ejona86 commented on a change in pull request #1000: Support token auth in gRPC upstream URL: https://github.com/apache/incubator-skywalking/pull/1000#discussion_r178089952
########## File path: apm-collector/apm-collector-agent/agent-grpc/agent-grpc-provider/src/main/java/org/apache/skywalking/apm/collector/agent/grpc/provider/AuthenticationSimpleChecker.java ########## @@ -0,0 +1,70 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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 org.apache.skywalking.apm.collector.agent.grpc.provider; + +import io.grpc.BindableService; +import io.grpc.Metadata; +import io.grpc.ServerCall; +import io.grpc.ServerCallHandler; +import io.grpc.ServerInterceptor; +import io.grpc.ServerInterceptors; +import io.grpc.Status; +import org.apache.skywalking.apm.collector.core.util.StringUtils; +import org.apache.skywalking.apm.collector.server.grpc.GRPCServer; + +/** + * Active the authentication token checker if expected token exists in application.yml + * + * @author wusheng + */ +public enum AuthenticationSimpleChecker { + INSTANCE; + + private static final Metadata.Key<String> AUTH_HEAD_HEADER_NAME = + Metadata.Key.of("Authentication", Metadata.ASCII_STRING_MARSHALLER); + + private String expectedToken = ""; + + public void build(GRPCServer gRPCServer, BindableService targetService) { + if (StringUtils.isNotEmpty(expectedToken)) { + gRPCServer.addHandler(ServerInterceptors.intercept(targetService, new ServerInterceptor() { + @Override + public <REQ, RESP> ServerCall.Listener<REQ> interceptCall(ServerCall<REQ, RESP> serverCall, + Metadata metadata, + ServerCallHandler<REQ, RESP> next) { + String token = metadata.get(AUTH_HEAD_HEADER_NAME); + if (expectedToken.equals(token)) { + return next.startCall(serverCall, metadata); + } else { + serverCall.close(Status.PERMISSION_DENIED, metadata); Review comment: This echos the request metadata as response metadata. I think you want `new Metadata()` instead of `metadata` on this line. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
