diff options
Diffstat (limited to 'dcae-analytics/dcae-analytics-tca-core/src/main/java/org/onap/dcae/analytics/tca/core/util/function/calculation/TcaEventNameFilter.java')
-rw-r--r-- | dcae-analytics/dcae-analytics-tca-core/src/main/java/org/onap/dcae/analytics/tca/core/util/function/calculation/TcaEventNameFilter.java | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/dcae-analytics/dcae-analytics-tca-core/src/main/java/org/onap/dcae/analytics/tca/core/util/function/calculation/TcaEventNameFilter.java b/dcae-analytics/dcae-analytics-tca-core/src/main/java/org/onap/dcae/analytics/tca/core/util/function/calculation/TcaEventNameFilter.java new file mode 100644 index 0000000..574e9ba --- /dev/null +++ b/dcae-analytics/dcae-analytics-tca-core/src/main/java/org/onap/dcae/analytics/tca/core/util/function/calculation/TcaEventNameFilter.java @@ -0,0 +1,77 @@ +/* + * ================================================================================ + * Copyright (c) 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.dcae.analytics.tca.core.util.function.calculation; + +import java.util.Optional; +import java.util.Set; +import java.util.stream.Collectors; + +import org.onap.dcae.analytics.model.cef.CommonEventHeader; +import org.onap.dcae.analytics.model.cef.Event; +import org.onap.dcae.analytics.model.cef.EventListener; +import org.onap.dcae.analytics.tca.core.service.TcaExecutionContext; +import org.onap.dcae.analytics.tca.model.policy.MetricsPerEventName; +import org.onap.dcae.analytics.tca.model.policy.TcaPolicy; + +/** + * @author Rajiv Singla + */ +public class TcaEventNameFilter implements TcaCalculationFunction { + + @Override + public TcaExecutionContext calculate(final TcaExecutionContext tcaExecutionContext) { + + final String cefMessage = tcaExecutionContext.getCefMessage(); + final EventListener eventListener = tcaExecutionContext.getTcaProcessingContext().getEventListener(); + + final Optional<String> eventNameOptional = Optional.ofNullable(eventListener) + .map(EventListener::getEvent) + .map(Event::getCommonEventHeader) + .map(CommonEventHeader::getEventName); + + // Check Event name is present + if (!eventNameOptional.isPresent()) { + final String errorMessage = + "Event -> Common Event Header -> Event Name not present. Invalid CEF Message: " + cefMessage; + setTerminatingMessage(errorMessage, tcaExecutionContext, true); + return tcaExecutionContext; + } + + // Get CEF Message Event name and Event names in tca policy + final String cefMessageEventName = eventNameOptional.get(); + final TcaPolicy tcaPolicy = tcaExecutionContext.getTcaPolicy(); + final Set<String> policyEventNames = tcaPolicy.getMetricsPerEventName().stream() + .map(MetricsPerEventName::getEventName).collect(Collectors.toSet()); + + // Check CEF Message Event name matches any Policy Event names + if (!policyEventNames.contains(cefMessageEventName)) { + final String earlyTerminationMessage = String.format( + "CEF Message Event name does not match any Policy Event Names. " + + "Message EventName: %s, Policy Event Names: %s", cefMessageEventName, policyEventNames); + setTerminatingMessage(earlyTerminationMessage, tcaExecutionContext, false); + return tcaExecutionContext; + } + + // CEF Messages one of the the Policy Event names + // do nothing + + return tcaExecutionContext; + } +} |