ci: showcase native check

.github/workflows/ci.yaml

@@ -208,6 +208,33 @@ jobs:
             --batch-mode \
             --no-transfer-progress
 
+  showcase-native:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v3
+      - uses: graalvm/setup-graalvm@v1
+        with:
+          version: '22.3.2'
+          java-version: '17'
+          components: 'native-image'
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+      - run: mvn -version
+      - run: native-image --version
+      - name: Install sdk-platform-java
+        run: mvn install -B -ntp -DskipTests -Dclirr.skip -Dcheckstyle.skip
+      - name: Install showcase server
+        run: |
+          sudo mkdir -p /usr/src/showcase
+          sudo chown -R ${USER} /usr/src/
+          curl --location https://github.com/googleapis/gapic-showcase/releases/download/v${SHOWCASE_VERSION}/gapic-showcase-${SHOWCASE_VERSION}-linux-amd64.tar.gz --output /usr/src/showcase/showcase-${SHOWCASE_VERSION}-linux-amd64.tar.gz
+          cd /usr/src/showcase/
+          tar -xf showcase-*
+          ./gapic-showcase run &
+          cd -
+      - name: Build native image
+        working-directory: showcase
+        run: mvn test -Pnative,-showcase -ntp -B
+
   showcase-clirr:
     if: ${{ github.base_ref != '' }} # Only execute on pull_request trigger event
     runs-on: ubuntu-22.04

showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITGdch.java

@@ -29,18 +29,21 @@
 import com.google.auth.Credentials;
 import com.google.auth.oauth2.GdchCredentials;
 import com.google.auth.oauth2.GdchCredentialsTestUtil;
+import com.google.common.truth.Truth;
 import com.google.showcase.v1beta1.EchoClient;
 import com.google.showcase.v1beta1.EchoSettings;
 import com.google.showcase.v1beta1.it.util.InterceptingMockTokenServerTransportFactory;
-import com.google.showcase.v1beta1.stub.EchoStub;
+import com.google.showcase.v1beta1.it.util.TestClientInitializer;
 import com.google.showcase.v1beta1.stub.EchoStubSettings;
 import java.io.File;
 import java.io.FileWriter;
 import java.io.IOException;
+import java.io.InputStream;
 import java.net.URI;
 import java.net.URISyntaxException;
-import java.nio.file.Path;
-import java.nio.file.Paths;
+import java.nio.file.Files;
+import java.nio.file.StandardCopyOption;
+import java.util.concurrent.TimeUnit;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Rule;
@@ -53,10 +56,11 @@
  */
 public class ITGdch {
 
-  private static final String TEST_GDCH_CREDENTIAL_FILE = "/test_gdch_credential.json";
-  private static final String CA_CERT_RESOURCE_PATH = "/fake_cert.pem";
+  private static final String CA_CERT_FILENAME = "fake_cert.pem";
+  private static final String CA_CERT_RESOURCE_PATH = "/" + CA_CERT_FILENAME;
   private static final String CA_CERT_JSON_KEY = "ca_cert_path";
-  private static final String TEMP_CREDENTIAL_JSON_FILENAME = "temp_gdch_credential.json";
+  private static final String GDCH_CREDENTIAL_FILENAME = "test_gdch_credential.json";
+  private static final String GDCH_CREDENTIAL_RESOURCE_PATH = "/" + GDCH_CREDENTIAL_FILENAME;
   private static final String GDCH_TOKEN_STRING = "1/MkSJoj1xsli0AccessToken_NKPY2";
   private static final String SID_NAME = "service-identity-name";
 
@@ -67,7 +71,6 @@ public class ITGdch {
   private EchoStubSettings stubSettings;
   private Credentials initialCredentials;
   private ClientContext context;
-  private EchoStub stub;
   private InterceptingMockTokenServerTransportFactory transportFactory;
   private String projectId;
   private URI tokenUri;
@@ -76,37 +79,44 @@ public class ITGdch {
   public void setup() throws IOException, URISyntaxException {
     transportFactory = new InterceptingMockTokenServerTransportFactory();
     prepareCredentials();
-    tempFolder.create();
     settings =
         EchoSettings.newBuilder()
             .setCredentialsProvider(FixedCredentialsProvider.create(initialCredentials))
             .build();
   }
 
   @After
-  public void tearDown() {
+  public void tearDown() throws InterruptedException {
     if (client != null) {
       client.close();
+      client.awaitTermination(TestClientInitializer.AWAIT_TERMINATION_SECONDS, TimeUnit.SECONDS);
     }
   }
 
-  private void prepareCredentials() throws IOException, URISyntaxException {
-    // compute absolute path of the CA certificate
-    Path caCertPath = Paths.get(getClass().getResource(CA_CERT_RESOURCE_PATH).toURI());
+  private void prepareCredentials() throws IOException {
+    // Copy file so it can be referenced by Path even in native-image builds
+    File caCertFile = tempFolder.newFile(CA_CERT_FILENAME);
+    try (InputStream inputStream = getClass().getResourceAsStream(CA_CERT_RESOURCE_PATH)) {
+      Truth.assertThat(inputStream).isNotNull();
+      Files.copy(inputStream, caCertFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
+    }
+    Truth.assertWithMessage(caCertFile.toPath() + " should exist")
+        .that(caCertFile.exists())
+        .isTrue();
 
     // open gdch credential json (still needs its "ca_cert_path" to point to the CA certificate
     // obtained from above)
     JsonFactory factory = new GsonFactory();
     GenericJson converted =
         factory.fromInputStream(
-            getClass().getResourceAsStream(TEST_GDCH_CREDENTIAL_FILE), GenericJson.class);
+            getClass().getResourceAsStream(GDCH_CREDENTIAL_RESOURCE_PATH), GenericJson.class);
 
     // modify and save to a temporary folder
-    converted.set(CA_CERT_JSON_KEY, caCertPath.toAbsolutePath().toString());
+    converted.set(CA_CERT_JSON_KEY, caCertFile.toPath().toAbsolutePath().toString());
     projectId = converted.get("project").toString();
     tokenUri = URI.create(converted.get("token_uri").toString());
 
-    File tempGdchCredentialFile = tempFolder.newFile(TEMP_CREDENTIAL_JSON_FILENAME);
+    File tempGdchCredentialFile = tempFolder.newFile(GDCH_CREDENTIAL_FILENAME);
     try (FileWriter fileWriter = new FileWriter(tempGdchCredentialFile)) {
       String preparedJson = converted.toPrettyString();
       fileWriter.write(preparedJson);

showcase/gapic-showcase/src/test/resources/META-INF/native-image/resource-config.json

@@ -1,3 +1,6 @@
 {
-  "resources":[{"pattern": ".*.json"}]
+  "resources": [
+    { "pattern": ".*.json" },
+    { "pattern": ".*.pem" }
+  ]
 }