Update to consume and publish events in new format

[aai/champ.git] / champ-service / src / main / java / org / onap / champ / event / envelope / GraphEventEnvelope.java

diff --git a/champ-service/src/main/java/org/onap/champ/event/envelope/GraphEventEnvelope.java b/champ-service/src/main/java/org/onap/champ/event/envelope/GraphEventEnvelope.java
new file mode 100644 (file)
index 0000000..7958a3a
--- /dev/null
+++ b/champ-service/src/main/java/org/onap/champ/event/envelope/GraphEventEnvelope.java
@@ -0,0 +1,98 @@
+/**
+ * ============LICENSE_START==========================================
+ * org.onap.aai
+ * ===================================================================
+ * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
+ * Copyright © 2017 Amdocs
+ * ===================================================================
+ * 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============================================
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ */
+package org.onap.champ.event.envelope;
+
+import javax.ws.rs.core.Response.Status;
+import org.onap.champ.event.GraphEvent;
+import org.onap.champ.exception.ChampServiceException;
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+
+public class GraphEventEnvelope {
+
+    private GraphEventHeader header;
+    private GraphEvent body;
+
+    /**
+     * Serializer/deserializer for converting to/from JSON.
+     */
+    private static final Gson gson = new GsonBuilder().disableHtmlEscaping().setPrettyPrinting().create();
+
+    public GraphEventEnvelope(GraphEvent event) {
+        this.header = new GraphEventHeader.Builder().requestId(event.getTransactionId()).build();
+        this.body = event;
+    }
+
+    public GraphEventEnvelope(GraphEventHeader header, GraphEvent body) {
+        this.header = header;
+        this.body = body;
+    }
+
+    public GraphEventHeader getHeader() {
+        return header;
+    }
+
+    public void setHeader(GraphEventHeader header) {
+        this.header = header;
+    }
+
+    public GraphEvent getBody() {
+        return body;
+    }
+
+    public void setBody(GraphEvent body) {
+        this.body = body;
+    }
+
+    /**
+     * Serializes this Vertex object into a JSON string.
+     *
+     * @return - A JSON format string representation of this Vertex.
+     */
+    public String toJson() {
+        return gson.toJson(this);
+    }
+
+    /**
+     * Deserializes the provided JSON string into a Event Envelope object.
+     *
+     * @param json the JSON string to produce the Event Envelope from.
+     * @return an Event Envelope object.
+     * @throws ChampServiceException
+     */
+    public static GraphEventEnvelope fromJson(String json) throws ChampServiceException {
+        try {
+            if (json == null || json.isEmpty()) {
+                throw new ChampServiceException("Empty or null JSON string.", Status.BAD_REQUEST);
+            }
+            return gson.fromJson(json, GraphEventEnvelope.class);
+        } catch (Exception ex) {
+            throw new ChampServiceException("Unable to parse JSON string: ", Status.BAD_REQUEST);
+        }
+    }
+
+    @Override
+    public String toString() {
+        return toJson();
+    }
+
+}