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/*-
* ============LICENSE_START=======================================================
* openECOMP : APP-C
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights
* reserved.
* ================================================================================
* 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.openecomp.appc.listener.util;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import com.fasterxml.jackson.databind.JsonNode;
import org.json.JSONObject;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import com.fasterxml.jackson.databind.ObjectMapper;
public class Mapper {
private static final EELFLogger LOG = EELFManager.getInstance().getLogger(Mapper.class);
private static ObjectMapper mapper = new ObjectMapper();
/**
* @return The object mapper that we are using.
*/
public static ObjectMapper getMapper() {
return mapper;
}
/**
* Convert a String to a DcaeMessage
*
* @param data
* The json string to try and parse
* @return A DcaeMessage from the json string or null if it could not
*/
public static <T> T mapOne(String data, Class<T> cls) {
try {
return mapper.readValue(data, cls);
} catch (Exception e) {
LOG.warn(String.format("Could not map [ %s ] to %s", data, cls.getName()), e);
return null;
}
}
public static <T> List<T> mapList(List<String> data, Class<T> cls) {
List<T> out = new ArrayList<T>();
for (String s : data) {
T tmp = Mapper.mapOne(s, cls);
if (tmp != null) {
out.add(tmp);
}
}
return out;
}
/**
* Convenience method to try and convert objects to json String
*
* @param obj
* The object to try and convert
* @return A json string representing the object or null if it could not be converted
*/
public static String toJsonString(Object obj) {
String jsonStr;
try {
if (obj instanceof JSONObject) {
jsonStr = obj.toString();
}else {
jsonStr = mapper.writeValueAsString(obj);
}
return jsonStr;
} catch (Exception e) {
LOG.warn(String.format("Could not map %s to JSONObject.", obj), e);
return null;
}
}
public static JSONObject toJsonObject(Object obj) {
String jsonStr;
try {
if (obj.getClass().equals(String.class)) {
jsonStr = (String) obj;
} else {
jsonStr = mapper.writeValueAsString(obj);
}
return new JSONObject(jsonStr);
} catch (Exception e) {
LOG.warn(String.format("Could not map %s to JSONObject.", obj), e);
return null;
}
}
public static JsonNode toJsonNodeFromJsonString(String jsonStr) {
JsonNode jsonNode = null;
if(jsonStr != null) {
try {
jsonNode = mapper.readTree(jsonStr);
} catch (IOException e) {
LOG.warn(String.format("Could not map %s to jsonNode.", jsonStr), e);
}
}
return jsonNode;
}
public static JsonNode toJsonNode(Object obj) {
JsonNode jsonNode = null;
String jsonStr = toJsonString(obj);
if(jsonStr != null) {
try {
jsonNode = mapper.readTree(jsonStr);
} catch (IOException e) {
LOG.warn(String.format("Could not map %s to JSONObject.", obj), e);
}
}
return jsonNode;
}
}
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