buildroot/support/scripts/generate-gitlab-ci-yml
Yann E. MORIN cf8364f202 support/scripts/generate-gitlab-ci-yml: rework generation of pipelines
Currently, we handle three kinds of tests: basic, defconfig, and
runtime, and we treat them totally independently ones from the others.

Except for the basic tests that are ignored when defconfig or runtime
tests are explicitly requested.

The basic tests are also run systematically on all our reference
branches: master, next (when it exists), and the maintenance branches:
YYYY.MM.x.

Furthermore, we can see that the conditions to run each set of tests
are very similar, with only the explicit queries differing by name.

Rework the script so that the conditions are expressed only once, and
each set of tests is decided for each condition. This makes it easier
to decide what tests should run under what conditions.

Using GitLab-CI's schedules, with a variable expressing the actual test
to run, would seem the obvious choice to trigger the pipelines. However,
a schedule is configured for a specific branch, which means we would
need one schedule per branch we want to build per test cases we want to
run, *and* that we update those schedules when we add/remove branches
(e.g. when we open/close 'next', or a maintenance branch). This is not
very nice, as it requires some manual tweaking and twiddling on the web
UI.

Instead, we resort to using triggers, that will be triggered from a
cronjob on some server. Using a cronjiob allows us to more easily manage
the branches we want to test and test cases we want to run, to more
easily spread the load over the week, etc...

Note: triggering a pipeline can be done with a simple curl invocation:

    $ curl -X POST \
        -F "token=${YOUR_TOKEN}" \
        -F "ref=${BRANCH_TO_TEST}" \
        -F "variables[BR_SCHEDULE_JOBS]=${TEST_TO_RUN}" \
        "https://gitlab.com/api/v4/projects/${YOUR_PROJECT_ID}/trigger/pipeline"

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Romain Naour <romain.naour@gmail.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-10-06 15:38:48 +02:00

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#!/usr/bin/env bash
set -e
set -o pipefail
main() {
local template="${1}"
preamble "${template}"
gen_tests
}
preamble() {
local template="${1}"
cat - "${template}" <<-_EOF_
# This file is generated; do not edit!
# Builds appear on https://gitlab.com/buildroot.org/buildroot/pipelines
image: ${CI_JOB_IMAGE}
_EOF_
}
gen_tests() {
local -a basics defconfigs runtimes
local do_basics do_defconfigs do_runtime
local defconfigs_ext cfg tst
basics=( DEVELOPERS flake8 package )
defconfigs=( $(cd configs; LC_ALL=C ls -1 *_defconfig) )
runtimes=( $(./support/testing/run-tests -l 2>&1 \
| sed -r -e '/^test_run \((.*)\).*/!d; s//\1/' \
| LC_ALL=C sort)
)
if [ -n "${CI_COMMIT_TAG}" ]; then
do_basics=true
do_defconfigs=base
do_runtime=true
elif [ "${CI_PIPELINE_SOURCE}" = "trigger" ]; then
case "${BR_SCHEDULE_JOBS}" in
(basic)
do_basics=true
do_defconfigs=check
defconfigs_ext=_check
;;
(defconfig)
do_defconfigs=base
;;
(runtime)
do_runtime=true
;;
esac
else
case "${CI_COMMIT_REF_NAME}" in
(*-basics)
do_basics=true
do_defconfigs=check
defconfigs_ext=_check
;;
(*-defconfigs)
do_defconfigs=base
;;
(*-*_defconfig)
defconfigs=( "${CI_COMMIT_REF_NAME##*-}" )
do_defconfigs=base
;;
(*-runtime-tests)
do_runtime=true
;;
(*-tests.*)
runtimes=( "${CI_COMMIT_REF_NAME##*-}" )
do_runtime=true
;;
esac
fi
# If nothing else, at least do the basics to generate a valid pipeline
if [ -z "${do_defconfigs}" \
-a -z "${do_runtime}" \
]
then
do_basics=true
fi
if ${do_basics:-false}; then
for tst in "${basics[@]}"; do
printf 'check-%s: { extends: .check-%s_base }\n' "${tst}" "${tst}"
done
fi
if [ -n "${do_defconfigs}" ]; then
for cfg in "${defconfigs[@]}"; do
printf '%s%s: { extends: .defconfig_%s }\n' \
"${cfg}" "${defconfigs_ext}" "${do_defconfigs}"
done
fi
if ${do_runtime:-false}; then
printf '%s: { extends: .runtime_test_base }\n' "${runtimes[@]}"
fi
}
main "${@}"