Add support for CDS basic-auth

Change-Id: I22834f989afb748917aa2099b1da78c5f794bbe5
Issue-ID: CCSDK-1055
Signed-off-by: Alexis de Talhouët <adetalhouet89@gmail.com>

3 files changed, 57 insertions, 0 deletions

diff --git a/common/src/main/java/org/onap/so/client/cds/BasicAuthClientInterceptor.java b/common/src/main/java/org/onap/so/client/cds/BasicAuthClientInterceptor.java
new file mode 100644
index 0000000000..384d479501
--- /dev/null
+++ b/common/src/main/java/org/onap/so/client/cds/BasicAuthClientInterceptor.java
@@ -0,0 +1,53 @@
+/*
+ * 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.so.client.cds;
+
+import io.grpc.CallOptions;
+import io.grpc.Channel;
+import io.grpc.ClientCall;
+import io.grpc.ClientCall.Listener;
+import io.grpc.ClientInterceptor;
+import io.grpc.ForwardingClientCall;
+import io.grpc.Metadata;
+import io.grpc.Metadata.Key;
+import io.grpc.MethodDescriptor;
+
+public class BasicAuthClientInterceptor implements ClientInterceptor {
+
+    private CDSProperties props;
+
+    public BasicAuthClientInterceptor(CDSProperties 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("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.getBasicAuth());
+                super.start(responseListener, headers);
+            }
+        };
+    }
+}
diff --git a/common/src/main/java/org/onap/so/client/cds/CDSProcessingClient.java b/common/src/main/java/org/onap/so/client/cds/CDSProcessingClient.java
index 0901cf589b..1e372112f1 100644
--- a/common/src/main/java/org/onap/so/client/cds/CDSProcessingClient.java
+++ b/common/src/main/java/org/onap/so/client/cds/CDSProcessingClient.java
@@ -73,6 +73,7 @@ public class CDSProcessingClient implements AutoCloseable {
             .forAddress(props.getHost(), props.getPort())
             .nameResolverFactory(new DnsNameResolverProvider())
             .loadBalancerFactory(new PickFirstLoadBalancerProvider())
+            .intercept(new BasicAuthClientInterceptor(props))
             .usePlaintext()
             .build();
         this.handler = new CDSProcessingHandler(listener);
diff --git a/common/src/main/java/org/onap/so/client/cds/CDSProperties.java b/common/src/main/java/org/onap/so/client/cds/CDSProperties.java
index bb2a54ec98..52d1d614ed 100644
--- a/common/src/main/java/org/onap/so/client/cds/CDSProperties.java
+++ b/common/src/main/java/org/onap/so/client/cds/CDSProperties.java
@@ -21,5 +21,8 @@ import org.onap.so.client.RestProperties;
 public interface CDSProperties extends RestProperties {
 
     String getHost();
+
     int getPort();
+
+    String getBasicAuth();
 }