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Diffstat (limited to 'search-data-service-app/src/main/java/org/onap/aai/sa/searchdbabstraction/util/ElasticSearchPayloadTranslator.java')
-rw-r--r-- | search-data-service-app/src/main/java/org/onap/aai/sa/searchdbabstraction/util/ElasticSearchPayloadTranslator.java | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/search-data-service-app/src/main/java/org/onap/aai/sa/searchdbabstraction/util/ElasticSearchPayloadTranslator.java b/search-data-service-app/src/main/java/org/onap/aai/sa/searchdbabstraction/util/ElasticSearchPayloadTranslator.java new file mode 100644 index 0000000..d3dd3e1 --- /dev/null +++ b/search-data-service-app/src/main/java/org/onap/aai/sa/searchdbabstraction/util/ElasticSearchPayloadTranslator.java @@ -0,0 +1,101 @@ +/** + * ============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 com.jayway.jsonpath.DocumentContext; +import com.jayway.jsonpath.JsonPath; +import java.io.File; +import java.io.FileInputStream; +import java.io.IOException; +import java.util.List; +import java.util.Map; +import org.apache.commons.io.IOUtils; +import org.json.JSONArray; +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.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"; + + private ElasticSearchPayloadTranslator() { // Do not instantiate + } + + /** + * Using JSON Path query to filter objects to translate the payload to ES compatible version The filter queries and + * the replacement attributes are configured in the es-payload-translation.json file. + * + * @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 + "]", + "(unknown)"); + String pathToTranslationFile = CONFIG_DIRECTORY + File.separator + ES_PAYLOAD_TRANSLATION_FILE; + + try { + JSONObject translationConfigPayload = + new JSONObject(IOUtils.toString(new FileInputStream(new File(pathToTranslationFile)), "UTF-8")); + JSONArray attrTranslations = translationConfigPayload.getJSONArray("attr-translations"); + DocumentContext payloadToTranslate = JsonPath.parse(source); + + for (Object obj : attrTranslations) { + JSONObject jsonObj = ((JSONObject) obj); + String query = jsonObj.get("query").toString(); + JSONObject attrToUpdate = (JSONObject) jsonObj.get("update"); + List<Map<String, Object>> filteredObjects = payloadToTranslate.read(query); + for (Map<String, Object> objMap : filteredObjects) { + objMap.putAll(attrToUpdate.toMap()); + } + } + + logger.info(SearchDbMsgs.PROCESS_PAYLOAD_QUERY, + "Payload after translation: " + payloadToTranslate.jsonString()); + return payloadToTranslate.jsonString(); + } catch (JSONException ex) { + logger.error(SearchDbMsgs.FILTERS_CONFIG_FAILURE, ex, ES_PAYLOAD_TRANSLATION_FILE, ex.getMessage()); + throw new IOException("Payload translation configuration looks corrupted. Please correct!", ex); + } catch (IOException ex) { + logger.error(SearchDbMsgs.FILTERS_CONFIG_FAILURE, ex, ES_PAYLOAD_TRANSLATION_FILE, ex.getMessage()); + throw new IOException("Error in configuring payload translation file. Please check if it exists.", ex); + } + } +} |