[ci] find ref commit in check-pipeline

This allows us to psas that reference commit downstream to e.g.
dumux-lecture

.gitlab-ci.yml

@@ -30,13 +30,29 @@ check-pipeline-status:
       when: always
   script:
     - |
+      getLastSuccessful() {
+          python3 .gitlab-ci/getpipelineinfo.py \
+                      --access-token $CI_JOB_API_READ_TOKEN \
+                      --look-for latest-merge \
+                      --print-format commit-sha
+      }
+
       if ! python3 .gitlab-ci/getpipelineinfo.py --access-token $CI_JOB_API_READ_TOKEN \
                                                  --look-for HEAD \
                                                  --print-format pipeline-id; then
-          echo "No successful pipeline found. Triggering new pipeline..."
+          echo "No successful pipeline found."
+
+          REFERENCE_SHA=""
+          if getLastSuccessful; then
+              REFERENCE_SHA=$(getLastSuccessful);
+              echo "Triggering new pipeline against reference commit $REFERENCE_SHA."
+          else
+              echo "Latest successful pipeline not found. Trigger complete pipeline."
+          fi
+
           curl --request POST --form "token=$CI_JOB_TOKEN" \
                               --form ref=$CI_COMMIT_BRANCH \
-                              --form "variables[CI_TEST_AGAINST_LAST_SUCCESSFUL]=true" \
+                              --form "variables[CI_REFERENCE_SHA]=$REFERENCE_SHA" \
                               "https://git.iws.uni-stuttgart.de/api/v4/projects/31/trigger/pipeline"
       else
           echo "Found successful pipeline for the current state of the branch. Not testing again."
@@ -57,10 +73,8 @@ check-pipeline-status:
     include: .gitlab-ci/default.yml
     strategy: depend
   variables:
-    TRIGGER_SOURCE: $CI_PIPELINE_SOURCE
-    COMMIT_BRANCH: $CI_COMMIT_BRANCH
     MR_TARGET_BRANCH_NAME: $CI_MERGE_REQUEST_TARGET_BRANCH_NAME
-    TEST_AGAINST_LAST_SUCCESSFUL: $CI_TEST_AGAINST_LAST_SUCCESSFUL
+    REFERENCE_SHA: $CI_REFERENCE_SHA
   rules:
   - if: $CI_PIPELINE_SOURCE == "schedule"
     when: always
@@ -121,6 +135,7 @@ trigger lecture:
     branch: master
     strategy: depend
   variables:
-    DUMUX_PIPELINE_SOURCE: $CI_PIPELINE_SOURCE
     DUMUX_MERGE_REQUEST_SOURCE_BRANCH: $CI_MERGE_REQUEST_SOURCE_BRANCH_NAME
     DUMUX_MERGE_REQUEST_TARGET_BRANCH: $CI_MERGE_REQUEST_TARGET_BRANCH_NAME
+    DUMUX_COMMIT_SHA: $CI_COMMIT_SHA
+    DUMUX_REFERENCE_SHA: $CI_REFERENCE_SHA

.gitlab-ci/default.yml

@@ -12,23 +12,15 @@ workflow:
 
 # variables that should be overwritten by the trigger
 variables:
-  TRIGGER_SOURCE: "undefined"
-  COMMIT_BRANCH: "undefined"
-  MR_TARGET_BRANCH_NAME: "undefined"
+  MR_TARGET_BRANCH_NAME: ""
+  REFERENCE_SHA: ""
 
 select tests:
   stage: configure
   script:
     - dunecontrol --opts=$DUNE_OPTS_FILE --current all
     - |
-      getLastSuccesful() {
-          python3 .gitlab-ci/getpipelineinfo.py \
-                      --access-token $CI_JOB_API_READ_TOKEN \
-                      --look-for latest-merge \
-                      --print-format commit-sha
-      }
-
-      if [[ "$TRIGGER_SOURCE" == "merge_request_event" ]]; then
+      if [[ -n "$MR_TARGET_BRANCH_NAME" ]]; then
           echo "Detecting changes w.r.t to target branch '$MR_TARGET_BRANCH_NAME'"
           python3 bin/testing/getchangedfiles.py --outfile changedfiles.txt \
                                                  --target-tree origin/$MR_TARGET_BRANCH_NAME
@@ -36,30 +28,17 @@ select tests:
                                            --file-list changedfiles.txt \
                                            --build-dir build-cmake
 
-      elif [[ "$TRIGGER_SOURCE" == "schedule" ]]; then
-          echo "Starting scheduled pipeline"
-          echo "Skipping test selection, build/test stages will consider all tests!"
-          touch affectedtests.json
-
-      elif [ -n $TEST_AGAINST_LAST_SUCCESSFUL ]; then
-          echo "Determining sha of the last successful pipeline to test against"
-
-          if ! getLastSuccesful; then
-              echo "Could not find a successful pipeline, will build/run all tests"
-              touch affectedtests.json
-          else
-              COMMIT_SHA=$(getLastSuccesful)
-              echo "Comparing against sha $COMMIT_SHA"
-              python3 bin/testing/getchangedfiles.py --outfile changedfiles.txt \
-                                                     --source-tree HEAD \
-                                                     --target-tree $COMMIT_SHA
-              python3 bin/testing/findtests.py --outfile affectedtests.json \
-                                               --file-list changedfiles.txt \
-                                               --build-dir build-cmake
-          fi
+      elif [[ -n "$REFERENCE_SHA" ]]; then
+          echo "Detecting changes w.r.t to reference commit $REFERENCE_SHA"
+          python3 bin/testing/getchangedfiles.py --outfile changedfiles.txt \
+                                                 --source-tree HEAD \
+                                                 --target-tree $REFERENCE_SHA
+          python3 bin/testing/findtests.py --outfile affectedtests.json \
+                                           --file-list changedfiles.txt \
+                                           --build-dir build-cmake
 
       else
-          echo "Unknown pipeline trigger event"
+          echo "No reference information given."
           echo "Skipping test selection, build/test stages will consider all tests!"
           touch affectedtests.json
       fi