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.List;
23 import java.util.stream.Collectors;
24 import java.util.stream.Stream;
26 import org.onap.dcae.analytics.tca.core.service.TcaExecutionContext;
29 * TCA Calculator combines all TCA calculation functions into one single function
31 * @author Rajiv Singla
33 public class TcaCalculator implements TcaCalculationFunction {
35 private static final List<TcaCalculationFunction> TCA_CALCULATOR_FUNCTIONS_CHAIN =
37 new TcaEventListenerExtractor(),
38 new TcaDomainFilter(),
39 new TcaEventNameFilter(),
40 new TcaThresholdViolationCalculator(),
41 new TcaAbatementCalculator(),
42 new TcaAlertCreationFunction(),
43 new TcaAaiEnrichmentFunction()).collect(Collectors.toList());
46 public TcaExecutionContext calculate(final TcaExecutionContext tcaExecutionContext) {
48 TcaExecutionContext accumulator = tcaExecutionContext;
50 for (TcaCalculationFunction tcaCalculationFunction : TCA_CALCULATOR_FUNCTIONS_CHAIN) {
51 if (!accumulator.getTcaProcessingContext().isContinueProcessing()) {
52 // do early termination
55 accumulator = tcaCalculationFunction.apply(accumulator);