如何为

Question

I am quite new to buildbot and struggling to create a configuration for the following python code structure:

A library containing some general classes and functions and two programs who depend on the one library. All three have their own git repository. Lets call the library the_lib and the programs prog_a and prog_b .

What I would like buildbot to do for me is periodically check the repositories for changes and if so rebuild what is necessary. So a change to the source of the_lib should rebuild all three, a change to the source of prog_a should only rebuild prog_a and a change to the source of prog_b should only rebuild prog_b .

I am at the point where I am able to build any of the three when its source changes but how do I introduce de dependency of prog_a and prog_b on the_lib ?

Cheers, Feoh

Answer 1

You can trigger multiple builders with a single source change, in the following example the first two each trigger their own builds, but the third one triggers all three:

  yield basic.AnyBranchScheduler(
            name = prog_a, treeStableTimer=delay,
            change_filter = my_a_filter,
            builderNames = [prog_a],
            )

  yield basic.AnyBranchScheduler(
            name = prog_b, treeStableTimer=delay,
            change_filter = my_b_filter,
            builderNames = [prog_b],
            )

  yield basic.AnyBranchScheduler(
            name = the_lib, treeStableTimer=delay,
            change_filter = my_lib_filter,
            builderNames = [prog_a, prog_b, the_lib],
            )

Answer 2

For the changes in the prog_(a|b) you can use a simple single branch scheduler that will call their builders.

For the_lib you have two options:

1. Create a Dependant scheduler for the builders of prog_a and prog_b , and set the upstream scheduler as the single branch scheduler of the_lib .
2. Configure for the prog_(a|b) a Triggerable scheduler, and trigger them using the Trigger build step from the_lib builder.