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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 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.onap.aai.cacher.dmaap.consumer;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.mongodb.MongoCommandException;
import org.bson.Document;
import org.json.JSONException;
import org.json.JSONObject;
import org.onap.aai.cacher.common.MongoHelperSingleton;
import org.onap.aai.cacher.injestion.parser.PayloadParserService;
import org.onap.aai.cacher.injestion.parser.strategy.PayloadParserType;
import org.onap.aai.cacher.model.CacheEntry;
import org.onap.aai.exceptions.AAIException;
import org.onap.aai.logging.ErrorLogHelper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
import java.util.Optional;
@Service
public class AAIDmaapEventProcessor implements DmaapProcessor {
private static EELFLogger LOGGER = EELFManager.getInstance().getLogger(AAIEventConsumer.class);
private final JsonParser parser = new JsonParser();
private JSONObject event;
private JSONObject eventHeader;
private JSONObject eventBody;
private MongoHelperSingleton mongoHelper;
private PayloadParserService payloadParserService;
@Autowired
public AAIDmaapEventProcessor(MongoHelperSingleton mongoHelper, PayloadParserService payloadParserService) {
this.mongoHelper = mongoHelper;
this.payloadParserService = payloadParserService;
}
public AAIDmaapEventProcessor() {
}
/**
*
* @param eventMessage
* @return
*/
public void process(String eventMessage) throws Exception {
this.event = null;
this.eventHeader = null;
this.eventBody = null;
try {
LOGGER.debug("Processing event: " + eventMessage);
this.event = new JSONObject(eventMessage);
} catch (JSONException je) {
LOGGER.error("ERROR: Event is not valid JSON [" + eventMessage + "].");
ErrorLogHelper.logException(new AAIException("AAI_4000", je));
throw je;
}
try {
LOGGER.debug("Validating event header.");
this.validateEventHeader(this.event);
} catch (JSONException je) {
LOGGER.error("ERROR: Event header is not valid [" + eventMessage + "].");
ErrorLogHelper.logException(new AAIException("AAI_4000", je));
throw je;
}
try {
LOGGER.debug("Processing entity.");
eventBody = this.event.getJSONObject("entity");
} catch (JSONException je) {
LOGGER.error("ERROR: Event body is not valid JSON [" + eventMessage + "].");
ErrorLogHelper.logException(new AAIException("AAI_4000", je));
throw je;
}
List<CacheEntry> dmaapCacheEntries = payloadParserService.doParse("aai-dmaap",
parser.parse(eventMessage).getAsJsonObject(), PayloadParserType.AAI_RESOURCE_DMAAP);
// Get existing object if is update
Optional<Document> existingObj = Optional.empty();
if (this.eventHeader != null && "UPDATE".equals(eventHeader.getString("action"))) {
existingObj = mongoHelper.getObject(dmaapCacheEntries.get(0));
}
// Add existing object to payload to be parsed by AAI_RESOURCE_DMAAP parser
if (existingObj.isPresent()) {
JsonObject eventMessageObj = parser.parse(eventMessage).getAsJsonObject();
eventMessageObj.add("existing-obj", parser.parse(existingObj.get().toJson()).getAsJsonObject());
eventMessage = eventMessageObj.toString();
dmaapCacheEntries = payloadParserService.doParse("aai-dmaap", parser.parse(eventMessage).getAsJsonObject(),
PayloadParserType.AAI_RESOURCE_DMAAP);
}
for (CacheEntry cacheEntry : dmaapCacheEntries) {
try {
switch (cacheEntry.getDbAction()) {
case DELETE:
mongoHelper.delete(cacheEntry);
break;
case UPDATE:
mongoHelper.insertReplace(cacheEntry);
break;
case INSERT_REPLACE:
mongoHelper.insertReplace(cacheEntry);
break;
}
} catch (MongoCommandException exception) {
LOGGER.warn("Attempted to update nested that does not exist in cache.", exception);
}
}
LOGGER.debug("Event processed successfully.");
}
/**
* Validates that the event header has the id and source name for processing.
* (needed for status response msg)
*
* @param event
* @throws JSONException
*/
private void validateEventHeader(JSONObject event) throws JSONException {
eventHeader = event.getJSONObject("event-header");
if (this.eventHeader.getString("id") == null || this.eventHeader.getString("id").isEmpty()) {
throw new JSONException("Event header id missing.");
} else if (this.eventHeader.getString("source-name") == null
|| this.eventHeader.getString("source-name").isEmpty()) {
throw new JSONException("Event header source-name missing.");
}
}
/**
*
* @return
*/
public JSONObject getEventHeader() {
return eventHeader;
}
/**
*
* @return
*/
public JSONObject getEventBody() {
return eventBody;
}
}
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