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/*
* Copyright (C) 2019 Bell Canada.
*
* 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 org.onap.ccsdk.sli.adaptors.grpc.cds;
import io.grpc.CallOptions;
import io.grpc.Channel;
import io.grpc.ClientCall;
import io.grpc.ClientInterceptor;
import io.grpc.ForwardingClientCall;
import io.grpc.Metadata;
import io.grpc.Metadata.Key;
import io.grpc.MethodDescriptor;
import org.apache.http.HttpHeaders;
import org.onap.ccsdk.sli.adaptors.grpc.GrpcProperties;
public class BasicAuthClientInterceptor implements ClientInterceptor {
private GrpcProperties props;
public BasicAuthClientInterceptor(GrpcProperties props) {
this.props = props;
}
@Override
public <ReqT, RespT> ClientCall<ReqT, RespT> interceptCall(
MethodDescriptor<ReqT, RespT> method,
CallOptions callOptions,
Channel channel) {
Key<String> authHeader = Key.of(HttpHeaders.AUTHORIZATION, Metadata.ASCII_STRING_MARSHALLER);
return new ForwardingClientCall.SimpleForwardingClientCall<ReqT, RespT>(
channel.newCall(method, callOptions)) {
@Override
public void start(Listener<RespT> responseListener, Metadata headers) {
headers.put(authHeader, props.getAuth());
super.start(responseListener, headers);
}
};
}
}
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