Adds Grpc.newManagedChannel(String, ChannelCredentials, NameResolverRegistry)

Author: AgraVator

api/src/main/java/io/grpc/Grpc.java

@@ -101,6 +101,15 @@ public static ManagedChannelBuilder<?> newChannelBuilder(
     return ManagedChannelRegistry.getDefaultRegistry().newChannelBuilder(target, creds);
   }
 
+  /**
+   * Creates a channel builder with a target string, credentials and nameResolverRegistry.
+   */
+  public static ManagedChannelBuilder<?> newChannelBuilderForNameResolverRegistry(String target,
+      ChannelCredentials creds, NameResolverRegistry nameResolverRegistry) {
+    return ManagedChannelRegistry.getDefaultRegistry().newChannelBuilder(nameResolverRegistry,
+      target, creds);
+  }
+
   /**
    * Creates a channel builder from a host, port, and credentials. The host and port are combined to
    * form an authority string and then passed to {@link #newChannelBuilder(String,

netty/src/test/java/io/grpc/netty/UdsNettyChannelProviderTest.java

@@ -28,6 +28,7 @@
 import io.grpc.ManagedChannelProvider;
 import io.grpc.ManagedChannelProvider.NewChannelBuilderResult;
 import io.grpc.ManagedChannelRegistryAccessor;
+import io.grpc.NameResolverRegistry;
 import io.grpc.TlsChannelCredentials;
 import io.grpc.stub.StreamObserver;
 import io.grpc.testing.GrpcCleanupRule;
@@ -120,6 +121,19 @@ public void managedChannelRegistry_newChannelBuilder() {
     channel.shutdownNow();
   }
 
+  @Test
+  public void managedChannelRegistry_newChannelBuilderForNameResolverRegistry() {
+    Assume.assumeTrue(Utils.isEpollAvailable());
+    ManagedChannelBuilder<?> managedChannelBuilder
+            = Grpc.newChannelBuilderForNameResolverRegistry("unix:///sock.sock",
+             InsecureChannelCredentials.create(), NameResolverRegistry.getDefaultRegistry());
+    assertThat(managedChannelBuilder).isNotNull();
+    ManagedChannel channel = managedChannelBuilder.build();
+    assertThat(channel).isNotNull();
+    assertThat(channel.authority()).isEqualTo("/sock.sock");
+    channel.shutdownNow();
+  }
+
   @Test
   public void udsClientServerTestUsingProvider() throws IOException {
     Assume.assumeTrue(Utils.isEpollAvailable());