1 files changed, 86 insertions, 0 deletions
diff --git a/src/main/java/org/onap/dcae/common/DataChangeEventListener.java b/src/main/java/org/onap/dcae/common/DataChangeEventListener.java
new file mode 100755
index 0000000..6e13f73
--- /dev/null
+++ b/src/main/java/org/onap/dcae/common/DataChangeEventListener.java
@@ -0,0 +1,86 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * org.onap.dcaegen2.collectors.restconf
+ * ================================================================================
+ * Copyright (C) 2018-2019 Huawei. 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.dcae.common;
+
+import org.glassfish.jersey.media.sse.EventListener;
+import org.glassfish.jersey.media.sse.InboundEvent;
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+import org.onap.dcae.RestConfCollector;
+import org.onap.dcae.controller.PersistentEventConnection;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class DataChangeEventListener implements EventListener {
+    private static final Logger log = LoggerFactory.getLogger(DataChangeEventListener.class);
+    private PersistentEventConnection conn;
+
+    public DataChangeEventListener(PersistentEventConnection conn) {
+        this.conn = conn;
+    }
+
+    @Override
+    public void onEvent(InboundEvent event) {
+        try {
+            log.info("SSE Event is received");
+            String s = event.readData();
+            jsonType type = isJSONValid(s);
+            if (type == jsonType.OBJECT) {
+                JSONObject jsonObj = new JSONObject(s);
+                EventData ev = new EventData(this.conn, jsonObj);
+                log.info("SSE Event in json " + jsonObj.toString());
+                RestConfCollector.handleEvents(ev);
+            } else if (type == jsonType.ARRAY) {
+                JSONArray jsonArr = new JSONArray(s);
+                for (int j = 0; j < jsonArr.length(); j++) {
+                    JSONObject jsonObj = jsonArr.getJSONObject(j);
+                    EventData ev = new EventData(this.conn, jsonObj);
+                    log.info("SSE Event in json " + jsonObj.toString());
+                    RestConfCollector.handleEvents(ev);
+                }
+            } else {
+                log.info("Received heart beat ");
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    private enum jsonType {
+        OBJECT, ARRAY, NONE;
+    }
+
+    public jsonType isJSONValid(String test) {
+        try {
+            new JSONObject(test);
+            log.info("Received a Json object");
+        } catch (JSONException ex) {
+            try {
+                new JSONArray(test);
+                return jsonType.ARRAY;
+            } catch (JSONException ex1) {
+                return jsonType.NONE;
+            }
+        }
+        return jsonType.OBJECT;
+    }
+}