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/*
* ============LICENSE_START=======================================================
* PNF-REGISTRATION-HANDLER
* ================================================================================
* Copyright (C) 2018 NOKIA 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.onap.dcaegen2.services.prh.service;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import org.onap.dcaegen2.services.prh.exceptions.DmaapNotFoundException;
import org.onap.dcaegen2.services.prh.model.ConsumerDmaapModel;
import org.onap.dcaegen2.services.prh.model.ImmutableConsumerDmaapModel;
import java.util.Optional;
import java.util.stream.StreamSupport;
/**
* @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 5/8/18
*/
public class DmaapConsumerJsonParser {
private static final String EVENT = "event";
private static final String OTHER_FIELDS = "otherFields";
private static final String PNF_OAM_IPV_4_ADDRESS = "pnfOamIpv4Address";
private static final String PNF_OAM_IPV_6_ADDRESS = "pnfOamIpv6Address";
private static final String PNF_VENDOR_NAME = "pnfVendorName";
private static final String PNF_SERIAL_NUMBER = "pnfSerialNumber";
private DmaapConsumerJsonParser() {}
public static ConsumerDmaapModel getJsonObject(String message) throws DmaapNotFoundException {
JsonElement jsonElement = new JsonParser().parse(message);
JsonObject jsonObject = jsonElement.isJsonObject() ? jsonElement.getAsJsonObject() :
StreamSupport.stream(jsonElement.getAsJsonArray().spliterator(), false).findFirst()
.flatMap(element -> Optional.of(new JsonParser().parse(element.toString()).getAsJsonObject()))
.orElseThrow(() -> new DmaapNotFoundException("Json object not found in json array"))
.getAsJsonObject();
return create(jsonObject);
}
private static ConsumerDmaapModel create(JsonObject jsonObject) throws DmaapNotFoundException {
if (containsHeader(jsonObject)) {
jsonObject = jsonObject.getAsJsonObject(EVENT).getAsJsonObject(OTHER_FIELDS);
String pnfVendorName = getValueFromJson(jsonObject, PNF_VENDOR_NAME);
String pnfSerialNumber = getValueFromJson(jsonObject, PNF_SERIAL_NUMBER);
String pnfOamIpv4Address = getValueFromJson(jsonObject, PNF_OAM_IPV_4_ADDRESS);
String pnfOamIpv6Address = getValueFromJson(jsonObject, PNF_OAM_IPV_6_ADDRESS);
if (isVendorAndSerialNotEmpty(pnfSerialNumber, pnfVendorName) && isIpPropertiesNotEmpty(pnfOamIpv4Address,
pnfOamIpv6Address)) {
String correlationID = pnfVendorName.substring(0, Math.min(pnfVendorName.length(), 3)).toUpperCase()
.concat(pnfSerialNumber);
return ImmutableConsumerDmaapModel.builder().pnfName(correlationID).ipv4(pnfOamIpv4Address)
.ipv6(pnfOamIpv6Address).build();
}
throw new DmaapNotFoundException("IPV4 and IPV6 are empty");
}
throw new DmaapNotFoundException("Incorrect JsonObject - missing header");
}
private static String getValueFromJson(JsonObject jsonObject, String jsonKey) {
return jsonObject.has(jsonKey) ? jsonObject.get(jsonKey).getAsString() : "";
}
private static boolean isVendorAndSerialNotEmpty(String pnfSerialNumber, String pnfVendorName) {
return ((pnfSerialNumber != null && !pnfSerialNumber.isEmpty()) && (pnfVendorName != null && !pnfVendorName
.isEmpty()));
}
private static boolean isIpPropertiesNotEmpty(String ipv4, String ipv6) {
return (ipv4 != null && !ipv4.isEmpty()) || (ipv6 != null
&& !ipv6.isEmpty());
}
private static boolean containsHeader(JsonObject jsonObject) {
return jsonObject.has(EVENT) && jsonObject.getAsJsonObject(EVENT).has(OTHER_FIELDS);
}
}
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