Implement StreamParser

Change-Id: I3ee50ad70bb107fa39f227af7dab67948b7dbe4b
Issue-ID: DCAEGEN2-1342
Signed-off-by: kjaniak <kornel.janiak@nokia.com>

22 files changed, 538 insertions, 34 deletions

diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/api/streams/StreamFromGsonParsers.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/api/streams/StreamFromGsonParsers.java
index 4b0223fd..9d703bb3 100644
--- a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/api/streams/StreamFromGsonParsers.java
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/api/streams/StreamFromGsonParsers.java
@@ -20,10 +20,8 @@
 
 package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.streams;
 
-import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.KafkaSinkParser;
-import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.KafkaSourceParser;
-import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap.KafkaSink;
-import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap.KafkaSource;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.*;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap.*;
 
 /**
  * @author <a href="mailto:piotr.jaszczyk@nokia.com">Piotr Jaszczyk</a>
@@ -41,4 +39,20 @@ public final class StreamFromGsonParsers {
     public static StreamFromGsonParser<KafkaSource> kafkaSourceParser() {
         return KafkaSourceParser.create();
     }
+
+    public static StreamFromGsonParser<MessageRouterSink> messageRouterSinkParser() {
+        return MessageRouterSinkParser.create();
+    }
+
+    public static StreamFromGsonParser<MessageRouterSource> messageRouterSourceParser() {
+        return MessageRouterSourceParser.create();
+    }
+
+    public static StreamFromGsonParser<DataRouterSink> dataRouterSinkParser() {
+        return DataRouterSinkParser.create();
+    }
+
+    public static StreamFromGsonParser<DataRouterSource> dataRouterSourceParser() {
+        return DataRouterSourceParser.create();
+    }
 }
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/DataRouterSinkParser.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/DataRouterSinkParser.java
new file mode 100644
index 00000000..468b6180
--- /dev/null
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/DataRouterSinkParser.java
@@ -0,0 +1,57 @@
+/*
+ * ============LICENSE_START====================================
+ * DCAEGEN2-SERVICES-SDK
+ * =========================================================
+ * Copyright (C) 2019 Nokia. All rights reserved.
+ * =========================================================
+ * 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.
+ * ============LICENSE_END=====================================
+ */
+package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.streams.StreamFromGsonParser;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap.DataRouterSink;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap.ImmutableDataRouterSink;
+
+import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.StreamsConstants.DATA_ROUTER_TYPE;
+import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.GsonUtils.*;
+import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.StreamsConstants.DMAAP_INFO_CHILD_NAME;
+
+/**
+ * @author <a href="mailto:kornel.janiak@nokia.com">Kornel Janiak</a>
+ */
+
+public final class DataRouterSinkParser implements StreamFromGsonParser<DataRouterSink> {
+    private final Gson gson;
+
+    public static DataRouterSinkParser create() {
+        return new DataRouterSinkParser(gsonInstance());
+    }
+
+    private DataRouterSinkParser(Gson gson) {
+        this.gson = gson;
+    }
+
+    public DataRouterSink unsafeParse(JsonObject input) {
+        assertStreamType(input, DATA_ROUTER_TYPE);
+
+        final JsonElement dmaapInfoJson = requiredChild(input, DMAAP_INFO_CHILD_NAME);
+
+        return gson.fromJson(dmaapInfoJson, ImmutableDataRouterSink.class);
+
+    }
+
+}
\ No newline at end of file
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/DataRouterSourceParser.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/DataRouterSourceParser.java
new file mode 100644
index 00000000..d78c3dde
--- /dev/null
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/DataRouterSourceParser.java
@@ -0,0 +1,57 @@
+/*
+ * ============LICENSE_START====================================
+ * DCAEGEN2-SERVICES-SDK
+ * =========================================================
+ * Copyright (C) 2019 Nokia. All rights reserved.
+ * =========================================================
+ * 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.
+ * ============LICENSE_END=====================================
+ */
+package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.streams.StreamFromGsonParser;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap.DataRouterSource;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap.ImmutableDataRouterSource;
+
+import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.GsonUtils.*;
+import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.StreamsConstants.DATA_ROUTER_TYPE;
+import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.StreamsConstants.DMAAP_INFO_CHILD_NAME;
+
+/**
+ * @author <a href="mailto:kornel.janiak@nokia.com">Kornel Janiak</a>
+ */
+
+public final class DataRouterSourceParser implements StreamFromGsonParser<DataRouterSource> {
+    private final Gson gson;
+
+    public static DataRouterSourceParser create() {
+        return new DataRouterSourceParser(gsonInstance());
+    }
+
+    private DataRouterSourceParser(Gson gson) {
+        this.gson = gson;
+    }
+
+    public DataRouterSource unsafeParse(JsonObject input) {
+        assertStreamType(input, DATA_ROUTER_TYPE);
+
+        final JsonElement dmaapInfoJson = requiredChild(input, DMAAP_INFO_CHILD_NAME);
+
+        return gson.fromJson(dmaapInfoJson, ImmutableDataRouterSource.class);
+
+    }
+
+}
\ No newline at end of file
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/GsonKafka.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/GsonKafka.java
index ecafd30c..2ad37a84 100644
--- a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/GsonKafka.java
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/GsonKafka.java
@@ -25,7 +25,6 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.AafCredentials;
 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap.Kafka;
-import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap.KafkaSource;
 
 /**
  * @author <a href="mailto:piotr.jaszczyk@nokia.com">Piotr Jaszczyk</a>
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/GsonMessageRouter.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/GsonMessageRouter.java
new file mode 100644
index 00000000..10c00e72
--- /dev/null
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/GsonMessageRouter.java
@@ -0,0 +1,67 @@
+/*
+ * ============LICENSE_START====================================
+ * DCAEGEN2-SERVICES-SDK
+ * =========================================================
+ * Copyright (C) 2019 Nokia. All rights reserved.
+ * =========================================================
+ * 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.
+ * ============LICENSE_END=====================================
+ */
+package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.AafCredentials;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap.MessageRouter;
+
+import java.util.Objects;
+
+/**
+ * @author <a href="mailto:kornel.janiak@nokia.com">Kornel Janiak</a>
+ */
+
+abstract class GsonMessageRouter implements MessageRouter {
+    private final MessageRouterDmaapInfo dmaapInfo;
+    private final AafCredentials aafCredentials;
+
+    GsonMessageRouter(@NotNull MessageRouterDmaapInfo dmaapInfo,
+                      @Nullable AafCredentials aafCredentials) {
+        this.dmaapInfo = Objects.requireNonNull(dmaapInfo, "dmaapInfo");
+        this.aafCredentials = aafCredentials;
+    }
+
+    @Override
+    public String topicUrl() {
+        return dmaapInfo.topicUrl();
+    }
+
+    @Override
+    public @Nullable String clientRole() {
+        return dmaapInfo.clientRole();
+    }
+
+    @Override
+    public @Nullable String clientId() {
+        return dmaapInfo.clientId();
+    }
+
+    @Override
+    public @Nullable String location() {
+        return dmaapInfo.location();
+    }
+
+    @Override
+    public @Nullable AafCredentials aafCredentials() {
+        return aafCredentials;
+    }
+}
\ No newline at end of file
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/GsonMessageRouterSink.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/GsonMessageRouterSink.java
new file mode 100644
index 00000000..da218420
--- /dev/null
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/GsonMessageRouterSink.java
@@ -0,0 +1,37 @@
+/*
+ * ============LICENSE_START====================================
+ * DCAEGEN2-SERVICES-SDK
+ * =========================================================
+ * Copyright (C) 2019 Nokia. All rights reserved.
+ * =========================================================
+ * 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.
+ * ============LICENSE_END=====================================
+ */
+package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.AafCredentials;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap.MessageRouterSink;
+
+/**
+ * @author <a href="mailto:kornel.janiak@nokia.com">Kornel Janiak</a>
+ */
+
+public class GsonMessageRouterSink extends GsonMessageRouter implements MessageRouterSink {
+    GsonMessageRouterSink(
+            @NotNull MessageRouterDmaapInfo dmaapInfo,
+            @Nullable AafCredentials aafCredentials) {
+        super(dmaapInfo, aafCredentials);
+    }
+}
\ No newline at end of file
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/GsonMessageRouterSource.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/GsonMessageRouterSource.java
new file mode 100644
index 00000000..b69c53db
--- /dev/null
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/GsonMessageRouterSource.java
@@ -0,0 +1,37 @@
+/*
+ * ============LICENSE_START====================================
+ * DCAEGEN2-SERVICES-SDK
+ * =========================================================
+ * Copyright (C) 2019 Nokia. All rights reserved.
+ * =========================================================
+ * 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.
+ * ============LICENSE_END=====================================
+ */
+package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.AafCredentials;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap.MessageRouterSource;
+
+/**
+ * @author <a href="mailto:kornel.janiak@nokia.com">Kornel Janiak</a>
+ */
+
+public class GsonMessageRouterSource extends GsonMessageRouter implements MessageRouterSource {
+    GsonMessageRouterSource(
+            @NotNull MessageRouterDmaapInfo dmaapInfo,
+            @Nullable AafCredentials aafCredentials) {
+        super(dmaapInfo, aafCredentials);
+    }
+}
\ No newline at end of file
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/GsonUtils.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/GsonUtils.java
index a813607e..a0880165 100644
--- a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/GsonUtils.java
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/GsonUtils.java
@@ -26,13 +26,17 @@ import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
 import io.vavr.Lazy;
+
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.Reader;
 import java.util.Map.Entry;
-import java.util.concurrent.atomic.AtomicReference;
 import java.util.stream.Collectors;
+
+import io.vavr.control.Option;
 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.GsonAdaptersAafCredentials;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap.GsonAdaptersDataRouterSink;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap.GsonAdaptersDataRouterSource;
 
 /**
  * @author <a href="mailto:piotr.jaszczyk@nokia.com">Piotr Jaszczyk</a>
@@ -43,6 +47,9 @@ final class GsonUtils {
         GsonBuilder gsonBuilder = new GsonBuilder();
         gsonBuilder.registerTypeAdapterFactory(new GsonAdaptersKafkaInfo());
         gsonBuilder.registerTypeAdapterFactory(new GsonAdaptersAafCredentials());
+        gsonBuilder.registerTypeAdapterFactory(new GsonAdaptersMessageRouterDmaapInfo());
+        gsonBuilder.registerTypeAdapterFactory(new GsonAdaptersDataRouterSink());
+        gsonBuilder.registerTypeAdapterFactory(new GsonAdaptersDataRouterSource());
         return gsonBuilder.create();
     });
 
@@ -64,6 +71,10 @@ final class GsonUtils {
         return requiredChild(parent, childName).getAsString();
     }
 
+    static Option<String> optionalString(JsonObject parent, String childName) {
+            return Option.of(parent.get(childName).getAsString());
+    }
+
     static JsonElement requiredChild(JsonObject parent, String childName) {
         if (parent.has(childName)) {
             return parent.get(childName);
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/KafkaSinkParser.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/KafkaSinkParser.java
index 393fe40f..f9a546c2 100644
--- a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/KafkaSinkParser.java
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/KafkaSinkParser.java
@@ -20,37 +20,36 @@
 
 package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson;
 
-import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.GsonUtils.assertStreamType;
-import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.GsonUtils.gsonInstance;
-import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.GsonUtils.requiredChild;
-
 import com.google.gson.Gson;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.streams.StreamFromGsonParser;
 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap.KafkaSink;
 
+import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.GsonUtils.*;
+import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.StreamsConstants.KAFKA_INFO_CHILD_NAME;
+import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.StreamsConstants.KAFKA_TYPE;
+
 /**
  * @author <a href="mailto:piotr.jaszczyk@nokia.com">Piotr Jaszczyk</a>
  * @since 1.1.4
  */
-public class KafkaSinkParser implements StreamFromGsonParser<KafkaSink> {
-
+public final class KafkaSinkParser implements StreamFromGsonParser<KafkaSink> {
     private final Gson gson;
 
     public static KafkaSinkParser create() {
         return new KafkaSinkParser(gsonInstance());
     }
 
-    KafkaSinkParser(Gson gson) {
+    private KafkaSinkParser(Gson gson) {
         this.gson = gson;
     }
 
     @Override
     public KafkaSink unsafeParse(JsonObject input) {
-        assertStreamType(input, "kafka");
+        assertStreamType(input, KAFKA_TYPE);
 
-        final JsonElement kafkaInfoJson = requiredChild(input, "kafka_info");
+        final JsonElement kafkaInfoJson = requiredChild(input, KAFKA_INFO_CHILD_NAME);
         final KafkaInfo kafkaInfo = gson.fromJson(kafkaInfoJson, ImmutableKafkaInfo.class);
 
         return new GsonKafkaSink(kafkaInfo, null);
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/KafkaSourceParser.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/KafkaSourceParser.java
index 8b48a2a4..08c02b47 100644
--- a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/KafkaSourceParser.java
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/KafkaSourceParser.java
@@ -20,36 +20,36 @@
 
 package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson;
 
-import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.GsonUtils.assertStreamType;
-import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.GsonUtils.gsonInstance;
-import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.GsonUtils.requiredChild;
-
 import com.google.gson.Gson;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.streams.StreamFromGsonParser;
 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap.KafkaSource;
 
+import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.GsonUtils.*;
+import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.StreamsConstants.KAFKA_INFO_CHILD_NAME;
+import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.StreamsConstants.KAFKA_TYPE;
+
 /**
  * @author <a href="mailto:piotr.jaszczyk@nokia.com">Piotr Jaszczyk</a>
  * @since 1.1.4
  */
-public class KafkaSourceParser implements StreamFromGsonParser<KafkaSource> {
+public final class KafkaSourceParser implements StreamFromGsonParser<KafkaSource> {
     private final Gson gson;
 
     public static KafkaSourceParser create() {
         return new KafkaSourceParser(gsonInstance());
     }
 
-    KafkaSourceParser(Gson gson) {
+    private KafkaSourceParser(Gson gson) {
         this.gson = gson;
     }
 
     @Override
     public KafkaSource unsafeParse(JsonObject input) {
-        assertStreamType(input, "kafka");
+        assertStreamType(input, KAFKA_TYPE);
 
-        final JsonElement kafkaInfoJson = requiredChild(input, "kafka_info");
+        final JsonElement kafkaInfoJson = requiredChild(input, KAFKA_INFO_CHILD_NAME);
         final KafkaInfo kafkaInfo = gson.fromJson(kafkaInfoJson, ImmutableKafkaInfo.class);
 
         return new GsonKafkaSource(kafkaInfo, null);
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/MessageRouterDmaapInfo.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/MessageRouterDmaapInfo.java
new file mode 100644
index 00000000..ced5ad55
--- /dev/null
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/MessageRouterDmaapInfo.java
@@ -0,0 +1,42 @@
+/*
+ * ============LICENSE_START====================================
+ * DCAEGEN2-SERVICES-SDK
+ * =========================================================
+ * Copyright (C) 2019 Nokia. All rights reserved.
+ * =========================================================
+ * 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.
+ * ============LICENSE_END=====================================
+ */
+package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson;
+
+import com.google.gson.annotations.SerializedName;
+import org.immutables.gson.Gson;
+import org.immutables.value.Value;
+import org.jetbrains.annotations.Nullable;
+
+@Gson.TypeAdapters
+@Value.Immutable
+public interface MessageRouterDmaapInfo {
+
+    @SerializedName("topic_url")
+    String topicUrl();
+
+    @SerializedName("client_role")
+    @Nullable String clientRole();
+
+    @SerializedName("client_id")
+    @Nullable String clientId();
+
+    @SerializedName("location")
+    @Nullable String location();
+}
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/MessageRouterSinkParser.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/MessageRouterSinkParser.java
new file mode 100644
index 00000000..56f53932
--- /dev/null
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/MessageRouterSinkParser.java
@@ -0,0 +1,57 @@
+/*
+ * ============LICENSE_START====================================
+ * DCAEGEN2-SERVICES-SDK
+ * =========================================================
+ * Copyright (C) 2019 Nokia. All rights reserved.
+ * =========================================================
+ * 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.
+ * ============LICENSE_END=====================================
+ */
+package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.streams.StreamFromGsonParser;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.AafCredentials;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.ImmutableAafCredentials;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap.MessageRouterSink;
+
+import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.StreamsConstants.DMAAP_INFO_CHILD_NAME;
+import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.StreamsConstants.MESSAGE_ROUTER_TYPE;
+import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.GsonUtils.*;
+
+public final class MessageRouterSinkParser implements StreamFromGsonParser<MessageRouterSink> {
+
+    private final Gson gson;
+
+    public static MessageRouterSinkParser create() {
+        return new MessageRouterSinkParser(gsonInstance());
+    }
+
+    private MessageRouterSinkParser(Gson gson) {
+        this.gson = gson;
+    }
+
+    public MessageRouterSink unsafeParse(JsonObject input) {
+        assertStreamType(input, MESSAGE_ROUTER_TYPE);
+
+        final AafCredentials aafCredentials = gson.fromJson(input, ImmutableAafCredentials.class);
+
+        final JsonElement dmaapInfoJson = requiredChild(input, DMAAP_INFO_CHILD_NAME);
+        final MessageRouterDmaapInfo dmaapInfo = gson.fromJson(dmaapInfoJson, ImmutableMessageRouterDmaapInfo.class);
+
+        return new GsonMessageRouterSink(dmaapInfo, aafCredentials);
+
+    }
+}
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/MessageRouterSourceParser.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/MessageRouterSourceParser.java
new file mode 100644
index 00000000..25cf9e0e
--- /dev/null
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/MessageRouterSourceParser.java
@@ -0,0 +1,61 @@
+/*
+ * ============LICENSE_START====================================
+ * DCAEGEN2-SERVICES-SDK
+ * =========================================================
+ * Copyright (C) 2019 Nokia. All rights reserved.
+ * =========================================================
+ * 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.
+ * ============LICENSE_END=====================================
+ */
+package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.streams.StreamFromGsonParser;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.AafCredentials;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.ImmutableAafCredentials;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap.MessageRouterSource;
+
+import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.GsonUtils.*;
+import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.StreamsConstants.DMAAP_INFO_CHILD_NAME;
+import static org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson.StreamsConstants.MESSAGE_ROUTER_TYPE;
+
+/**
+ * @author <a href="mailto:kornel.janiak@nokia.com">Kornel Janiak</a>
+ */
+
+public final class MessageRouterSourceParser implements StreamFromGsonParser<MessageRouterSource> {
+    private final Gson gson;
+
+    public static MessageRouterSourceParser create() {
+        return new MessageRouterSourceParser(gsonInstance());
+    }
+
+    private MessageRouterSourceParser(Gson gson) {
+        this.gson = gson;
+    }
+
+    public MessageRouterSource unsafeParse(JsonObject input) {
+        assertStreamType(input, MESSAGE_ROUTER_TYPE);
+
+        final AafCredentials aafCredentials = gson.fromJson(input, ImmutableAafCredentials.class);
+
+        final JsonElement dmaapInfoJson = requiredChild(input, DMAAP_INFO_CHILD_NAME);
+        final MessageRouterDmaapInfo dmaapInfo = gson.fromJson(dmaapInfoJson, ImmutableMessageRouterDmaapInfo.class);
+
+        return new GsonMessageRouterSource(dmaapInfo, aafCredentials);
+
+    }
+
+}
\ No newline at end of file
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/StreamsConstants.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/StreamsConstants.java
new file mode 100644
index 00000000..a9dd0c4d
--- /dev/null
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/impl/streams/gson/StreamsConstants.java
@@ -0,0 +1,38 @@
+/*
+ * ============LICENSE_START====================================
+ * DCAEGEN2-SERVICES-SDK
+ * =========================================================
+ * Copyright (C) 2019 Nokia. All rights reserved.
+ * =========================================================
+ * 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.
+ * ============LICENSE_END=====================================
+ */
+package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.impl.streams.gson;
+
+/**
+ * @author <a href="mailto:kornel.janiak@nokia.com">Kornel Janiak</a>
+ */
+
+public final class StreamsConstants {
+
+    public static final String DATA_ROUTER_TYPE = "data_router";
+
+    public static final String MESSAGE_ROUTER_TYPE = "message_router";
+
+    public static final String KAFKA_TYPE = "kafka";
+
+    public static final String DMAAP_INFO_CHILD_NAME = "dmaap_info";
+
+    public static final String KAFKA_INFO_CHILD_NAME = "kafka_info";
+
+}
\ No newline at end of file
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/AafCredentials.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/AafCredentials.java
index ecb0b553..e8d63192 100644
--- a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/AafCredentials.java
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/AafCredentials.java
@@ -21,6 +21,7 @@
 package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams;
 
 
+import com.google.gson.annotations.SerializedName;
 import org.immutables.gson.Gson;
 import org.immutables.value.Value;
 import org.jetbrains.annotations.Nullable;
@@ -35,7 +36,9 @@ import org.onap.dcaegen2.services.sdk.rest.services.annotations.ExperimentalApi;
 @Gson.TypeAdapters
 public interface AafCredentials {
 
+    @SerializedName("aaf_username")
     @Nullable String username();
 
+    @SerializedName("aaf_password")
     @Nullable String password();
 }
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/DataRouter.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/DataRouter.java
index ba26b103..b4b5549e 100644
--- a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/DataRouter.java
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/DataRouter.java
@@ -21,6 +21,7 @@
 package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap;
 
 
+import com.google.gson.annotations.SerializedName;
 import org.jetbrains.annotations.Nullable;
 import org.onap.dcaegen2.services.sdk.rest.services.annotations.ExperimentalApi;
 
@@ -31,9 +32,12 @@ import org.onap.dcaegen2.services.sdk.rest.services.annotations.ExperimentalApi;
 @ExperimentalApi
 public interface DataRouter {
 
-    String location();
+    @SerializedName("location")
+    @Nullable String location();
 
+    @SerializedName("username")
     @Nullable String username();
 
+    @SerializedName("password")
     @Nullable String password();
 }
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/DataRouterSink.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/DataRouterSink.java
index a8aa5cbb..60d91009 100644
--- a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/DataRouterSink.java
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/DataRouterSink.java
@@ -21,6 +21,8 @@
 package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap;
 
 
+import com.google.gson.annotations.SerializedName;
+import org.immutables.gson.Gson;
 import org.immutables.value.Value;
 import org.jetbrains.annotations.Nullable;
 import org.onap.dcaegen2.services.sdk.rest.services.annotations.ExperimentalApi;
@@ -30,14 +32,18 @@ import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.Sin
  * @author <a href="mailto:piotr.jaszczyk@nokia.com">Piotr Jaszczyk</a>
  * @version 1.2.1
  */
+@Gson.TypeAdapters
 @ExperimentalApi
 @Value.Immutable
-public abstract class DataRouterSink implements DataRouter, SinkStream {
+public interface DataRouterSink extends DataRouter, SinkStream {
 
-    abstract String publisherUrl();
+    @SerializedName("publish_url")
+    String publishUrl();
 
-    abstract String publisherId();
+    @SerializedName("publisher_id")
+    @Nullable String publisherId();
 
-    abstract @Nullable String logUrl();
+    @SerializedName("log_url")
+    @Nullable String logUrl();
 
 }
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/DataRouterSource.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/DataRouterSource.java
index ac8362db..b6dedb7a 100644
--- a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/DataRouterSource.java
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/DataRouterSource.java
@@ -21,7 +21,10 @@
 package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap;
 
 
+import com.google.gson.annotations.SerializedName;
+import org.immutables.gson.Gson;
 import org.immutables.value.Value;
+import org.jetbrains.annotations.Nullable;
 import org.onap.dcaegen2.services.sdk.rest.services.annotations.ExperimentalApi;
 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.SourceStream;
 
@@ -29,11 +32,15 @@ import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.Sou
  * @author <a href="mailto:piotr.jaszczyk@nokia.com">Piotr Jaszczyk</a>
  * @version 1.2.1
  */
+@Gson.TypeAdapters
 @ExperimentalApi
 @Value.Immutable
-public abstract class DataRouterSource implements DataRouter, SourceStream {
+public interface DataRouterSource extends DataRouter, SourceStream {
 
-    abstract String deliveryUrl();
+    // in future, since crucial need to be verified if could be nullable
+    @SerializedName("delivery_url")
+    @Nullable String deliveryUrl();
 
-    abstract String subscriberId();
+    @SerializedName("subscriber_id")
+    @Nullable String subscriberId();
 }
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/KafkaSink.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/KafkaSink.java
index 514881fe..09322e4a 100644
--- a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/KafkaSink.java
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/KafkaSink.java
@@ -30,6 +30,6 @@ import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.Sin
  */
 @ExperimentalApi
 @Value.Immutable
-public abstract interface KafkaSink extends Kafka, SinkStream {
+public interface KafkaSink extends Kafka, SinkStream {
 
 }
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/MessageRouter.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/MessageRouter.java
index 76c6f6db..7ed720d0 100644
--- a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/MessageRouter.java
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/MessageRouter.java
@@ -21,6 +21,7 @@
 package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap;
 
 
+import com.google.gson.annotations.SerializedName;
 import org.jetbrains.annotations.Nullable;
 import org.onap.dcaegen2.services.sdk.rest.services.annotations.ExperimentalApi;
 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.AafCredentials;
@@ -32,13 +33,18 @@ import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.Aaf
 @ExperimentalApi
 public interface MessageRouter {
 
+    @SerializedName("topic_url")
     String topicUrl();
 
+    @SerializedName("client_role")
     @Nullable String clientRole();
 
+    @SerializedName("client_id")
     @Nullable String clientId();
 
+    @SerializedName("location")
     @Nullable String location();
 
+    @SerializedName("aaf_credentials")
     @Nullable AafCredentials aafCredentials();
 }
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/MessageRouterSink.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/MessageRouterSink.java
index 7584bac4..74f88104 100644
--- a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/MessageRouterSink.java
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/MessageRouterSink.java
@@ -21,6 +21,7 @@
 package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap;
 
 
+import org.immutables.gson.Gson;
 import org.immutables.value.Value;
 import org.onap.dcaegen2.services.sdk.rest.services.annotations.ExperimentalApi;
 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.SinkStream;
@@ -31,6 +32,6 @@ import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.Sin
  */
 @ExperimentalApi
 @Value.Immutable
-public abstract class MessageRouterSink implements MessageRouter, SinkStream {
+public interface MessageRouterSink extends MessageRouter, SinkStream {
 
 }
diff --git a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/MessageRouterSource.java b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/MessageRouterSource.java
index e9599a5e..66520f5d 100644
--- a/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/MessageRouterSource.java
+++ b/rest-services/cbs-client/src/main/java/org/onap/dcaegen2/services/sdk/rest/services/cbs/client/model/streams/dmaap/MessageRouterSource.java
@@ -21,6 +21,7 @@
 package org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.dmaap;
 
 
+import org.immutables.gson.Gson;
 import org.immutables.value.Value;
 import org.onap.dcaegen2.services.sdk.rest.services.annotations.ExperimentalApi;
 import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.SourceStream;
@@ -31,6 +32,6 @@ import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.streams.Sou
  */
 @ExperimentalApi
 @Value.Immutable
-public abstract class MessageRouterSource implements MessageRouter, SourceStream {
+public interface MessageRouterSource extends MessageRouter, SourceStream {
 
 }