Web Services for Remote Portlets WSRP Overview

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Web Services for Remote Portlets (WSRP) Overview

• OASIS WSRP Technical Commitee
• September, 2003

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Overview

• Web Services for Remote Portlets (WSRP) has
  defineda standard for interactive,
  presentation-oriented web services.
• WSRP defines
• A WSDL interface description for invocation of
  WSRP services
• Semantics for interacting with WSRP services that
  can not be expressed in WSDL.
• Markup fragment rules for markup emitted by WSRP
  services
• Companies involved with WSRP
• BEA, Bowstreet, Citrix, Commerce One, Computer
  Associates, CrossWeave, Divine, Drake Certivo,
  Factiva, France Telecom, Fujitsu, Gluecode, HP,
  IBM, Interwoven, Kinzan, Lexis-Nexis, Lotus,
  MacDonald Bradley, Microsoft, Moravia IT,
  Netegrity, Novell, Oracle, Peoplesoft,
  Perficient, Plumtree, Reed Elsevier, SAP,
  SeeBeyond, Silverstream, Stellent, Sun
  Microsystems, Sybase, Tibco , Vignette, WebCollage

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WSRP Services PlugPlay with Portals
Registry
Find
Publish
Portals
Portals
Clients
Portals
Clients
WSRP Services
Portals
Portals
WSRP Services
Portals
Portals
WSRP Services
Web Clients
Web Clients
Web Clients
Web Clients
Portals
Web Clients
Portals
Web Clients
Bind
Portals
Web Clients
Portals
Web Clients
Portals
Web Clients
Web Clients
e.g.
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WSRP Goals

• Enable interactive, presentation-oriented web
  services to be easily plugged into
  standards-compliant portals
• Ensure concepts and data exchanged are aligned
  with other standards in both the portal and web
  service arenas.
• Make the Internet a marketplace of visual web
  services, ready to be integrated into portals

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Scenario Use of WSRP in Portals
WSRP Consumer
WSRP Producer
WSRP Service
Portal
WSRP Service
WSRP Service
Aggregated HTML, WML, VoiceXML, ... over HTTP
Mark-Up Fragments Transferred via SOAP

• Portals can aggregate presentation from many WSRP
  services
• WSRP services can be aware of portal context
• User profile from portal
• Desired locale and markup-type
• Active user agent

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Scenario Portal sharing Portlets
WSRP Consumer
WSRP Producer
Portals
Server Portal
Portlet
WSRP Interface
Portals
Portals
Portal
Portlet
Portlet
Huge number of users
Portals as Intermediaries, Caching offloads
requests from WSRP Producer
Publishing Portal

• Users of the second portal (WSRP Consumer) can
  select remote portlets like any local portlet and
  put them on their pages
• In this case, the portal providing a portlet as a
  WSRP service adheres to the WSRP protocol and
  contracts just like any other WSRP Producer
  service

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Scenario Use of WSRP in Client Apps
WSRP Consumer
WSRP Producer
WSRP Service
Application (e.g. Word, Outlook, ...)
WSRP Service
WSRP Service
User Info, Actions, Markup Fragments Transferred
via SOAP
Rendering within client applications view

• Applications may embed WSRP Services through
  plugin mechanisms, e.g. COM Components or ActiveX
  Controls
• In this case, the plugin in the client
  application adheres to the WSRP protocol and
  contracts as a WSRP Consumer

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Abstract Portal ? WSRP Interaction
WSRP Producer (Service)
User
WSRP Consumer (Portal)
Adds Portlet
Clone Portlet
I
I
Allocate new clone
View Portlet
Get Portlet Markup
A
I
S
I
I
Generate Markup, (opt create Session)
S
A
Click Action
Perform Portlet Action
I
A
I
A
I
S
A
S
Action Handling (opt create Session)
Removes Portlet
Destroy Portlet clone
I
I
I
Destroy clone
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WSRP and related Standards
(X)HTML
WML
Voice XML
cHTML
...
WSRP
SOAP (Invocation)
WSDL (Description)
UDDI (Publish,FindBind)
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WSRP and Portlet API(s)
Web Services for Remote Portals (WSRP)
Platform Independent Web Service Interface
Java Portlet API (JSR 168)
C Portlet API (.NET)
Platform specific, local Portlet APIs
WSRP Impl. on plain J2EE or .NET platform
. . .
Portlet APIs may be defined for different
programming languages WSRP can bridge between
the different platforms, leveraging platform
independence of Web services Goal Portlets
written to Portlet API(s) can be published as
WSRP services
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WSRP TC Areas of Work

• Business Scenarios
• WSRP Interfaces Protocol
• WSRP Markup Fragments Rules/Styles
• WSRP and Security, Identity, SSO ...
• WSRP Interoperability
• WSRP Conformance
• WSRP Publish, Find, Bind Metadata (not in v1.0)
• WSRP Coordination (not in v1.0)

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Business Scenarios

• Content/Application Provider providing WSRP
  Service
• Portal publishing Portlets as WSRP Services
• Syndicated Content / Billing via WSRP
• Enterprise Application
• Current Awareness
• Cooperating WSRP Services
• Multimedia Sports Portal / Mobility

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WSRP Interfaces Protocol

• Define the operations for WSRP services
• Life-cycle operations, e.g. clone a portlet for
  customization
• Advanced operations for processing
  actions/getting markup
• User profile information contained in requests
• User agent information contained in requests
• Locale information contained in requests
• Protocol defining interaction between consumer
  and service
• Allowed order of operation invocation
• Caching considerations

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WSRP Markup Fragments Rules/Styles

• Define valid markup fragments for
• HTML / XHTML (in v1.0)
• WML, cHTML, VoiceXML (targetted for v1.1)
• Define URL rewriting
• Define namespacing/prefixing

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WSRP and Security, Identity, SSO ...

• Define how security mechanisms and protocols can
  be employed with WSRP
• Define how Identity is to be provided by
  Consumers to Producers

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WSRP Interoperability

• Provide forum for discussion of issues
  encountered when vendors test interoperability of
  their implementations.
• Provide feedback to the WSRP Technical Committee
  of issues encountered and clarifications that
  would be useful to the specification.

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WSRP Conformance

• Define Use Profiles for implementing various sets
  of optional features. Use marketplace realities
  to drive number and type of use profiles.
• Define the set of test cases required by the
  conformance language of the specification or the
  functionality of the use profiles.
• Define test suites for conforming to the
  specification and the use profiles.

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WSRP Publish, Find, Bind Metadata

• Define method used to publish services to
  directories
• Metadata to be provided when publishing service
• Name, Titles, Descriptions
• Supported Markups / Locales
• Hints for caching
• ...
• Provide concrete mappings for various publishing
  mechanisms
• UDDI in progress
• ebXML Registry/Repository if there is
  sufficient interest
• WSIL if there is sufficient interest

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Planned WSRP Milestones

• September 2003 WSRP Specification 1.0 approved
  as an OASIS standard
• December 2003 Determine content of WSRP v1.1
• May 2004 WSRP Specification 1.1 approved as
  an OASIS standard
• September 2004 Determine content of WSRP v2.0