2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
6 * Copyright © 2017-2018 Amdocs
7 * ================================================================================
8 * Licensed under the Apache License, Version 2.0 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
12 * http://www.apache.org/licenses/LICENSE-2.0
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 * ============LICENSE_END=========================================================
21 package org.onap.aai.datarouter.policy;
23 import java.io.FileNotFoundException;
24 import java.io.IOException;
25 import java.security.NoSuchAlgorithmException;
26 import java.util.ArrayList;
27 import java.util.Arrays;
28 import java.util.Collection;
29 import java.util.HashMap;
30 import java.util.Iterator;
31 import java.util.List;
34 import org.apache.camel.Exchange;
35 import org.apache.camel.Processor;
36 import org.eclipse.persistence.dynamic.DynamicType;
37 import org.eclipse.persistence.internal.helper.DatabaseField;
38 import org.eclipse.persistence.jaxb.dynamic.DynamicJAXBContext;
39 import org.json.JSONException;
40 import org.json.JSONObject;
41 import org.onap.aai.cl.api.Logger;
42 import org.onap.aai.cl.eelf.LoggerFactory;
43 import org.onap.aai.cl.mdc.MdcContext;
44 import org.onap.aai.datarouter.entity.SpikeEventEntity;
45 import org.onap.aai.datarouter.entity.DocumentStoreDataEntity;
46 import org.onap.aai.datarouter.entity.SpikeEventVertex;
47 import org.onap.aai.datarouter.entity.OxmEntityDescriptor;
48 import org.onap.aai.datarouter.logging.EntityEventPolicyMsgs;
49 import org.onap.aai.datarouter.util.EntityOxmReferenceHelper;
50 import org.onap.aai.datarouter.util.ExternalOxmModelProcessor;
51 import org.onap.aai.datarouter.util.OxmModelLoader;
52 import org.onap.aai.datarouter.util.RouterServiceUtil;
53 import org.onap.aai.datarouter.util.SearchServiceAgent;
54 import org.onap.aai.restclient.client.Headers;
55 import org.onap.aai.restclient.client.OperationResult;
56 import org.onap.aai.restclient.rest.HttpUtil;
59 import com.fasterxml.jackson.core.JsonProcessingException;
60 import com.fasterxml.jackson.databind.JsonNode;
61 import com.fasterxml.jackson.databind.ObjectMapper;
62 import com.fasterxml.jackson.databind.ObjectWriter;
64 public class SpikeEntityEventPolicy implements Processor {
66 public static final String additionalInfo = "Response of SpikeEntityEventPolicy";
67 private static final String entitySearchSchema = "entitysearch_schema.json";
69 private Collection<ExternalOxmModelProcessor> externalOxmModelProcessors;
72 private final String ACTION_CREATE = "create";
73 private final String EVENT_VERTEX = "vertex";
74 private final static String ACTION_DELETE = "delete";
75 private final String ACTION_UPDATE = "update";
76 private final String PROCESS_SPIKE_EVENT = "Process Spike Event";
77 private final String OPERATION_KEY = "operation";
80 private final List<String> SUPPORTED_ACTIONS =
81 Arrays.asList(ACTION_CREATE, ACTION_UPDATE, ACTION_DELETE);
83 Map<String, DynamicJAXBContext> oxmVersionContextMap = new HashMap<>();
84 private String oxmVersion = null;
86 /** Agent for communicating with the Search Service. */
87 private SearchServiceAgent searchAgent = null;
88 private String entitySearchIndex;
89 private String srcDomain;
91 private Logger logger;
92 private Logger metricsLogger;
94 public enum ResponseType {
95 SUCCESS, PARTIAL_SUCCESS, FAILURE;
98 public SpikeEntityEventPolicy(SpikeEntityEventPolicyConfig config) throws FileNotFoundException {
99 LoggerFactory loggerFactoryInstance = LoggerFactory.getInstance();
100 logger = loggerFactoryInstance.getLogger(SpikeEntityEventPolicy.class.getName());
101 metricsLogger = loggerFactoryInstance.getMetricsLogger(SpikeEntityEventPolicy.class.getName());
104 srcDomain = config.getSourceDomain();
106 // Populate the index names.
107 entitySearchIndex = config.getSearchEntitySearchIndex();
109 // Instantiate the agent that we will use for interacting with the Search Service.
110 searchAgent = new SearchServiceAgent(config.getSearchCertName(), config.getSearchKeystore(),
111 config.getSearchKeystorePwd(),
112 EntityEventPolicy.concatSubUri(config.getSearchBaseUrl(), config.getSearchEndpoint()),
113 config.getSearchEndpointDocuments(), logger);
115 this.externalOxmModelProcessors = new ArrayList<>();
116 this.externalOxmModelProcessors.add(EntityOxmReferenceHelper.getInstance());
117 OxmModelLoader.registerExternalOxmModelProcessors(externalOxmModelProcessors);
118 OxmModelLoader.loadModels();
119 oxmVersionContextMap = OxmModelLoader.getVersionContextMap();
120 parseLatestOxmVersion();
123 private void parseLatestOxmVersion() {
124 int latestVersion = -1;
125 if (oxmVersionContextMap != null) {
126 Iterator it = oxmVersionContextMap.entrySet().iterator();
127 while (it.hasNext()) {
128 Map.Entry pair = (Map.Entry) it.next();
130 String version = pair.getKey().toString();
131 int versionNum = Integer.parseInt(version.substring(1, version.length()));
133 if (versionNum > latestVersion) {
134 latestVersion = versionNum;
135 oxmVersion = pair.getKey().toString();
138 logger.info(EntityEventPolicyMsgs.PROCESS_OXM_MODEL_FOUND, pair.getKey().toString());
141 logger.error(EntityEventPolicyMsgs.PROCESS_OXM_MODEL_MISSING, "");
145 public void startup() {
147 // Create the indexes in the search service if they do not already exist.
148 searchAgent.createSearchIndex(entitySearchIndex, entitySearchSchema);
149 logger.info(EntityEventPolicyMsgs.ENTITY_EVENT_POLICY_REGISTERED);
154 * Convert object to json.
156 * @param object the object
157 * @param pretty the pretty
159 * @throws JsonProcessingException the json processing exception
161 public static String convertObjectToJson(Object object, boolean pretty)
162 throws JsonProcessingException {
166 ow = new ObjectMapper().writer().withDefaultPrettyPrinter();
169 ow = new ObjectMapper().writer();
172 return ow.writeValueAsString(object);
175 public void returnWithError(Exchange exchange, String payload, String errorMsg) {
176 logger.error(EntityEventPolicyMsgs.DISCARD_EVENT_NONVERBOSE, errorMsg);
177 logger.debug(EntityEventPolicyMsgs.DISCARD_EVENT_VERBOSE, errorMsg, payload);
178 setResponse(exchange, ResponseType.FAILURE, additionalInfo);
181 public boolean isJSONValid(String test) {
183 new JSONObject(test);
184 } catch (JSONException ex) {
191 public void process(Exchange exchange) throws Exception {
193 long startTime = System.currentTimeMillis();
194 String uebPayload = exchange.getIn().getBody().toString();
195 if (uebPayload == null || !isJSONValid(uebPayload)) {
196 uebPayload = exchange.getIn().getBody(String.class);
197 if (uebPayload == null || !isJSONValid(uebPayload)) {
198 returnWithError(exchange, uebPayload, "Invalid Payload");
204 JSONObject mainJson = new JSONObject(uebPayload);
205 String action = mainJson.getString(OPERATION_KEY);
206 if (action == null || !SUPPORTED_ACTIONS.contains(action.toLowerCase())) {
207 logger.debug(EntityEventPolicyMsgs.DISCARD_EVENT_VERBOSE,
208 "Unrecognized action '" + action + "'", uebPayload);
209 logger.error(EntityEventPolicyMsgs.DISCARD_EVENT_NONVERBOSE,
210 "Unrecognized action '" + action + "'");
211 setResponse(exchange, ResponseType.FAILURE, additionalInfo);
215 // Load the UEB payload data, any errors will result in a failure and discard
217 JSONObject spikeObjVertex = getUebContentAsJson(uebPayload, EVENT_VERTEX);
218 if (spikeObjVertex == null) {
219 returnWithError(exchange, uebPayload, "Payload is missing " + EVENT_VERTEX);
223 SpikeEventVertex eventVertex = initializeSpikeEventVertex(spikeObjVertex.toString());
225 DynamicJAXBContext oxmJaxbContext = loadOxmContext(oxmVersion.toLowerCase());
226 if (oxmJaxbContext == null) {
227 logger.error(EntityEventPolicyMsgs.OXM_VERSION_NOT_SUPPORTED, oxmVersion);
228 logger.debug(EntityEventPolicyMsgs.DISCARD_EVENT_VERBOSE, "OXM version mismatch", uebPayload);
230 setResponse(exchange, ResponseType.FAILURE, additionalInfo);
236 String entityType = eventVertex.getType();
237 if (entityType == null || entityType.isEmpty()) {
238 logger.debug(EntityEventPolicyMsgs.DISCARD_EVENT_VERBOSE,
239 "Payload header missing entity type", uebPayload);
240 logger.error(EntityEventPolicyMsgs.DISCARD_EVENT_NONVERBOSE,
241 "Payload header missing entity type");
243 setResponse(exchange, ResponseType.FAILURE, additionalInfo);
247 String entityKey = eventVertex.getKey();
248 if (entityKey == null || entityKey.isEmpty()) {
249 logger.debug(EntityEventPolicyMsgs.DISCARD_EVENT_VERBOSE, "Payload vertex missing entity key",
251 logger.error(EntityEventPolicyMsgs.DISCARD_EVENT_NONVERBOSE,
252 "Payload vertex missing entity key");
254 setResponse(exchange, ResponseType.FAILURE, additionalInfo);
257 String entityLink = eventVertex.getEntityLink();
258 if (entityLink == null || entityLink.isEmpty()) {
259 logger.debug(EntityEventPolicyMsgs.DISCARD_EVENT_VERBOSE,
260 "Payload header missing entity link", uebPayload);
261 logger.error(EntityEventPolicyMsgs.DISCARD_EVENT_NONVERBOSE,
262 "Payload header missing entity link");
264 setResponse(exchange, ResponseType.FAILURE, additionalInfo);
268 // log the fact that all data are in good shape
269 logger.info(EntityEventPolicyMsgs.PROCESS_ENTITY_EVENT_POLICY_NONVERBOSE, action, entityType);
270 logger.debug(EntityEventPolicyMsgs.PROCESS_ENTITY_EVENT_POLICY_VERBOSE, action, entityType,
274 // Process for building SpikeEventEntity object
275 String[] entityTypeArr = entityType.split("-");
276 String oxmEntityType = "";
277 for (String entityWord : entityTypeArr) {
278 oxmEntityType += entityWord.substring(0, 1).toUpperCase() + entityWord.substring(1);
281 List<String> searchableAttr =
282 getOxmAttributes(oxmJaxbContext, oxmEntityType, entityType, "searchable");
283 if (searchableAttr == null) {
284 logger.error(EntityEventPolicyMsgs.DISCARD_EVENT_NONVERBOSE,
285 "Searchable attribute not found for payload entity type '" + entityType + "'");
286 logger.debug(EntityEventPolicyMsgs.DISCARD_EVENT_VERBOSE,
287 "Searchable attribute not found for payload entity type '" + entityType + "'",
290 setResponse(exchange, ResponseType.FAILURE, additionalInfo);
294 String entityPrimaryKeyFieldName =
295 getEntityPrimaryKeyFieldName(oxmJaxbContext, uebPayload, oxmEntityType, entityType);
296 if (entityPrimaryKeyFieldName == null) {
297 logger.error(EntityEventPolicyMsgs.DISCARD_EVENT_NONVERBOSE,
298 "Payload missing primary key attribute");
299 logger.debug(EntityEventPolicyMsgs.DISCARD_EVENT_VERBOSE,
300 "Payload missing primary key attribute", uebPayload);
301 setResponse(exchange, ResponseType.FAILURE, additionalInfo);
304 String entityPrimaryKeyFieldValue = lookupValueUsingKey(uebPayload, entityPrimaryKeyFieldName);
305 if (entityPrimaryKeyFieldValue.isEmpty()) {
306 logger.error(EntityEventPolicyMsgs.DISCARD_EVENT_NONVERBOSE,
307 "Payload missing primary value attribute");
308 logger.debug(EntityEventPolicyMsgs.DISCARD_EVENT_VERBOSE,
309 "Payload missing primary value attribute", uebPayload);
311 setResponse(exchange, ResponseType.FAILURE, additionalInfo);
315 SpikeEventEntity spikeEventEntity = new SpikeEventEntity();
318 * Use the OXM Model to determine the primary key field name based on the entity-type
321 spikeEventEntity.setEntityPrimaryKeyName(entityPrimaryKeyFieldName);
322 spikeEventEntity.setEntityPrimaryKeyValue(entityPrimaryKeyFieldValue);
323 spikeEventEntity.setEntityType(entityType);
324 spikeEventEntity.setLink(entityLink);
326 if (!getSearchTags(spikeEventEntity, searchableAttr, uebPayload, action)) {
327 logger.error(EntityEventPolicyMsgs.DISCARD_EVENT_NONVERBOSE,
328 "Payload missing searchable attribute for entity type '" + entityType + "'");
329 logger.debug(EntityEventPolicyMsgs.DISCARD_EVENT_VERBOSE,
330 "Payload missing searchable attribute for entity type '" + entityType + "'", uebPayload);
332 setResponse(exchange, ResponseType.FAILURE, additionalInfo);
337 spikeEventEntity.deriveFields();
339 } catch (NoSuchAlgorithmException e) {
340 logger.error(EntityEventPolicyMsgs.DISCARD_EVENT_VERBOSE, "Cannot create unique SHA digest");
341 logger.debug(EntityEventPolicyMsgs.DISCARD_EVENT_VERBOSE, "Cannot create unique SHA digest",
344 setResponse(exchange, ResponseType.FAILURE, additionalInfo);
349 handleSearchServiceOperation(spikeEventEntity, action, entitySearchIndex);
351 long stopTime = System.currentTimeMillis();
352 metricsLogger.info(EntityEventPolicyMsgs.OPERATION_RESULT_NO_ERRORS, PROCESS_SPIKE_EVENT,
353 String.valueOf(stopTime - startTime));
355 setResponse(exchange, ResponseType.SUCCESS, additionalInfo);
361 private void setResponse(Exchange exchange, ResponseType responseType, String additionalInfo) {
363 exchange.getOut().setHeader("ResponseType", responseType.toString());
364 exchange.getOut().setBody(additionalInfo);
369 * Load the UEB JSON payload, any errors would result to a failure case response.
371 private JSONObject getUebContentAsJson(String payload, String contentKey) {
373 JSONObject uebJsonObj;
374 JSONObject uebObjContent;
377 uebJsonObj = new JSONObject(payload);
378 } catch (JSONException e) {
379 logger.debug(EntityEventPolicyMsgs.UEB_INVALID_PAYLOAD_JSON_FORMAT, payload);
380 logger.error(EntityEventPolicyMsgs.UEB_INVALID_PAYLOAD_JSON_FORMAT, payload);
384 if (uebJsonObj.has(contentKey)) {
385 uebObjContent = uebJsonObj.getJSONObject(contentKey);
387 logger.debug(EntityEventPolicyMsgs.UEB_FAILED_TO_PARSE_PAYLOAD, contentKey);
388 logger.error(EntityEventPolicyMsgs.UEB_FAILED_TO_PARSE_PAYLOAD, contentKey);
392 return uebObjContent;
396 private SpikeEventVertex initializeSpikeEventVertex(String payload) {
398 SpikeEventVertex eventVertex = null;
399 ObjectMapper mapper = new ObjectMapper();
401 // Make sure that were were actually passed in a valid string.
402 if (payload == null || payload.isEmpty()) {
403 logger.debug(EntityEventPolicyMsgs.UEB_FAILED_TO_PARSE_PAYLOAD, EVENT_VERTEX);
404 logger.error(EntityEventPolicyMsgs.UEB_FAILED_TO_PARSE_PAYLOAD, EVENT_VERTEX);
409 // Marshal the supplied string into a UebEventHeader object.
411 eventVertex = mapper.readValue(payload, SpikeEventVertex.class);
412 } catch (JsonProcessingException e) {
413 logger.error(EntityEventPolicyMsgs.UEB_FAILED_UEBEVENTHEADER_CONVERSION, e.toString());
414 } catch (Exception e) {
415 logger.error(EntityEventPolicyMsgs.UEB_FAILED_UEBEVENTHEADER_CONVERSION, e.toString());
418 if (eventVertex != null) {
419 logger.debug(EntityEventPolicyMsgs.UEB_EVENT_HEADER_PARSED, eventVertex.toString());
427 private String getEntityPrimaryKeyFieldName(DynamicJAXBContext oxmJaxbContext, String payload,
428 String oxmEntityType, String entityType) {
430 DynamicType entity = oxmJaxbContext.getDynamicType(oxmEntityType);
431 if (entity == null) {
435 List<DatabaseField> list = entity.getDescriptor().getPrimaryKeyFields();
436 if (list != null && !list.isEmpty()) {
437 String keyName = list.get(0).getName();
438 return keyName.substring(0, keyName.indexOf('/'));
444 private String lookupValueUsingKey(String payload, String key) throws JSONException {
445 JsonNode jsonNode = convertToJsonNode(payload);
446 return RouterServiceUtil.recursivelyLookupJsonPayload(jsonNode, key);
450 private JsonNode convertToJsonNode(String payload) {
452 ObjectMapper mapper = new ObjectMapper();
453 JsonNode jsonNode = null;
455 jsonNode = mapper.readTree(mapper.getJsonFactory().createJsonParser(payload));
456 } catch (IOException e) {
457 logger.debug(EntityEventPolicyMsgs.FAILED_TO_PARSE_UEB_PAYLOAD, EVENT_VERTEX + " missing",
459 logger.error(EntityEventPolicyMsgs.FAILED_TO_PARSE_UEB_PAYLOAD, EVENT_VERTEX + " missing",
467 private boolean getSearchTags(SpikeEventEntity spikeEventEntity, List<String> searchableAttr,
468 String payload, String action) {
470 boolean hasSearchableAttr = false;
471 for (String searchTagField : searchableAttr) {
472 String searchTagValue;
473 if (searchTagField.equalsIgnoreCase(spikeEventEntity.getEntityPrimaryKeyName())) {
474 searchTagValue = spikeEventEntity.getEntityPrimaryKeyValue();
476 searchTagValue = this.lookupValueUsingKey(payload, searchTagField);
479 if (searchTagValue != null && !searchTagValue.isEmpty()) {
480 hasSearchableAttr = true;
481 spikeEventEntity.addSearchTagWithKey(searchTagValue, searchTagField);
484 return hasSearchableAttr;
488 * Check if OXM version is available. If available, load it.
490 private DynamicJAXBContext loadOxmContext(String version) {
491 if (version == null) {
492 logger.error(EntityEventPolicyMsgs.FAILED_TO_FIND_OXM_VERSION, version);
496 return oxmVersionContextMap.get(version);
499 private List<String> getOxmAttributes(DynamicJAXBContext oxmJaxbContext, String oxmEntityType,
500 String entityType, String fieldName) {
502 DynamicType entity = (DynamicType) oxmJaxbContext.getDynamicType(oxmEntityType);
503 if (entity == null) {
508 * Check for searchable XML tag
510 List<String> fieldValues = null;
511 Map<String, String> properties = entity.getDescriptor().getProperties();
512 for (Map.Entry<String, String> entry : properties.entrySet()) {
513 if (entry.getKey().equalsIgnoreCase(fieldName)) {
514 fieldValues = Arrays.asList(entry.getValue().split(","));
524 protected SpikeEventEntity getPopulatedEntity(JsonNode entityNode,
525 OxmEntityDescriptor resultDescriptor) {
526 SpikeEventEntity d = new SpikeEventEntity();
528 d.setEntityType(resultDescriptor.getEntityName());
530 List<String> primaryKeyValues = new ArrayList<>();
531 List<String> primaryKeyNames = new ArrayList<>();
534 for (String keyName : resultDescriptor.getPrimaryKeyAttributeName()) {
535 pkeyValue = RouterServiceUtil.getNodeFieldAsText(entityNode, keyName);
536 if (pkeyValue != null) {
537 primaryKeyValues.add(pkeyValue);
538 primaryKeyNames.add(keyName);
540 // logger.warn("getPopulatedDocument(), pKeyValue is null for entityType = " +
541 // resultDescriptor.getEntityName());
542 logger.error(EntityEventPolicyMsgs.PRIMARY_KEY_NULL_FOR_ENTITY_TYPE,
543 resultDescriptor.getEntityName());
547 final String primaryCompositeKeyValue = RouterServiceUtil.concatArray(primaryKeyValues, "/");
548 d.setEntityPrimaryKeyValue(primaryCompositeKeyValue);
549 final String primaryCompositeKeyName = RouterServiceUtil.concatArray(primaryKeyNames, "/");
550 d.setEntityPrimaryKeyName(primaryCompositeKeyName);
552 final List<String> searchTagFields = resultDescriptor.getSearchableAttributes();
555 * Based on configuration, use the configured field names for this entity-Type to build a
556 * multi-value collection of search tags for elastic search entity search criteria.
560 for (String searchTagField : searchTagFields) {
561 String searchTagValue = RouterServiceUtil.getNodeFieldAsText(entityNode, searchTagField);
562 if (searchTagValue != null && !searchTagValue.isEmpty()) {
563 d.addSearchTagWithKey(searchTagValue, searchTagField);
572 * Perform create, read, update or delete (CRUD) operation on search engine's suggestive search
575 * @param eventEntity Entity/data to use in operation
576 * @param action The operation to perform
577 * @param target Resource to perform the operation on
578 * @param allowDeleteEvent Allow delete operation to be performed on resource
580 protected void handleSearchServiceOperation(DocumentStoreDataEntity eventEntity, String action,
584 Map<String, List<String>> headers = new HashMap<>();
585 headers.put(Headers.FROM_APP_ID, Arrays.asList("DataLayer"));
586 headers.put(Headers.TRANSACTION_ID, Arrays.asList(MDC.get(MdcContext.MDC_REQUEST_ID)));
588 String entityId = eventEntity.getId();
590 if ((action.equalsIgnoreCase(ACTION_CREATE) && entityId != null)
591 || action.equalsIgnoreCase(ACTION_UPDATE)) {
593 // Run the GET to retrieve the ETAG from the search service
594 OperationResult storedEntity = searchAgent.getDocument(index, entityId);
596 if (HttpUtil.isHttpResponseClassSuccess(storedEntity.getResultCode())) {
597 List<String> etag = storedEntity.getHeaders().get(Headers.ETAG);
599 if (etag != null && !etag.isEmpty()) {
600 headers.put(Headers.IF_MATCH, etag);
602 logger.error(EntityEventPolicyMsgs.NO_ETAG_AVAILABLE_FAILURE, index, entityId);
606 // Write the entity to the search service.
608 searchAgent.putDocument(index, entityId, eventEntity.getAsJson(), headers);
609 } else if (action.equalsIgnoreCase(ACTION_CREATE)) {
610 // Write the entry to the search service.
611 searchAgent.postDocument(index, eventEntity.getAsJson(), headers);
613 } else if (action.equalsIgnoreCase(ACTION_DELETE)) {
614 // Run the GET to retrieve the ETAG from the search service
615 OperationResult storedEntity = searchAgent.getDocument(index, entityId);
617 if (HttpUtil.isHttpResponseClassSuccess(storedEntity.getResultCode())) {
618 List<String> etag = storedEntity.getHeaders().get(Headers.ETAG);
620 if (etag != null && !etag.isEmpty()) {
621 headers.put(Headers.IF_MATCH, etag);
623 logger.error(EntityEventPolicyMsgs.NO_ETAG_AVAILABLE_FAILURE, index, entityId);
626 searchAgent.deleteDocument(index, eventEntity.getId(), headers);
628 logger.error(EntityEventPolicyMsgs.NO_ETAG_AVAILABLE_FAILURE, index, entityId);
631 logger.error(EntityEventPolicyMsgs.ENTITY_OPERATION_NOT_SUPPORTED, action);
633 } catch (IOException e) {
634 logger.error(EntityEventPolicyMsgs.FAILED_TO_UPDATE_ENTITY_IN_DOCSTORE, eventEntity.getId(),
641 // put this here until we find a better spot
643 * Helper utility to concatenate substrings of a URI together to form a proper URI.
645 * @param suburis the list of substrings to concatenate together
646 * @return the concatenated list of substrings
648 public static String concatSubUri(String... suburis) {
649 String finalUri = "";
651 for (String suburi : suburis) {
653 if (suburi != null) {
654 // Remove any leading / since we only want to append /
655 suburi = suburi.replaceFirst("^/*", "");
657 // Add a trailing / if one isn't already there
658 finalUri += suburi.endsWith("/") ? suburi : suburi + "/";