| /* |
| * 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.Map; |
| import java.util.Set; |
| import java.util.regex.Pattern; |
| |
| import org.apache.nifi.cluster.manager.NodeResponse; |
| import org.apache.nifi.cluster.protocol.NodeIdentifier; |
| import org.apache.nifi.web.api.dto.provenance.ProvenanceEventDTO; |
| import org.apache.nifi.web.api.entity.ProvenanceEventEntity; |
| |
| public class ProvenanceEventEndpointMerger extends AbstractSingleDTOEndpoint<ProvenanceEventEntity, ProvenanceEventDTO> { |
| public static final Pattern PROVENANCE_EVENT_URI = Pattern.compile("/nifi-api/provenance/events/[0-9]+"); |
| |
| @Override |
| public boolean canHandle(URI uri, String method) { |
| return "GET".equalsIgnoreCase(method) && PROVENANCE_EVENT_URI.matcher(uri.getPath()).matches(); |
| } |
| |
| @Override |
| protected Class<ProvenanceEventEntity> getEntityClass() { |
| return ProvenanceEventEntity.class; |
| } |
| |
| @Override |
| protected ProvenanceEventDTO getDto(ProvenanceEventEntity entity) { |
| return entity.getProvenanceEvent(); |
| } |
| |
| @Override |
| protected void mergeResponses(ProvenanceEventDTO clientDto, Map<NodeIdentifier, ProvenanceEventDTO> dtoMap, Set<NodeResponse> successfulResponses, Set<NodeResponse> problematicResponses) { |
| // The request for a Provenance Event is replicated to a single Node. We simply update its cluster node info. |
| // However, we only do this if the cluster node info isn't set, because if this is replicated across the cluster, |
| // the cluster coordinator will have already set it, and we will be receiving the response from the cluster |
| // coordinator. We do not want to overwrite this value on all DTO's with the cluster coordinator's information. |
| if (clientDto.getClusterNodeId() == null || clientDto.getClusterNodeAddress() == null) { |
| final NodeIdentifier nodeId = successfulResponses.iterator().next().getNodeId(); |
| clientDto.setClusterNodeId(nodeId.getId()); |
| clientDto.setClusterNodeAddress(nodeId.getApiAddress() + ":" + nodeId.getApiPort()); |
| } |
| } |
| } |