| /* |
| * Copyright 2019 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 com.google.common.annotations.VisibleForTesting; |
| import io.grpc.Attributes; |
| import io.grpc.ForwardingServerBuilder; |
| import io.grpc.Internal; |
| import io.grpc.Server; |
| import io.grpc.ServerBuilder; |
| import io.grpc.ServerCredentials; |
| import io.grpc.Status; |
| import io.grpc.netty.InternalNettyServerBuilder; |
| import io.grpc.netty.NettyServerBuilder; |
| import io.grpc.xds.internal.sds.SdsProtocolNegotiators; |
| import io.grpc.xds.internal.sds.ServerWrapperForXds; |
| |
| /** |
| * A version of {@link ServerBuilder} to create xDS managed servers that will use SDS to set up SSL |
| * with peers. Note, this is not ready to use yet. |
| */ |
| public final class XdsServerBuilder extends ForwardingServerBuilder<XdsServerBuilder> { |
| |
| private final NettyServerBuilder delegate; |
| private final int port; |
| private ErrorNotifier errorNotifier; |
| |
| private XdsServerBuilder(NettyServerBuilder nettyDelegate, int port) { |
| this.delegate = nettyDelegate; |
| this.port = port; |
| } |
| |
| @Override |
| @Internal |
| protected ServerBuilder<?> delegate() { |
| return delegate; |
| } |
| |
| /** Set the {@link ErrorNotifier}. Pass null to unset a previously set value. */ |
| public XdsServerBuilder errorNotifier(ErrorNotifier errorNotifier) { |
| this.errorNotifier = errorNotifier; |
| return this; |
| } |
| |
| /** |
| * Unsupported call. Users should only use {@link #forPort(int, ServerCredentials)}. |
| */ |
| public static ServerBuilder<?> forPort(int port) { |
| throw new UnsupportedOperationException( |
| "Unsupported call - use forPort(int, ServerCredentials)"); |
| } |
| |
| /** Creates a gRPC server builder for the given port. */ |
| public static XdsServerBuilder forPort(int port, ServerCredentials serverCredentials) { |
| NettyServerBuilder nettyDelegate = NettyServerBuilder.forPort(port, serverCredentials); |
| return new XdsServerBuilder(nettyDelegate, port); |
| } |
| |
| @Override |
| public Server build() { |
| return buildServer(new XdsClientWrapperForServerSds(port)); |
| } |
| |
| /** |
| * Creates a Server using the given xdsClient. |
| */ |
| @VisibleForTesting |
| ServerWrapperForXds buildServer( |
| XdsClientWrapperForServerSds xdsClient) { |
| InternalNettyServerBuilder.eagAttributes(delegate, Attributes.newBuilder() |
| .set(SdsProtocolNegotiators.SERVER_XDS_CLIENT, xdsClient) |
| .build()); |
| return new ServerWrapperForXds(delegate.build(), xdsClient, errorNotifier); |
| } |
| |
| /** Watcher to receive error notifications from xDS control plane during {@code start()}. */ |
| public interface ErrorNotifier { |
| |
| void onError(Status error); |
| } |
| } |