gitlab: don't run CI jobs in forks by default

To preserve CI shared runner credits we don't want to run
pipelines on every push.

This sets up the config so that pipelines are never created
for contributors by default. To override this the QEMU_CI
variable can be set to a non-zero value. If set to 1, the
pipeline will be created but all jobs will remain manually
started. The contributor can selectively run jobs that they
care about. If set to 2, the pipeline will be created and
all jobs will immediately start.

This behavior can be controlled using push variables

  git push -o ci.variable=QEMU_CI=1

To make this more convenient define an alias

   git config --local alias.push-ci "push -o ci.variable=QEMU_CI=1"
   git config --local alias.push-ci-now "push -o ci.variable=QEMU_CI=2"

Which lets you run

  git push-ci

to create the pipeline, or

  git push-ci-now

to create and run the pipeline

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220526110705.59952-6-berrange@redhat.com>
[AJB: fix typo, replicate alias tips in ci.rst]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20220527153603.887929-33-alex.bennee@linaro.org>
This commit is contained in:
Daniel P. Berrangé 2022-05-27 16:36:02 +01:00 committed by Alex Bennée
parent e312d1fdbb
commit 28357dc525
2 changed files with 47 additions and 0 deletions

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@ -28,6 +28,10 @@
- if: '$QEMU_JOB_ONLY_FORKS == "1" && $CI_PROJECT_NAMESPACE == "qemu-project"'
when: never
# Forks don't get pipelines unless QEMU_CI=1 or QEMU_CI=2 is set
- if: '$QEMU_CI != "1" && $QEMU_CI != "2" && $CI_PROJECT_NAMESPACE != "qemu-project"'
when: never
# Avocado jobs don't run in forks unless $QEMU_CI_AVOCADO_TESTING is set
- if: '$QEMU_JOB_AVOCADO && $QEMU_CI_AVOCADO_TESTING != "1" && $CI_PROJECT_NAMESPACE != "qemu-project"'
when: never
@ -59,5 +63,10 @@
# an earlier criteria
#############################################################
# Forks pipeline jobs don't start automatically unless
# QEMU_CI=2 is set
- if: '$QEMU_CI != "2" && $CI_PROJECT_NAMESPACE != "qemu-project"'
when: manual
# Jobs can run if any jobs they depend on were successfull
- when: on_success

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@ -28,6 +28,32 @@ For further information about how to set these variables, please refer to::
https://docs.gitlab.com/ee/user/project/push_options.html#push-options-for-gitlab-cicd
Setting aliases in your git config
----------------------------------
You can use aliases to make it easier to push branches with different
CI configurations. For example define an alias for triggering CI:
.. code::
git config --local alias.push-ci "push -o ci.variable=QEMU_CI=1"
git config --local alias.push-ci-now "push -o ci.variable=QEMU_CI=2"
Which lets you run:
.. code::
git push-ci
to create the pipeline, or:
.. code::
git push-ci-now
to create and run the pipeline
Variable naming and grouping
----------------------------
@ -98,6 +124,18 @@ Contributor controlled runtime variables
The following variables may be set by contributors to control
job execution
QEMU_CI
~~~~~~~
By default, no pipelines will be created on contributor forks
in order to preserve CI credits
Set this variable to 1 to create the pipelines, but leave all
the jobs to be manually started from the UI
Set this variable to 2 to create the pipelines and run all
the jobs immediately, as was historicaly behaviour
QEMU_CI_AVOCADO_TESTING
~~~~~~~~~~~~~~~~~~~~~~~
By default, tests using the Avocado framework are not run automatically in