Hi.
I have 10 related software components to build (jobs 1 through 10), which
are somewhat independent of each other, and presently they each trigger
individually on a source change, i.e. their builds only go if their source
changes. We have the check for these components source changes staggered,
according to a nightly schedule, a half hour hour apart, so that they do
not all go off at once, in case they all did happen to have a source
change, as I do not wish to hog the build machine from other jobs. The
problem is I do not know whether one or more of these jobs actually build
upon a source change, I have to assume at least one always builds, and so I
am always running an 11th job (test), and a 12th job (install kit),
according to a timed schedule, which may not need to be actually run if
nothing actually changed.
I do not see how to do this in Jenkins. if I have job 1 configured to
start job 2 as a post-build step ("Build other projects"), then it seems to
always start it, whether the source has changed or not. So, this does not
seem to be a workable method to see if the 10 jobs have a source change.
It'd be nice to check through all 10 jobs, and only build each one
sequentially, if they have do have a source change, instead of scheduling
them 1/2 hour apart. Then, if any one or more did actually build, then do
the test, and if the test works, then do the kit.
Summary: first 10 jobs need to be checked for source changes, and they
only build individually if they have a source change.
if any of the first 10 jobs build okay, (regardless of any other job's
failures), only then does the 11th job needs to start. So, all of the
first 10 jobs need to be checked , and one or more actually build, before
possibly doing the 11th job.
If 11th job is okay, then 12 the job goes. This last part I can do with
existing "Build other projects" or "Trigger Parameterized Builds plugin"
mechanisms.
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