+/**
+ * ============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.sa.searchdbabstraction.util;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+
+import org.apache.commons.io.IOUtils;
+import org.json.JSONArray;
+import org.json.JSONObject;
+import org.onap.aai.cl.api.Logger;
+import org.onap.aai.cl.eelf.LoggerFactory;
+import org.onap.aai.sa.searchdbabstraction.logging.SearchDbMsgs;
+
+
+/**
+ * This class as the name suggests is to translate the payload of PUT & POST requests
+ * to ElasticSearch (ES) to its compatible syntax, specially compatible with ES v6 or above.
+ *
+ * For example, data type such as "string" is now replaced by "text" or "keyword".
+ *
+ * So this class will make those translations reading off from a json configuration file, therefore
+ * the configuration can be updated with new translations as and when required without touching the code.
+ *
+ * @author EDWINL
+ *
+ */
+public class ElasticSearchPayloadTranslator {
+
+ private static Logger logger = LoggerFactory.getInstance().getLogger(ElasticSearchPayloadTranslator.class.getName());
+ private static final String CONFIG_DIRECTORY = System.getProperty("CONFIG_HOME");
+ private static final String ES_PAYLOAD_TRANSLATION_FILE = "es-payload-translation.json";
+
+
+ /**
+ * Using String replacement to translate the payload to ES compatible version
+ *
+ * @param source
+ * @return translated payload in String
+ * @throws IOException
+ */
+ public static String translateESPayload(String source) throws IOException {
+ logger.info(SearchDbMsgs.PROCESS_PAYLOAD_QUERY, "translateESPayload, method-params[ source=" + source + "]");
+ String pathToTranslationFile = CONFIG_DIRECTORY + File.separator + ES_PAYLOAD_TRANSLATION_FILE;
+
+ String translatedPayload = source.replaceAll("\\s+", ""); // removing whitespaces
+ JSONObject translationConfigPayload = new JSONObject(IOUtils.toString(
+ new FileInputStream(new File(pathToTranslationFile)), "UTF-8"));
+
+ JSONArray attrTranslations = translationConfigPayload.getJSONArray("attr-translations");
+
+ for(Object obj : attrTranslations) {
+ JSONObject jsonObj = ((JSONObject)obj);
+ String from = jsonObj.get("from").toString();
+ String to = jsonObj.get("to").toString();
+ if(translatedPayload.indexOf(from) > 0) {
+ translatedPayload = translatedPayload.replaceAll(from, to);
+ }
+ }
+
+ logger.info(SearchDbMsgs.PROCESS_PAYLOAD_QUERY, "Payload after translation: "+translatedPayload);
+ return translatedPayload;
+ }
+}