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/**
* Copyright (c) 2019 Huawei
*
* 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.
*/
package org.onap.nbi.apis.hub.service;
import java.io.IOException;
import java.net.URI;
import java.util.List;
import javax.annotation.PostConstruct;
import org.onap.nbi.OnapComponentsUrlPaths;
import org.onap.nbi.apis.hub.model.Event;
import org.onap.nbi.apis.hub.model.EventType;
import org.onap.nbi.apis.hub.model.ServiceInstanceEvent;
import org.onap.nbi.apis.hub.repository.SubscriberRepository;
import org.onap.nbi.apis.serviceorder.model.RelatedParty;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Service;
import org.springframework.util.CollectionUtils;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.util.UriComponentsBuilder;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
@Service
public class CheckDMaaPEventsManager {
public static final String RESPONSE_STATUS = "response status : ";
public static final String RETURNS = " returns ";
public static final String ERROR_ON_CALLING = "error on calling ";
@Autowired
private RestTemplate restTemplate;
@Autowired
private SubscriberRepository subscriberRepository;
@Autowired
private NotifierService notifier;
@Value("${dmaap.host}")
private String dmaapHostname;
@Value("${dmaap.topic}")
private String topic;
@Value("${dmaap.consumergroup}")
private String consumerGroup;
@Value("${dmaap.consumerid}")
private String consumerId;
@Value("${dmaap.timeout}")
private String timeout;
private final Logger logger = LoggerFactory.getLogger(CheckDMaaPEventsManager.class);
private String dmaapGetEventsUrl;
@PostConstruct
private void setUpAndLogDMaaPUrl() {
dmaapGetEventsUrl = new StringBuilder().append(dmaapHostname)
.append(OnapComponentsUrlPaths.DMAAP_CONSUME_EVENTS).toString();
logger.info("DMaaP Get Events url : " + dmaapGetEventsUrl);
}
public void checkForDMaaPAAIEvents() {
ObjectMapper mapper = new ObjectMapper();
List<String> dmaapResponse = callDMaaPGetEvents();
if (!CollectionUtils.isEmpty(dmaapResponse)) {
for (int i = 0; i < dmaapResponse.size(); i++) {
String aaiEventString = dmaapResponse.get(i);
if (logger.isDebugEnabled()) {
logger.debug("aai event returned was {}", aaiEventString);
}
try {
JsonNode jsonNode = mapper.readValue(aaiEventString, JsonNode.class);
JsonNode eventHeader = jsonNode.get("event-header");
String aaiEventEntityType = eventHeader.get("entity-type").asText();
String action = eventHeader.get("action").asText();
if (logger.isDebugEnabled()) {
logger.debug("aaiEventEntityType is {} and action is {}", aaiEventEntityType, action);
}
if (aaiEventEntityType.equals("service-instance")) {
{
// parse the AAI-EVENT service-instance tree
ServiceInstanceEvent serviceInstanceEvent = new ServiceInstanceEvent();
RelatedParty relatedParty = new RelatedParty();
JsonNode entity = jsonNode.get("entity");
relatedParty.setId(entity.get("global-customer-id").asText());
relatedParty.setName(entity.get("subscriber-name").asText());
serviceInstanceEvent.setRelatedParty(relatedParty);
JsonNode childServiceSubscription = entity.get("service-subscriptions");
JsonNode serviceSubscriptions = childServiceSubscription.get("service-subscription");
JsonNode serviceSubscription = serviceSubscriptions.get(0);
String serviceSubscriptionPrint = serviceSubscription.toString();
JsonNode childserviceInstances = serviceSubscription.get("service-instances");
JsonNode serviceInstances = childserviceInstances.get("service-instance");
JsonNode serviceInstance = serviceInstances.get(0);
serviceInstanceEvent.setId(serviceInstance.get("service-instance-id").asText());
serviceInstanceEvent.setHref("service/" + serviceInstance.get("service-instance-id").asText());
serviceInstanceEvent.setState(serviceInstance.get("orchestration-status").asText());
if (action.equals("CREATE")) {
if (logger.isDebugEnabled()) {
logger.debug("sending service inventory event to listeners");
}
processEvent(
EventFactory.getEvent(EventType.SERVICE_CREATION, serviceInstanceEvent));
} else if (action.equals("DELETE")) {
processEvent(EventFactory.getEvent(EventType.SERVICE_REMOVE, serviceInstanceEvent));
} else if (action.equals("UPDATE")) {
processEvent(EventFactory.getEvent(EventType.SERVICE_ATTRIBUTE_VALUE_CHANGE,
serviceInstanceEvent));
}
}
}
} catch (JsonParseException e) {
logger.error(" unable to Parse AAI Event JSON String {}, exception is", aaiEventString,
e.getMessage());
} catch (JsonMappingException e) {
logger.error(" unable to Map AAI Event JSON String {} to Java Pojo, exception is",
aaiEventString, e.getMessage());
} catch (IOException e) {
logger.error("IO Error when parsing AAI Event JSON String {} ", aaiEventString,
e.getMessage());
}
}
}
}
public List<String> callDMaaPGetEvents() {
String dmaapGetEventsUrlFormated = dmaapGetEventsUrl.replace("$topic", topic);
dmaapGetEventsUrlFormated = dmaapGetEventsUrlFormated.replace("$consumergroup", consumerGroup);
dmaapGetEventsUrlFormated = dmaapGetEventsUrlFormated.replace("$consumerid", consumerId);
dmaapGetEventsUrlFormated = dmaapGetEventsUrlFormated.replace("$timeout", timeout);
if (logger.isDebugEnabled()) {
logger.debug("Calling DMaaP Url : " + dmaapGetEventsUrlFormated);
}
UriComponentsBuilder callURI = UriComponentsBuilder.fromHttpUrl(dmaapGetEventsUrlFormated);
ResponseEntity<Object> response = callDMaaP(callURI.build().encode().toUri());
return (List<String>) response.getBody();
}
private ResponseEntity<Object> callDMaaP(URI callURI) {
ResponseEntity<Object> response =
restTemplate.exchange(callURI, HttpMethod.GET, buildRequestHeader(), Object.class);
if (logger.isDebugEnabled()) {
logger.debug("response body : {} ", response.getBody().toString());
logger.debug("response status : {}", response.getStatusCodeValue());
}
return response;
}
private HttpEntity<String> buildRequestHeader() {
HttpHeaders httpHeaders = new HttpHeaders();
httpHeaders.add("Accept", "application/json");
httpHeaders.add("Content-Type", "application/json");
return new HttpEntity<>("parameters", httpHeaders);
}
/**
* Retrieve subscribers that match an event and fire notification asynchronously
*
* @param event
*/
private void processEvent(Event event) {
subscriberRepository.findSubscribersUsingEvent(event).forEach(sub -> notifier.run(sub, event));
}
}
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