add the gap event transformer

[aai/data-router.git] / src / main / java / org / onap / aai / datarouter / policy / GapEventTransformer.java

diff --git a/src/main/java/org/onap/aai/datarouter/policy/GapEventTransformer.java b/src/main/java/org/onap/aai/datarouter/policy/GapEventTransformer.java
new file mode 100644 (file)
index 0000000..6565fc2
--- /dev/null
+++ b/src/main/java/org/onap/aai/datarouter/policy/GapEventTransformer.java
@@ -0,0 +1,105 @@
+/**
+ * ============LICENSE_START=======================================================
+ * org.onap.aai
+ * ================================================================================
+ * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
+ * Copyright © 2017-2018 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=========================================================
+ */
+package org.onap.aai.datarouter.policy;
+
+import java.io.FileNotFoundException;
+
+import org.apache.camel.Exchange;
+import org.json.JSONException;
+import org.json.JSONObject;
+import org.onap.aai.cl.api.Logger;
+import org.onap.aai.cl.eelf.LoggerFactory;
+import org.onap.aai.datarouter.logging.EntityEventPolicyMsgs;
+
+
+
+public class GapEventTransformer {
+  protected Logger logger;
+  protected static final String additionalInfo = "Response of GapEvent to transform";
+
+  protected enum ResponseType {
+    SUCCESS, PARTIAL_SUCCESS, FAILURE;
+  }
+
+  public GapEventTransformer() throws FileNotFoundException {
+    LoggerFactory loggerFactoryInstance = LoggerFactory.getInstance();
+    logger = loggerFactoryInstance.getLogger(AbstractSpikeEntityEventProcessor.class.getName());
+  }
+
+
+  public void process(Exchange exchange) throws Exception {
+
+    String payload = getExchangeBody(exchange);
+    JSONObject newPayload = transformToSpikePattern(payload);
+    exchange.getOut().setBody(newPayload.toString());
+
+  }
+
+  protected JSONObject transformToSpikePattern(String payload) {
+    JSONObject payloadJson = new JSONObject(payload);
+    JSONObject payloadEntity = payloadJson.getJSONObject("entity");
+    JSONObject payloadProperties = payloadEntity.getJSONObject("properties");
+    String payloadId = payloadEntity.getString("id");
+    String payloadType = payloadEntity.getString("type");
+
+    JSONObject newPayload = new JSONObject();
+    newPayload.put("operation", "UPDATE");
+    JSONObject newPayloadVertex = new JSONObject();
+    newPayloadVertex.put("key", payloadId);
+    newPayloadVertex.put("type", payloadType);
+    newPayloadVertex.put("properties", payloadProperties);
+    newPayload.put("vertex", newPayloadVertex);
+    return newPayload;
+  }
+
+  protected String getExchangeBody(Exchange exchange) {
+    String uebPayload = exchange.getIn().getBody().toString();
+    if (uebPayload == null || !isJSONValid(uebPayload)) {
+      uebPayload = exchange.getIn().getBody(String.class);
+      if (uebPayload == null || !isJSONValid(uebPayload)) {
+        returnWithError(exchange, uebPayload, "Invalid Payload");
+        return null;
+      }
+    }
+    return uebPayload;
+  }
+
+  private boolean isJSONValid(String test) {
+    try {
+      new JSONObject(test);
+    } catch (JSONException ex) {
+      return false;
+    }
+    return true;
+  }
+
+  protected void returnWithError(Exchange exchange, String payload, String errorMsg) {
+    logger.error(EntityEventPolicyMsgs.DISCARD_EVENT_NONVERBOSE, errorMsg);
+    logger.debug(EntityEventPolicyMsgs.DISCARD_EVENT_VERBOSE, errorMsg, payload);
+    setResponse(exchange, ResponseType.FAILURE, additionalInfo);
+  }
+
+  protected void setResponse(Exchange exchange, ResponseType responseType, String additionalInfo) {
+
+    exchange.getOut().setHeader("ResponseType", responseType.toString());
+    exchange.getOut().setBody(additionalInfo);
+  }
+}