On Sep 19, 2020, at 5:27 PM, Adi Roiban <adi@roiban.ro> wrote:



On Sat, 19 Sep 2020 at 21:30, Craig Rodrigues <rodrigc@crodrigues.org> wrote:
Adi,

Is it possible to configure the CI so that
Azure, Travis and CircleCI only runs if GitHub actions pass?

For example here:


Azure Pipelines and Travis should only run if the GitHub actions pass.


My question is: why would we want to do this?  It seems like it would just make it slower to get feedback for contributors.

I think that is partially possible...but complicated.

My question: Why does Twisted need Azure Pipelines (sharing infastructure with GihutActions), Travis-CI and Circle-Ci.

Why can't Twisted just use GitHub actions?

In a word: capacity. We have a large test matrix and more services = more parallel builds.

The calculus on this is changing all the time; the amount of free stuff that Github Actions gives us has substantially increased, other services have stood still, things that used to be special dispensations for extra parallel builds are now just the default, we test on fewer kernels than we used to (no FreeBSD, for example).

If we no longer get a substantial capacity benefit from using multiple services, we should definitely simplify and unify on one service.

You can trigger one GitHub action workflow from another workflow, or everything as depende jobs inside one workflow.

GitHub Action API is pretty good. I was able to implement a quick hack which sends a diff to GitHub and executes a test without a commit, just like Builbot Try [3].
I don't know how to implement something similar with Travis or Circle-Ci.

---------

Travis-CI builds can be triggered over the  HTTP API [1]...but I feel that implementing it is complicated.
There should be a dedicated token... which should be created by a person, and then stored as a secret in GttHub Actions.

I don't know how to trigger Circle-CI .. here is some info here [2] but looks like it will be deprecated

I don't know how to trigger Azure Pipelines. but I guess that at some point MS will kill Azure Pipelines

[1] https://docs.travis-ci.com/user/triggering-builds/
[2] https://circleci.com/docs/2.0/api-job-trigger/
[3] https://asciinema.org/a/nn1U7FLtbyWm57b0dT7U5sKD0
--
Adi Roiban
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