feat: relocate GoogleJsonClientFeature from java-core to gax (#1655)

* feat: relocate GoogleJsonClientFeature from java-core to gax

Author: mpeddada1

gax/src/main/java/com/google/api/gax/nativeimage/GoogleJsonClientFeature.java

@@ -0,0 +1,118 @@
+/*
+ * Copyright 2022 Google LLC
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google LLC nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.google.api.gax.nativeimage;
+
+import static com.google.api.gax.nativeimage.NativeImageUtils.registerClassForReflection;
+
+import com.oracle.svm.core.annotate.AutomaticFeature;
+import com.oracle.svm.core.configure.ResourcesRegistry;
+import org.graalvm.nativeimage.ImageSingletons;
+import org.graalvm.nativeimage.hosted.Feature;
+import org.graalvm.nativeimage.impl.ConfigurationCondition;
+
+/** Configures Native Image settings for the Google JSON Client. */
+@AutomaticFeature
+final class GoogleJsonClientFeature implements Feature {
+
+  private static final String GOOGLE_API_CLIENT_CLASS =
+      "com.google.api.client.googleapis.services.json.AbstractGoogleJsonClient";
+
+  private static final String GOOGLE_API_CLIENT_REQUEST_CLASS =
+      "com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest";
+
+  private static final String GENERIC_JSON_CLASS = "com.google.api.client.json.GenericJson";
+
+  @Override
+  public void beforeAnalysis(BeforeAnalysisAccess access) {
+    loadApiClient(access);
+    loadHttpClient(access);
+    loadMiscClasses(access);
+  }
+
+  private void loadApiClient(BeforeAnalysisAccess access) {
+    // For com.google.api-client:google-api-client
+    Class<?> googleApiClientClass = access.findClassByName(GOOGLE_API_CLIENT_CLASS);
+
+    if (googleApiClientClass != null) {
+      // All reachable instances of the AbstractGoogleJsonClient must be registered.
+      access.registerSubtypeReachabilityHandler(
+          (duringAccess, subtype) -> registerClassForReflection(access, subtype.getName()),
+          googleApiClientClass);
+
+      // All reachable instances of the AbstractGoogleJsonClientRequest must be registered.
+      access.registerSubtypeReachabilityHandler(
+          (duringAccess, subtype) -> registerClassForReflection(access, subtype.getName()),
+          access.findClassByName(GOOGLE_API_CLIENT_REQUEST_CLASS));
+
+      // Resources
+      ResourcesRegistry resourcesRegistry = ImageSingletons.lookup(ResourcesRegistry.class);
+      resourcesRegistry.addResources(
+          ConfigurationCondition.alwaysTrue(),
+          "\\Qcom/google/api/client/googleapis/google-api-client.properties\\E");
+      resourcesRegistry.addResources(
+          ConfigurationCondition.alwaysTrue(), "\\Qcom/google/api/client/googleapis/google.p12\\E");
+      resourcesRegistry.addResources(
+          ConfigurationCondition.alwaysTrue(),
+          "\\Qcom/google/api/client/http/google-http-client.properties\\E");
+    }
+  }
+
+  private void loadHttpClient(BeforeAnalysisAccess access) {
+    // For com.google.http-client:google-http-client
+    Class<?> genericJsonClass = access.findClassByName(GENERIC_JSON_CLASS);
+
+    if (genericJsonClass != null) {
+      // All reachable instances of GenericJson must be registered.
+      access.registerSubtypeReachabilityHandler(
+          (duringAccess, subtype) -> registerClassForReflection(access, subtype.getName()),
+          genericJsonClass);
+
+      registerClassForReflection(access, "com.google.api.client.util.GenericData");
+      registerClassForReflection(access, "com.google.api.client.json.webtoken.JsonWebToken");
+      registerClassForReflection(access, "com.google.api.client.json.webtoken.JsonWebToken$Header");
+      registerClassForReflection(
+          access, "com.google.api.client.json.webtoken.JsonWebToken$Payload");
+      registerClassForReflection(
+          access, "com.google.api.client.json.webtoken.JsonWebSignature$Header");
+      registerClassForReflection(access, "com.google.api.client.json.webtoken.JsonWebSignature");
+      registerClassForReflection(access, "com.google.api.client.http.UrlEncodedContent");
+      registerClassForReflection(access, "com.google.api.client.http.GenericUrl");
+      registerClassForReflection(access, "com.google.api.client.http.HttpRequest");
+      registerClassForReflection(access, "com.google.api.client.http.HttpHeaders");
+    }
+  }
+
+  private void loadMiscClasses(BeforeAnalysisAccess access) {
+    registerClassForReflection(access, "com.google.common.util.concurrent.AbstractFuture");
+
+    registerClassForReflection(access, "com.google.common.util.concurrent.AbstractFuture$Waiter");
+  }
+}