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django-throttling-0.0.1
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مشاهده بیشترتوضیحات
Basic throttling app for Django
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | django-throttling-0.0.1 |
| نام | django-throttling |
| نسخه کتابخانه | 0.0.1 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Igor |
| ایمیل نویسنده | lilo.panic@gmail.com |
| آدرس صفحه اصلی | http://github.com/night-crawler/django-throttling |
| آدرس اینترنتی | https://pypi.org/project/django-throttling/ |
| مجوز | MIT |
``django-throttling`` is a an attempt at creating a simple app that allows to apply
frequency limits to user's requests.
Features
========
* per-view maintenance mode
* per-view timeouts
* view disabling
* timeouts are configured with respect to ``request.method``
* redirects
* custom congestion views
* view timeouts support callbacks
Requirements
============
* django cache
Installation
============
Download ``django-throttling`` using *one* of the following methods:
pip
---
pip install django-throttling
Checkout from GitHub
--------------------
Use one of the following commands::
git clone http://github.com/night-crawler/django-throttling.git
Configuration
=============
Add 'django_throttling' into ``INSTALLED_APPS`` in
``settings.py``::
INSTALLED_APPS = (
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
...
'django_throttling',
...
)
MIDDLEWARE
----------
Add ``django_throttling.middleware.ThrottleMiddleware`` to your
``MIDDLEWARE_CLASSES`` in ``settings.py``. You may need 'request.user'
or 'request.session', etc., so insert it in a right place according to
your needs.
SETTINGS
--------
* ``DJANGO_THROTTLING_ENABLED``: enables 'django-throttling'. Default is ``False``.
* ``DJANGO_THROTTLING_CACHE_EXPIRE``: how long should we keep last_access time.
If you set a large timeout for view, i.e. 24h, make sure that
``DJANGO_THROTTLING_CACHE_EXPIRE`` is not less than your timeout.
Default is ``60*60``
* ``DJANGO_THROTTLING_CACHE_PREFIX``: a cache prefix for keys. Default is
``THROTTLING``
* ``THROTTLING_CACHE_KEY_PATTERNS``: a dict with patterns for building the cache
keys. May be redefined in app settings. Defaults are:
* ``view_method``: cache key pattern for a view with a method specified.
Default pattern: ``%(prefix)s:%(view)s:%(uid)s:%(ip)s:%(method)s``
* ``view``: cache key pattern for a view. Default pattern:
``%(prefix)s:%(view)s:%(uid)s:%(ip)s``
* ``site_method``: cache key pattern for a whole site with a method.
Default pattern: ``%(prefix)s:%(uid)s:%(ip)s:%(method)s``
* ``site``: a global pattern. Default: ``%(prefix)s:%(uid)s:%(ip)s``
* ``DJANGO_THROTTLING_IGNORE_ADMINS``: ignore throttling if user is admin.
Default is ``True``.
* ``DJANGO_THROTTLING``: a dict with app-path keys that configures the limits.
I.e.:
``{'django.contrib.admin.options.change_view': {'all': 50, 'post': 5000}}``
See Usage. For more.
Usage
=====
Global fall-backs
-----------------
Fall-back timeouts setup for any request at the current site::
DJANGO_THROTTLING = {
'all': 1000,
'post': 10000,
'congestion': 'forum.views.congestion',
}
That stands for "one request per second, one POST request per 10s".
``congestion`` is a view called after the throttle check, if it failes.
It may be a ``uri``, i.e. ``/forum/congestion/``. Must uri start with '/'.
The simplest congestion view may look like::
def congestion(request, congestion_bundle):
user = request.user
progress = int(float(congestion_bundle['delta']) / congestion_bundle['timeout'] * 100)
c = Context({'user': user, 'congestion_bundle': congestion_bundle, 'progress': progress})
return render_to_response(get_theme_template(user, 'congestion.html'), c,
context_instance=RequestContext(request)
)
``congestion_bundle`` is a dict, populated from a ``process_request()``::
congestion_bundle = {
'view_func': self.view_func,
'view_args': self.view_args,
'view_kwargs': self.view_kwargs,
'timeout': timeout,
'delta': delta,
}
You may disable all ``POST``'s on your site ('maintenance mode')::
DJANGO_THROTTLING = {
'all': 1000,
'post': False,
'congestion': 'forum.views.congestion',
}
In that case you will get `HttpResponseBadRequest()` on any POST.
Also, you may redirect your's `POST` users to an any page::
DJANGO_THROTTLING = {
'all': 1000,
'post': '/',
'congestion': 'forum.views.congestion',
}
or you can use a custom maintenance view for it::
DJANGO_THROTTLING = {
'all': 1000,
'post': 'forum.views.maintenance',
'congestion': 'forum.views.congestion',
}
Maintenance view may look like::
def maintenance(request, maintenance_bundle):
return HttpPreResponse(maintenance_bundle)
If you need a special cache key builder, or just to set a timeout is not enough
for you, you can use a callback for, i.e., `POST`, that have to make it's
checks and return a tuple of cache key and one of the supported timeout types::
DJANGO_THROTTLING = {
'all': 1000,
'post': 'callable:helpers.trash.my_callback',
'congestion': 'forum.views.congestion',
}
And here's the example callback::
def my_callback(request, view_func, view_args, view_kwargs):
return 'some_strange_key_123', 10000
The full set of arguments the original view had is provided.
And don't forget, that it is a *fallback* section, that used *ONLY* if
you have no detailed rule for view throttling.
Per-view throttling
-------------------
Per-view throttling is almost the same::
DJANGO_THROTTLING = {
'all': 1000,
'post': 'callable:helpers.trash.my_callback',
'congestion': 'forum.views.congestion',
'django.contrib.admin.options.change_view': {
'post': False,
'all': 0,
'uri': '/admin/forum/post/23/',
# 'post': 'callable:helpers.trash.my_callback',
# 'all': 4000,
},
}
First, it will disable all limits for `django.contrib.admin.options.change_view`.
Then, it will disable the ``POST`` method for this view, **ONLY** if the
``request.path`` starts with '/admin/forum/post/23/'. Other options from
global setup are permitted.
نحوه نصب
نصب پکیج whl django-throttling-0.0.1:
pip install django-throttling-0.0.1.whl
نصب پکیج tar.gz django-throttling-0.0.1:
pip install django-throttling-0.0.1.tar.gz