def GenRedeem(db):
try:
log_time = time.asctime( time.localtime(time.time()) )
# Get parameters from client
email = request.GET.get('email')
item_no = request.GET.get('item_no')
if email is None or item_no is None:
logging.error('[Insufficient Parameters] %s %s - %s' % (email, item_no, log_time))
return HTTPError(403, 'Insufficient request parameters.')
if validateEmail(email) == 0:
logging.error('[Invalid Email] %s %s - %s' % (email, item_no, log_time))
return HTTPError(403, 'Invalid email address.')
# Check the email is existed or not
try:
entity = db.query(Redeem).filter_by(owner_email=email).first()
if entity:
return HTTPResponse('%s already registered before!\n Your code here:%s' % (email,
entity.redeem_code))
else:
# Generate redeem_code and add to Mysql
with transaction.manager:
# Generate the 'unique' redeem_code
redeem_code = codeGenerator(8)
while(db.query(Redeem).filter_by(redeem_code=redeem_code).first() != None):
redeem_code = codeGenerator(8)
entity = Redeem(email, redeem_code, item_no)
db.add(entity)
return HTTPResponse('%s registeres success! Your code here:%s' % (email, redeem_code))
except:
logging.error('[SQL Insert Error] %s - %s' % (sys.exc_info()[0], log_time))
return HTTPError(599, 'Server is busy.')
except:
logging.error('[Server Error] %s - %s' % (sys.exc_info()[0], log_time))
return HTTPError(599, 'Server is busy.')
def RecRedeem(db):
try:
log_time = time.asctime ( time.localtime(time.time()) )
# Get parameters from client
receiver_email = request.GET.get('receiver_email')
redeem_code = request.GET.get('redeem_code')
if receiver_email is None or redeem_code is None:
logging.error('[Insufficient Parameters] %s %s - %s' % (receiver_email, redeem_code, log_time))
return HTTPError(403, 'Insufficient request parameters.')
if validateEmail(receiver_email) == 0:
logging.error('[Invalid Email] %s %s - %s' % (receiver_email, redeem_code, log_time))
return HTTPError(403, 'Invalid email address.')
try:
# The system have to check four condictions
# 1. Whether the user receive more than three redeem codes
# 2. Validate the redeem code
# 3. Can not send to myself
# 4. Only can use one time
with transaction.manager:
# Whether the user receive more than three redeem code
entityCount = db.query(Redeem).filter_by(receiver_email=receiver_email).count()
if entityCount >= 3:
logging.error('[Exceed Redeem Code Limitation] %s %s - %s' % (receiver_email,
redeem_code,
log_time))
return HTTPError(403, 'Can not get more than three redeem codes.')
else:
# Validate the redeem code
entity = db.query(Redeem).filter_by(redeem_code=redeem_code).first()
if entity:
# Can not send to myself
if entity.owner_email == receiver_email:
logging.error('[Send to Myself] %s - %s' % (receiver_email, log_time))
return HTTPError(403, 'Can not send to yourself.')
# Only can use one time
elif entity.receiver_email is not None:
logging.error('[Redeem Code Exceed Limitation] %s %s - %s' % (receiver_email,
redeem_code,
log_time))
return HTTPError(403, 'Redeem code is already used.')
# Record the receive information
else:
entity.receiver_email = receiver_email
entity.receive_ip = request.remote_addr
entity.receive_time = datetime.datetime.utcnow()
return HTTPResponse('Congraduation! Your item here:%s' % (entity.item_no))
else:
logging.error('[Invalid redeem code] %s %s %s - %s' % (receiver_email,
redeem_code,
request.remote_addr,
log_time))
return HTTPError(403, 'Input the error code? %s' % (redeem_code))
except:
logging.error('[SQL Server Error] %s - %s' % (sys.exc_info()[0], log_time))
return HTTPError(599, 'Server is busy.')
except:
logging.error('[Server Error] %s - %s' % (sys.exc_info()[0], log_time))
return HTTPError(599, 'Server is busy.')
