67 lines
1.7 KiB
Python
67 lines
1.7 KiB
Python
from flask import request, session
|
|
from datetime import datetime
|
|
import re
|
|
from common import Reader, Writer
|
|
import json
|
|
|
|
class HttpRequestReader(Reader):
|
|
"""
|
|
This class is designed to read data from an Http request file handler provided to us by flask
|
|
The file will be heald in memory and processed accordingly
|
|
NOTE: This is inefficient and can crash a micro-instance (becareful)
|
|
"""
|
|
|
|
def __init__(self,**params):
|
|
self.file_length = 0
|
|
try:
|
|
|
|
#self.file = params['file']
|
|
#self.file.seek(0, os.SEEK_END)
|
|
#self.file_length = self.file.tell()
|
|
|
|
#print 'size of file ',self.file_length
|
|
self.content = params['file'].readlines()
|
|
self.file_length = len(self.content)
|
|
except Exception as e:
|
|
print ("Error ... ",e)
|
|
pass
|
|
|
|
def isready(self):
|
|
return self.file_length > 0
|
|
def read(self,size =-1):
|
|
i = 1
|
|
for row in self.content:
|
|
i += 1
|
|
if size == i:
|
|
break
|
|
yield row
|
|
|
|
class HttpSessionWriter(Writer):
|
|
"""
|
|
This class is designed to write data to a session/cookie
|
|
"""
|
|
def __init__(self,**params):
|
|
"""
|
|
@param key required session key
|
|
"""
|
|
self.session = params['queue']
|
|
self.session['sql'] = []
|
|
self.session['csv'] = []
|
|
self.tablename = re.sub('..+$','',params['filename'])
|
|
self.session['uid'] = params['uid']
|
|
#self.xchar = params['xchar']
|
|
|
|
|
|
def format_sql(self,row):
|
|
values = "','".join([col.replace('"','').replace("'",'') for col in row])
|
|
return "".join(["INSERT INTO :table VALUES('",values,"');\n"]).replace(':table',self.tablename)
|
|
def isready(self):
|
|
return True
|
|
def write(self,**params):
|
|
label = params['label']
|
|
row = params ['row']
|
|
|
|
if label == 'usable':
|
|
self.session['csv'].append(self.format(row,','))
|
|
self.session['sql'].append(self.format_sql(row))
|