2 * ================================================================================
3 * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 * ============LICENSE_END=========================================================
20 package org.onap.dcae.analytics.tca.core.util.function.calculation;
22 import java.util.Optional;
24 import java.util.stream.Collectors;
26 import org.onap.dcae.analytics.model.cef.CommonEventHeader;
27 import org.onap.dcae.analytics.model.cef.Event;
28 import org.onap.dcae.analytics.model.cef.EventListener;
29 import org.onap.dcae.analytics.tca.core.service.TcaExecutionContext;
30 import org.onap.dcae.analytics.tca.model.policy.MetricsPerEventName;
31 import org.onap.dcae.analytics.tca.model.policy.TcaPolicy;
34 * @author Rajiv Singla
36 public class TcaEventNameFilter implements TcaCalculationFunction {
39 public TcaExecutionContext calculate(final TcaExecutionContext tcaExecutionContext) {
41 final String cefMessage = tcaExecutionContext.getCefMessage();
42 final EventListener eventListener = tcaExecutionContext.getTcaProcessingContext().getEventListener();
44 final Optional<String> eventNameOptional = Optional.ofNullable(eventListener)
45 .map(EventListener::getEvent)
46 .map(Event::getCommonEventHeader)
47 .map(CommonEventHeader::getEventName);
49 // Check Event name is present
50 if (!eventNameOptional.isPresent()) {
51 final String errorMessage =
52 "Event -> Common Event Header -> Event Name not present. Invalid CEF Message: " + cefMessage;
53 setTerminatingMessage(errorMessage, tcaExecutionContext, true);
54 return tcaExecutionContext;
57 // Get CEF Message Event name and Event names in tca policy
58 final String cefMessageEventName = eventNameOptional.get();
59 final TcaPolicy tcaPolicy = tcaExecutionContext.getTcaPolicy();
60 final Set<String> policyEventNames = tcaPolicy.getMetricsPerEventName().stream()
61 .map(MetricsPerEventName::getEventName).collect(Collectors.toSet());
63 // Check CEF Message Event name matches any Policy Event names
64 if (!policyEventNames.contains(cefMessageEventName)) {
65 final String earlyTerminationMessage = String.format(
66 "CEF Message Event name does not match any Policy Event Names. " +
67 "Message EventName: %s, Policy Event Names: %s", cefMessageEventName, policyEventNames);
68 setTerminatingMessage(earlyTerminationMessage, tcaExecutionContext, false);
69 return tcaExecutionContext;
72 // CEF Messages one of the the Policy Event names
75 return tcaExecutionContext;