Recommended
Recommended
More Related Content
What's hot
What's hot (15)
Similar to Leveraging Sakai and LTI to Standardize Integrations
Similar to Leveraging Sakai and LTI to Standardize Integrations (20)
Recently uploaded
Recently uploaded (20)
Leveraging Sakai and LTI to Standardize Integrations
- 1. Leveraging Sakai and IMS LTI to Standardize Integrations Presented By Gary Gilbert, Unicon Fred Tibbitts, Pearson Education July 9, 2009 Pearson Copyright 2009
- 2. Overview • The Challenge • Pearson Education’s Solution • Leveraging LTI • Sakai as Reference Implementation • Demo • Q & A Pearson Copyright 2009
- 3. The Challenge Pearson Copyright 2009
- 4. The Challenge • Custom integration solutions – Usability – Reinvented for each LMS / learning application – Brittle – Minimal reuse – High cost of ownership – Lack of content portability Pearson Copyright 2009
- 5. What is TPI? • “Third-Party Interoperability” • TPI is a gateway that allows external applications to integrate seamlessly with Pearson applications • External LMS embeds links to TPI in course content • TPI mediates the request before redirecting to the Pearson learning application Pearson Copyright 2009
- 6. TPI’s Main Responsibilities • Handle tool launch (i.e. application linking) requests • Orchestrate enterprise data exchange – Users, courses, enrollments • Seamless SSO Pearson Copyright 2009
- 7. TPI Design Principles • Be flexible – enable partner and Pearson application integrations with minimal effort • Lightweight – don't include or develop components we don't need • Support/leverage industry standards when appropriate • Highly scalable and fault tolerant Pearson Copyright 2009
- 8. TPI Server • Java-based web application • Red Hat Enterprise servers • Oracle RAC • TPI is based largely on open source software Pearson Copyright 2009
- 9. What is IMS LTI? A standard method of integrating learning tools with learning management systems Pearson Copyright 2009
- 10. Why LTI in TPI? • Expand support for standards • Economies of Scale – Single provider for many tools • LTI addresses features such as automated tool deployment Pearson Copyright 2009
- 11. LTI Overview • “Learning Tool Interoperability” • Version 2.0 (Not Final) • Working Group includes: – Pearson Education – Sakai – IBM – Microsoft – Blackboard – Wimba – Others Pearson Copyright 2009
- 12. LTI Objectives • Define a deployment framework • Standardize process for building links • Guarantee secure communication • Provide a tool launch protocol that preserves learning context • Supports content development and distribution Pearson Copyright 2009
- 13. Key Concepts • Tool Consumer • Tool Provider • Tool Profile • Messaging Framework • Link Types Pearson Copyright 2009
- 15. Tool Consumer • Publishes a Tool Consumer Profile • Provides Tool Consumer Runtime • Exposes LTI Services Pearson Copyright 2009
- 16. Tool Consumer Profile • XML descriptor of the Tool Consumer's supported LTI functionality • Read by Tool Provider during deployment Tool Consumer Profile Tool Consumer Vendor Metadata Information Capabilities List List of supported Security Profiles Web Services Pearson Copyright 2009
- 17. Tool Provider • Learning application that runs in a container separate from the LMS • Publishes one or more tools via Tool Profiles – Tool is an HTTP-based application that serves content Pearson Copyright 2009
- 18. Tool Profile • XML descriptor describing how a tool integrates with a Tool Consumer • Delivered to the Tool Consumer during tool deployment Tool Profile Tool Vendor Metadata Information Resource Event Handlers Handlers Menu Outcome Links Handlers Pearson Copyright 2009
- 19. Messaging Framework Pearson Copyright 2009
- 20. Message Types • Tool Deployment Request • Tool Launch Request – Menu view request – Resource view request – Resource create/modify/delete requests • Server-to-Server Pearson Copyright 2009
- 21. Link Types • Menu Links – Rendered in navigational element – Defined in the Tool Profile • Resource Links – Rendered anywhere they are supported by the Tool Consumer Runtime – Authored Pearson Copyright 2009
- 22. Key Interactions • Tool Deployment • Tool Launch • Resource Link Authoring Pearson Copyright 2009
- 23. Tool Deployment • A handshake between the Tool Provider and Tool Consumer where they exchange profiles • Initiated by an administrator on the Tool Consumer side • Uses RegisterTool web service Pearson Copyright 2009
- 24. User Agent Tool Consumer Tool Provider Submit Deployment URL Send HTML Form Auto-submit Post (toolConsumerProfileURL, passwd, returnURL) Get Profile Validate profile Collect information Submit registerTool(ToolProfile, ToolSettings, SecurityContract) Send Redirect
- 25. Tool Launch • Initiated by a user on the Tool Consumer • Tool Consumer Runtime generates HTML Form (POST) that is auto-submitted • POST to appropriate Message Handler on the Tool Provider Pearson Copyright 2009
- 26. <form id="launchRequestForm" name="launchRequestForm" enctype="application/x- www-form-urlencoded" action="http://someserver.com/lti/launch" method="post"> <input name="userId" value="admin" type="hidden"/> <input name="contextId" value="fb2720f7-bc89-4c15-9d11-f959be22835c" d type="hidden"/> Standar <input name="contextType" value="ims/lis/CourseSection" type="hidden"/> <input name="toolInstanceGUID" value="448c77e6-3d01-4f6a-97d2-5316fb472ee4" type="hidden"/> <input name="timestamp" value="1238096397997" type="hidden"/> <input name="mac" value="9sba5G5oEOoAKtJuRLHtzhqtZr0=" type="hidden"/> Security <input name="nonce" value="-2714224520731310511" type="hidden"/> <input name="digest-algorithm" value="HmacSHA1" type="hidden"/> <input name="system_institutionId" value="unicon" type="hidden"/> System <input name="system_partnerId" value="sakai" type="hidden"/> Context <input name="context_book" value="campbell8" type="hidden"/> ce Resour <input name="resource_targetId" value="studyplan" type="hidden"/> <input value="Submit" type="submit"/> </form> Pearson Copyright 2009
- 27. Resource Link Authoring • Initiated by user on the Tool Consumer • Tool Provider provides authoring UI • Uses ResourceLink web service Pearson Copyright 2009
- 28. User Agent Tool Consumer Tool Provider Initiate Link Creation Send HTML Form Post [resource-create] Collect information Submit saveResource Send Redirect Show new resource
- 29. Sakai as Reference Implementation Pearson Copyright 2009
- 30. LTI in Sakai • Tool Consumer • Test harness for TPI Tool Provider • Reference implementation Pearson Copyright 2009
- 31. Sakai Tool Consumer Runtime • New Sakai Tool (lti.tool.consumer) – Reasonable Server Faces • Tool Deployment • Tool Launch – Integration with Sakai Resources Tool • Resource Link Authoring – Heavy use of Entity Providers Pearson Copyright 2009
- 32. Sakai LTI Services • Standard Sakai API / IMPL Model • Spring Web Services – IMS Enterprise Services v1.1 – RegisterTool – ResourceLink – ToolSetting Pearson Copyright 2009
- 33. Sakai LTI Authoring • Pearson Scripted Links – Extension to the LTI spec – Allows direct authoring of links • Requires Melete – Minor changes to Melete to support LTI tool launch via JavaScript Pearson Copyright 2009
- 34. Sakai in LTI – What's left? • Tool Deployment at the System level • Tighter integration with Sakai Resources • You tell us Pearson Copyright 2009
- 36. Q&A Gary Gilbert, Unicon ggilbert@unicon.net Fred Tibbitts, Pearson Education fred.tibbitts@pearson.com Pearson Copyright 2009