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/*-
* ============LICENSE_START=======================================================
* org.onap.dcaegen2.collectors.restconf
* ================================================================================
* Copyright (C) 2018 Huawei. 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.onap.dcae.collectors.restconf.common;
import org.codehaus.jettison.json.JSONArray;
import org.codehaus.jettison.json.JSONException;
import org.codehaus.jettison.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import static com.google.common.base.Preconditions.checkNotNull;
public class JsonParser {
private static final Logger log = LoggerFactory.getLogger(JsonParser.class);
private JsonParser() {
// Preventing instantiation of the same.
}
@SuppressWarnings("unchecked")
public static Map<String, String> convertToProperties(String s)
throws Exception {
checkNotNull(s, "Input should not be null.");
try {
JSONObject json = new JSONObject(s);
Map<String, Object> wm = new HashMap<>();
Iterator<String> ii = json.keys();
while (ii.hasNext()) {
String key1 = ii.next();
wm.put(key1, json.get(key1));
}
Map<String, String> mm = new HashMap<>();
while (!wm.isEmpty())
for (String key : new ArrayList<>(wm.keySet())) {
Object o = wm.get(key);
wm.remove(key);
if (o instanceof Boolean || o instanceof Number || o instanceof String) {
mm.put(key, o.toString());
log.info("Added property: {} : {}", key, o.toString());
} else if (o instanceof JSONObject) {
JSONObject jo = (JSONObject) o;
Iterator<String> i = jo.keys();
while (i.hasNext()) {
String key1 = i.next();
wm.put(key + "." + key1, jo.get(key1));
}
} else if (o instanceof JSONArray) {
JSONArray ja = (JSONArray) o;
mm.put(key + "_length", String.valueOf(ja.length()));
log.info("Added property: {}_length: {}", key, String.valueOf(ja.length()));
for (int i = 0; i < ja.length(); i++)
wm.put(key + '[' + i + ']', ja.get(i));
}
}
return mm;
} catch (JSONException e) {
throw new Exception("Unable to convert JSON to properties" + e.getLocalizedMessage(), e);
}
}
}
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