/*
* 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.coordination.http.EndpointResponseMerger;
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.entity.BulletinEntity;
import org.apache.nifi.web.api.entity.ControllerBulletinsEntity;
import java.net.URI;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.regex.Pattern;
import static org.apache.nifi.cluster.manager.BulletinMerger.BULLETIN_COMPARATOR;
import static org.apache.nifi.reporting.BulletinRepository.MAX_BULLETINS_FOR_CONTROLLER;
import static org.apache.nifi.reporting.BulletinRepository.MAX_BULLETINS_PER_COMPONENT;
public class ControllerBulletinsEndpointMerger extends AbstractSingleEntityEndpoint<ControllerBulletinsEntity> implements EndpointResponseMerger {
public static final Pattern CONTROLLER_BULLETINS_URI_PATTERN = Pattern.compile("/nifi-api/flow/controller/bulletins");
@Override
public boolean canHandle(URI uri, String method) {
return "GET".equalsIgnoreCase(method) && CONTROLLER_BULLETINS_URI_PATTERN.matcher(uri.getPath()).matches();
}
@Override
protected Class<ControllerBulletinsEntity> getEntityClass() {
return ControllerBulletinsEntity.class;
}
@Override
protected void mergeResponses(ControllerBulletinsEntity clientEntity, Map<NodeIdentifier, ControllerBulletinsEntity> entityMap,
Set<NodeResponse> successfulResponses, Set<NodeResponse> problematicResponses) {
final Map<NodeIdentifier, List<BulletinEntity>> bulletinDtos = new HashMap<>();
final Map<NodeIdentifier, List<BulletinEntity>> controllerServiceBulletinDtos = new HashMap<>();
final Map<NodeIdentifier, List<BulletinEntity>> reportingTaskBulletinDtos = new HashMap<>();
for (final Map.Entry<NodeIdentifier, ControllerBulletinsEntity> entry : entityMap.entrySet()) {
final NodeIdentifier nodeIdentifier = entry.getKey();
final ControllerBulletinsEntity entity = entry.getValue();
final String nodeAddress = nodeIdentifier.getApiAddress() + ":" + nodeIdentifier.getApiPort();
// consider the bulletins if present and authorized
if (entity.getBulletins() != null) {
entity.getBulletins().forEach(bulletin -> {
if (bulletin.getNodeAddress() == null) {
bulletin.setNodeAddress(nodeAddress);
}
bulletinDtos.computeIfAbsent(nodeIdentifier, nodeId -> new ArrayList<>()).add(bulletin);
});
}
if (entity.getControllerServiceBulletins() != null) {
entity.getControllerServiceBulletins().forEach(bulletin -> {
if (bulletin.getNodeAddress() == null) {
bulletin.setNodeAddress(nodeAddress);
}
controllerServiceBulletinDtos.computeIfAbsent(nodeIdentifier, nodeId -> new ArrayList<>()).add(bulletin);
});
}
if (entity.getReportingTaskBulletins() != null) {
entity.getReportingTaskBulletins().forEach(bulletin -> {
if (bulletin.getNodeAddress() == null) {
bulletin.setNodeAddress(nodeAddress);
}
reportingTaskBulletinDtos.computeIfAbsent(nodeIdentifier, nodeId -> new ArrayList<>()).add(bulletin);
});
}
}
clientEntity.setBulletins(BulletinMerger.mergeBulletins(bulletinDtos, entityMap.size()));
clientEntity.setControllerServiceBulletins(BulletinMerger.mergeBulletins(controllerServiceBulletinDtos, entityMap.size()));
clientEntity.setReportingTaskBulletins(BulletinMerger.mergeBulletins(reportingTaskBulletinDtos, entityMap.size()));
// sort the bulletins
Collections.sort(clientEntity.getBulletins(), BULLETIN_COMPARATOR);
Collections.sort(clientEntity.getControllerServiceBulletins(), BULLETIN_COMPARATOR);
Collections.sort(clientEntity.getReportingTaskBulletins(), BULLETIN_COMPARATOR);
// prune the response to only include the max number of bulletins
if (clientEntity.getBulletins().size() > MAX_BULLETINS_FOR_CONTROLLER) {
clientEntity.setBulletins(clientEntity.getBulletins().subList(0, MAX_BULLETINS_FOR_CONTROLLER));
}
if (clientEntity.getControllerServiceBulletins().size() > MAX_BULLETINS_PER_COMPONENT) {
clientEntity.setControllerServiceBulletins(clientEntity.getControllerServiceBulletins().subList(0, MAX_BULLETINS_PER_COMPONENT));
}
if (clientEntity.getReportingTaskBulletins().size() > MAX_BULLETINS_PER_COMPONENT) {
clientEntity.setReportingTaskBulletins(clientEntity.getReportingTaskBulletins().subList(0, MAX_BULLETINS_PER_COMPONENT));
}
}
}