Package: pydataportability.discovery
Introductionpydataportability.discoveryis a component for discovering resource description
documents. These areXRD documentsdescribing
a resource and optionally pointing to related resources. One use case is thewebfinger projectwhere XRD is used to store
information about a user. The URI identifying the user is e.g.acct:user@example.comand this discovery component is able to retrieve information about the user viaLRDD.InstallationThe easiest way to install it is viaeasy_install:easy_install pydataportability.discoveryIt is recommended to do this inside avirtualenvSimple usageAfter installing you will have 2 new commands in your path (or virtualenv’sbin/directory):discoverandwebfinger. These are just example scripts though. Both do discovery
on the URI you feed in but the latter will check for webfinger-relationships only and will
additionally check if you passed in a user identifier starting withacct:which is the
proposed scheme of the webfinger protocol. If you didn’t, it’s adding it for you.Here is an example:$ webfinger someuser@googlemail.com

Subject:  acct:someuser@googlemail.com

Rels:  ['http://portablecontacts.net/spec/1.0']
URIs: ['http://www-opensocial.googleusercontent.com/api/people/']
Media Types: []
Prio: 0
Templates: []So this mainly prints the contents of the discovered XRD document. Note that the
user you are testing it with needs to enable this at Google. Check out thewebfinger homepageandmailing listfor more information.DocumentationYou can find the documentation for this component athttp://dataportability.netWarningNote that the XRD specification and the webfinger protocol are under heavy
development and likely to change.LicenseThis project is released under a BSD license:Copyright (c) 2009, Christian Scholz
All rights reserved.Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
following conditions are met:Redistributions of source code must retain the above copyright notice, this list of conditions and the following
disclaimer.Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided with the distribution.Neither the name of the author nor the names of its contributors may be used to endorse or promote products derived from
this software without specific prior written permission.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.Changelog0.4 - 12 Oct 2009Initial release