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next_run_datetime = None
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if row['next_run_datetime_utc'] is not None:
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next_run_datetime = row['next_run_datetime_utc'].replace(tzinfo=timezone.utc).timestamp() * 1000
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meta_result = {"id": row['id'], "name": row['name'], "uuid": row['uuid'],
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"category": row['category'], "fdd_code": row['fdd_code'], "priority": row['priority'],
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"channel": row['channel'], "expression": row['expression'],
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"message_template": row['message_template'].replace("<br>", ""),
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"is_enabled": bool(row['is_enabled']),
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"last_run_datetime": last_run_datetime,
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"next_run_datetime": next_run_datetime,
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}
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result.append(meta_result)
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resp.body = json.dumps(result)
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@staticmethod
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def on_post(req, resp):
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"""Handles POST requests"""
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try:
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raw_json = req.stream.read().decode('utf-8')
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except Exception as ex:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.EXCEPTION', description=ex)
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new_values = json.loads(raw_json)
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if 'name' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['name'], str) or \
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len(str.strip(new_values['data']['name'])) == 0:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.INVALID_RULE_NAME')
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name = str.strip(new_values['data']['name'])
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if 'category' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['category'], str) or \
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len(str.strip(new_values['data']['category'])) == 0 or \
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str.strip(new_values['data']['category']) not in \
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('SYSTEM', 'REALTIME', 'SPACE', 'METER', 'TENANT', 'STORE', 'SHOPFLOOR', 'EQUIPMENT',
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'COMBINEDEQUIPMENT', 'VIRTUALMETER'):
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.INVALID_CATEGORY')
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category = str.strip(new_values['data']['category'])
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if 'fdd_code' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['fdd_code'], str) or \
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len(str.strip(new_values['data']['fdd_code'])) == 0:
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.INVALID_FDD_CODE')
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fdd_code = str.strip(new_values['data']['fdd_code'])
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if 'priority' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['priority'], str) or \
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len(str.strip(new_values['data']['priority'])) == 0 or \
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str.strip(new_values['data']['priority']) not in \
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('CRITICAL', 'HIGH', 'MEDIUM', 'LOW'):
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.INVALID_PRIORITY')
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priority = str.strip(new_values['data']['priority'])
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if 'channel' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['channel'], str) or \
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len(str.strip(new_values['data']['channel'])) == 0 or \
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str.strip(new_values['data']['channel']) not in ('WEB', 'EMAIL', 'SMS', 'WECHAT', 'CALL'):
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.INVALID_CHANNEL')
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channel = str.strip(new_values['data']['channel'])
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if 'expression' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['expression'], str) or \
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len(str.strip(new_values['data']['expression'])) == 0:
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.INVALID_EXPRESSION')
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expression = str.strip(new_values['data']['expression'])
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# validate expression in json
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try:
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json.loads(expression)
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except Exception as ex:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', description=ex)
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if 'message_template' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['message_template'], str) or \
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len(str.strip(new_values['data']['message_template'])) == 0:
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.INVALID_MESSAGE_TEMPLATE')
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message_template = str.strip(new_values['data']['message_template'])
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if 'is_enabled' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['is_enabled'], bool):
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.INVALID_IS_ENABLED')
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is_enabled = new_values['data']['is_enabled']
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cnx = mysql.connector.connect(**config.myems_fdd_db)
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cursor = cnx.cursor()
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cursor.execute(" SELECT name "
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" FROM tbl_rules "
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" WHERE name = %s ", (name,))
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if cursor.fetchone() is not None:
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cursor.close()
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cnx.disconnect()
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raise falcon.HTTPError(falcon.HTTP_404, title='API.BAD_REQUEST',
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description='API.RULE_NAME_IS_ALREADY_IN_USE')
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add_row = (" INSERT INTO tbl_rules "
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" (name, uuid, category, fdd_code, priority, "
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" channel, expression, message_template, is_enabled) "
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" VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s) ")
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cursor.execute(add_row, (name,
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str(uuid.uuid4()),
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category,
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fdd_code,
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priority,
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channel,
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expression,
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message_template,
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is_enabled))
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new_id = cursor.lastrowid
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cnx.commit()
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cursor.close()
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cnx.disconnect()
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resp.status = falcon.HTTP_201
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resp.location = '/rules/' + str(new_id)
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class RuleItem:
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@staticmethod
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def __init__():
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"""Initializes RuleItem"""
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pass
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@staticmethod
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def on_options(req, resp, id_):
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resp.status = falcon.HTTP_200
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@staticmethod
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def on_get(req, resp, id_):
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if not id_.isdigit() or int(id_) <= 0:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.INVALID_RULE_ID')
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cnx = mysql.connector.connect(**config.myems_fdd_db)
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cursor = cnx.cursor(dictionary=True)
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query = (" SELECT id, name, uuid, "
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" category, fdd_code, priority, "
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" channel, expression, message_template, "
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" is_enabled, last_run_datetime_utc, next_run_datetime_utc "
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" FROM tbl_rules "
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" WHERE id = %s ")
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cursor.execute(query, (id_,))
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row = cursor.fetchone()
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cursor.close()
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cnx.disconnect()
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if row is None:
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raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
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description='API.RULE_NOT_FOUND')
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last_run_datetime = None
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if row['last_run_datetime_utc'] is not None:
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last_run_datetime = row['last_run_datetime_utc'].replace(tzinfo=timezone.utc).timestamp() * 1000
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next_run_datetime = None
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if row['next_run_datetime_utc'] is not None:
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next_run_datetime = row['next_run_datetime_utc'].replace(tzinfo=timezone.utc).timestamp() * 1000
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result = {"id": row['id'], "name": row['name'], "uuid": row['uuid'],
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"category": row['category'], "fdd_code": row['fdd_code'], "priority": row['priority'],
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"channel": row['channel'], "expression": row['expression'],
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"message_template": row['message_template'].replace("<br>", ""),
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"is_enabled": bool(row['is_enabled']),
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"last_run_datetime": last_run_datetime,
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"next_run_datetime": next_run_datetime,
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}
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resp.body = json.dumps(result)
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@staticmethod
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def on_delete(req, resp, id_):
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if not id_.isdigit() or int(id_) <= 0:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.INVALID_RULE_ID')
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cnx = mysql.connector.connect(**config.myems_fdd_db)
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cursor = cnx.cursor()
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cursor.execute(" SELECT id "
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" FROM tbl_rules "
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" WHERE id = %s ",
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(id_,))
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if cursor.fetchone() is None:
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cursor.close()
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cnx.disconnect()
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raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
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description='API.RULE_NOT_FOUND')
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cursor.execute(" DELETE FROM tbl_rules WHERE id = %s ", (id_,))
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cnx.commit()
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cursor.close()
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cnx.disconnect()
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resp.status = falcon.HTTP_204
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@staticmethod
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def on_put(req, resp, id_):
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"""Handles PUT requests"""
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try:
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raw_json = req.stream.read().decode('utf-8')
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except Exception as ex:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.EXCEPTION', description=ex)
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if not id_.isdigit() or int(id_) <= 0:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.INVALID_RULE_ID')
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new_values = json.loads(raw_json)
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if 'name' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['name'], str) or \
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len(str.strip(new_values['data']['name'])) == 0:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.INVALID_RULE_NAME')
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name = str.strip(new_values['data']['name'])
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if 'category' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['category'], str) or \
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len(str.strip(new_values['data']['category'])) == 0 or \
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str.strip(new_values['data']['category']) not in \
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('SYSTEM', 'REALTIME', 'SPACE', 'METER', 'TENANT', 'STORE', 'SHOPFLOOR', 'EQUIPMENT',
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'COMBINEDEQUIPMENT', 'VIRTUALMETER'):
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.INVALID_CATEGORY')
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category = str.strip(new_values['data']['category'])
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if 'fdd_code' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['fdd_code'], str) or \
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len(str.strip(new_values['data']['fdd_code'])) == 0:
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.INVALID_FDD_CODE')
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fdd_code = str.strip(new_values['data']['fdd_code'])
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if 'priority' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['priority'], str) or \
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len(str.strip(new_values['data']['priority'])) == 0 or \
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str.strip(new_values['data']['priority']) not in \
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('CRITICAL', 'HIGH', 'MEDIUM', 'LOW'):
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.INVALID_PRIORITY')
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priority = str.strip(new_values['data']['priority'])
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if 'channel' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['channel'], str) or \
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len(str.strip(new_values['data']['channel'])) == 0 or \
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str.strip(new_values['data']['channel']) not in ('WEB', 'EMAIL', 'SMS', 'WECHAT', 'CALL'):
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.INVALID_CHANNEL')
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channel = str.strip(new_values['data']['channel'])
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if 'expression' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['expression'], str) or \
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len(str.strip(new_values['data']['expression'])) == 0:
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.INVALID_EXPRESSION')
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expression = str.strip(new_values['data']['expression'])
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# validate expression in json
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try:
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json.loads(expression)
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except Exception as ex:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', description=ex)
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if 'message_template' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['message_template'], str) or \
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len(str.strip(new_values['data']['message_template'])) == 0:
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.INVALID_MESSAGE_TEMPLATE')
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message_template = str.strip(new_values['data']['message_template'])
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if 'is_enabled' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['is_enabled'], bool):
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.INVALID_IS_ENABLED')
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is_enabled = new_values['data']['is_enabled']
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cnx = mysql.connector.connect(**config.myems_fdd_db)
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cursor = cnx.cursor()
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cursor.execute(" SELECT id "
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" FROM tbl_rules "
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" WHERE id = %s ", (id_,))
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if cursor.fetchone() is None:
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cursor.close()
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cnx.disconnect()
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raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
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description='API.RULE_NOT_FOUND')
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cursor.execute(" SELECT name "
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" FROM tbl_rules "
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" WHERE name = %s AND id != %s ", (name, id_))
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if cursor.fetchone() is not None:
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cursor.close()
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cnx.disconnect()
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raise falcon.HTTPError(falcon.HTTP_404, title='API.BAD_REQUEST',
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description='API.RULE_NAME_IS_ALREADY_IN_USE')
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update_row = (" UPDATE tbl_rules "
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" SET name = %s, category = %s, fdd_code = %s, priority = %s, "
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" channel = %s, expression = %s, message_template = %s, "
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" is_enabled = %s "
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" WHERE id = %s ")
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cursor.execute(update_row, (name,
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category,
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fdd_code,
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priority,
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channel,
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expression,
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message_template,
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is_enabled,
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id_,))
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cnx.commit()
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cursor.close()
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cnx.disconnect()
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resp.status = falcon.HTTP_200
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