myems-api/reports/advancedreportfile.py
import base64
import sys
from datetime import datetime, timedelta, timezone
import falcon
import mysql.connector
import simplejson as json
from core.useractivity import access_control, api_key_control
import config
class AdvancedReportFileCollection:
def __init__(self):
"""Initializes Class"""
pass
@staticmethod
def on_options(req, resp):
resp.status = falcon.HTTP_200
####################################################################################################################
# PROCEDURES
# Step 1: valid parameters
# Step 2: query advanced reports
# Step 3: construct the result
####################################################################################################################
@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)
print(req.params)
reporting_period_start_datetime_local = req.params.get('reportingperiodstartdatetime')
reporting_period_end_datetime_local = req.params.get('reportingperiodenddatetime')
################################################################################################################
# Step 1: valid parameters
################################################################################################################
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(status=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(status=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)
# nomalize the start datetime
if config.minutes_to_count == 30 and reporting_start_datetime_utc.minute >= 30:
reporting_start_datetime_utc = reporting_start_datetime_utc.replace(minute=30, second=0, microsecond=0)
else:
reporting_start_datetime_utc = reporting_start_datetime_utc.replace(minute=0, second=0, microsecond=0)
if reporting_period_end_datetime_local is None:
raise falcon.HTTPError(status=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').replace(tzinfo=timezone.utc) - \
timedelta(minutes=timezone_offset)
except ValueError:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description="API.INVALID_REPORTING_PERIOD_END_DATETIME")
if reporting_start_datetime_utc >= reporting_end_datetime_utc:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_REPORTING_PERIOD_END_DATETIME')
################################################################################################################
# Step 2: query advanced reports
################################################################################################################
cnx_reporting = mysql.connector.connect(**config.myems_reporting_db)
cursor_reporting = cnx_reporting.cursor()
query = (" SELECT id, file_name, uuid, create_datetime_utc, file_type, file_object "
" FROM tbl_reports_files "
" WHERE create_datetime_utc >= %s AND create_datetime_utc < %s "
" ORDER BY create_datetime_utc desc ")
cursor_reporting.execute(query, (reporting_start_datetime_utc, reporting_end_datetime_utc))
rows = cursor_reporting.fetchall()
if cursor_reporting:
cursor_reporting.close()
if cnx_reporting:
cnx_reporting.close()
################################################################################################################
# Step 3: construct the result
################################################################################################################
result = list()
if rows is not None and len(rows) > 0:
for row in rows:
# Base64 encode the bytes
# get the Base64 encoded data using human-readable characters.
meta_result = {"id": row[0],
"file_name": row[1],
"uuid": row[2],
"create_datetime_local": (row[3].replace(tzinfo=None) +
timedelta(minutes=timezone_offset)).isoformat(),
"file_type": row[4],
"file_size_bytes": sys.getsizeof(row[5]),
"file_bytes_base64": (base64.b64encode(row[5])).decode('utf-8')}
result.append(meta_result)
resp.text = json.dumps(result)
class AdvancedReportFileItem:
def __init__(self):
"""Initializes Class"""
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_ADVANCED_REPORT_ID')
cnx_reporting = mysql.connector.connect(**config.myems_reporting_db)
cursor_reporting = cnx_reporting.cursor()
query = (" SELECT id, file_name, uuid, create_datetime_utc, file_type, file_object "
" FROM tbl_reports_files "
" WHERE id = %s ")
cursor_reporting.execute(query, (id_,))
row = cursor_reporting.fetchone()
if cursor_reporting:
cursor_reporting.close()
if cnx_reporting:
cnx_reporting.close()
if row is None:
raise falcon.HTTPError(status=falcon.HTTP_404,
title='API.NOT_FOUND',
description='API.ADVANCED_REPORT_NOT_FOUND')
# Base64 encode the bytes
# get the Base64 encoded data using human-readable characters.
result = {"id": row[0],
"file_name": row[1],
"uuid": row[2],
"create_datetime": row[3].replace(tzinfo=timezone.utc).timestamp() * 1000,
"file_type": row[4],
"file_bytes_base64": (base64.b64encode(row[5])).decode('utf-8')}
resp.text = json.dumps(result)
@staticmethod
def on_delete(req, resp, id_):
access_control(req)
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.INVALID_ADVANCED_REPORT_ID')
cnx_reporting = mysql.connector.connect(**config.myems_reporting_db)
cursor_reporting = cnx_reporting.cursor()
cursor_reporting.execute(" SELECT id "
" FROM tbl_reports_files "
" WHERE id = %s ", (id_,))
if cursor_reporting.fetchone() is None:
cursor_reporting.close()
cnx_reporting.close()
raise falcon.HTTPError(status=falcon.HTTP_404,
title='API.NOT_FOUND',
description='API.ADVANCED_REPORT_NOT_FOUND')
cursor_reporting.execute(" DELETE FROM tbl_reports_files "
" WHERE id = %s ", (id_,))
cnx_reporting.commit()
if cursor_reporting:
cursor_reporting.close()
if cnx_reporting:
cnx_reporting.close()
resp.status = falcon.HTTP_204