create PR earlier

Author: ezhang6811

.github/workflows/nightly-build.yml

@@ -4,13 +4,14 @@ on:
   schedule:
     - cron: "21 3 * * *"
   workflow_dispatch:
-  push:
-    branches:
-      - zhaez/nightly-build
 
 jobs:
-  build-and-test:
+  update-and-create-pr:
     runs-on: ubuntu-latest
+    outputs:
+      has_changes: ${{ steps.check_changes.outputs.has_changes }}
+      otel_python_version: ${{ steps.get_versions.outputs.otel_python_version }}
+      otel_contrib_version: ${{ steps.get_versions.outputs.otel_contrib_version }}
 
     steps:
     - name: Checkout repository
@@ -35,7 +36,7 @@ jobs:
     - name: Install build tools
       run: |
         python -m pip install --upgrade pip
-        pip install build pytest toml requests
+        pip install toml requests
     
     - name: Get latest upstream versions
       id: get_versions
@@ -47,7 +48,7 @@ jobs:
         OTEL_CONTRIB_VERSION: ${{ steps.get_versions.outputs.otel_contrib_version }}
       run: python scripts/update_dependencies.py
 
-    - name: Check for changes and run tests
+    - name: Check for changes and create PR
       id: check_changes
       run: |
         if git diff --quiet; then
@@ -56,10 +57,52 @@ jobs:
         else
           echo "Dependencies were updated"
           echo "has_changes=true" >> $GITHUB_OUTPUT
+          
+          # Create PR immediately
+          git add aws-opentelemetry-distro/pyproject.toml
+          git commit -m "chore: update OpenTelemetry dependencies to ${{ steps.get_versions.outputs.otel_python_version }}/${{ steps.get_versions.outputs.otel_contrib_version }}"
+          git push origin "$BRANCH_NAME"
+          
+          gh pr create \
+            --title "Nightly dependency update: OpenTelemetry ${{ steps.get_versions.outputs.otel_python_version }}/${{ steps.get_versions.outputs.otel_contrib_version }}" \
+            --body "Automated update of OpenTelemetry dependencies.
+
+          **Updated versions:**
+          - OpenTelemetry Python: ${{ steps.get_versions.outputs.otel_python_version }}
+          - OpenTelemetry Contrib: ${{ steps.get_versions.outputs.otel_contrib_version }}
+
+          **Status:** Tests are running in the nightly workflow. Check the workflow results for compatibility status.
+
+          This PR will trigger additional validation via pr-build workflow including multi-version testing and linting." \
+            --base main \
+            --head "$BRANCH_NAME" \
+            --label "dependencies"
         fi
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  build-and-test:
+    runs-on: ubuntu-latest
+    needs: update-and-create-pr
+    if: needs.update-and-create-pr.outputs.has_changes == 'true'
+    
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+      with:
+        ref: nightly-deps-$(date +%Y%m%d)
+    
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.11'
+    
+    - name: Install build tools
+      run: |
+        python -m pip install --upgrade pip
+        pip install build pytest toml requests
     
     - name: Build and test
-      if: steps.check_changes.outputs.has_changes == 'true'
       uses: ./.github/actions/artifacts_build
       with:
         image_uri_with_tag: adot-python-nightly:snapshot
@@ -70,7 +113,6 @@ jobs:
         os: ubuntu-latest
 
     - name: Build and Test Lambda Layer
-      if: steps.check_changes.outputs.has_changes == 'true'
       uses: ./.github/actions/lambda_artifacts_build
       with:
         python_version: "3.12"
@@ -79,37 +121,7 @@ jobs:
         os: ubuntu-latest
 
     - name: Run contract tests
-      if: steps.check_changes.outputs.has_changes == 'true'
       run: |
         bash scripts/set-up-contract-tests.sh
         pip install pytest
         pytest contract-tests/tests
-    
-    - name: Create PR if changes exist
-      if: steps.check_changes.outputs.has_changes == 'true'
-      run: |
-        git add aws-opentelemetry-distro/pyproject.toml
-        git commit -m "chore: update OpenTelemetry dependencies to ${{ steps.get_versions.outputs.otel_python_version }}/${{ steps.get_versions.outputs.otel_contrib_version }}"
-        git push origin "$BRANCH_NAME"
-        
-        gh pr create \
-          --title "Nightly dependency update: OpenTelemetry ${{ steps.get_versions.outputs.otel_python_version }}/${{ steps.get_versions.outputs.otel_contrib_version }}" \
-          --body "Automated update of OpenTelemetry dependencies.
-
-        **Updated versions:**
-        - OpenTelemetry Python: ${{ steps.get_versions.outputs.otel_python_version }}
-        - OpenTelemetry Contrib: ${{ steps.get_versions.outputs.otel_contrib_version }}
-
-        **Tests completed:**
-        - Unit tests (tox)
-        - Wheel building
-        - Docker image building
-        - Lambda layer building and testing
-        - Contract tests
-
-        This PR will trigger additional validation via pr-build workflow including multi-version testing and linting." \
-          --base main \
-          --head "$BRANCH_NAME" \
-          --label "dependencies"
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}