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/*******************************************************************************
* ============LICENSE_START=======================================================
* slice-analysis-ms
* ================================================================================
* Copyright (C) 2022 Huawei Canada Limited.
* ==============================================================================
* 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.slice.analysis.ms.dmaap;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import org.onap.slice.analysis.ms.models.Configuration;
import org.onap.slice.analysis.ms.service.ccvpn.BandwidthEvaluator;
import org.onap.slice.analysis.ms.service.ccvpn.Event;
import org.onap.slice.analysis.ms.service.ccvpn.SimpleEvent;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import javax.annotation.PostConstruct;
/**
* Handles AAI-EVENT from dmaap
*/
@Component
public class AaiEventNotificationCallback implements NotificationCallback {
private static final String EVENT_HEADER = "event-header";
private static final String ACTION = "action";
private static final String ENTITY_TYPE = "entity-type";
private static final String SOURCE_NAME = "source-name";
private static final String ENTITY = "entity";
private final JsonParser parser = new JsonParser();
private Configuration configuration;
private String aaiNotifTargetAction;
private String aaiNotifTargetSource;
private String aaiNotifTargetEntity;
@Autowired
BandwidthEvaluator bandwidthEvaluator;
@PostConstruct
public void init(){
configuration = Configuration.getInstance();
aaiNotifTargetAction = configuration.getAaiNotifTargetAction();
aaiNotifTargetSource = configuration.getAaiNotifTargetSource();
aaiNotifTargetEntity = configuration.getAaiNotifTargetEntity();
}
@Override
public void activateCallBack(String msg) {
handleNotification(msg);
}
private void handleNotification(String msg) {
JsonElement jsonElement = parser.parse(msg);
if (jsonElement.isJsonObject()){
//handle a single AAI_EVENT
handleMsgJsonObject(jsonElement.getAsJsonObject());
} else if (jsonElement.isJsonArray()){
//handle a series of AAI_EVENT
JsonArray jsonArray = jsonElement.getAsJsonArray();
for (int i=0,e=jsonArray.size(); i<e; i++){
handleMsgJsonObject(jsonArray.get(i).getAsJsonObject());
}
}
}
private void handleMsgJsonObject(JsonObject jsonObject){
JsonObject header = jsonObject.get(EVENT_HEADER).getAsJsonObject();
if (header.has(ACTION) && header.get(ACTION).getAsString().equals(aaiNotifTargetAction)) {
if (header.has(ENTITY_TYPE) && header.get(ENTITY_TYPE).getAsString().equals(aaiNotifTargetEntity)){
if (header.has(SOURCE_NAME) && header.get(SOURCE_NAME).getAsString().equals(aaiNotifTargetSource)) {
JsonObject body = jsonObject.get(ENTITY).getAsJsonObject();
Event event = new SimpleEvent<>(SimpleEvent.Type.ONDEMAND_CHECK, body);
bandwidthEvaluator.post(event);
}
}
}
}
}
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