/*
* 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.coordination.http.endpoints;
import org.apache.nifi.cluster.manager.BulletinMerger;
import org.apache.nifi.cluster.manager.NodeResponse;
import org.apache.nifi.cluster.protocol.NodeIdentifier;
import org.apache.nifi.web.api.dto.BulletinBoardDTO;
import org.apache.nifi.web.api.entity.BulletinBoardEntity;
import org.apache.nifi.web.api.entity.BulletinEntity;
import java.net.URI;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.regex.Pattern;
public class BulletinBoardEndpointMerger extends AbstractSingleDTOEndpoint<BulletinBoardEntity, BulletinBoardDTO> {
public static final Pattern BULLETIN_BOARD_URI_PATTERN = Pattern.compile("/nifi-api/flow/bulletin-board");
@Override
public boolean canHandle(URI uri, String method) {
return "GET".equalsIgnoreCase(method) && BULLETIN_BOARD_URI_PATTERN.matcher(uri.getPath()).matches();
}
@Override
protected Class<BulletinBoardEntity> getEntityClass() {
return BulletinBoardEntity.class;
}
@Override
protected BulletinBoardDTO getDto(BulletinBoardEntity entity) {
return entity.getBulletinBoard();
}
@Override
protected void mergeResponses(BulletinBoardDTO clientDto, Map<NodeIdentifier, BulletinBoardDTO> dtoMap, Set<NodeResponse> successfulResponses, Set<NodeResponse> problematicResponses) {
final Map<NodeIdentifier, List<BulletinEntity>> bulletinEntities = new HashMap<>();
for (final Map.Entry<NodeIdentifier, BulletinBoardDTO> entry : dtoMap.entrySet()) {
final NodeIdentifier nodeIdentifier = entry.getKey();
final BulletinBoardDTO boardDto = entry.getValue();
boardDto.getBulletins().forEach(bulletin -> {
bulletinEntities.computeIfAbsent(nodeIdentifier, nodeId -> new ArrayList<>()).add(bulletin);
});
}
clientDto.setBulletins(BulletinMerger.mergeBulletins(bulletinEntities, dtoMap.size()));
}
}