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| import tornado.ioloop | |
| import tornado.web | |
| import json | |
| # Creates a user | |
| class UserObject: | |
| def __init__(self, name, username, password): | |
| self.user = username | |
| self.passwd = password | |
| self.name = name | |
| # instead of creating a big json object | |
| # create a class and it will make it for you | |
| # repetitve task | |
| def create_user(self): | |
| return dict(username=self.user, password=self.passwd, name=self.name) | |
| # Need this for cross origin stuff | |
| class BaseHandler(tornado.web.RequestHandler): | |
| def set_default_headers(self): | |
| print("setting headers!!!") | |
| self.set_header("Access-Control-Allow-Origin", "*") | |
| self.set_header("Access-Control-Allow-Headers", "x-requested-with") | |
| self.set_header('Access-Control-Allow-Methods', 'POST, GET, OPTIONS') | |
| # default action if no get is there for a route. | |
| def get(self): | |
| self.write('some get') | |
| # What happens @ / or the main page | |
| class MainHandler(BaseHandler): | |
| def get(self): | |
| self.write("\n\t/users : get all users\n\t /login: login") | |
| # dumps all the users this is a `GET` | |
| class GetUsers(BaseHandler): | |
| def get(self): | |
| self.write(json.dumps(list_of_all_users)) | |
| # validates from hard coded users | |
| # if username and password are correct it returns the userinfo | |
| class Login(BaseHandler): | |
| def post(self): | |
| args = json.loads(self.request.body) | |
| try: | |
| for user in list_of_all_users['users']: | |
| if args['user'] == user['username'] and args['passwd'] == user['password']: | |
| self.write(user) | |
| except: | |
| self.write(dict(error="user not found, please check your credentials")) | |
| def make_app(): | |
| # tie the functions with the route | |
| return tornado.web.Application([ | |
| (r"/", MainHandler), | |
| (r"/users", GetUsers), | |
| (r"/login", Login), | |
| ]) | |
| if __name__ == "__main__": | |
| # create users start | |
| big_bro = UserObject(name="Paramjit", username="pj123", password="123").create_user() | |
| me = UserObject(name="Jasmit", username="jt123", password="123").create_user() | |
| # creat users end | |
| list_of_all_users = dict(users=[big_bro, me]) # group users in a json object | |
| app = make_app() # start the server | |
| app.listen(8888) # uses port 8888 | |
| # tries to start the server | |
| try: | |
| tornado.ioloop.IOLoop.current().start() | |
| # if something is wrong or ctrl + c is pressed it stops | |
| except: | |
| tornado.ioloop.IOLoop.current().stop() |
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