This is a pre-production deployment of Warehouse. Changes made here affect the production instance of PyPI (pypi.python.org).
Help us improve Python packaging - Donate today!
Project Description

This is a repoze.who IAuthenticator/IMetadataProvider plugin that can cache the results of other plugins using memcached. It’s useful for reducing load on e.g. a backend LDAP auth system.

To use it, give it the name of an authenticator and/or metadata provider whose results it should wrap:

[plugin:ldap]
use = my.ldap.authenticator

[plugin:cached_ldap]
use = repoze.who.plugins.memcached
authenticator_name = ldap

[authenticators]
plugins = cached_ldap ldap;unused

(The “ldap;unused” bit ensures that the wrapped ldap plugin still gets loaded, but is not used for matching any requests. Yeah, it’s yuck.)

To prevent a compromise of the cache from revealing auth credentials, this plugin calculates a HMAC hash of the items in the incoming identity and uses that as the cache key. This makes it possible to check the cache for a match to an incoming identity, while preventing the cache keys from being reversed back into a valid identity.

Items added to the identity by the wrapped plugin will be stored in the cached value and will not be encryped or obfuscated in any way.

The following configuration options are available:

  • memcached_urls: A list of URLs for the underlying memcached store.
  • authenticator_name: The name of an IAuthenticator plugin to wrap.
  • mdprovider_name: The name of an IMetadataProvider plugin to wrap.
  • key_items: A list of names from the identity dict that should be
    hashed to produce the cache key. These items should uniquely and validly identity a user. By default it will use all keys in the identity in sorted order.
  • value_items: A list of names from the identity dict that should be
    stored in the cache. These would typically be items of metadata such as the user’s email address. By default this will include all items that the wrapped plugin adds to the identity.
  • secret: A string used when calculating the HMAC the cache keys.
    All servers accessing a shared cache should use the same secret so they produce the same set of cache keys.
  • ttl: The time for which cache entries should persist, in seconds.

0.1.1 - 2012-01-30

  • Update license to MPL 2.0

0.1.0 - 2011-12-01

  • Initial release.
Release History

Release History

0.1.1

This version

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

0.1.0

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Show More

Download Files

Download Files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
repoze.who.plugins.memcached-0.1.1.tar.gz (7.7 kB) Copy SHA256 Checksum SHA256 Source Jan 30, 2012

Supported By

WebFaction WebFaction Technical Writing Elastic Elastic Search Pingdom Pingdom Monitoring Dyn Dyn DNS Sentry Sentry Error Logging CloudAMQP CloudAMQP RabbitMQ Heroku Heroku PaaS Kabu Creative Kabu Creative UX & Design Fastly Fastly CDN DigiCert DigiCert EV Certificate Rackspace Rackspace Cloud Servers DreamHost DreamHost Log Hosting