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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* Copyright © 2017 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=========================================================
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
*/
package org.openecomp.datarouter.util;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.ObjectWriter;
import com.fasterxml.jackson.databind.SerializationFeature;
public class NodeUtils {
/**
* Generate unique sha digest. This method is copy over from NodeUtils class in AAIUI
*
* @param keys the keys
* @return the string
*/
public static String generateUniqueShaDigest(String... keys) {
if ((keys == null) || keys.length == 0) {
return null;
}
final String keysStr = Arrays.asList(keys).toString();
final String hashedId = org.apache.commons.codec.digest.DigestUtils.sha256Hex(keysStr);
return hashedId;
}
/**
* Extract field value from object.
*
* @param node the node
* @param fieldName the field name
* @return the string
*/
public static String extractFieldValueFromObject(JsonNode node, String fieldName) {
if (node == null) {
return null;
}
if (node.isObject()) {
JsonNode valueNode = node.get(fieldName);
if (valueNode != null) {
if (valueNode.isValueNode()) {
return valueNode.asText();
}
}
}
return null;
}
/**
* Convert json str to json node.
*
* @param jsonStr the json str
* @return the json node
* @throws IOException Signals that an I/O exception has occurred.
*/
public static JsonNode convertJsonStrToJsonNode(String jsonStr) throws IOException {
ObjectMapper mapper = new ObjectMapper();
if (jsonStr == null || jsonStr.length() == 0) {
return null;
}
return mapper.readTree(jsonStr);
}
/**
* Extract objects by key.
*
* @param node the node
* @param searchKey the search key
* @param foundObjects the found objects
*/
public static void extractObjectsByKey(JsonNode node, String searchKey,
Collection<JsonNode> foundObjects) {
if ( node == null ) {
return;
}
if (node.isObject()) {
Iterator<Map.Entry<String, JsonNode>> nodeIterator = node.fields();
while (nodeIterator.hasNext()) {
Map.Entry<String, JsonNode> entry = nodeIterator.next();
if (!entry.getValue().isValueNode()) {
extractObjectsByKey(entry.getValue(), searchKey, foundObjects);
}
String name = entry.getKey();
if (name.equalsIgnoreCase(searchKey)) {
JsonNode entryNode = entry.getValue();
if (entryNode.isArray()) {
Iterator<JsonNode> arrayItemsIterator = entryNode.elements();
while (arrayItemsIterator.hasNext()) {
foundObjects.add(arrayItemsIterator.next());
}
} else {
foundObjects.add(entry.getValue());
}
}
}
} else if (node.isArray()) {
Iterator<JsonNode> arrayItemsIterator = node.elements();
while (arrayItemsIterator.hasNext()) {
extractObjectsByKey(arrayItemsIterator.next(), searchKey, foundObjects);
}
}
}
/**
* Convert object to json.
*
* @param object the object
* @param pretty the pretty
* @return the string
* @throws JsonProcessingException the json processing exception
*/
public static String convertObjectToJson(Object object, boolean pretty)
throws JsonProcessingException {
ObjectWriter ow = null;
ObjectMapper mapper = new ObjectMapper();
mapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
if (pretty) {
ow = mapper.writer().withDefaultPrettyPrinter();
} else {
ow = mapper.writer();
}
return ow.writeValueAsString(object);
}
}
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