/*
* 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.ProcessorDTO;
import org.apache.nifi.web.api.dto.PropertyDescriptorDTO;
import org.apache.nifi.web.api.dto.status.ProcessorStatusDTO;
import org.apache.nifi.web.api.entity.ProcessorEntity;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
public class ProcessorEntityMerger implements ComponentEntityMerger<ProcessorEntity>, ComponentEntityStatusMerger<ProcessorStatusDTO> {
@Override
public void merge(ProcessorEntity clientEntity, Map<NodeIdentifier, ProcessorEntity> entityMap) {
ComponentEntityMerger.super.merge(clientEntity, entityMap);
for (Map.Entry<NodeIdentifier, ProcessorEntity> entry : entityMap.entrySet()) {
final NodeIdentifier nodeId = entry.getKey();
final ProcessorEntity entityStatus = entry.getValue();
if (entityStatus != clientEntity) {
mergeStatus(clientEntity.getStatus(), clientEntity.getPermissions().getCanRead(), entry.getValue().getStatus(), entry.getValue().getPermissions().getCanRead(), entry.getKey());
}
}
}
/**
* Merges the ProcessorEntity responses.
*
* @param clientEntity the entity being returned to the client
* @param entityMap all node responses
*/
public void mergeComponents(final ProcessorEntity clientEntity, final Map<NodeIdentifier, ProcessorEntity> entityMap) {
final ProcessorDTO clientDto = clientEntity.getComponent();
final Map<NodeIdentifier, ProcessorDTO> dtoMap = new HashMap<>();
for (final Map.Entry<NodeIdentifier, ProcessorEntity> entry : entityMap.entrySet()) {
final ProcessorEntity nodeProcEntity = entry.getValue();
final ProcessorDTO nodeProcDto = nodeProcEntity.getComponent();
dtoMap.put(entry.getKey(), nodeProcDto);
}
mergeDtos(clientDto, dtoMap);
}
@Override
public void mergeStatus(ProcessorStatusDTO clientStatus, boolean clientStatusReadablePermission, ProcessorStatusDTO status, boolean statusReadablePermission, NodeIdentifier
statusNodeIdentifier) {
StatusMerger.merge(clientStatus, clientStatusReadablePermission, status, statusReadablePermission, statusNodeIdentifier.getId(), statusNodeIdentifier.getApiAddress(),
statusNodeIdentifier.getApiPort());
}
private static void mergeDtos(final ProcessorDTO clientDto, final Map<NodeIdentifier, ProcessorDTO> 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<>();
for (final Map.Entry<NodeIdentifier, ProcessorDTO> nodeEntry : dtoMap.entrySet()) {
final ProcessorDTO nodeProcessor = nodeEntry.getValue();
// merge the validation errors and aggregate the property descriptors, if authorized
if (nodeProcessor != null) {
final NodeIdentifier nodeId = nodeEntry.getKey();
// merge the validation errors
ErrorMerger.mergeErrors(validationErrorMap, nodeId, nodeProcessor.getValidationErrors());
// aggregate the property descriptors
nodeProcessor.getConfig().getDescriptors().values().stream().forEach(propertyDescriptor -> {
propertyDescriptorMap.computeIfAbsent(propertyDescriptor.getName(), nodeIdToPropertyDescriptor -> new HashMap<>()).put(nodeId, propertyDescriptor);
});
// if any node does not support multiple versions (null or false), make it unavailable
if (clientDto.getMultipleVersionsAvailable() == null || !Boolean.TRUE.equals(nodeProcessor.getMultipleVersionsAvailable())) {
clientDto.setMultipleVersionsAvailable(Boolean.FALSE);
}
}
}
// 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.getConfig().getDescriptors().get(propertyDescriptor.getName());
PropertyDescriptorDtoMerger.merge(clientPropertyDescriptor, propertyDescriptorByNodeId);
}
}
// set the merged the validation errors
clientDto.setValidationErrors(ErrorMerger.normalizedMergedErrors(validationErrorMap, dtoMap.size()));
}
}