snapshot of https://github.com/mattermost/mattermost.git (master, 2026-09-16; blobs > 131072B omitted)

.github/workflows/server-test-merge-template.yml

@@ -0,0 +1,105 @@
+name: Server Test Merge Template
+
+on:
+  workflow_call:
+    inputs:
+      artifact-pattern:
+        description: "Glob pattern to download shard artifacts"
+        required: true
+        type: string
+      artifact-name:
+        description: "Name for the merged output artifact"
+        required: true
+        type: string
+      save-timing-cache:
+        description: "Whether to save timing cache for future shard balancing"
+        required: false
+        type: boolean
+        default: false
+      all-shards-passed:
+        description: "Whether every upstream shard succeeded. Used to gate the timing-cache save so a single shard failure doesn't poison the cache with missing-package data."
+        required: false
+        type: boolean
+        default: false
+
+permissions:
+  contents: read
+  actions: write
+
+jobs:
+  merge:
+    name: Merge
+    if: always()
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Download all shard artifacts
+        uses: actions/download-artifact@70fc10c6e5e1ce46ad2ea6f2b72d43f7d47b13c3 # v8.0.0
+        with:
+          pattern: ${{ inputs.artifact-pattern }}
+          path: shards
+
+      - name: Merge JUnit reports
+        run: |
+          python3 -c "
+          import glob, sys
+          from xml.etree import ElementTree as ET
+
+          root = ET.Element('testsuites')
+          for path in sorted(glob.glob('shards/*/report.xml')):
+              tree = ET.parse(path)
+              r = tree.getroot()
+              if r.tag == 'testsuites':
+                  root.extend(r)
+              else:
+                  root.append(r)
+
+          ET.ElementTree(root).write('merged-report.xml', xml_declaration=True, encoding='UTF-8')
+          "
+
+      - name: Prepare merged artifact
+        run: |
+          mkdir -p merged
+          cp merged-report.xml merged/report.xml
+          for dir in shards/*/; do
+            if [[ -f "${dir}test-name" ]]; then
+              cp "${dir}test-name" merged/test-name
+              cp "${dir}pr-number" merged/pr-number
+              break
+            fi
+          done
+
+      - name: Upload merged test logs
+        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
+        with:
+          name: ${{ inputs.artifact-name }}
+          path: merged/
+
+      - name: Prepare timing cache
+        if: inputs.save-timing-cache
+        id: timing-prep
+        run: |
+          mkdir -p server
+          echo "date=$(date -u +%Y-%m-%d)" >> "$GITHUB_OUTPUT"
+          if [[ -f merged-report.xml && $(stat -c%s merged-report.xml) -gt 1024 ]]; then
+            cp merged-report.xml server/prev-report.xml
+            cat shards/*/gotestsum.json > server/prev-gotestsum.json 2>/dev/null || true
+            echo "has_timing=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "Skipping timing cache — merged report too small or missing"
+            echo "has_timing=false" >> "$GITHUB_OUTPUT"
+          fi
+
+      # Only save when every upstream shard succeeded. If even one shard
+      # failed/was killed, its gotestsum.json is missing and the merged report
+      # has no timings for that shard's packages — saving that would poison
+      # future shard splits (missing packages default to 1ms, all bin-pack
+      # onto the lightest shard, overloading it and repeating the failure).
+      - name: Save test timing cache
+        if: inputs.save-timing-cache && inputs.all-shards-passed && steps.timing-prep.outputs.has_timing == 'true' && github.ref_name == github.event.repository.default_branch
+        uses: actions/cache/save@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
+        with:
+          path: |
+            server/prev-report.xml
+            server/prev-gotestsum.json
+          # Bucket by UTC date (not run id) so we save at most one cache per day.
+          key: server-test-timing-v2-master-${{ steps.timing-prep.outputs.date }}