Quartermaster v0.1 development update #4: Major refactoring, requirements workshop April 11

March 22, 2018

After the basics of the Quartermaster toolchain are in place, we focused on a refactoring of the master APIs. The key goal is to make implementing modules for the three phases straightforward, composable and as simple as possible. All modules now run in separate processes that communicate with the master over the network. This decouples both the module and the master code, as well as the licensing models of the modules and the master. It is now possible to run multiple analysers configurable from the master. Analyzers may report multiple or overlapping findings of the same type, like copyright holders, without interfering with each other. Based on this, we can now implement modular reporters that generate HTML and SPDX, or notifications, or other kinds of feedback.

Extended data model forms the basis for reporting

There is now an updated API for analyzers. What analyzers are run is configured in the master configuration file. Analyzers extend the master data model by adding information nodes to the build graph. You will find a lot more and different kinds of nodes in it now (compared to, for example, in this previous post). They represent analyzers, authors, copyright holders and licenses:

A build graph with license and author information

On top of that, a couple of other changes made it into the repositories. It is now possible to run the master in a development container and attach to it with the debugger. The service definitions have been split and match the states the master goes through in it’s lifetime. And we presented Quartermaster at the Linux Foundation Open Source Leadership Summit in Sonoma Valley, CA.

Plans for the upcoming sprint

We are now working on doing the same kind of refactoring for the reporting API, and to finish first versions of the HTML/SPDX and the notification reporter. With that complete, the basic Quartermaster toolchain will be in place, and our focus will shift towards implementing more build instrumentation, analysis and reporting modules. Which means we are approaching a first release as planned. At the end of sprint #5 we should have a release candidate for version 0.1, which will be polished and prepared for release in sprint #6.

How to participate

Quartermaster will be presented at the BCS Open Source Specialist Group hosted event on Yanking the Chain: Open Source Software Compliance in the Supply Chain on March 22 in London.

The next community hangout is scheduled for March 28, 2018, at 16:00 CET. Join us for a demo of the sprint #5 results, and to plan sprint #6!

Sprint #6 will mark the end of development of Quartermaster v0.1. The requirements workshop for version 0.2, which will be developed in the second quarter of 2018, will take place on April 11, 2018, from 10am to 5pm, at the Endocode office on Berlin. Remember to register for a seat using the contact form. We hope to see you there!

Credits

Title image: Thomas Rydberg, “Construction site”, CC BY 2.0 Thanks for sharing!