From b1b4df356ba0b8d6dc7b7ffddf294c6d2d507be8 Mon Sep 17 00:00:00 2001
From: Joe Wang <joewa@google.com>
Date: Fri, 5 Apr 2024 20:44:51 -0400
Subject: [PATCH 1/2] chore: add a generic workflow to generate libraries

---
 .../hermetic_library_generation.yaml          | 57 +++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 .github/workflows/hermetic_library_generation.yaml

diff --git a/.github/workflows/hermetic_library_generation.yaml b/.github/workflows/hermetic_library_generation.yaml
new file mode 100644
index 000000000000..daad80097aef
--- /dev/null
+++ b/.github/workflows/hermetic_library_generation.yaml
@@ -0,0 +1,57 @@
+name: Hermetic library generation upon generation config change through pull requests
+
+on:
+  pull_request:
+    types:
+    - synchronize
+    paths:
+    - generation_config.yaml
+
+jobs:
+  library_generation:
+    runs-on: ubuntu-latest
+    env:
+      library_generation_image_tag: latest
+      repo_volumes: "-v repo-google-cloud-java:/workspace/google-cloud-java"
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        ref: ${{ github.head_ref }}
+    - name: get baseline generation config
+      uses: actions/checkout@v4
+      with:
+        ref: ${{ github.base_ref }}
+        path: baseline
+        sparse-checkout: generation_config.yaml
+    - name: setup docker environment
+      shell: bash
+      run: |
+        # we create a volume pointing to `pwd` (google-cloud-java) that will
+        # be referenced by the container and its children
+        docker volume rm repo-google-cloud-java
+        docker volume create --name "repo-google-cloud-java" --opt "type=none" --opt "device=$(pwd)" --opt "o=bind"
+    - name: generate libraries
+      shell: bash
+      run: |
+        docker run --rm \
+          ${repo_volumes} \
+          -v /tmp:/tmp \
+          -v /var/run/docker.sock:/var/run/docker.sock \
+          -e "RUNNING_IN_DOCKER=true" \
+          -e "REPO_BINDING_VOLUMES=${repo_volumes}" \
+          gcr.io/cloud-devrel-public-resources/java-library-generation:"${library_generation_image_tag}" \
+          python /src/cli/entry_point.py generate \
+          --baseline-generation-config-yaml=/workspace/google-cloud-java/baseline/generation_config.yaml \
+          --current-generation-config-yaml=/workspace/google-cloud-java/generation_config.yaml
+          --repository-path=/workspace/google-cloud-java
+    - name: Commit the change and push to the pull request branch
+      shell: bash
+      run: |
+        [ -z "`git config user.email`" ] && git config --global user.email "cloud-java-bot@google.com"
+        [ -z "`git config user.name`" ] && git config --global user.name "cloud-java-bot"
+        git add java-* pom.xml gapic-libraries-bom/pom.xml versions.txt generation_config.yaml
+        # use --allow-empty because (rarely) there's no change.
+        git commit --allow-empty -m "generate libraries based on configuration change"
+        git push
+      env:
+        GH_TOKEN: ${{ secrets.CLOUD_JAVA_BOT_TOKEN }}

From 7c0c2cb96ed3edf4e749906e0d378ab0a37fb723 Mon Sep 17 00:00:00 2001
From: Joe Wang <joewa@google.com>
Date: Tue, 9 Apr 2024 13:57:12 -0400
Subject: [PATCH 2/2] remove generation logic

---
 .../hermetic_library_generation.yaml          | 32 ++-----------------
 1 file changed, 2 insertions(+), 30 deletions(-)

diff --git a/.github/workflows/hermetic_library_generation.yaml b/.github/workflows/hermetic_library_generation.yaml
index daad80097aef..e469a9e7fc2b 100644
--- a/.github/workflows/hermetic_library_generation.yaml
+++ b/.github/workflows/hermetic_library_generation.yaml
@@ -23,35 +23,7 @@ jobs:
         ref: ${{ github.base_ref }}
         path: baseline
         sparse-checkout: generation_config.yaml
-    - name: setup docker environment
+    - name: diff
       shell: bash
       run: |
-        # we create a volume pointing to `pwd` (google-cloud-java) that will
-        # be referenced by the container and its children
-        docker volume rm repo-google-cloud-java
-        docker volume create --name "repo-google-cloud-java" --opt "type=none" --opt "device=$(pwd)" --opt "o=bind"
-    - name: generate libraries
-      shell: bash
-      run: |
-        docker run --rm \
-          ${repo_volumes} \
-          -v /tmp:/tmp \
-          -v /var/run/docker.sock:/var/run/docker.sock \
-          -e "RUNNING_IN_DOCKER=true" \
-          -e "REPO_BINDING_VOLUMES=${repo_volumes}" \
-          gcr.io/cloud-devrel-public-resources/java-library-generation:"${library_generation_image_tag}" \
-          python /src/cli/entry_point.py generate \
-          --baseline-generation-config-yaml=/workspace/google-cloud-java/baseline/generation_config.yaml \
-          --current-generation-config-yaml=/workspace/google-cloud-java/generation_config.yaml
-          --repository-path=/workspace/google-cloud-java
-    - name: Commit the change and push to the pull request branch
-      shell: bash
-      run: |
-        [ -z "`git config user.email`" ] && git config --global user.email "cloud-java-bot@google.com"
-        [ -z "`git config user.name`" ] && git config --global user.name "cloud-java-bot"
-        git add java-* pom.xml gapic-libraries-bom/pom.xml versions.txt generation_config.yaml
-        # use --allow-empty because (rarely) there's no change.
-        git commit --allow-empty -m "generate libraries based on configuration change"
-        git push
-      env:
-        GH_TOKEN: ${{ secrets.CLOUD_JAVA_BOT_TOKEN }}
+        diff generation_config.yaml baseline/generation_config.yaml