/*
* 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.RemoteProcessGroupContentsDTO;
import org.apache.nifi.web.api.dto.RemoteProcessGroupDTO;
import org.apache.nifi.web.api.dto.RemoteProcessGroupPortDTO;
import org.apache.nifi.web.api.dto.status.RemoteProcessGroupStatusDTO;
import org.apache.nifi.web.api.entity.RemoteProcessGroupEntity;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
public class RemoteProcessGroupEntityMerger implements ComponentEntityMerger<RemoteProcessGroupEntity>, ComponentEntityStatusMerger<RemoteProcessGroupStatusDTO> {
@Override
public void merge(RemoteProcessGroupEntity clientEntity, Map<NodeIdentifier, RemoteProcessGroupEntity> entityMap) {
ComponentEntityMerger.super.merge(clientEntity, entityMap);
for (Map.Entry<NodeIdentifier, RemoteProcessGroupEntity> entry : entityMap.entrySet()) {
final RemoteProcessGroupEntity entityStatus = entry.getValue();
if (entityStatus != clientEntity) {
mergeStatus(clientEntity.getStatus(), clientEntity.getPermissions().getCanRead(), entry.getValue().getStatus(), entry.getValue().getPermissions().getCanRead(), entry.getKey());
}
}
}
/**
* Merges the RemoteProcessGroupEntity responses.
*
* @param clientEntity the entity being returned to the client
* @param entityMap all node responses
*/
@Override
public void mergeComponents(final RemoteProcessGroupEntity clientEntity, final Map<NodeIdentifier, RemoteProcessGroupEntity> entityMap) {
final RemoteProcessGroupDTO clientDto = clientEntity.getComponent();
final Map<NodeIdentifier, RemoteProcessGroupDTO> dtoMap = new HashMap<>();
for (final Map.Entry<NodeIdentifier, RemoteProcessGroupEntity> entry : entityMap.entrySet()) {
final RemoteProcessGroupEntity nodeProcEntity = entry.getValue();
final RemoteProcessGroupDTO nodeProcDto = nodeProcEntity.getComponent();
dtoMap.put(entry.getKey(), nodeProcDto);
}
mergeDtos(clientDto, dtoMap);
}
@Override
public void mergeStatus(RemoteProcessGroupStatusDTO clientStatus, boolean clientStatusReadablePermission, RemoteProcessGroupStatusDTO status,
boolean statusReadablePermission, NodeIdentifier statusNodeIdentifier) {
StatusMerger.merge(clientStatus, clientStatusReadablePermission, status, statusReadablePermission, statusNodeIdentifier.getId(), statusNodeIdentifier.getApiAddress(),
statusNodeIdentifier.getApiPort());
}
private static void mergeDtos(final RemoteProcessGroupDTO clientDto, final Map<NodeIdentifier, RemoteProcessGroupDTO> dtoMap) {
// if unauthorized for the client dto, simple return
if (clientDto == null) {
return;
}
final RemoteProcessGroupContentsDTO remoteProcessGroupContents = clientDto.getContents();
final Map<String, Set<NodeIdentifier>> authorizationErrorMap = new HashMap<>();
final Map<String, Set<NodeIdentifier>> validationErrorMap = new HashMap<>();
Boolean mergedIsTargetSecure = null;
final Set<RemoteProcessGroupPortDTO> mergedInputPorts = new HashSet<>();
final Set<RemoteProcessGroupPortDTO> mergedOutputPorts = new HashSet<>();
for (final Map.Entry<NodeIdentifier, RemoteProcessGroupDTO> nodeEntry : dtoMap.entrySet()) {
final RemoteProcessGroupDTO nodeRemoteProcessGroup = nodeEntry.getValue();
// consider the node remote process group when authorized
if (nodeRemoteProcessGroup != null) {
final NodeIdentifier nodeId = nodeEntry.getKey();
// merge the authorization errors
ErrorMerger.mergeErrors(authorizationErrorMap, nodeId, nodeRemoteProcessGroup.getAuthorizationIssues());
ErrorMerger.mergeErrors(validationErrorMap, nodeId, nodeRemoteProcessGroup.getValidationErrors());
// use the first target secure flag since they will all be the same
final Boolean nodeIsTargetSecure = nodeRemoteProcessGroup.isTargetSecure();
if (mergedIsTargetSecure == null) {
mergedIsTargetSecure = nodeIsTargetSecure;
}
// merge the ports in the contents
final RemoteProcessGroupContentsDTO nodeRemoteProcessGroupContentsDto = nodeRemoteProcessGroup.getContents();
if (remoteProcessGroupContents != null && nodeRemoteProcessGroupContentsDto != null) {
if (nodeRemoteProcessGroupContentsDto.getInputPorts() != null) {
mergedInputPorts.addAll(nodeRemoteProcessGroupContentsDto.getInputPorts());
}
if (nodeRemoteProcessGroupContentsDto.getOutputPorts() != null) {
mergedOutputPorts.addAll(nodeRemoteProcessGroupContentsDto.getOutputPorts());
}
}
}
}
if (remoteProcessGroupContents != null) {
if (!mergedInputPorts.isEmpty()) {
remoteProcessGroupContents.setInputPorts(mergedInputPorts);
}
if (!mergedOutputPorts.isEmpty()) {
remoteProcessGroupContents.setOutputPorts(mergedOutputPorts);
}
}
if (mergedIsTargetSecure != null) {
clientDto.setTargetSecure(mergedIsTargetSecure);
}
// set the merged the validation errors
clientDto.setAuthorizationIssues(ErrorMerger.normalizedMergedErrors(authorizationErrorMap, dtoMap.size()));
clientDto.setValidationErrors(ErrorMerger.normalizedMergedErrors(validationErrorMap, dtoMap.size()));
}
}