Move the Context key definition and accessor to io.grpc.

core/src/main/java/io/grpc/internal/InternalServerAccessor.java → api/src/main/java/io/grpc/InternalServer.java

@@ -14,23 +14,18 @@
  * limitations under the License.
  */
 
-package io.grpc.internal;
-
-import io.grpc.Context;
-import io.grpc.Internal;
-import io.grpc.Server;
+package io.grpc;
 
 /**
  * Internal accessor for getting the {@link Server} instance inside server RPC {@link Context}.
- * This is intended for usage internal to the gRPC team, as it's unclear to us what users would
- * need. If you *really* think you need to use this, please file an issue for us to discuss a
- * public API.
+ * This is intended for usage internal to the gRPC team. If you think you need to use
+ * this, contact the gRPC team first.
  */
 @Internal
-public class InternalServerAccessor {
-  public static final Context.Key<Server> SERVER_KEY = ServerImpl.SERVER_CONTEXT_KEY;
+public class InternalServer {
+  public static final Context.Key<Server> SERVER_CONTEXT_KEY = Server.SERVER_CONTEXT_KEY;
 
   // Prevent instantiation.
-  private InternalServerAccessor() {
+  private InternalServer() {
   }
 }

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

@@ -30,6 +30,14 @@
 @ThreadSafe
 public abstract class Server {
 
+  /**
+   * Key for accessing the {@link Server} instance inside server RPC {@link Context}. It's
+   * unclear to us what users would need. If you think you need to use this, please file an
+   * issue for us to discuss a public API.
+   */
+  protected static final Context.Key<Server> SERVER_CONTEXT_KEY =
+      Context.key("io.grpc.Server");
+
   /**
    * Bind and start the server.  After this call returns, clients may begin connecting to the
    * listening socket(s).

core/src/main/java/io/grpc/internal/ServerImpl.java

@@ -45,7 +45,6 @@
 import io.grpc.InternalLogId;
 import io.grpc.InternalServerInterceptors;
 import io.grpc.Metadata;
-import io.grpc.Server;
 import io.grpc.ServerCall;
 import io.grpc.ServerCallHandler;
 import io.grpc.ServerInterceptor;
@@ -92,7 +91,6 @@ public final class ServerImpl extends io.grpc.Server implements InternalInstrume
   private static final Logger log = Logger.getLogger(ServerImpl.class.getName());
   private static final ServerStreamListener NOOP_LISTENER = new NoopListener();
 
-  static final Context.Key<Server> SERVER_CONTEXT_KEY = Context.key("io.grpc.ServerImpl");
   private final InternalLogId logId;
   private final ObjectPool<? extends Executor> executorPool;
   /** Executor for application processing. Safe to read after {@link #start()}. */

core/src/test/java/io/grpc/internal/ServerImplTest.java

@@ -561,7 +561,7 @@ public ServerCall.Listener<String> startCall(
     Context callContext = callContextReference.get();
     assertNotNull(callContext);
     assertEquals("context added by tracer", SERVER_TRACER_ADDED_KEY.get(callContext));
-    assertEquals(server, ServerImpl.SERVER_CONTEXT_KEY.get(callContext));
+    assertEquals(server, io.grpc.InternalServer.SERVER_CONTEXT_KEY.get(callContext));
 
     streamListener.messagesAvailable(new SingleMessageProducer(STRING_MARSHALLER.stream(request)));
     assertEquals(1, executor.runDueTasks());

services/src/main/java/io/grpc/protobuf/services/ProtoReflectionService.java

@@ -26,10 +26,10 @@
 import com.google.protobuf.Descriptors.ServiceDescriptor;
 import io.grpc.BindableService;
 import io.grpc.ExperimentalApi;
+import io.grpc.InternalServer;
 import io.grpc.Server;
 import io.grpc.ServerServiceDefinition;
 import io.grpc.Status;
-import io.grpc.internal.InternalServerAccessor;
 import io.grpc.protobuf.ProtoFileDescriptorSupplier;
 import io.grpc.reflection.v1alpha.ErrorResponse;
 import io.grpc.reflection.v1alpha.ExtensionNumberResponse;
@@ -86,7 +86,7 @@ public static BindableService newInstance() {
    */
   private ServerReflectionIndex getRefreshedIndex() {
     synchronized (lock) {
-      Server server = InternalServerAccessor.SERVER_KEY.get();
+      Server server = InternalServer.SERVER_CONTEXT_KEY.get();
       ServerReflectionIndex index = serverReflectionIndexes.get(server);
       if (index == null) {
         index =