Historically, the code that controls how Firefox CI runs has lived outside of the Firefox repo and has been managed by Release Engineering. Over the past few years, more and more of that code has moved into the Firefox repository. And with the transition to Taskcluster to power Firefox CI, that code has been significantly overhauled.
In 2016, Dustin Mitchell introduced a new in-tree scheduling mechanism called Taskgraph. That "D"ecision task that runs first when you push something is Taskgraph. Taskgraph is an important piece of infrastructure. It determines what and how Firefox CI runs. That encompasses builds, tests, and even release machinery. As you can imagine, there are a host of concerns from capacity planning, security, determinism/reproducibility, scheduling, caching, optimization, etc. There's a lot of contextual knowledge encapsulated in Taskgraph and the consequences for making mistakes can be significant. Taskgraph, like many projects, started small and grew into something much larger. It's been past the point of needing formal governance for a while now. Dustin approached me about making Taskgraph a sub-module of the Build Config module. While there are some justifications for Taskgraph being its own top-level module, after discussing it with various people, we think a sub-module of the Build Config module is the best situation for the time being. So, I'm announcing the creation of the Taskgraph sub-module of the Build Config module. The owner of this sub-module is Dustin Mitchell. Peers (with areas of focus) are: ahal - try, optimization, test configuration glandium - toolchains, determinism gps - run-task, determinism, caching jmaher - test configuration, chunking Callek - release machinery aki - content verifiability / chain of trust, scriptworker bstack - action tasks I believe that Taskgraph should function as an independent module and not be subservient to the build system. So while it is a sub-module, the intent is to not abuse the hierarchical superiority of the Build Config module to influence decisions in the Taskgraph module. I hope others hold me or a future module owner accountable should any abuse of power occur. gps _______________________________________________ governance mailing list governance@lists.mozilla.org https://lists.mozilla.org/listinfo/governance
