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Diffstat (limited to 'pyaggr3g470r/views/api/common.py')
| -rw-r--r-- | pyaggr3g470r/views/api/common.py | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/pyaggr3g470r/views/api/common.py b/pyaggr3g470r/views/api/common.py deleted file mode 100644 index 6da93a3b..00000000 --- a/pyaggr3g470r/views/api/common.py +++ /dev/null @@ -1,245 +0,0 @@ -#! /usr/bin/env python -# -*- coding: utf-8 - - -"""For a given resources, classes in the module intend to create the following -routes : - GET resource/<id> - -> to retrieve one - POST resource - -> to create one - PUT resource/<id> - -> to update one - DELETE resource/<id> - -> to delete one - - GET resources - -> to retrieve several - POST resources - -> to create several - PUT resources - -> to update several - DELETE resources - -> to delete several -""" -import ast -import json -import logging -import dateutil.parser -from functools import wraps -from werkzeug.exceptions import Unauthorized, BadRequest -from flask import request, g, session, Response -from flask.ext.restful import Resource, reqparse - -from pyaggr3g470r.lib.utils import default_handler -from pyaggr3g470r.models import User - -logger = logging.getLogger(__name__) - - -def authenticate(func): - """ - Decorator for the authentication to the web services. - """ - @wraps(func) - def wrapper(*args, **kwargs): - logged_in = False - if not getattr(func, 'authenticated', True): - logged_in = True - # authentication based on the session (already logged on the site) - elif 'email' in session or g.user.is_authenticated: - logged_in = True - else: - # authentication via HTTP only - auth = request.authorization - if auth is not None: - user = User.query.filter( - User.nickname == auth.username).first() - if user and user.check_password(auth.password) \ - and user.activation_key == "": - g.user = user - logged_in = True - if logged_in: - return func(*args, **kwargs) - raise Unauthorized({'WWWAuthenticate': 'Basic realm="Login Required"'}) - return wrapper - - -def to_response(func): - """Will cast results of func as a result, and try to extract - a status_code for the Response object""" - def wrapper(*args, **kwargs): - status_code = 200 - result = func(*args, **kwargs) - if isinstance(result, Response): - return result - elif isinstance(result, tuple): - result, status_code = result - return Response(json.dumps(result, default=default_handler), - status=status_code) - return wrapper - - -class PyAggAbstractResource(Resource): - method_decorators = [authenticate, to_response] - attrs = {} - to_date = [] # list of fields to cast to datetime - - def __init__(self, *args, **kwargs): - super(PyAggAbstractResource, self).__init__(*args, **kwargs) - - @property - def controller(self): - return self.controller_cls(getattr(g.user, 'id', None)) - - @property - def wider_controller(self): - if g.user.is_admin(): - return self.controller_cls() - return self.controller_cls(getattr(g.user, 'id', None)) - - def reqparse_args(self, req=None, strict=False, default=True, args=None): - """ - strict: bool - if True will throw 400 error if args are defined and not in request - default: bool - if True, won't return defaults - args: dict - the args to parse, if None, self.attrs will be used - """ - parser = reqparse.RequestParser() - for attr_name, attrs in (args or self.attrs).items(): - if attrs.pop('force_default', False): - parser.add_argument(attr_name, location='json', **attrs) - elif not default and (not request.json - or request.json and attr_name not in request.json): - continue - else: - parser.add_argument(attr_name, location='json', **attrs) - parsed = parser.parse_args(strict=strict) if req is None \ - else parser.parse_args(req, strict=strict) - for field in self.to_date: - if parsed.get(field): - try: - parsed[field] = dateutil.parser.parse(parsed[field]) - except Exception: - logger.exception('failed to parse %r', parsed[field]) - return parsed - - -class PyAggResourceNew(PyAggAbstractResource): - - def post(self): - """Create a single new object""" - return self.controller.create(**self.reqparse_args()), 201 - - -class PyAggResourceExisting(PyAggAbstractResource): - - def get(self, obj_id=None): - """Retreive a single object""" - return self.controller.get(id=obj_id) - - def put(self, obj_id=None): - """update an object, new attrs should be passed in the payload""" - args = self.reqparse_args(default=False) - new_values = {key: args[key] for key in - set(args).intersection(self.attrs)} - if 'user_id' in new_values and g.user.is_admin(): - controller = self.wider_controller - else: - controller = self.controller - return controller.update({'id': obj_id}, new_values), 200 - - def delete(self, obj_id=None): - """delete a object""" - self.controller.delete(obj_id) - return None, 204 - - -class PyAggResourceMulti(PyAggAbstractResource): - - def get(self): - """retrieve several objects. filters can be set in the payload on the - different fields of the object, and a limit can be set in there as well - """ - try: - limit = request.json.pop('limit', 10) - order_by = request.json.pop('order_by', None) - query = self.controller.read(**request.json) - except: - args = {} - for k, v in request.args.items(): - if k in self.attrs.keys(): - if self.attrs[k]['type'] in [bool, int]: - args[k] = ast.literal_eval(v) - else: - args[k] = v - limit = request.args.get('limit', 10) - order_by = request.args.get('order_by', None) - query = self.controller.read(**args) - if order_by: - query = query.order_by(order_by) - if limit: - query = query.limit(limit) - return [res for res in query] - - def post(self): - """creating several objects. payload should be a list of dict. - """ - if 'application/json' not in request.headers.get('Content-Type'): - raise BadRequest("Content-Type must be application/json") - status = 201 - results = [] - for attrs in request.json: - try: - results.append(self.controller.create(**attrs).id) - except Exception as error: - status = 206 - results.append(str(error)) - # if no operation succeded, it's not partial anymore, returning err 500 - if status == 206 and results.count('ok') == 0: - status = 500 - return results, status - - def put(self): - """creating several objects. payload should be: - >>> payload - [[obj_id1, {attr1: val1, attr2: val2}] - [obj_id2, {attr1: val1, attr2: val2}]] - """ - if 'application/json' not in request.headers.get('Content-Type'): - raise BadRequest("Content-Type must be application/json") - status = 200 - results = [] - for obj_id, attrs in request.json: - try: - new_values = {key: attrs[key] for key in - set(attrs).intersection(self.attrs)} - self.controller.update({'id': obj_id}, new_values) - results.append('ok') - except Exception as error: - status = 206 - results.append(str(error)) - # if no operation succeded, it's not partial anymore, returning err 500 - if status == 206 and results.count('ok') == 0: - status = 500 - return results, status - - def delete(self): - """will delete several objects, - a list of their ids should be in the payload""" - if 'application/json' not in request.headers.get('Content-Type'): - raise BadRequest("Content-Type must be application/json") - status = 204 - results = [] - for obj_id in request.json: - try: - self.controller.delete(obj_id) - results.append('ok') - except Exception as error: - status = 206 - results.append(error) - # if no operation succeded, it's not partial anymore, returning err 500 - if status == 206 and results.count('ok') == 0: - status = 500 - return results, status |