2 * Copyright © 2019 Bell Canada
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 package org.onap.ccsdk.cds.sdclistener.client;
19 import io.grpc.CallOptions;
20 import io.grpc.Channel;
21 import io.grpc.ClientCall;
22 import io.grpc.ClientInterceptor;
23 import io.grpc.ForwardingClientCall;
24 import io.grpc.Metadata;
25 import io.grpc.Metadata.Key;
26 import io.grpc.MethodDescriptor;
27 import org.springframework.beans.factory.annotation.Value;
28 import org.springframework.boot.context.properties.ConfigurationProperties;
29 import org.springframework.stereotype.Component;
32 * To provide authentication with GRPC server.
34 @ConfigurationProperties("listenerservice")
36 public class SdcListenerAuthClientInterceptor implements ClientInterceptor {
38 @Value("${listenerservice.config.authHeader}")
39 private String basicAuth;
42 public <ReqT, RespT> ClientCall<ReqT, RespT> interceptCall(MethodDescriptor<ReqT, RespT> methodDescriptor,
43 CallOptions callOptions, Channel channel) {
44 Key<String> authHeader = Key.of("Authorization", Metadata.ASCII_STRING_MARSHALLER);
45 return new ForwardingClientCall.SimpleForwardingClientCall<ReqT, RespT>(
46 channel.newCall(methodDescriptor, callOptions)) {
48 public void start(Listener<RespT> responseListener, Metadata headers) {
49 headers.put(authHeader, basicAuth);
50 super.start(responseListener, headers);