gerrit.onap Code Review - ccsdk/cds.git/blob

   1 /*
   2  * Copyright © 2019 Bell Canada
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.onap.ccsdk.cds.sdclistener.client;
  17
  18 import io.grpc.*;
  19 import io.grpc.Metadata.Key;
  20 import org.springframework.beans.factory.annotation.Value;
  21 import org.springframework.boot.context.properties.ConfigurationProperties;
  22 import org.springframework.stereotype.Component;
  23
  24 /**
  25  * To provide authentication with GRPC server.
  26  */
  27 @ConfigurationProperties("listenerservice")
  28 @Component
  29 public class SdcListenerAuthClientInterceptor implements ClientInterceptor {
  30
  31     @Value("${listenerservice.config.authHeader}")
  32     private String basicAuth;
  33
  34     @Override
  35     public <ReqT, RespT> ClientCall<ReqT, RespT> interceptCall(MethodDescriptor<ReqT, RespT> methodDescriptor,
  36                                                                CallOptions callOptions, Channel channel) {
  37         Key<String> authHeader = Key.of("Authorization", Metadata.ASCII_STRING_MARSHALLER);
  38         return new ForwardingClientCall.SimpleForwardingClientCall<ReqT, RespT>(
  39             channel.newCall(methodDescriptor, callOptions)) {
  40             @Override
  41             public void start(Listener<RespT> responseListener, Metadata headers) {
  42                 headers.put(authHeader, basicAuth);
  43                 super.start(responseListener, headers);
  44             }
  45         };
  46     }
  47 }