Europython 2008: DataPortability and Python

DataPortabilityand Python

Christian Scholz

http://mrtopf.de

twitter.com/mrtopf

http://comlounge.netCOM.lounge

Python

virtual worlds

DataPortabilityhttp://dataportability.org

Video by Michael Picksmashcut-media.com

Policy

Technology

the ingredients

http://openid.com

Single-Sign-On

http://openidenabled.com

?http://mrtopf.myopenid.com

X-XRDS-Location: http://mrtopf.myopenid.com/xrds

<?xml version="1.0" encoding="UTF-8"?><xrds:XRDS xmlns:xrds="xri://$xrds" xmlns:openid="http://openid.net/xmlns/1.0" xmlns="xri://$xrd*($v*2.0)"> <XRD>

<Service priority="0"> <Type>http://specs.openid.net/auth/2.0/signon</Type> <Type>http://openid.net/sreg/1.0</Type> <Type>http://openid.net/extensions/sreg/1.1</Type> <Type>http://schemas.openid.net/pape/policies/2007/06/phishing-resistant</Type> <Type>http://openid.net/srv/ax/1.0</Type> <URI>http://www.myopenid.com/server</URI> <LocalID>http://mrtopf.myopenid.com/</LocalID> </Service> <Service priority="1"> <Type>http://openid.net/signon/1.1</Type> <Type>http://openid.net/sreg/1.0</Type> <Type>http://openid.net/extensions/sreg/1.1</Type> <Type>http://schemas.openid.net/pape/policies/2007/06/phishing-resistant</Type> <Type>http://openid.net/srv/ax/1.0</Type> <URI>http://www.myopenid.com/server</URI> <openid:Delegate>http://mrtopf.myopenid.com/</openid:Delegate> </Service> <Service priority="2"> <Type>http://openid.net/signon/1.0</Type> <Type>http://openid.net/sreg/1.0</Type> <Type>http://openid.net/extensions/sreg/1.1</Type> <Type>http://schemas.openid.net/pape/policies/2007/06/phishing-resistant</Type> <Type>http://openid.net/srv/ax/1.0</Type> <URI>http://www.myopenid.com/server</URI> <openid:Delegate>http://mrtopf.myopenid.com/</openid:Delegate> </Service> </XRD></xrds:XRDS>

X-XRDS-Location: http://mrtopf.myopenid.com/xrds

<Service priority="0"> <Type>http://specs.openid.net/auth/2.0/signon</Type> <Type>http://openid.net/sreg/1.0</Type> <Type>http://openid.net/extensions/sreg/1.1</Type> <Type>http://schemas.openid.net/pape/policies/2007/06/phishing-resistant </Type> <Type>http://openid.net/srv/ax/1.0</Type> <URI>http://www.myopenid.com/server</URI> <LocalID>http://mrtopf.myopenid.com/</LocalID></Service>

XRDSeXtensible Resource Descriptor Sequence

http://oauth.net

Authorization

Service A Service B

Redirect Redirect

Service A Service B

Redirect Redirect

http://oauth.net/code

OAuth Discoveryhttp://oauth.net/discovery/

XRDS-Simplehttp://xrds-simple.net

The discovery protocol provides a way for Consumers to receive

the required configuration data from Service Providers in a

machine-readable format. It creates an extendable framework

for communicating current and future services.

http://foaf-project.org

Friend of a FriendFOAF

foaf:Person

„Christian Scholz“

foaf:name

„male“

foaf:gender

foaf:Person

foaf:name

„male“

foaf:gender

foaf:Person

„Mary“

foaf:name

foaf:Person

foaf:name

„male“

foaf:gender

foaf:knows

foaf:Person

„Mary“

foaf:name

<rdf:RDF

xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"

xmlns:foaf="http://xmlns.com/foaf/0.1/">

<foaf:Person rdf:ID="me"> <foaf:name>Christian Scholz</foaf:name>

<foaf:knows>

<foaf:Person> <foaf:name>Mary</foaf:name>

</foaf:Person>

</foaf:knows> </foaf:Person>

</rdf:RDF>

RDFResource Description Framework

http://rdflib.net/

http://microformats.org

Example: XHTML Friends Network (XFN)

Christian Marymet,friend

http://mrtopf.de http://mary.com

Christian Christianme

http://mrtopf.de http://seesmic.com/mrtopf

Christian Christianme

http://mrtopf.de http://seesmic.com/mrtopf

<a href=“http://seesmic.com/mrtopf“ rel=“me“>Video</a>

<DIV class="intro vcard" style=""> <A class="url uid" href="/mrtopf/"> <IMG class="user photo" src="2278_large.jpg"/> </A> <H1 class="fn nickname">Christian S.</H1> <P class="description adr">36-year-old gentleman from

<SPAN class="locality">Aachen, Germany</SPAN><SPAN class="country-name">DE</SPAN>

</P> <P class="description note">

Tao Takashi in Second Lifemrtopf on the internet, IRC, TwitterPython/Zope/Plone programmer

</P></DIV>

Example: hCard (VCard)

<DIV class="intro vcard" style=""> <A class="url uid" href="/mrtopf/"> <IMG class="user photo" src="2278_large.jpg"/> </A> <H1 class="fn nickname">Christian S.</H1> <P class="description adr">36-year-old gentleman from

<SPAN class="locality">Aachen, Germany</SPAN><SPAN class="country-name">DE</SPAN>

</P> <P class="description note">

Tao Takashi in Second Lifemrtopf on the internet, IRC, TwitterPython/Zope/Plone programmer

</P></DIV>

in Python

Almost Universal Microformats Parserhttp://code.google.com/p/aump/

pydataportabilityhttp://pydataportability.net/

whereare my

services

Service Catalogue

http://xrds-simple.net

<Type>xri://$xrds*simple</Type>

<Service priority="10"> <Type>http://specs.example.com/wish_list/1.0</Type> <URI simple:httpMethod="GET">http://books.example.com/wishlist</URI> <LocalID>jane</LocalID> </Service>

<Service priority="20"> <Type>http://specs.example.com/wish_list/1.0</Type> <URI simple:httpMethod="GET" priority="10">https://dvds.example.org/lists/wishes</URI> <URI simple:httpMethod="GET" priority="20">http://dvds.example.org/lists/wishes</URI> <LocalID>janedoe</LocalID> </Service>

</XRD></XRDS>

<Type>http://specs.example.com/wish_list/1.0</Type>

http://books.example.com/wishlist</URI>

</Service>

Weaving itall together!

Access

Discovery

Access

Discovery

Conversion

from pydataportability.microformats.base.interfaces

from pydataportability.microformats.base.interfaces import IHTMLParser

parser = getUtility(IHTMLParser,name="beautifulsoup")()

parser = getUtility(IHTMLParser,name="beautifulsoup")()mf = parser.fromURL("http://twitter.com/mrtopf")

parser = getUtility(IHTMLParser,name="beautifulsoup")()mf = parser.fromURL("http://twitter.com/mrtopf")mf.parse()

for name,result in mf.microformats.items():

for name,result in mf.microformats.items():print "Parser: %s" %name

for r in result:

for r in result: print r

Parser: xfnXFN Relationships for http://mrtopf.de/connect: meXFN Relationships for http://twitter.com/jack: contactXFN Relationships for http://twitter.com/biz: contact...

Parser: hcardVCard for Christian Scholz (fn=Christian Scholz)VCard for None (fn=None, url=http://twitter.com/jack) VCard for None (fn=None, url=http://twitter.com/biz) ...

</XRD></XRDS>

from pydataportability.xrds.parser import XRDSParser

fp = urllib2.urlopen(url)

fp = urllib2.urlopen(url)p = XRDSParser(fp)

for s in p.services:

for s in p.services:print "Type:",s.type

for s in p.services:print "Type:",s.typeprint "Prio:",s.priority

for s in p.services:print "Type:",s.typeprint "Prio:",s.priorityprint "LocalID:",s.localid

for s in p.services:print "Type:",s.typeprint "Prio:",s.priorityprint "LocalID:",s.localid for uri in s.uris:

for s in p.services:print "Type:",s.typeprint "Prio:",s.priorityprint "LocalID:",s.localid for uri in s.uris: print " ",uri.uri

Type: http://specs.example.com/wish_list/1.0Prio: 10LocalID: jane http://books.example.com/wishlist

Type: http://specs.example.com/wish_list/1.0Prio: 20LocalID: janedoe https://dvds.example.org/lists/wishes http://dvds.example.org/lists/wishes

meta/header

from pydataportability.discovery import discover

from pydataportability.discovery import discoverservices = discover('http://twitter.com/mrtopf')

>>> len(services)

>>> len(services)3

>>> services

>>> len(services)3

>>> services[<Service type 'xfn'>, <Service type 'hcard'>, <Service type 'hcard'>]

>>> len(services)3

>>> services[0].service_type

>>> len(services)3

>>> services[0].service_type'http://gmpg.org/xfn/11'

>>> len(services)3

>>> services['http://gmpg.org/xfn/11']

>>> len(services)3

>>> services['http://gmpg.org/xfn/11'][<Service type 'xfn'>]

>>> len(services)3

>>> services[0].payload

>>> len(services)3

>>> services[0].payload[<XFNRelationships at ...>, ...]

>>> len(services)3

>>> services[2].loaded

>>> len(services)3

>>> services[2].loadedFalse

>>> len(services)3

>>> services[2].loadedFalse

>>> services[2].load()

http://pydataportability.net

Zope Component Architecture

Zope Component ArchitecturePython Eggs

Zope Component ArchitecturePython Eggsbuildout

status?

supports hCard/XFN

status?

supports hCard/XFN

supports XRDS

status?

supports hCard/XFN

supports XRDS

supports service discovery

Christian Scholzcs@comlounge.net

Christian Scholz

thanks!cs@comlounge.net

Europython 2008: DataPortability and Python

Technology

Transcript of Europython 2008: DataPortability and Python

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