2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 - 2019 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Copyright (C) 2020 Nokia.
8 * ================================================================================
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 * ============LICENSE_END=========================================================
23 package org.onap.so.bpmn.common.listener.flowmanipulator;
25 import java.util.ArrayList;
26 import java.util.HashMap;
27 import java.util.List;
28 import java.util.Optional;
29 import java.util.stream.Collectors;
30 import javax.annotation.PostConstruct;
31 import org.onap.so.bpmn.common.BBConstants;
32 import org.onap.so.bpmn.common.BuildingBlockExecution;
33 import org.onap.so.bpmn.servicedecomposition.entities.ExecuteBuildingBlock;
34 import org.onap.so.listener.ListenerRunner;
35 import org.slf4j.Logger;
36 import org.slf4j.LoggerFactory;
37 import org.springframework.stereotype.Component;
40 public class FlowManipulatorListenerRunner extends ListenerRunner {
42 private static Logger logger = LoggerFactory.getLogger(FlowManipulatorListenerRunner.class);
44 protected List<PreFlowManipulator> flowManipulators;
46 protected List<PostFlowManipulator> postflowManipulators;
49 protected void init() {
51 flowManipulators = new ArrayList<>(
52 Optional.ofNullable(context.getBeansOfType(PreFlowManipulator.class)).orElse(new HashMap<>()).values());
54 postflowManipulators = new ArrayList<>(Optional.ofNullable(context.getBeansOfType(PostFlowManipulator.class))
55 .orElse(new HashMap<>()).values());
59 public void modifyFlows(List<ExecuteBuildingBlock> flowsToExecute, BuildingBlockExecution execution) {
60 int sequenceBeforeFlowManipulator;
62 sequenceBeforeFlowManipulator = execution.getVariable(BBConstants.G_CURRENT_SEQUENCE);
63 ExecuteBuildingBlock currentBB = flowsToExecute.get(execution.getCurrentSequence());
64 List<PreFlowManipulator> filtered = filterListeners(flowManipulators,
65 (item -> item.shouldRunFor(currentBB.getBuildingBlock().getBpmnFlowName(),
66 execution.getCurrentSequence() == 0, execution)));
68 logger.info("Running pre flow manipulators:\n{}",
69 filtered.stream().map(item -> item.getClass().getName()).collect(Collectors.joining("\n")));
70 filtered.forEach(item -> item.run(flowsToExecute, currentBB, execution));
71 } while (isBuildingBlockSkipped(sequenceBeforeFlowManipulator, execution));
74 public void postModifyFlows(List<ExecuteBuildingBlock> flowsToExecute, BuildingBlockExecution execution) {
75 int sequenceBeforeFlowManipulator;
77 sequenceBeforeFlowManipulator = execution.getVariable(BBConstants.G_CURRENT_SEQUENCE);
78 ExecuteBuildingBlock currentBB = flowsToExecute.get(execution.getCurrentSequence() - 1);
79 List<PostFlowManipulator> filtered = filterListeners(postflowManipulators,
80 (item -> item.shouldRunFor(currentBB.getBuildingBlock().getBpmnFlowName(),
81 execution.getCurrentSequence() == 0, execution)));
83 logger.info("Running post flow manipulators:\n{}",
84 filtered.stream().map(item -> item.getClass().getName()).collect(Collectors.joining("\n")));
85 filtered.forEach(item -> item.run(flowsToExecute, currentBB, execution));
86 } while (isBuildingBlockSkipped(sequenceBeforeFlowManipulator, execution));
89 private boolean isBuildingBlockSkipped(int sequenceBeforeFlowManipulator, BuildingBlockExecution execution) {
90 return sequenceBeforeFlowManipulator != (int) execution.getVariable(BBConstants.G_CURRENT_SEQUENCE);