/*
* 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 java.net.URI;
import java.util.ArrayList;
import java.util.Map;
import java.util.regex.Pattern;
import org.apache.nifi.cluster.manager.StatusMerger;
import org.apache.nifi.cluster.protocol.NodeIdentifier;
import org.apache.nifi.web.api.dto.CountersDTO;
import org.apache.nifi.web.api.dto.NodeCountersSnapshotDTO;
import org.apache.nifi.web.api.entity.CountersEntity;
public class CountersEndpointMerger extends AbstractNodeStatusEndpoint<CountersEntity, CountersDTO> {
public static final Pattern COUNTERS_URI_PATTERN = Pattern.compile("/nifi-api/counters");
@Override
public boolean canHandle(URI uri, String method) {
return "GET".equalsIgnoreCase(method) && COUNTERS_URI_PATTERN.matcher(uri.getPath()).matches();
}
@Override
protected Class<CountersEntity> getEntityClass() {
return CountersEntity.class;
}
@Override
protected CountersDTO getDto(CountersEntity entity) {
return entity.getCounters();
}
@Override
protected void mergeResponses(CountersDTO clientDto, Map<NodeIdentifier, CountersDTO> dtoMap, NodeIdentifier selectedNodeId) {
final CountersDTO mergedCounters = clientDto;
mergedCounters.setNodeSnapshots(new ArrayList<NodeCountersSnapshotDTO>());
final NodeCountersSnapshotDTO selectedNodeSnapshot = new NodeCountersSnapshotDTO();
selectedNodeSnapshot.setSnapshot(clientDto.getAggregateSnapshot().clone());
selectedNodeSnapshot.setAddress(selectedNodeId.getApiAddress());
selectedNodeSnapshot.setApiPort(selectedNodeId.getApiPort());
selectedNodeSnapshot.setNodeId(selectedNodeId.getId());
mergedCounters.getNodeSnapshots().add(selectedNodeSnapshot);
for (final Map.Entry<NodeIdentifier, CountersDTO> entry : dtoMap.entrySet()) {
final NodeIdentifier nodeId = entry.getKey();
final CountersDTO toMerge = entry.getValue();
if (toMerge == clientDto) {
continue;
}
StatusMerger.merge(mergedCounters, toMerge, nodeId.getId(), nodeId.getApiAddress(), nodeId.getApiPort());
}
}
}