core,netty: add ID to NettyServer (#3745)

These are already WithLogId:
 ManagedChannelImpl, InternalSubchannel, ServerTransport

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

@@ -25,7 +25,8 @@ public final class LogId {
   private static final AtomicLong idAlloc = new AtomicLong();
 
   /**
-   * @param tag a loggable tag associated with this ID.
+   * @param tag a loggable tag associated with this tag. The ID that is allocated is guaranteed
+   *            to be unique and increasing, irrespective of the tag.
    */
   public static LogId allocate(String tag) {
     return new LogId(tag, idAlloc.incrementAndGet());

netty/src/main/java/io/grpc/netty/NettyServer.java

@@ -23,10 +23,12 @@ import static io.netty.channel.ChannelOption.SO_KEEPALIVE;
 
 import io.grpc.ServerStreamTracer;
 import io.grpc.internal.InternalServer;
+import io.grpc.internal.LogId;
 import io.grpc.internal.ServerListener;
 import io.grpc.internal.ServerTransportListener;
 import io.grpc.internal.SharedResourceHolder;
 import io.grpc.internal.TransportTracer;
+import io.grpc.internal.WithLogId;
 import io.netty.bootstrap.ServerBootstrap;
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelFuture;
@@ -48,9 +50,10 @@ import javax.annotation.Nullable;
 /**
  * Netty-based server implementation.
  */
-class NettyServer implements InternalServer {
+class NettyServer implements InternalServer, WithLogId {
   private static final Logger log = Logger.getLogger(InternalServer.class.getName());
 
+  private final LogId logId = LogId.allocate(getClass().getName());
   private final SocketAddress address;
   private final Class<? extends ServerChannel> channelType;
   private final ProtocolNegotiator protocolNegotiator;
@@ -218,6 +221,11 @@ class NettyServer implements InternalServer {
     }
   }
 
+  @Override
+  public LogId getLogId() {
+    return logId;
+  }
+
   class EventLoopReferenceCounter extends AbstractReferenceCounted {
     @Override
     protected void deallocate() {