227 lines
12 KiB
Python
227 lines
12 KiB
Python
import falcon
|
|
import simplejson as json
|
|
import mysql.connector
|
|
import config
|
|
from anytree import Node, AnyNode, LevelOrderIter
|
|
import excelexporters.metertracking
|
|
from datetime import datetime, timedelta, timezone
|
|
|
|
|
|
class Reporting:
|
|
@staticmethod
|
|
def __init__():
|
|
pass
|
|
|
|
@staticmethod
|
|
def on_options(req, resp):
|
|
resp.status = falcon.HTTP_200
|
|
|
|
####################################################################################################################
|
|
# PROCEDURES
|
|
# Step 1: valid parameters
|
|
# Step 2: build a space tree
|
|
# Step 3: query all meters in the space tree
|
|
# Step 4: query start value and end value
|
|
# Step 5: construct the report
|
|
####################################################################################################################
|
|
@staticmethod
|
|
def on_get(req, resp):
|
|
print(req.params)
|
|
space_id = req.params.get('spaceid')
|
|
reporting_period_start_datetime_local = req.params.get('reportingperiodstartdatetime')
|
|
reporting_period_end_datetime_local = req.params.get('reportingperiodenddatetime')
|
|
|
|
################################################################################################################
|
|
# Step 1: valid parameters
|
|
################################################################################################################
|
|
if space_id is None:
|
|
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', description='API.INVALID_SPACE_ID')
|
|
else:
|
|
space_id = str.strip(space_id)
|
|
if not space_id.isdigit() or int(space_id) <= 0:
|
|
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST', description='API.INVALID_SPACE_ID')
|
|
else:
|
|
space_id = int(space_id)
|
|
|
|
timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6])
|
|
if config.utc_offset[0] == '-':
|
|
timezone_offset = -timezone_offset
|
|
|
|
if reporting_period_start_datetime_local is None:
|
|
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
|
|
description="API.INVALID_REPORTING_PERIOD_START_DATETIME")
|
|
else:
|
|
reporting_period_start_datetime_local = str.strip(reporting_period_start_datetime_local)
|
|
try:
|
|
reporting_start_datetime_utc = datetime.strptime(reporting_period_start_datetime_local,
|
|
'%Y-%m-%dT%H:%M:%S')
|
|
except ValueError:
|
|
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
|
|
description="API.INVALID_REPORTING_PERIOD_START_DATETIME")
|
|
reporting_start_datetime_utc = reporting_start_datetime_utc.replace(tzinfo=timezone.utc) - \
|
|
timedelta(minutes=timezone_offset)
|
|
|
|
if reporting_period_end_datetime_local is None:
|
|
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
|
|
description="API.INVALID_REPORTING_PERIOD_END_DATETIME")
|
|
else:
|
|
reporting_period_end_datetime_local = str.strip(reporting_period_end_datetime_local)
|
|
try:
|
|
reporting_end_datetime_utc = datetime.strptime(reporting_period_end_datetime_local,
|
|
'%Y-%m-%dT%H:%M:%S')
|
|
except ValueError:
|
|
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
|
|
description="API.INVALID_REPORTING_PERIOD_END_DATETIME")
|
|
reporting_end_datetime_utc = reporting_end_datetime_utc.replace(tzinfo=timezone.utc) - \
|
|
timedelta(minutes=timezone_offset)
|
|
|
|
if reporting_start_datetime_utc >= reporting_end_datetime_utc:
|
|
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
|
|
description='API.INVALID_REPORTING_PERIOD_END_DATETIME')
|
|
|
|
if reporting_start_datetime_utc + timedelta(minutes=15) >= reporting_end_datetime_utc:
|
|
raise falcon.HTTPError(falcon.HTTP_400, title='API.BAD_REQUEST',
|
|
description='API.THE_REPORTING_PERIOD_MUST_BE_LONGER_THAN_15_MINUTES')
|
|
|
|
cnx_system_db = mysql.connector.connect(**config.myems_system_db)
|
|
cursor_system_db = cnx_system_db.cursor(dictionary=True)
|
|
|
|
cnx_historical = mysql.connector.connect(**config.myems_historical_db)
|
|
cursor_historical = cnx_historical.cursor()
|
|
|
|
cursor_system_db.execute(" SELECT name "
|
|
" FROM tbl_spaces "
|
|
" WHERE id = %s ", (space_id,))
|
|
row = cursor_system_db.fetchone()
|
|
|
|
if row is None:
|
|
if cursor_system_db:
|
|
cursor_system_db.close()
|
|
if cnx_system_db:
|
|
cnx_system_db.disconnect()
|
|
raise falcon.HTTPError(falcon.HTTP_404, title='API.NOT_FOUND',
|
|
description='API.SPACE_NOT_FOUND')
|
|
else:
|
|
space_name = row['name']
|
|
|
|
################################################################################################################
|
|
# Step 2: build a space tree
|
|
################################################################################################################
|
|
|
|
query = (" SELECT id, name, parent_space_id "
|
|
" FROM tbl_spaces "
|
|
" ORDER BY id ")
|
|
cursor_system_db.execute(query)
|
|
rows_spaces = cursor_system_db.fetchall()
|
|
node_dict = dict()
|
|
if rows_spaces is not None and len(rows_spaces) > 0:
|
|
for row in rows_spaces:
|
|
parent_node = node_dict[row['parent_space_id']] if row['parent_space_id'] is not None else None
|
|
node_dict[row['id']] = AnyNode(id=row['id'], parent=parent_node, name=row['name'])
|
|
|
|
################################################################################################################
|
|
# Step 3: query all meters in the space tree
|
|
################################################################################################################
|
|
meter_dict = dict()
|
|
space_dict = dict()
|
|
|
|
for node in LevelOrderIter(node_dict[space_id]):
|
|
space_dict[node.id] = node.name
|
|
|
|
cursor_system_db.execute(" SELECT m.id, m.name AS meter_name, s.name AS space_name, "
|
|
" cc.name AS cost_center_name, ec.name AS energy_category_name, "
|
|
" m.description "
|
|
" FROM tbl_spaces s, tbl_spaces_meters sm, tbl_meters m, tbl_cost_centers cc, "
|
|
" tbl_energy_categories ec "
|
|
" WHERE s.id IN ( " + ', '.join(map(str, space_dict.keys())) + ") "
|
|
" AND sm.space_id = s.id AND sm.meter_id = m.id "
|
|
" AND m.cost_center_id = cc.id AND m.energy_category_id = ec.id ", )
|
|
rows_meters = cursor_system_db.fetchall()
|
|
if rows_meters is not None and len(rows_meters) > 0:
|
|
for row in rows_meters:
|
|
meter_dict[row['id']] = {"meter_name": row['meter_name'],
|
|
"space_name": row['space_name'],
|
|
"cost_center_name": row['cost_center_name'],
|
|
"energy_category_name": row['energy_category_name'],
|
|
"description": row['description']}
|
|
|
|
################################################################################################################
|
|
# Step 4: query start value and end value
|
|
################################################################################################################
|
|
for meter_id in meter_dict:
|
|
cursor_system_db.execute(" SELECT point_id "
|
|
" FROM tbl_meters_points mp, tbl_points p"
|
|
" WHERE p.id = mp.point_id AND p.object_type = 'ENERGY_VALUE' "
|
|
" AND meter_id = %s ", (meter_id, ))
|
|
|
|
rows_points_id = cursor_system_db.fetchall()
|
|
|
|
start_value = None
|
|
end_value = None
|
|
|
|
if rows_points_id is not None and len(rows_points_id) > 0:
|
|
query_start_value = (" SELECT actual_value "
|
|
" FROM tbl_energy_value "
|
|
" where point_id in ("
|
|
+ ', '.join(map(lambda x: str(x['point_id']), rows_points_id)) + ") "
|
|
" AND utc_date_time BETWEEN %s AND %s "
|
|
" order by utc_date_time ASC LIMIT 0,1")
|
|
query_end_value = (" SELECT actual_value "
|
|
" FROM tbl_energy_value "
|
|
" where point_id in ("
|
|
+ ', '.join(map(lambda x: str(x['point_id']), rows_points_id)) + ") "
|
|
" AND utc_date_time BETWEEN %s AND %s "
|
|
" order by utc_date_time DESC LIMIT 0,1")
|
|
cursor_historical.execute(query_start_value,
|
|
(reporting_start_datetime_utc,
|
|
(reporting_start_datetime_utc + timedelta(minutes=15)), ))
|
|
row_start_value = cursor_historical.fetchone()
|
|
if row_start_value is not None:
|
|
start_value = row_start_value[0]
|
|
|
|
cursor_historical.execute(query_end_value,
|
|
((reporting_end_datetime_utc - timedelta(minutes=15)),
|
|
reporting_end_datetime_utc, ))
|
|
row_end_value = cursor_historical.fetchone()
|
|
|
|
if row_end_value is not None:
|
|
end_value = row_end_value[0]
|
|
|
|
meter_dict[meter_id]['start_value'] = start_value
|
|
meter_dict[meter_id]['end_value'] = end_value
|
|
|
|
if cursor_system_db:
|
|
cursor_system_db.close()
|
|
if cnx_system_db:
|
|
cnx_system_db.disconnect()
|
|
|
|
if cursor_historical:
|
|
cursor_historical.close()
|
|
if cnx_historical:
|
|
cnx_historical.disconnect()
|
|
|
|
################################################################################################################
|
|
# Step 5: construct the report
|
|
################################################################################################################
|
|
meter_list = list()
|
|
for meter_id, meter in meter_dict.items():
|
|
meter_list.append({
|
|
"id": meter_id,
|
|
"meter_name": meter['meter_name'],
|
|
"space_name": meter['space_name'],
|
|
"cost_center_name": meter['cost_center_name'],
|
|
"energy_category_name": meter['energy_category_name'],
|
|
"description": meter['description'],
|
|
"start_value": meter['start_value'],
|
|
"end_value": meter['end_value']
|
|
})
|
|
|
|
result = {'meters': meter_list}
|
|
# export result to Excel file and then encode the file to base64 string
|
|
result['excel_bytes_base64'] = \
|
|
excelexporters.metertracking.export(result,
|
|
space_name,
|
|
reporting_period_start_datetime_local,
|
|
reporting_period_end_datetime_local)
|
|
resp.body = json.dumps(result)
|