297 lines
11 KiB
Python
297 lines
11 KiB
Python
import falcon
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import simplejson as json
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import mysql.connector
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import config
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import uuid
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from core.useractivity import user_logger, access_control
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class DistributionSystemCollection:
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@staticmethod
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def __init__():
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"""Initializes DistributionSystemCollection"""
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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_system_db)
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cursor = cnx.cursor()
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query = (" SELECT id, name, uuid, "
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" svg, description "
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" FROM tbl_distribution_systems "
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" ORDER BY id ")
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cursor.execute(query)
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rows_distribution_systems = cursor.fetchall()
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result = list()
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if rows_distribution_systems is not None and len(rows_distribution_systems) > 0:
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for row in rows_distribution_systems:
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meta_result = {"id": row[0],
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"name": row[1],
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"uuid": row[2],
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"svg": row[3],
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"description": row[4]}
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result.append(meta_result)
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cursor.close()
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cnx.close()
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resp.text = json.dumps(result)
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@staticmethod
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@user_logger
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def on_post(req, resp):
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"""Handles POST requests"""
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access_control(req)
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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.ERROR', 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_DISTRIBUTION_SYSTEM_NAME')
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name = str.strip(new_values['data']['name'])
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if 'svg' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['svg'], str) or \
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len(str.strip(new_values['data']['svg'])) == 0:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.INVALID_SVG')
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svg = str.strip(new_values['data']['svg'])
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if 'description' in new_values['data'].keys() and \
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new_values['data']['description'] is not None and \
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len(str(new_values['data']['description'])) > 0:
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description = str.strip(new_values['data']['description'])
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else:
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description = None
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cnx = mysql.connector.connect(**config.myems_system_db)
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cursor = cnx.cursor()
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cursor.execute(" SELECT name "
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" FROM tbl_distribution_systems "
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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.close()
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raise falcon.HTTPError(falcon.HTTP_404, title='API.BAD_REQUEST',
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description='API.DISTRIBUTION_SYSTEM_NAME_IS_ALREADY_IN_USE')
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add_values = (" INSERT INTO tbl_distribution_systems "
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" (name, uuid, svg, description) "
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" VALUES (%s, %s, %s, %s) ")
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cursor.execute(add_values, (name,
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str(uuid.uuid4()),
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svg,
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description))
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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.close()
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resp.status = falcon.HTTP_201
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resp.location = '/distributionsystems/' + str(new_id)
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class DistributionSystemItem:
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@staticmethod
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def __init__():
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"""Initializes DistributionSystemItem"""
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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_METER_ID')
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cnx = mysql.connector.connect(**config.myems_system_db)
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cursor = cnx.cursor()
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query = (" SELECT id, name, uuid, "
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" svg, description "
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" FROM tbl_distribution_systems "
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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.close()
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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.DISTRIBUTION_SYSTEM_NOT_FOUND')
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else:
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meta_result = {"id": row[0],
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"name": row[1],
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"uuid": row[2],
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"svg": row[3],
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"description": row[4]}
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resp.text = json.dumps(meta_result)
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@staticmethod
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@user_logger
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def on_delete(req, resp, id_):
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access_control(req)
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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_DISTRIBUTION_SYSTEM_ID')
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cnx = mysql.connector.connect(**config.myems_system_db)
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cursor = cnx.cursor()
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cursor.execute(" SELECT name "
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" FROM tbl_distribution_systems "
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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.close()
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raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
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description='API.DISTRIBUTION_SYSTEM_NOT_FOUND')
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# check associated distribution circuits
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cursor.execute(" SELECT id "
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" FROM tbl_distribution_circuits "
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" WHERE distribution_system_id = %s ",
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(id_,))
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rows_distribution_circuits = cursor.fetchall()
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if rows_distribution_circuits is not None and len(rows_distribution_circuits) > 0:
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cursor.close()
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cnx.close()
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raise falcon.HTTPError(falcon.HTTP_400,
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title='API.BAD_REQUEST',
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description='API.THERE_IS_ASSOCIATED_DISTRIBUTION_CIRCUITS')
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cursor.execute(" DELETE FROM tbl_distribution_systems WHERE id = %s ", (id_,))
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cnx.commit()
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cursor.close()
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cnx.close()
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resp.status = falcon.HTTP_204
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@staticmethod
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@user_logger
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def on_put(req, resp, id_):
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"""Handles PUT requests"""
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access_control(req)
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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_DISTRIBUTION_SYSTEM_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_DISTRIBUTION_SYSTEM_NAME')
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name = str.strip(new_values['data']['name'])
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if 'svg' not in new_values['data'].keys() or \
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not isinstance(new_values['data']['svg'], str) or \
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len(str.strip(new_values['data']['svg'])) == 0:
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raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
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description='API.INVALID_SVG')
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svg = str.strip(new_values['data']['svg'])
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if 'description' in new_values['data'].keys() and \
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new_values['data']['description'] is not None and \
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len(str(new_values['data']['description'])) > 0:
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description = str.strip(new_values['data']['description'])
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else:
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description = None
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cnx = mysql.connector.connect(**config.myems_system_db)
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cursor = cnx.cursor()
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cursor.execute(" SELECT name "
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" FROM tbl_distribution_systems "
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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.close()
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raise falcon.HTTPError(falcon.HTTP_404, title='API.BAD_REQUEST',
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description='API.DISTRIBUTION_SYSTEM_NAME_IS_ALREADY_IN_USE')
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update_row = (" UPDATE tbl_distribution_systems "
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" SET name = %s, svg = %s, description = %s "
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" WHERE id = %s ")
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cursor.execute(update_row, (name,
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svg,
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description,
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id_))
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cnx.commit()
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cursor.close()
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cnx.close()
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resp.status = falcon.HTTP_200
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class DistributionSystemDistributionCircuitCollection:
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@staticmethod
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def __init__():
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"""Initializes DistributionSystemDistributionCircuitCollection"""
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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_DISTRIBUTION_SYSTEM_ID')
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cnx = mysql.connector.connect(**config.myems_system_db)
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cursor = cnx.cursor()
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cursor.execute(" SELECT name "
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" FROM tbl_distribution_systems "
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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.close()
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raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
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description='API.DISTRIBUTION_SYSTEM_NOT_FOUND')
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query = (" SELECT id, name, uuid, "
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" distribution_room, switchgear, peak_load, peak_current, customers, meters "
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" FROM tbl_distribution_circuits "
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" WHERE distribution_system_id = %s "
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" ORDER BY name ")
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cursor.execute(query, (id_,))
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rows = cursor.fetchall()
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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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meta_result = {"id": row[0], "name": row[1], "uuid": row[2],
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"distribution_room": row[3], "switchgear": row[4],
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"peak_load": row[5], "peak_current": row[6],
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"customers": row[7], "meters": row[8]}
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result.append(meta_result)
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resp.text = json.dumps(result)
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