googleapis: Move GoogleCloudToProdNameResolver from xds (1.45.x backport)

googleapis/build.gradle

@@ -0,0 +1,36 @@
+plugins {
+    id "java-library"
+    id "maven-publish"
+
+    id "ru.vyarus.animalsniffer"
+}
+
+description = 'gRPC: googleapis'
+
+dependencies {
+    api project(':grpc-api')
+    implementation project(':grpc-alts'),
+                   project(':grpc-core'),
+                   project(':grpc-xds'),
+                   libraries.guava
+    testImplementation project(':grpc-core').sourceSets.test.output
+
+    signature "org.codehaus.mojo.signature:java17:1.0@signature"
+}
+
+publishing {
+    publications {
+        maven(MavenPublication) {
+            pom {
+                withXml {
+                    // Since internal APIs are used, pin the version.
+                    asNode().dependencies.'*'.findAll() { dep ->
+                        dep.artifactId.text() in ['grpc-alts', 'grpc-xds']
+                    }.each() { core ->
+                        core.version*.value = "[" + core.version.text() + "]"
+                    }
+                }
+            }
+        }
+    }
+}

xds/src/main/java/io/grpc/xds/GoogleCloudToProdNameResolver.java → googleapis/src/main/java/io/grpc/googleapis/GoogleCloudToProdNameResolver.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package io.grpc.xds;
+package io.grpc.googleapis;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
@@ -32,14 +32,14 @@
 import io.grpc.internal.GrpcUtil;
 import io.grpc.internal.SharedResourceHolder;
 import io.grpc.internal.SharedResourceHolder.Resource;
-import io.grpc.xds.XdsNameResolverProvider.XdsClientPoolFactory;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.Reader;
 import java.net.HttpURLConnection;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.URL;
+import java.util.Map;
 import java.util.Random;
 import java.util.concurrent.Executor;
 
@@ -70,7 +70,7 @@ final class GoogleCloudToProdNameResolver extends NameResolver {
   private final String authority;
   private final SynchronizationContext syncContext;
   private final Resource<Executor> executorResource;
-  private final XdsClientPoolFactory xdsClientPoolFactory;
+  private final BootstrapSetter bootstrapSetter;
   private final NameResolver delegate;
   private final Random rand;
   private final boolean usingExecutorResource;
@@ -84,17 +84,16 @@ final class GoogleCloudToProdNameResolver extends NameResolver {
   private boolean shutdown;
 
   GoogleCloudToProdNameResolver(URI targetUri, Args args, Resource<Executor> executorResource,
-      XdsClientPoolFactory xdsClientPoolFactory) {
-    this(targetUri, args, executorResource, new Random(), xdsClientPoolFactory,
+      BootstrapSetter bootstrapSetter) {
+    this(targetUri, args, executorResource, new Random(), bootstrapSetter,
         NameResolverRegistry.getDefaultRegistry().asFactory());
   }
 
   @VisibleForTesting
   GoogleCloudToProdNameResolver(URI targetUri, Args args, Resource<Executor> executorResource,
-      Random rand, XdsClientPoolFactory xdsClientPoolFactory,
-      NameResolver.Factory nameResolverFactory) {
+      Random rand, BootstrapSetter bootstrapSetter, NameResolver.Factory nameResolverFactory) {
     this.executorResource = checkNotNull(executorResource, "executorResource");
-    this.xdsClientPoolFactory = checkNotNull(xdsClientPoolFactory, "xdsClientPoolFactory");
+    this.bootstrapSetter = checkNotNull(bootstrapSetter, "bootstrapSetter");
     this.rand = checkNotNull(rand, "rand");
     String targetPath = checkNotNull(checkNotNull(targetUri, "targetUri").getPath(), "targetPath");
     Preconditions.checkArgument(
@@ -159,7 +158,7 @@ public void run() {
             @Override
             public void run() {
               if (!shutdown && finalRawBootstrap != null) {
-                xdsClientPoolFactory.setBootstrapOverride(finalRawBootstrap);
+                bootstrapSetter.setBootstrap(finalRawBootstrap);
                 delegate.start(listener);
                 succeeded = true;
               }
@@ -284,4 +283,8 @@ public HttpURLConnection createConnection(String url) throws IOException {
   interface HttpConnectionProvider {
     HttpURLConnection createConnection(String url) throws IOException;
   }
+
+  public interface BootstrapSetter {
+    void setBootstrap(Map<String, ?> bootstrap);
+  }
 }

xds/src/main/java/io/grpc/xds/GoogleCloudToProdNameResolverProvider.java → googleapis/src/main/java/io/grpc/googleapis/GoogleCloudToProdNameResolverProvider.java

@@ -14,14 +14,16 @@
  * limitations under the License.
  */
 
-package io.grpc.xds;
+package io.grpc.googleapis;
 
 import io.grpc.Internal;
 import io.grpc.NameResolver;
 import io.grpc.NameResolver.Args;
 import io.grpc.NameResolverProvider;
 import io.grpc.internal.GrpcUtil;
+import io.grpc.xds.InternalSharedXdsClientPoolProvider;
 import java.net.URI;
+import java.util.Map;
 
 /**
  * A provider for {@link GoogleCloudToProdNameResolver}.
@@ -36,7 +38,7 @@ public NameResolver newNameResolver(URI targetUri, Args args) {
     if (SCHEME.equals(targetUri.getScheme())) {
       return new GoogleCloudToProdNameResolver(
           targetUri, args, GrpcUtil.SHARED_CHANNEL_EXECUTOR,
-          SharedXdsClientPoolProvider.getDefaultProvider());
+          new SharedXdsClientPoolProviderBootstrapSetter());
     }
     return null;
   }
@@ -55,4 +57,12 @@ protected boolean isAvailable() {
   protected int priority() {
     return 4;
   }
+
+  private static final class SharedXdsClientPoolProviderBootstrapSetter
+      implements GoogleCloudToProdNameResolver.BootstrapSetter {
+    @Override
+    public void setBootstrap(Map<String, ?> bootstrap) {
+      InternalSharedXdsClientPoolProvider.setDefaultProviderBootstrapOverride(bootstrap);
+    }
+  }
 }

googleapis/src/main/resources/META-INF/services/io.grpc.NameResolverProvider

@@ -0,0 +1 @@
+io.grpc.googleapis.GoogleCloudToProdNameResolverProvider

xds/src/test/java/io/grpc/xds/GoogleCloudToProdNameResolverProviderTest.java → googleapis/src/test/java/io/grpc/googleapis/GoogleCloudToProdNameResolverProviderTest.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package io.grpc.xds;
+package io.grpc.googleapis;
 
 import static com.google.common.truth.Truth.assertThat;
 import static org.junit.Assert.fail;

xds/src/test/java/io/grpc/xds/GoogleCloudToProdNameResolverTest.java → googleapis/src/test/java/io/grpc/googleapis/GoogleCloudToProdNameResolverTest.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package io.grpc.xds;
+package io.grpc.googleapis;
 
 import static com.google.common.truth.Truth.assertThat;
 import static org.mockito.Mockito.mock;
@@ -33,12 +33,10 @@
 import io.grpc.Status;
 import io.grpc.Status.Code;
 import io.grpc.SynchronizationContext;
+import io.grpc.googleapis.GoogleCloudToProdNameResolver.HttpConnectionProvider;
 import io.grpc.internal.FakeClock;
 import io.grpc.internal.GrpcUtil;
-import io.grpc.internal.ObjectPool;
 import io.grpc.internal.SharedResourceHolder.Resource;
-import io.grpc.xds.GoogleCloudToProdNameResolver.HttpConnectionProvider;
-import io.grpc.xds.XdsNameResolverProvider.XdsClientPoolFactory;
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.net.HttpURLConnection;
@@ -50,7 +48,6 @@
 import java.util.Random;
 import java.util.concurrent.Executor;
 import java.util.concurrent.atomic.AtomicReference;
-import javax.annotation.Nullable;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Rule;
@@ -88,7 +85,7 @@ public void uncaughtException(Thread t, Throwable e) {
       .setChannelLogger(mock(ChannelLogger.class))
       .build();
   private final FakeClock fakeExecutor = new FakeClock();
-  private final FakeXdsClientPoolFactory fakeXdsClientPoolFactory = new FakeXdsClientPoolFactory();
+  private final FakeBootstrapSetter fakeBootstrapSetter = new FakeBootstrapSetter();
   private final Resource<Executor> fakeExecutorResource = new Resource<Executor>() {
     @Override
     public Executor create() {
@@ -144,7 +141,7 @@ public HttpURLConnection createConnection(String url) throws IOException {
       }
     };
     resolver = new GoogleCloudToProdNameResolver(
-        TARGET_URI, args, fakeExecutorResource, random, fakeXdsClientPoolFactory,
+        TARGET_URI, args, fakeExecutorResource, random, fakeBootstrapSetter,
         nsRegistry.asFactory());
     resolver.setHttpConnectionProvider(httpConnections);
   }
@@ -178,7 +175,7 @@ public void onGcpAndNoProvidedBootstrapDelegateToXds() {
     fakeExecutor.runDueTasks();
     assertThat(delegatedResolver.keySet()).containsExactly("xds");
     verify(Iterables.getOnlyElement(delegatedResolver.values())).start(mockListener);
-    Map<String, ?> bootstrap = fakeXdsClientPoolFactory.bootstrapRef.get();
+    Map<String, ?> bootstrap = fakeBootstrapSetter.bootstrapRef.get();
     Map<String, ?> node = (Map<String, ?>) bootstrap.get("node");
     assertThat(node).containsExactly(
         "id", "C2P-991614323",
@@ -246,23 +243,13 @@ public String getDefaultScheme() {
     }
   }
 
-  private static final class FakeXdsClientPoolFactory implements XdsClientPoolFactory {
+  private static final class FakeBootstrapSetter
+      implements GoogleCloudToProdNameResolver.BootstrapSetter {
     private final AtomicReference<Map<String, ?>> bootstrapRef = new AtomicReference<>();
 
     @Override
-    public void setBootstrapOverride(Map<String, ?> bootstrap) {
+    public void setBootstrap(Map<String, ?> bootstrap) {
       bootstrapRef.set(bootstrap);
     }
-
-    @Override
-    @Nullable
-    public ObjectPool<XdsClient> get() {
-      throw new UnsupportedOperationException("Should not be called");
-    }
-
-    @Override
-    public ObjectPool<XdsClient> getOrCreate() {
-      throw new UnsupportedOperationException("Should not be called");
-    }
   }
 }

settings.gradle

@@ -37,6 +37,7 @@ include ":grpc-protobuf"
 include ":grpc-protobuf-lite"
 include ":grpc-netty"
 include ":grpc-netty-shaded"
+include ":grpc-googleapis"
 include ":grpc-grpclb"
 include ":grpc-testing"
 include ":grpc-testing-proto"
@@ -63,6 +64,7 @@ project(':grpc-protobuf').projectDir = "$rootDir/protobuf" as File
 project(':grpc-protobuf-lite').projectDir = "$rootDir/protobuf-lite" as File
 project(':grpc-netty').projectDir = "$rootDir/netty" as File
 project(':grpc-netty-shaded').projectDir = "$rootDir/netty/shaded" as File
+project(':grpc-googleapis').projectDir = "$rootDir/googleapis" as File
 project(':grpc-grpclb').projectDir = "$rootDir/grpclb" as File
 project(':grpc-testing').projectDir = "$rootDir/testing" as File
 project(':grpc-testing-proto').projectDir = "$rootDir/testing-proto" as File

xds/src/main/java/io/grpc/xds/InternalSharedXdsClientPoolProvider.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2022 The gRPC Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.grpc.xds;
+
+import io.grpc.Internal;
+import java.util.Map;
+
+/**
+ * Accessor for global factory for managing XdsClient instance.
+ */
+@Internal
+public final class InternalSharedXdsClientPoolProvider {
+  // Prevent instantiation
+  private InternalSharedXdsClientPoolProvider() {}
+
+  public static void setDefaultProviderBootstrapOverride(Map<String, ?> bootstrap) {
+    SharedXdsClientPoolProvider.getDefaultProvider().setBootstrapOverride(bootstrap);
+  }
+}

xds/src/main/resources/META-INF/services/io.grpc.NameResolverProvider

@@ -1,2 +1 @@
 io.grpc.xds.XdsNameResolverProvider
-io.grpc.xds.GoogleCloudToProdNameResolverProvider