gitlab: convert static checks to .base_job_template

This folds the static checks into using the base job
template rules, introducing one new variable

 - QEMU_JOB_ONLY_FORKS - a job that should never run
   on an upstream pipeline. The information it reports
   is only applicable to contributors in a pre-submission
   scenario, not time of merge.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220526110705.59952-4-berrange@redhat.com>
[AJB: fix typo]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20220527153603.887929-31-alex.bennee@linaro.org>

.gitlab-ci.d/base.yml

@@ -16,6 +16,10 @@
     - if: '$QEMU_JOB_CIRRUS && ($CIRRUS_GITHUB_REPO == "" || $CIRRUS_API_TOKEN == "")'
       when: never
 
+    # Jobs only intended for forks should always be skipped on upstream
+    - if: '$QEMU_JOB_ONLY_FORKS == "1" && $CI_PROJECT_NAMESPACE == "qemu-project"'
+      when: never
+
 
     #############################################################
     # Stage 2: fine tune execution of jobs in specific scenarios

.gitlab-ci.d/static_checks.yml

@@ -1,4 +1,5 @@
 check-patch:
+  extends: .base_job_template
   stage: build
   image: python:3.10-alpine
   needs: []
@@ -6,15 +7,13 @@ check-patch:
     - .gitlab-ci.d/check-patch.py
   variables:
     GIT_DEPTH: 1000
+    QEMU_JOB_ONLY_FORKS: 1
   before_script:
     - apk -U add git perl
-  rules:
-    - if: '$CI_PROJECT_NAMESPACE == "qemu-project"'
-      when: never
-    - when: on_success
   allow_failure: true
 
 check-dco:
+  extends: .base_job_template
   stage: build
   image: python:3.10-alpine
   needs: []
@@ -23,12 +22,9 @@ check-dco:
     GIT_DEPTH: 1000
   before_script:
     - apk -U add git
-  rules:
-    - if: '$CI_PROJECT_NAMESPACE == "qemu-project" && $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH'
-      when: never
-    - when: on_success
 
 check-python-pipenv:
+  extends: .base_job_template
   stage: test
   image: $CI_REGISTRY_IMAGE/qemu/python:latest
   script:
@@ -39,6 +35,7 @@ check-python-pipenv:
     job: python-container
 
 check-python-tox:
+  extends: .base_job_template
   stage: test
   image: $CI_REGISTRY_IMAGE/qemu/python:latest
   script:
@@ -46,8 +43,6 @@ check-python-tox:
   variables:
     GIT_DEPTH: 1
     QEMU_TOX_EXTRA_ARGS: --skip-missing-interpreters=false
+    QEMU_JOB_OPTIONAL: 1
   needs:
     job: python-container
-  rules:
-    - when: manual
-  allow_failure: true

docs/devel/ci-jobs.rst.inc

@@ -66,6 +66,13 @@ by default due to need to conserve limited CI resources. It is
 available to be started manually by the contributor in the CI
 pipelines UI.
 
+QEMU_JOB_ONLY_FORKS
+~~~~~~~~~~~~~~~~~~~
+
+The job results are only of interest to contributors prior to
+submitting code. They are not required as part of the gating
+CI pipeline.
+
 Contributor controlled runtime variables
 ----------------------------------------