In my previous post, I announced a Java implementation of my Tsugi library. Java Tsugi has as its goal to allow externally hosted LTI applications to be quickly developed and hosted.

But there is more….

I have been long positing that Tsugi would be a way to build portable applications that ran in any Java framework. Take a look at this slide set starting at slide 24 through the end. Pay particular attention to slide 28.

I claim that the same Tsugi application can run standalone in a Tomcat or in a Sakai-provisioned Tomcat as a Sakai tool with zero code changes. I see Tsugi as a great way to build the next generation of Sakai tools like XWiki – we can build an LTI capable XWiki to plug into Sakai or any other LMS.

I have made some really initial steps in this repo:

https://github.com/csev/tsugi-sakai

This is contains a Sakai implementation of the Tsugi APIs so that the Tsugi Java Servlet can be provisioned run in a Sakai Tomcat. The implementation is currently empty – but I have worked out the class loader issues that allow me to provision a Tsugi servlet with a different implementation without changing the servlet.

So this is very much a start – the README.md has a lot of steps – and at the end all you get is a 500 error as shown below – but it does show how we can eventually connect the Tsugi and Sakai worlds.