Updated Version: Tsugi Overview
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1. Tsugi is a tool hosting framework that allows LTI tools to be installed and run within its PHP or Java-based container. 2. It emulates Moodle APIs and provides a multi-tenant environment for tools while keeping user data secure. 3. The framework supports LTI 1.x and 2.x specifications and can integrate other IMS standards like Caliper and CASA to host tools from an app store or custom sources.
Updated Version: Tsugi Overview
- 1. Building Scalable IMS LTI Tools Using the TSUGI Framework Charles Severance www.dr-chuck.com www.tsugi.org
- 2. 2
- 4. Project Tsugi • Tool Hosting Container (i.e. Like a B2) – PHP now, Java in development • Based on IMS Specifications – LTI 1.x / LTI 2.x / IMS Settings / Common Cartridge / Caliper / CASA / Roster / Gradebook / .... • Tools can run on a campus hosting platform or commercial provider or cloud • Tools are "installed" into hosting containers
- 5. From the 2003 Sakai Proposal http://www-personal.umich.edu/~csev/papers/2004/2004_03_01_mellon_sakai_proposal.pdf
- 6. ... WTD?
- 8. "Large Midwestern University" Sakai ....... Looks pretty cool.... But...
- 9. Sakai • Where is the user data?? • What happens when there are 50 apps? • What if the app is free and hosted by a professor? • What happens if we stop paying the license?
- 11. LTI 1.x versus LTI 2.x and Beyond • LTI 1.x – Three pages of spec and some "hello world" code • LTI 2.x – Several specs – multiple interactions – We will need to share common implementations across instructions • And what about Caliper, Casa, xAPI, etc. ??
- 12. Multiple LMS Campus + App Store App Store Tool Tool Tool Tool...
- 13. Multiple LMS Campus + App Store App Store Tool Tool Tool Tool Tsugi Hosting Container Tool ToolTool ... Install
- 14. Tsugi Exp Multiple LMS Campus + App Store App Store Tool Tool Tool Tool Tsugi Prod Tool ToolTool ...
- 15. www.tsugi.org
- 20. • Install / Configuration similar to Moodle • Emulate the Moodle APIs / Runtime • Multi-tenant • Cookie free (i.e. loves iframes) • Uses PDO with some rules about FK for easy cleanup • Auto-ddl feature to upgrade schema PHP Tsugi
- 21. PHP Tsugi Tool Code <?php require_once "../../config.php"; require_once $CFG->dirroot."/pdo.php"; require_once $CFG->dirroot."/lib/lms_lib.php"; use TsugiCoreLTIX; $LTI = LTIX::requireData(array('user_id', 'link_id', 'role','context_id')); ... $OUTPUT->header(); $OUTPUT->bodyStart(); $OUTPUT->flashMessages(); $OUTPUT->welcomeUserCourse(); if ( $USER->instructor ) { ...
- 22. Demo • https://lti-tools.dr-chuck.com/tsugi/ – Developer mode – Apply for keys
- 23. PHP Tsugi Next Steps • Tsugi 2.0 – Break into parts • IMS LTI 2.1 Support • Improve Internationalization • xAPI support • IMS Caliper Support • IMS Casa Support • Moodle Outreach? Tsugi is in 24x7 production and I can support a few experimenters on my servers.
- 24. • Currently just a library and sample servlet • APIs + factory pattern • Depends on PHP Tsugi – Database table management – Developer test harness – Shares core data tables with PHP Tsugi • More to develop – Java database/key admin – Java developer console Java Tsugi http://csev.github.io/tsugi-java/
- 25. Java Tsugi Tool Code Launch launch = tsugi.getLaunch(req, res); if ( launch.isComplete() ) return; if ( ! launch.isValid() ) { throw new RuntimeException(launch.getErrorMessage()); } Output o = launch.getOutput(); Properties p = o.header(out); out.println("<title>Sample</title>"); // Some of my CSS includes... o.bodyStart(out); o.navStart(out); // If you want it.. o.flashMessages(out); out.println("<pre>"); out.println("Welcome to hello world!"); out.println("</pre>"); o.navEnd(out); // If you started it o.footerStart(out); // Some of my own JavaScript goodness $(document).ready( ... ); o.footerEnd(out);
- 28. Deploying Java Tsugi Apps Tomcat Sakai Tsugi Tool STsugi Sakai Tool Sakai Amazon Tsugi Tool JTusgi Tsugi Tool JTsugi
- 29. Java Tsugi Next Steps • Build out the library • Build LTI 2 registration servlet • Build administrator interface – Configure database / manage keys – Developer console – Tool hosting / installer (CASA Perhaps?) • Explore org.sakaiproject.tsugi...