[PATCH 2/2] ci: add support for sstate cache

["'Felix Moessbauer' via isar-users" <isar-users@googlegroups.com>]

The gitlab CI jobs should finish in a timely manner to give quick
feedback to the developer. By running the tests with sstate cache,
simple changes require far less CI time.

We prepare the gitlab ci job description to pick up the sstate cache
configuration from the environment and enable the caching for all jobs
(we always enable it, even if running without sstate cache, as then the
cache is simply thrown away later on). We further introduce a (manual)
info task to show the state of the cache, as well as a cleanup task to
drain the cache.

Signed-off-by: Felix Moessbauer <felix.moessbauer@siemens.com>
---
 .gitlab-ci.yml | 34 ++++++++++++++++++++++++++++------
 1 file changed, 28 insertions(+), 6 deletions(-)

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1a7abcb8..9bd8ff07 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -12,6 +12,14 @@ variables:
     - export ftp_proxy=$FTP_PROXY
     - export no_proxy=$NO_PROXY
     - export DISTRO_APT_PREMIRRORS=$DISTRO_APT_PREMIRRORS
+  after_script:
+    - |
+      if [[ -n "${SSTATE_LOCATION}" ]] && [[ -d "sstate-cache" ]]; then
+        echo "=== Upload sstate artifacts to ${SSTATE_LOCATION} ==="
+        ./scripts/isar-sstate upload "sstate-cache" "${SSTATE_LOCATION}"
+        ./scripts/isar-sstate info -v "${SSTATE_LOCATION}"
+      fi
+
   artifacts:
     name: "logs-$CI_JOB_ID"
     paths:
@@ -48,7 +56,7 @@ dev-ci:
     - *use-default-image
     - if: $TESTSUITE == 'dev' || $CI_PIPELINE_SOURCE != 'schedule'
   script:
-    - scripts/ci_build.sh -T dev
+    - scripts/ci_build.sh --sstate 1 -T dev
 
 fast-ci:
   <<: *common-build
@@ -56,7 +64,7 @@ fast-ci:
     - *use-default-image
     - if: $TESTSUITE == 'fast'
   script:
-    - scripts/ci_build.sh -T fast
+    - scripts/ci_build.sh --sstate 1 -T fast
 
 full-ci:
   <<: *common-build
@@ -68,7 +76,7 @@ full-ci:
     - PREVIOUS_SHA="$(cat .CI_COMMIT_SHA || true)"
     - if [ "$CI_COMMIT_SHA" != "$PREVIOUS_SHA" ]; then
           echo "$CI_COMMIT_SHA" > .CI_COMMIT_SHA;
-          scripts/ci_build.sh -T full;
+          scripts/ci_build.sh --sstate 1 -T full;
       fi
   cache:
     key: "$CI_COMMIT_REF_SLUG"
@@ -83,7 +91,7 @@ dev-ci-isar:
     - *use-docker-isar-image
     - if: $TESTSUITE == 'dev'
   script:
-    - scripts/ci_build.sh -T dev
+    - scripts/ci_build.sh --sstate 1 -T dev
 
 fast-ci-isar:
   <<: *docker-isar
@@ -92,7 +100,7 @@ fast-ci-isar:
     - *use-docker-isar-image
     - if: $TESTSUITE == 'fast'
   script:
-    - scripts/ci_build.sh -T fast
+    - scripts/ci_build.sh --sstate 1 -T fast
 
 full-ci-isar:
   <<: *docker-isar
@@ -101,4 +109,18 @@ full-ci-isar:
     - *use-docker-isar-image
     - if: $TESTSUITE == 'full'
   script:
-    - scripts/ci_build.sh -T full
+    - scripts/ci_build.sh --sstate 1 -T full
+
+sstate-cache-info:
+  stage: build
+  when: manual
+  script:
+    - ./scripts/isar-sstate info -v "${SSTATE_LOCATION}"
+
+sstate-cache-clean:
+  stage: build
+  when: manual
+  variables:
+    SSTATE_MAX_AGE: "0d"
+  script:
+    - ./scripts/isar-sstate clean "${SSTATE_LOCATION}" --max-age "${SSTATE_MAX_AGE}"
-- 
2.51.0

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