myems-api/core/distributionsystem.py
import uuid
from datetime import datetime, timedelta
import falcon
import mysql.connector
import simplejson as json
from core.useractivity import user_logger, admin_control, access_control, api_key_control
import config
class DistributionSystemCollection:
def __init__(self):
"""Initializes DistributionSystemCollection"""
pass
@staticmethod
def on_options(req, resp):
resp.status = falcon.HTTP_200
@staticmethod
def on_get(req, resp):
if 'API-KEY' not in req.headers or \
not isinstance(req.headers['API-KEY'], str) or \
len(str.strip(req.headers['API-KEY'])) == 0:
access_control(req)
else:
api_key_control(req)
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
svg_dict = dict()
query = (" SELECT id, name, uuid, source_code "
" FROM tbl_svgs ")
cursor.execute(query)
rows_svgs = cursor.fetchall()
if rows_svgs is not None and len(rows_svgs) > 0:
for row in rows_svgs:
svg_dict[row[0]] = {"id": row[0],
"name": row[1],
"uuid": row[2],
"source_code": row[3]}
query = (" SELECT id, name, uuid, "
" svg_id, description "
" FROM tbl_distribution_systems "
" ORDER BY id ")
cursor.execute(query)
rows_distribution_systems = cursor.fetchall()
result = list()
if rows_distribution_systems is not None and len(rows_distribution_systems) > 0:
for row in rows_distribution_systems:
meta_result = {"id": row[0],
"name": row[1],
"uuid": row[2],
"svg": svg_dict.get(row[3], None),
"description": row[4]}
result.append(meta_result)
cursor.close()
cnx.close()
resp.text = json.dumps(result)
@staticmethod
@user_logger
def on_post(req, resp):
"""Handles POST requests"""
admin_control(req)
try:
raw_json = req.stream.read().decode('utf-8')
except Exception as ex:
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.FAILED_TO_READ_REQUEST_STREAM')
new_values = json.loads(raw_json)
if 'name' not in new_values['data'].keys() or \
not isinstance(new_values['data']['name'], str) or \
len(str.strip(new_values['data']['name'])) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_DISTRIBUTION_SYSTEM_NAME')
name = str.strip(new_values['data']['name'])
if 'svg_id' not in new_values['data'].keys() or \
not isinstance(new_values['data']['svg_id'], int) or \
new_values['data']['svg_id'] <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_SVG_ID')
svg_id = new_values['data']['svg_id']
if 'description' in new_values['data'].keys() and \
new_values['data']['description'] is not None and \
len(str(new_values['data']['description'])) > 0:
description = str.strip(new_values['data']['description'])
else:
description = None
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT name "
" FROM tbl_distribution_systems "
" WHERE name = %s ", (name,))
if cursor.fetchone() is not None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.DISTRIBUTION_SYSTEM_NAME_IS_ALREADY_IN_USE')
cursor.execute(" SELECT name "
" FROM tbl_svgs "
" WHERE id = %s ",
(svg_id,))
row = cursor.fetchone()
if row is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.SVG_NOT_FOUND')
add_values = (" INSERT INTO tbl_distribution_systems "
" (name, uuid, svg_id, description) "
" VALUES (%s, %s, %s, %s) ")
cursor.execute(add_values, (name,
str(uuid.uuid4()),
svg_id,
description))
new_id = cursor.lastrowid
cnx.commit()
cursor.close()
cnx.close()
resp.status = falcon.HTTP_201
resp.location = '/distributionsystems/' + str(new_id)
class DistributionSystemItem:
def __init__(self):
"""Initializes DistributionSystemItem"""
pass
@staticmethod
def on_options(req, resp, id_):
resp.status = falcon.HTTP_200
@staticmethod
def on_get(req, resp, id_):
if 'API-KEY' not in req.headers or \
not isinstance(req.headers['API-KEY'], str) or \
len(str.strip(req.headers['API-KEY'])) == 0:
access_control(req)
else:
api_key_control(req)
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_DISTRIBUTION_SYSTEM_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
svg_dict = dict()
query = (" SELECT id, name, uuid, source_code "
" FROM tbl_svgs ")
cursor.execute(query)
rows_svgs = cursor.fetchall()
if rows_svgs is not None and len(rows_svgs) > 0:
for row in rows_svgs:
svg_dict[row[0]] = {"id": row[0],
"name": row[1],
"uuid": row[2],
"source_code": row[3]}
query = (" SELECT id, name, uuid, "
" svg_id, description "
" FROM tbl_distribution_systems "
" WHERE id = %s ")
cursor.execute(query, (id_,))
row = cursor.fetchone()
cursor.close()
cnx.close()
if row is None:
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.DISTRIBUTION_SYSTEM_NOT_FOUND')
else:
meta_result = {"id": row[0],
"name": row[1],
"uuid": row[2],
"svg": svg_dict.get(row[3], None),
"description": row[4]}
resp.text = json.dumps(meta_result)
@staticmethod
@user_logger
def on_delete(req, resp, id_):
admin_control(req)
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_DISTRIBUTION_SYSTEM_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT name "
" FROM tbl_distribution_systems "
" WHERE id = %s ", (id_,))
if cursor.fetchone() is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.DISTRIBUTION_SYSTEM_NOT_FOUND')
cursor.execute(" DELETE FROM tbl_distribution_circuits_points WHERE distribution_circuit_id "
"IN (SELECT id FROM tbl_distribution_circuits WHERE distribution_system_id = %s) ", (id_,))
cursor.execute(" DELETE FROM tbl_distribution_circuits WHERE distribution_system_id = %s ", (id_,))
cursor.execute(" DELETE FROM tbl_distribution_systems WHERE id = %s ", (id_,))
cnx.commit()
cursor.close()
cnx.close()
resp.status = falcon.HTTP_204
@staticmethod
@user_logger
def on_put(req, resp, id_):
"""Handles PUT requests"""
admin_control(req)
try:
raw_json = req.stream.read().decode('utf-8')
except Exception as ex:
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.FAILED_TO_READ_REQUEST_STREAM')
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_DISTRIBUTION_SYSTEM_ID')
new_values = json.loads(raw_json)
if 'name' not in new_values['data'].keys() or \
not isinstance(new_values['data']['name'], str) or \
len(str.strip(new_values['data']['name'])) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_DISTRIBUTION_SYSTEM_NAME')
name = str.strip(new_values['data']['name'])
if 'svg_id' not in new_values['data'].keys() or \
not isinstance(new_values['data']['svg_id'], int) or \
new_values['data']['svg_id'] <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_SVG_ID')
svg_id = new_values['data']['svg_id']
if 'description' in new_values['data'].keys() and \
new_values['data']['description'] is not None and \
len(str(new_values['data']['description'])) > 0:
description = str.strip(new_values['data']['description'])
else:
description = None
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT name "
" FROM tbl_distribution_systems "
" WHERE name = %s AND id != %s ", (name, id_))
if cursor.fetchone() is not None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.DISTRIBUTION_SYSTEM_NAME_IS_ALREADY_IN_USE')
cursor.execute(" SELECT name "
" FROM tbl_svgs "
" WHERE id = %s ",
(new_values['data']['svg_id'],))
row = cursor.fetchone()
if row is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.SVG_NOT_FOUND')
update_row = (" UPDATE tbl_distribution_systems "
" SET name = %s, svg_id = %s, description = %s "
" WHERE id = %s ")
cursor.execute(update_row, (name,
svg_id,
description,
id_))
cnx.commit()
cursor.close()
cnx.close()
resp.status = falcon.HTTP_200
class DistributionSystemDistributionCircuitCollection:
def __init__(self):
"""Initializes DistributionSystemDistributionCircuitCollection"""
pass
@staticmethod
def on_options(req, resp, id_):
resp.status = falcon.HTTP_200
@staticmethod
def on_get(req, resp, id_):
if 'API-KEY' not in req.headers or \
not isinstance(req.headers['API-KEY'], str) or \
len(str.strip(req.headers['API-KEY'])) == 0:
access_control(req)
else:
api_key_control(req)
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_DISTRIBUTION_SYSTEM_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT name "
" FROM tbl_distribution_systems "
" WHERE id = %s ", (id_,))
if cursor.fetchone() is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.DISTRIBUTION_SYSTEM_NOT_FOUND')
query = (" SELECT id, name, uuid, "
" distribution_room, switchgear, peak_load, peak_current, customers, meters "
" FROM tbl_distribution_circuits "
" WHERE distribution_system_id = %s "
" ORDER BY name ")
cursor.execute(query, (id_,))
rows = cursor.fetchall()
result = list()
if rows is not None and len(rows) > 0:
for row in rows:
meta_result = {"id": row[0], "name": row[1], "uuid": row[2],
"distribution_room": row[3], "switchgear": row[4],
"peak_load": row[5], "peak_current": row[6],
"customers": row[7], "meters": row[8]}
result.append(meta_result)
resp.text = json.dumps(result)
class DistributionSystemExport:
def __init__(self):
"""Initializes DistributionSystemExport"""
pass
@staticmethod
def on_options(req, resp, id_):
resp.status = falcon.HTTP_200
@staticmethod
def on_get(req, resp, id_):
if 'API-KEY' not in req.headers or \
not isinstance(req.headers['API-KEY'], str) or \
len(str.strip(req.headers['API-KEY'])) == 0:
access_control(req)
else:
api_key_control(req)
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_DISTRIBUTION_SYSTEM_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
query = (" SELECT id, name, uuid "
" FROM tbl_svgs ")
cursor.execute(query)
rows_svgs = cursor.fetchall()
svg_dict = dict()
if rows_svgs is not None and len(rows_svgs) > 0:
for row in rows_svgs:
svg_dict[row[0]] = {"id": row[0],
"name": row[1],
"uuid": row[2]}
query = (" SELECT id, name, uuid, "
" svg_id, description "
" FROM tbl_distribution_systems "
" WHERE id = %s ")
cursor.execute(query, (id_,))
row = cursor.fetchone()
if row is None:
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.DISTRIBUTION_SYSTEM_NOT_FOUND')
else:
meta_result = {"id": row[0],
"name": row[1],
"uuid": row[2],
"svg": svg_dict.get(row[3], None),
"description": row[4],
"circuits": None}
query = (" SELECT id, name, uuid, "
" distribution_room, switchgear, peak_load, peak_current, customers, meters "
" FROM tbl_distribution_circuits "
" WHERE distribution_system_id = %s "
" ORDER BY name ")
cursor.execute(query, (id_,))
rows = cursor.fetchall()
result = list()
if rows is not None and len(rows) > 0:
for row in rows:
circuit_result = {"id": row[0], "name": row[1], "uuid": row[2],
"distribution_room": row[3], "switchgear": row[4],
"peak_load": row[5], "peak_current": row[6],
"customers": row[7], "meters": row[8],
"points": None}
query = (" SELECT p.id AS point_id, p.name AS point_name, "
" dc.id AS distribution_circuit_id, dc.name AS distribution_circuit_name, "
" dc.uuid AS distribution_circuit_uuid "
" FROM tbl_points p, tbl_distribution_circuits_points dcp, tbl_distribution_circuits dc "
" WHERE dcp.distribution_circuit_id = %s AND p.id = dcp.point_id "
" AND dcp.distribution_circuit_id = dc.id "
" ORDER BY p.name ")
cursor.execute(query, (circuit_result['id'],))
rows = cursor.fetchall()
points = list()
if rows is not None and len(rows) > 0:
for point_row in rows:
point_result = {"id": point_row[0], "name": point_row[1]}
points.append(point_result)
circuit_result['points'] = points
result.append(circuit_result)
meta_result['circuits'] = result
cursor.close()
cnx.close()
resp.text = json.dumps(meta_result)
class DistributionSystemImport:
def __init__(self):
"""Initializes DistributionSystemImport"""
pass
@staticmethod
def on_options(req, resp):
resp.status = falcon.HTTP_200
@staticmethod
@user_logger
def on_post(req, resp):
"""Handles POST requests"""
admin_control(req)
try:
raw_json = req.stream.read().decode('utf-8')
except Exception as ex:
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.FAILED_TO_READ_REQUEST_STREAM')
new_values = json.loads(raw_json)
if 'name' not in new_values.keys() or \
not isinstance(new_values['name'], str) or \
len(str.strip(new_values['name'])) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_DISTRIBUTION_SYSTEM_NAME')
name = str.strip(new_values['name'])
if 'svg' not in new_values.keys() or \
'id' not in new_values['svg'].keys() or \
not isinstance(new_values['svg']['id'], int) or \
new_values['svg']['id'] <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_SVG_ID')
svg_id = new_values['svg']['id']
if 'description' in new_values.keys() and \
new_values['description'] is not None and \
len(str(new_values['description'])) > 0:
description = str.strip(new_values['description'])
else:
description = None
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT name "
" FROM tbl_distribution_systems "
" WHERE name = %s ", (name,))
if cursor.fetchone() is not None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.DISTRIBUTION_SYSTEM_NAME_IS_ALREADY_IN_USE')
cursor.execute(" SELECT name "
" FROM tbl_svgs "
" WHERE id = %s ",
(svg_id,))
row = cursor.fetchone()
if row is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.SVG_NOT_FOUND')
add_values = (" INSERT INTO tbl_distribution_systems "
" (name, uuid, svg_id, description) "
" VALUES (%s, %s, %s, %s) ")
cursor.execute(add_values, (name,
str(uuid.uuid4()),
svg_id,
description))
new_id = cursor.lastrowid
if new_values['circuits'] is not None and len(new_values['circuits']) > 0:
for circuit in new_values['circuits']:
add_values = (" INSERT INTO tbl_distribution_circuits "
" (name, uuid, distribution_system_id,"
" distribution_room, switchgear, peak_load, peak_current, customers, meters) "
" VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s) ")
cursor.execute(add_values, (circuit['name'],
str(uuid.uuid4()),
new_id,
circuit['distribution_room'],
circuit['switchgear'],
circuit['peak_load'],
circuit['peak_current'],
circuit['customers'],
circuit['meters']))
circuit_id = cursor.lastrowid
if circuit['points'] is not None and len(circuit['points']) > 0:
for point in circuit['points']:
cursor.execute(" SELECT name "
" FROM tbl_points "
" WHERE id = %s ", (point['id'],))
if cursor.fetchone() is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.POINT_NOT_FOUND')
query = (" SELECT id "
" FROM tbl_distribution_circuits_points "
" WHERE distribution_circuit_id = %s AND point_id = %s")
cursor.execute(query, (circuit_id, point['id'],))
if cursor.fetchone() is not None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.ERROR',
description='API.DISTRIBUTION_CIRCUIT_POINT_RELATION_EXISTS')
add_row = (" INSERT INTO tbl_distribution_circuits_points (distribution_circuit_id, point_id) "
" VALUES (%s, %s) ")
cursor.execute(add_row, (circuit_id, point['id'],))
cnx.commit()
cursor.close()
cnx.close()
resp.status = falcon.HTTP_201
resp.location = '/distributionsystems/' + str(new_id)
class DistributionSystemClone:
def __init__(self):
"""Initializes DistributionSystemClone"""
pass
@staticmethod
def on_options(req, resp, id_):
resp.status = falcon.HTTP_200
@staticmethod
@user_logger
def on_post(req, resp, id_):
if 'API-KEY' not in req.headers or \
not isinstance(req.headers['API-KEY'], str) or \
len(str.strip(req.headers['API-KEY'])) == 0:
access_control(req)
else:
api_key_control(req)
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_DISTRIBUTION_SYSTEM_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
query = (" SELECT id, name, uuid, "
" svg_id, description "
" FROM tbl_distribution_systems "
" WHERE id = %s ")
cursor.execute(query, (id_,))
row = cursor.fetchone()
if row is None:
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.DISTRIBUTION_SYSTEM_NOT_FOUND')
else:
meta_result = {"id": row[0],
"name": row[1],
"uuid": row[2],
"svg_id": row[3],
"description": row[4],
"circuits": None}
query = (" SELECT id, name, uuid, "
" distribution_room, switchgear, peak_load, peak_current, customers, meters "
" FROM tbl_distribution_circuits "
" WHERE distribution_system_id = %s "
" ORDER BY name ")
cursor.execute(query, (id_,))
rows = cursor.fetchall()
result = list()
if rows is not None and len(rows) > 0:
for row in rows:
circuit_result = {"id": row[0], "name": row[1], "uuid": row[2],
"distribution_room": row[3], "switchgear": row[4],
"peak_load": row[5], "peak_current": row[6],
"customers": row[7], "meters": row[8],
"points": None}
query = (" SELECT p.id AS point_id, p.name AS point_name, p.address AS point_address, "
" dc.id AS distribution_circuit_id, dc.name AS distribution_circuit_name, "
" dc.uuid AS distribution_circuit_uuid "
" FROM tbl_points p, tbl_distribution_circuits_points dcp, tbl_distribution_circuits dc "
" WHERE dcp.distribution_circuit_id = %s AND p.id = dcp.point_id "
" AND dcp.distribution_circuit_id = dc.id "
" ORDER BY p.name ")
cursor.execute(query, (circuit_result['id'],))
rows = cursor.fetchall()
points = list()
if rows is not None and len(rows) > 0:
for point_row in rows:
point_result = {"id": point_row[0], "name": point_row[1], "address": point_row[2]}
points.append(point_result)
circuit_result['points'] = points
result.append(circuit_result)
meta_result['circuits'] = result
timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6])
if config.utc_offset[0] == '-':
timezone_offset = -timezone_offset
new_name = (str.strip(meta_result['name'])
+ (datetime.now()
+ timedelta(minutes=timezone_offset)).isoformat(sep='-', timespec='seconds'))
add_values = (" INSERT INTO tbl_distribution_systems "
" (name, uuid, svg_id, description) "
" VALUES (%s, %s, %s, %s) ")
cursor.execute(add_values, (new_name,
str(uuid.uuid4()),
meta_result['svg_id'],
meta_result['description']))
new_id = cursor.lastrowid
if meta_result['circuits'] is not None and len(meta_result['circuits']) > 0:
for circuit in meta_result['circuits']:
add_values = (" INSERT INTO tbl_distribution_circuits "
" (name, uuid, distribution_system_id,"
" distribution_room, switchgear, peak_load, peak_current, customers, meters) "
" VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s) ")
cursor.execute(add_values, (circuit['name'],
str(uuid.uuid4()),
new_id,
circuit['distribution_room'],
circuit['switchgear'],
circuit['peak_load'],
circuit['peak_current'],
circuit['customers'],
circuit['meters']))
circuit_id = cursor.lastrowid
if circuit['points'] is not None and len(circuit['points']) > 0:
for point in circuit['points']:
cursor.execute(" SELECT name "
" FROM tbl_points "
" WHERE id = %s ", (point['id'],))
if cursor.fetchone() is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.POINT_NOT_FOUND')
query = (" SELECT id "
" FROM tbl_distribution_circuits_points "
" WHERE distribution_circuit_id = %s AND point_id = %s")
cursor.execute(query, (circuit_id, point['id'],))
if cursor.fetchone() is not None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.ERROR',
description='API.DISTRIBUTION_CIRCUIT_POINT_RELATION_EXISTS')
add_row = (
" INSERT INTO tbl_distribution_circuits_points (distribution_circuit_id, point_id) "
" VALUES (%s, %s) ")
cursor.execute(add_row, (circuit_id, point['id'],))
cnx.commit()
cursor.close()
cnx.close()
resp.status = falcon.HTTP_201
resp.location = '/distributionsystems/' + str(new_id)