/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
package org.apache.nifi.cluster.manager;
import org.apache.nifi.cluster.protocol.NodeIdentifier;
import org.apache.nifi.web.api.dto.PropertyDescriptorDTO;
import org.apache.nifi.web.api.dto.ReportingTaskDTO;
import org.apache.nifi.web.api.entity.ReportingTaskEntity;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
public class ReportingTaskEntityMerger implements ComponentEntityMerger<ReportingTaskEntity> {
/**
* Merges the ReportingTaskEntity responses.
*
* @param clientEntity the entity being returned to the client
* @param entityMap all node responses
*/
public void mergeComponents(final ReportingTaskEntity clientEntity, final Map<NodeIdentifier, ReportingTaskEntity> entityMap) {
final ReportingTaskDTO clientDto = clientEntity.getComponent();
final Map<NodeIdentifier, ReportingTaskDTO> dtoMap = new HashMap<>();
for (final Map.Entry<NodeIdentifier, ReportingTaskEntity> entry : entityMap.entrySet()) {
final ReportingTaskEntity nodeReportingTaskEntity = entry.getValue();
final ReportingTaskDTO nodeReportingTaskDto = nodeReportingTaskEntity.getComponent();
dtoMap.put(entry.getKey(), nodeReportingTaskDto);
}
mergeDtos(clientDto, dtoMap);
}
private static void mergeDtos(final ReportingTaskDTO clientDto, final Map<NodeIdentifier, ReportingTaskDTO> dtoMap) {
// if unauthorized for the client dto, simple return
if (clientDto == null) {
return;
}
final Map<String, Set<NodeIdentifier>> validationErrorMap = new HashMap<>();
final Map<String, Map<NodeIdentifier, PropertyDescriptorDTO>> propertyDescriptorMap = new HashMap<>();
int activeThreadCount = 0;
for (final Map.Entry<NodeIdentifier, ReportingTaskDTO> nodeEntry : dtoMap.entrySet()) {
final ReportingTaskDTO nodeReportingTask = nodeEntry.getValue();
// consider the node reporting task if authorized
if (nodeReportingTask != null) {
final NodeIdentifier nodeId = nodeEntry.getKey();
if (nodeReportingTask.getActiveThreadCount() != null) {
activeThreadCount += nodeReportingTask.getActiveThreadCount();
}
// merge the validation errors
ErrorMerger.mergeErrors(validationErrorMap, nodeId, nodeReportingTask.getValidationErrors());
// aggregate the property descriptors
nodeReportingTask.getDescriptors().values().stream().forEach(propertyDescriptor -> {
propertyDescriptorMap.computeIfAbsent(propertyDescriptor.getName(), nodeIdToPropertyDescriptor -> new HashMap<>()).put(nodeId, propertyDescriptor);
});
}
}
// merge property descriptors
for (Map<NodeIdentifier, PropertyDescriptorDTO> propertyDescriptorByNodeId : propertyDescriptorMap.values()) {
final Collection<PropertyDescriptorDTO> nodePropertyDescriptors = propertyDescriptorByNodeId.values();
if (!nodePropertyDescriptors.isEmpty()) {
// get the name of the property descriptor and find that descriptor being returned to the client
final PropertyDescriptorDTO propertyDescriptor = nodePropertyDescriptors.iterator().next();
final PropertyDescriptorDTO clientPropertyDescriptor = clientDto.getDescriptors().get(propertyDescriptor.getName());
PropertyDescriptorDtoMerger.merge(clientPropertyDescriptor, propertyDescriptorByNodeId);
}
}
// set the merged active thread counts
clientDto.setActiveThreadCount(activeThreadCount);
// set the merged the validation errors
clientDto.setValidationErrors(ErrorMerger.normalizedMergedErrors(validationErrorMap, dtoMap.size()));
}
}