myems-api/core/svg.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 SVGCollection:
def __init__(self):
"""Initializes SVGCollection"""
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)
# if turn quick mode on, do not return source code
is_quick_mode = False
if 'QUICKMODE' in req.headers and \
isinstance(req.headers['QUICKMODE'], str) and \
len(str.strip(req.headers['QUICKMODE'])) > 0 and \
str.lower(req.headers['QUICKMODE']) in ('true', 't', 'on', 'yes', 'y'):
is_quick_mode = True
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
if is_quick_mode:
query = (" SELECT id, name, uuid "
" FROM tbl_svgs "
" ORDER BY id ")
cursor.execute(query)
rows_svgs = cursor.fetchall()
result = list()
if rows_svgs is not None and len(rows_svgs) > 0:
for row in rows_svgs:
meta_result = {"id": row[0],
"name": row[1],
"uuid": row[2]}
result.append(meta_result)
else:
query = (" SELECT id, name, uuid, source_code, description "
" FROM tbl_svgs "
" ORDER BY id ")
cursor.execute(query)
rows_svgs = cursor.fetchall()
result = list()
if rows_svgs is not None and len(rows_svgs) > 0:
for row in rows_svgs:
meta_result = {"id": row[0],
"name": row[1],
"uuid": row[2],
"source_code": row[3],
"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_SVG_NAME')
name = str.strip(new_values['data']['name'])
if 'source_code' not in new_values['data'].keys() or \
not isinstance(new_values['data']['source_code'], str) or \
len(str.strip(new_values['data']['source_code'])) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_SVG_SOURCE_CODE')
source_code = str.strip(new_values['data']['source_code'])
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_svgs "
" 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.SVG_NAME_IS_ALREADY_IN_USE')
add_values = (" INSERT INTO tbl_svgs "
" (name, uuid, source_code, description) "
" VALUES (%s, %s, %s, %s) ")
cursor.execute(add_values, (name,
str(uuid.uuid4()),
source_code,
description))
new_id = cursor.lastrowid
cnx.commit()
cursor.close()
cnx.close()
resp.status = falcon.HTTP_201
resp.location = '/svgs/' + str(new_id)
class SVGItem:
def __init__(self):
"""Initializes SVGItem"""
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_SVG_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
query = (" SELECT id, name, uuid, source_code, description "
" FROM tbl_svgs "
" 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.SVG_NOT_FOUND')
else:
meta_result = {"id": row[0],
"name": row[1],
"uuid": row[2],
"source_code": row[3],
"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_SVG_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
cursor.execute(" SELECT name "
" FROM tbl_svgs "
" 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.SVG_NOT_FOUND')
# todo: check relations with microgrid and energy storage power station
cursor.execute(" DELETE FROM tbl_svgs 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_SVG_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_SVG_NAME')
name = str.strip(new_values['data']['name'])
if 'source_code' not in new_values['data'].keys() or \
not isinstance(new_values['data']['source_code'], str) or \
len(str.strip(new_values['data']['source_code'])) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_SVG_SOURCE_CODE')
source_code = str.strip(new_values['data']['source_code'])
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_svgs "
" 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.SVG_NAME_IS_ALREADY_IN_USE')
update_row = (" UPDATE tbl_svgs "
" SET name = %s, source_code = %s, description = %s "
" WHERE id = %s ")
cursor.execute(update_row, (name,
source_code,
description,
id_))
cnx.commit()
cursor.close()
cnx.close()
resp.status = falcon.HTTP_200
class SVGExport:
def __init__(self):
"""Initializes SVGExport"""
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_SVG_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
query = (" SELECT id, name, uuid, source_code, description "
" FROM tbl_svgs "
" 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.SVG_NOT_FOUND')
else:
meta_result = {"id": row[0],
"name": row[1],
"uuid": row[2],
"source_code": row[3],
"description": row[4]}
cursor.close()
cnx.close()
resp.text = json.dumps(meta_result)
class SVGImport:
def __init__(self):
"""Initializes SVGImport"""
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_SVG_NAME')
name = str.strip(new_values['name'])
if 'source_code' not in new_values.keys() or \
not isinstance(new_values['source_code'], str) or \
len(str.strip(new_values['source_code'])) == 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_SVG_SOURCE_CODE')
source_code = str.strip(new_values['source_code'])
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_svgs "
" 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.SVG_NAME_IS_ALREADY_IN_USE')
add_values = (" INSERT INTO tbl_svgs "
" (name, uuid, source_code, description) "
" VALUES (%s, %s, %s, %s) ")
cursor.execute(add_values, (name,
str(uuid.uuid4()),
source_code,
description))
new_id = cursor.lastrowid
cnx.commit()
cursor.close()
cnx.close()
resp.status = falcon.HTTP_201
resp.location = '/svgs/' + str(new_id)
class SVGClone:
def __init__(self):
"""Initializes SVGClone"""
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_SVG_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
query = (" SELECT id, name, uuid, source_code, description "
" FROM tbl_svgs "
" 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.SVG_NOT_FOUND')
else:
meta_result = {"id": row[0],
"name": row[1],
"uuid": row[2],
"source_code": row[3],
"description": row[4]}
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_svgs "
" (name, uuid, source_code, description) "
" VALUES (%s, %s, %s, %s) ")
cursor.execute(add_values, (new_name,
str(uuid.uuid4()),
meta_result['source_code'],
meta_result['description']))
new_id = cursor.lastrowid
cnx.commit()
cursor.close()
cnx.close()
resp.status = falcon.HTTP_201
resp.location = '/svgs/' + str(new_id)