test changelog workflow

Author: jonathan343

.github/workflows/api-changelog-check.yml

@@ -0,0 +1,57 @@
+name: API Changelog Check
+
+on:
+  pull_request:
+    paths:
+      - 'codegen/aws-models/**'
+
+permissions:
+  contents: read
+
+jobs:
+  check-changelog:
+    runs-on: ubuntu-latest
+    if: ${{ !contains(github.event.pull_request.labels.*.name, 'skip-changelog') }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Get changed model files
+        id: changed-models
+        run: |
+          changed_models=$(git diff --name-only origin/${{ github.base_ref }}...HEAD -- 'codegen/aws-models/*.json' | xargs -I {} basename {} .json)
+          echo "models<<EOF" >> $GITHUB_OUTPUT
+          echo "$changed_models" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+
+      - name: Check for changelog entries
+        run: |
+          missing_changelogs=""
+
+          while IFS= read -r service; do
+            [ -z "$service" ] && continue
+
+            changelog_dir="clients/aws-sdk-${service}/.changes/next-release"
+
+            if [ ! -d "$changelog_dir" ]; then
+              missing_changelogs="${missing_changelogs}\n  - ${service} (directory does not exist: ${changelog_dir})"
+              continue
+            fi
+
+            # Check if there are any files in the next-release directory
+            file_count=$(find "$changelog_dir" -maxdepth 1 -type f | wc -l)
+            if [ "$file_count" -eq 0 ]; then
+              missing_changelogs="${missing_changelogs}\n  - ${service} (no changelog entries in ${changelog_dir})"
+            fi
+          done <<< "${{ steps.changed-models.outputs.models }}"
+
+          if [ -n "$missing_changelogs" ]; then
+            echo "::error::Missing changelog entries for the following services:${missing_changelogs}"
+            echo ""
+            echo "Please add a changelog entry in clients/aws-sdk-<service>/.changes/next-release/ for each modified model."
+            exit 1
+          fi
+
+          echo "All modified models have corresponding changelog entries."