ci: update external account integration test to use bazel (googleapis#16137)

Author: scotthart

.github/workflows/external-account-integration.yml

@@ -7,6 +7,9 @@ on:
         required: true
         description: "The ref we want to compile"
         type: string
+  push:
+    branches:
+      - "ci-gha-*"
 
 permissions:
   contents: read
@@ -28,56 +31,25 @@ jobs:
     steps:
     - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
       with:
-        ref: ${{ inputs.checkout-ref }}
-    - id: auth
-      uses: google-github-actions/auth@v2
-      with:
-        create_credentials_file: true
-        credentials_json: ${{ secrets.BUILD_CACHE_KEY }}
-    - name: Set up Cloud SDK
-      uses: google-github-actions/setup-gcloud@v2
-    - name: vcpkg-version
-      id: vcpkg-version
-      run: |
-        echo "version=$(cat ci/etc/vcpkg-version.txt)" >> "${GITHUB_OUTPUT}"
-      shell: bash
-    - name: install ninja and CMake
-      run: |
-        rm /usr/local/bin/cmake
-        sudo apt install ninja-build cmake
-    - name: download-sccache
-      working-directory: "${{runner.temp}}"
-      run: |
-        curl -fsSL https://github.com/mozilla/sccache/releases/download/v0.7.1/sccache-v0.7.1-x86_64-unknown-linux-musl.tar.gz | \
-          tar -zxf - --strip-components=1 && \
-        sudo mv sccache /usr/bin/sccache && \
-        sudo chmod +x /usr/bin/sccache
-    - name: download-vcpkg
-      working-directory: "${{runner.temp}}"
-      run: |
-        mkdir -p vcpkg
-        curl -fsSL "https://github.com/microsoft/vcpkg/archive/${STEPS_VCPKG_VERSION_OUTPUTS_VERSION}.tar.gz" |
-            tar -C vcpkg --strip-components=1 -zxf -
-        vcpkg/bootstrap-vcpkg.sh -disableMetrics
-      env:
-        STEPS_VCPKG_VERSION_OUTPUTS_VERSION: ${{ steps.vcpkg-version.outputs.version }}
-    # First compile the code using the identity with access to the build cache
-    - run: |
-        env VCPKG_ROOT="${{ runner.temp }}/vcpkg" ci/gha/builds/external-account.sh
-    # Then switch to the BYOID identity and run the integration test
+        ref: ${{ inputs.checkout-ref || github.sha }}
+    # Use BYOID identity and run the integration test
     - id: byoid-auth
       if: '!github.event.pull_request.head.repo.fork'
       name: 'Authenticate to GCP'
-      uses: 'google-github-actions/auth@v2'
+      uses: 'google-github-actions/auth@v3'
       with:
         create_credentials_file: true
         workload_identity_provider: 'projects/49427430084/locations/global/workloadIdentityPools/github-wif-pool/providers/github-wif-provider'
         service_account: 'github-actions@cloud-cpp-identity-federation.iam.gserviceaccount.com'
-    - run: |
-        ctest --test-dir cmake-out --output-on-failure -R common_internal_external_account_integration_test
-    env:
-      SCCACHE_GCS_BUCKET: cloud-cpp-gha-cache
-      SCCACHE_GCS_KEY_PREFIX: sccache/ubuntu-22.04/${{ github.job }}
-      SCCACHE_GCS_RW_MODE: READ_WRITE
-      SCCACHE_IGNORE_SERVER_IO_ERROR: 1
-      VCPKG_BINARY_SOURCES: x-gcs,gs://cloud-cpp-gha-cache/vcpkg-cache/ubuntu-22.04/${{ github.job }},readwrite
+    - name: Run integration tests
+      if: '!github.event.pull_request.head.repo.fork'
+      run: |
+        bazelisk test \
+          --test_output=all \
+          --verbose_failures=true \
+          --keep_going \
+          --experimental_convenience_symlinks=ignore \
+          --remote_upload_local_results=false \
+          --test_env=GOOGLE_APPLICATION_CREDENTIALS="${GOOGLE_APPLICATION_CREDENTIALS}" \
+          --test_env=GOOGLE_CLOUD_CPP_TEST_WIF_BUCKET="cloud-cpp-wif-test-bucket" \
+          //google/cloud:internal_external_account_integration_test

ci/gha/builds/external-account.sh

@@ -18,36 +18,17 @@ set -euo pipefail
 
 source "$(dirname "$0")/../../lib/init.sh"
 source module ci/gha/builds/lib/linux.sh
-source module ci/gha/builds/lib/cmake.sh
-source module ci/gha/builds/lib/ctest.sh
+source module ci/gha/builds/lib/bazel.sh
+source module ci/lib/io.sh
 
-mapfile -t args < <(cmake::common_args)
-mapfile -t vcpkg_args < <(cmake::vcpkg_args)
-mapfile -t ctest_args < <(ctest::common_args)
+mapfile -t args < <(bazel::common_args)
+mapfile -t test_args < <(bazel::test_args)
 
-# This is a build to test External Accounts. This is a feature to use accounts
-# from providers other than Google to access Google services. In this case we
-# are using "GitHub Actions" as the provider.
-# The External Accounts feature is sometimes known as Workload Identity
-# Federation, and sometimes BYOID (Bring Your Own ID).
-features=(
-  # Enable the smallest set of libraries libraries that will compile gRPC and
-  # REST-based authentication components and tests.
-  storage
-  iam
-  bigtable
+targets=(
+  "//google/cloud:internal_external_account_integration_test"
 )
-enable=$(printf ";%s" "${features[@]}")
-enable=${enable:1}
 
-io::log_h1 "Starting Build"
-TIMEFORMAT="==> 🕑 CMake configuration done in %R seconds"
+io::log_h1 "Building Targets"
 time {
-  io::run cmake "${args[@]}" "${vcpkg_args[@]}" -DGOOGLE_CLOUD_CPP_ENABLE="${enable}"
-}
-
-TIMEFORMAT="==> 🕑 CMake build done in %R seconds"
-time {
-  # Compile only the integration test we need for this build
-  io::run cmake --build cmake-out --target common_internal_external_account_integration_test
+  io::run bazelisk "${args[@]}" build "${test_args[@]}" "${targets[@]}"
 }