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/*-
* ============LICENSE_START=======================================================
* ONAP - SO
* ================================================================================
* Copyright (C) 2017 - 2019 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2020 Nokia.
* ================================================================================
* 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.so.bpmn.common.listener.flowmanipulator;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;
import javax.annotation.PostConstruct;
import org.onap.so.bpmn.common.BBConstants;
import org.onap.so.bpmn.common.BuildingBlockExecution;
import org.onap.so.bpmn.servicedecomposition.entities.ExecuteBuildingBlock;
import org.onap.so.listener.ListenerRunner;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
@Component
public class FlowManipulatorListenerRunner extends ListenerRunner {
private static Logger logger = LoggerFactory.getLogger(FlowManipulatorListenerRunner.class);
protected List<PreFlowManipulator> flowManipulators;
protected List<PostFlowManipulator> postflowManipulators;
@PostConstruct
protected void init() {
flowManipulators = new ArrayList<>(
Optional.ofNullable(context.getBeansOfType(PreFlowManipulator.class)).orElse(new HashMap<>()).values());
postflowManipulators = new ArrayList<>(Optional.ofNullable(context.getBeansOfType(PostFlowManipulator.class))
.orElse(new HashMap<>()).values());
}
public void modifyFlows(List<ExecuteBuildingBlock> flowsToExecute, BuildingBlockExecution execution) {
int sequenceBeforeFlowManipulator;
do {
sequenceBeforeFlowManipulator = execution.getVariable(BBConstants.G_CURRENT_SEQUENCE);
if (sequenceBeforeFlowManipulator >= flowsToExecute.size()) {
break;
}
ExecuteBuildingBlock currentBB = flowsToExecute.get(execution.getCurrentSequence());
List<PreFlowManipulator> filtered = filterListeners(flowManipulators,
(item -> item.shouldRunFor(currentBB.getBuildingBlock().getBpmnFlowName(),
execution.getCurrentSequence() == 0, execution)));
logger.info("Running pre flow manipulators:\n{}",
filtered.stream().map(item -> item.getClass().getName()).collect(Collectors.joining("\n")));
filtered.forEach(item -> item.run(flowsToExecute, currentBB, execution));
} while (isBuildingBlockSkipped(sequenceBeforeFlowManipulator, execution));
}
public void postModifyFlows(List<ExecuteBuildingBlock> flowsToExecute, BuildingBlockExecution execution) {
int sequenceBeforeFlowManipulator;
do {
sequenceBeforeFlowManipulator = execution.getVariable(BBConstants.G_CURRENT_SEQUENCE);
ExecuteBuildingBlock currentBB = flowsToExecute.get(execution.getCurrentSequence() - 1);
List<PostFlowManipulator> filtered = filterListeners(postflowManipulators,
(item -> item.shouldRunFor(currentBB.getBuildingBlock().getBpmnFlowName(),
execution.getCurrentSequence() == 0, execution)));
logger.info("Running post flow manipulators:\n{}",
filtered.stream().map(item -> item.getClass().getName()).collect(Collectors.joining("\n")));
filtered.forEach(item -> item.run(flowsToExecute, currentBB, execution));
} while (isBuildingBlockSkipped(sequenceBeforeFlowManipulator, execution));
}
private boolean isBuildingBlockSkipped(int sequenceBeforeFlowManipulator, BuildingBlockExecution execution) {
return sequenceBeforeFlowManipulator != (int) execution.getVariable(BBConstants.G_CURRENT_SEQUENCE);
}
}
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