def generate_access_token(user_name):
"""
根据用户名，产生新的访问token，并保持相关的访问key到数据访问层
:param user_name: 用户名
:return:字符串
"""
# 产生新access_token
new_access_token = key_maker.mk_access_token()
token_user_key = key_maker.mk_token_username_key(new_access_token)
session_tcp = ServiceMgrCacher().get_connection(US_SESSION_DA, RT_HASH_RING, token_user_key)
# 删除以前的access_token
user_token_key = key_maker.mk_username_token_key(user_name)
user_session_info = user_session_select(session_tcp, [user_token_key])
if user_session_info:
old_access_token = user_session_info[user_token_key]
if old_access_token:
user_session_delete(session_tcp, [key_maker.mk_token_username_key(old_access_token)])
# 存储新的access_token
params = {token_user_key: [user_name, setting.ACCESS_TOKEN_EXPIRE],
user_token_key: [new_access_token]}
user_session_insert(session_tcp, params)
return new_access_token
def check_expire_access_token(access_token):
"""
check access token whether is validate; if it is, reset it's expire time
:param access_token:
:return:
"""
token_user_key = key_maker.mk_token_username_key(access_token)
session_tcp = ServiceMgrCacher().get_connection(US_SESSION_DA, RT_HASH_RING, token_user_key)
result = user_session_select(session_tcp, [token_user_key])
validate = True if result[token_user_key] else False
if validate:
# reset expire time
params = {token_user_key: setting.ACCESS_TOKEN_EXPIRE}
user_session_expire(session_tcp, params)
return validate
