ci: downstream check for native image tests (#771)

.github/workflows/downstream-native-image.yaml

@@ -0,0 +1,41 @@
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+# Keeping this file separate as the dependencies check would use more
+# repositories than needed this downstream check for GraalVM native image
+# compilation.
+name: downstream
+jobs:
+  # GraalVM job ensures the compatibility of GraaVM version
+  graalvm:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        graalvm: [22.1.0]
+        java: [11, 17]
+        repo:
+          # GAPIC library that doesn't use a real GCP project in integration tests
+          - orgpolicy
+    steps:
+      - uses: actions/checkout@v2
+      - uses: stCarolas/setup-maven@v4
+        with:
+          maven-version: 3.8.1
+      - uses: ayltai/setup-graalvm@v1
+        with:
+          java-version: ${{matrix.java}}
+          # When a new version of native-maven-plugin fails to run in a downstream
+          # library, it's likely to be an incompatibility with the GraalVM version.
+          # In that case, you need to upgrade the Docker container used in the
+          # tests in the downstream repositories (not just this value below).
+          # Example: https://github.com/googleapis/testing-infra-docker/pull/195
+          graalvm-version: ${{matrix.graalvm}}
+          native-image: true
+      - run: java -version
+      - run: sudo apt-get update -y
+      - run: sudo apt-get install libxml2-utils
+      - run: .kokoro/downstream-client-library-check.sh ${{matrix.repo}} graalvm

.github/workflows/downstream.yaml

@@ -156,4 +156,4 @@ jobs:
     - run: java -version
     - run: sudo apt-get update -y
     - run: sudo apt-get install libxml2-utils
-    - run: .kokoro/downstream-client-library-check.sh ${{matrix.repo}}
+    - run: .kokoro/downstream-client-library-check.sh ${{matrix.repo}} test

.kokoro/downstream-client-library-check.sh

@@ -18,6 +18,9 @@ set -eo pipefail
 set -x
 
 CLIENT_LIBRARY=$1
+
+# Example JOB_TYPE: "test" or "graalvm"
+export JOB_TYPE=$2
 ## Get the directory of the build script
 scriptDir="$(realpath "$(dirname "${BASH_SOURCE[0]}")")"
 ## cd to the parent directory, i.e. the root of the git repo
@@ -59,7 +62,5 @@ if [[ $CLIENT_LIBRARY == "bigtable" ]]; then
   popd
 fi
 
-mvn verify install -B -V -ntp -fae \
--Dmaven.javadoc.skip=true \
--Dgcloud.download.skip=true \
--Denforcer.skip=true 
+# This reads the JOB_TYPE environmental variable ("test" or "graalvm")
+.kokoro/build.sh