protect against empty changesets for post-release workflows

.github/workflows/benchmarks.yml

@@ -21,12 +21,17 @@ jobs:
         name: Clone Git Repository
         uses: actions/checkout@v3
         with:
-          fetch-depth: 0 # required in order to get all tags
+          fetch-depth: 0
+      - id: commits
+        name: Count Commits
+        run: echo "::set-output name=count::$(git rev-list --count HEAD --since='last Wednesday' -- yosql-codegen yosql-internals yosql-models yosql-tooling)"
       - id: previous
         name: Get Last Release
+        if: steps.commits.outputs.count > 0
         run: echo "::set-output name=version::$(git describe --abbrev=0 --tags)"
       - id: java
         name: Setup Java
+        if: steps.commits.outputs.count > 0
         uses: actions/setup-java@v3
         with:
           java-version: ${{ env.JAVA_VERSION }}
@@ -35,6 +40,7 @@ jobs:
           distribution: ${{ env.JAVA_DISTRO }}
       - id: cache
         name: Cache Maven Repository
+        if: steps.commits.outputs.count > 0
         uses: actions/cache@v3
         with:
           path: ~/.m2/repository
@@ -43,21 +49,27 @@ jobs:
             ${{ runner.os }}-maven-
       - id: run-benchmark
         name: Run Benchmark [${{ matrix.benchmark }}]
+        if: steps.commits.outputs.count > 0
         run: mvn --batch-mode --projects yosql-benchmarks/yosql-benchmarks-${{ matrix.benchmark }} --also-make --activate-profiles benchmarks verify --define org.slf4j.simpleLogger.log.yosql=warn --define skipTests 2>&1 1> build.log
       - id: copy-codegen-results
         name: Copy Codegen Results
+        if: steps.commits.outputs.count > 0
         run: cp --force ./benchmark-codegen/yosql-benchmarks-codegen.json ./yosql-website/content/benchmarks/results/yosql-benchmarks-codegen-${{ steps.previous.outputs.version }}.json
       - id: replace-codegen-results
         name: Replace CURRENT Codegen Results
+        if: steps.commits.outputs.count > 0
         run: cp --force ./benchmark-codegen/yosql-benchmarks-codegen.json ./yosql-website/content/benchmarks/results/yosql-benchmarks-codegen-CURRENT.json
       - id: copy-jdbc-results
         name: Copy JDBC Results
+        if: steps.commits.outputs.count > 0
         run: cp --force ./benchmark-dao/yosql-benchmarks-dao.json ./yosql-website/content/benchmarks/results/yosql-benchmarks-dao-${{ steps.previous.outputs.version }}.json
       - id: replace-jdbc-results
         name: Replace CURRENT JDBC Results
+        if: steps.commits.outputs.count > 0
         run: cp --force ./benchmark-dao/yosql-benchmarks-dao.json ./yosql-website/content/benchmarks/results/yosql-benchmarks-dao-CURRENT.json
       - id: push
         name: Push Changes
+        if: steps.commits.outputs.count > 0
         uses: stefanzweifel/git-auto-commit-action@v4
         with:
           commit_message: Update benchmark data for ${{ steps.previous.outputs.version }}

.github/workflows/release-announcement.yml

@@ -13,12 +13,17 @@ jobs:
         name: Clone Git Repository
         uses: actions/checkout@v3
         with:
-          fetch-depth: 0 # required in order to get all tags
+          fetch-depth: 0
+      - id: commits
+        name: Count Commits
+        run: echo "::set-output name=count::$(git rev-list --count HEAD --since='last Wednesday' -- yosql-codegen yosql-internals yosql-models yosql-tooling)"
       - id: previous
         name: Get Last Release
+        if: steps.commits.outputs.count > 0
         run: echo "::set-output name=version::$(git describe --abbrev=0 --tags)"
       - id: email
         name: Send Mail
+        if: steps.commits.outputs.count > 0
         uses: dawidd6/action-send-mail@v3
         with:
           server_address: ${{ secrets.MAIL_SERVER }}
@@ -31,6 +36,7 @@ jobs:
           body: See https://github.com/metio/yosql/releases/tag/${{ steps.previous.outputs.version }} for details.
       - id: matrix
         name: Send Matrix Message
+        if: steps.commits.outputs.count > 0
         uses: s3krit/matrix-message-action@v0.0.3
         with:
           access_token: ${{ secrets.MATRIX_ACCESS_TOKEN }}