| /** |
| * 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.atlas.repository.impexp; |
| |
| import org.apache.atlas.exception.AtlasBaseException; |
| import org.apache.atlas.model.instance.AtlasEntity; |
| import org.apache.atlas.model.instance.AtlasObjectId; |
| import org.apache.atlas.model.instance.EntityMutationResponse; |
| import org.apache.atlas.repository.store.graph.v2.AtlasEntityStoreV2; |
| import org.apache.atlas.repository.store.graph.v2.AtlasEntityStream; |
| import org.apache.atlas.type.AtlasEntityType; |
| import org.apache.atlas.type.AtlasTypeRegistry; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.stereotype.Component; |
| |
| import javax.inject.Inject; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import static org.apache.atlas.repository.impexp.AuditsWriter.getCurrentClusterName; |
| |
| @Component |
| public class HdfsPathEntityCreator { |
| protected static final Logger LOG = LoggerFactory.getLogger(HdfsPathEntityCreator.class); |
| |
| public static final String HDFS_PATH_TYPE = "hdfs_path"; |
| public static final String HDFS_PATH_ATTRIBUTE_NAME_NAME = "name"; |
| public static final String HDFS_PATH_ATTRIBUTE_NAME_CLUSTER_NAME = "clusterName"; |
| public static final String HDFS_PATH_ATTRIBUTE_NAME_PATH = "path"; |
| public static final String HDFS_PATH_ATTRIBUTE_QUALIFIED_NAME = "qualifiedName"; |
| |
| private static final String QUALIFIED_NAME_FORMAT = "%s@%s"; |
| private final String PATH_SEPARATOR = "/"; |
| |
| private AtlasTypeRegistry typeRegistry; |
| private AtlasEntityStoreV2 entityStore; |
| |
| @Inject |
| public HdfsPathEntityCreator(AtlasTypeRegistry typeRegistry, AtlasEntityStoreV2 entityStore) { |
| this.typeRegistry = typeRegistry; |
| this.entityStore = entityStore; |
| } |
| |
| public AtlasEntity.AtlasEntityWithExtInfo getCreateEntity(AtlasObjectId item) throws AtlasBaseException { |
| if(item.getUniqueAttributes() == null || !item.getUniqueAttributes().containsKey(HDFS_PATH_ATTRIBUTE_NAME_PATH)) { |
| return null; |
| } |
| |
| return getCreateEntity((String) item.getUniqueAttributes().get(HDFS_PATH_ATTRIBUTE_NAME_PATH)); |
| } |
| |
| public AtlasEntity.AtlasEntityWithExtInfo getCreateEntity(String path) throws AtlasBaseException { |
| return getCreateEntity(path, getCurrentClusterName()); |
| } |
| |
| public AtlasEntity.AtlasEntityWithExtInfo getCreateEntity(String path, String clusterName) throws AtlasBaseException { |
| String pathWithTrailingSeparator = getPathWithTrailingSeparator(path); |
| AtlasEntityType hdfsPathEntityType = getHdfsPathEntityType(); |
| AtlasEntity.AtlasEntityWithExtInfo entityWithExtInfo = getHDFSPathEntity(hdfsPathEntityType, pathWithTrailingSeparator, clusterName); |
| if(entityWithExtInfo != null) { |
| return entityWithExtInfo; |
| } |
| |
| AtlasEntity entity = createHDFSPathEntity(hdfsPathEntityType, pathWithTrailingSeparator, clusterName); |
| AtlasEntityStream entityStream = new AtlasEntityStream(entity); |
| EntityMutationResponse entityMutationResponse = entityStore.createOrUpdate(entityStream, false); |
| if(entityMutationResponse.getCreatedEntities().size() == 0) { |
| return null; |
| } |
| |
| return getHDFSPathEntity(hdfsPathEntityType, pathWithTrailingSeparator, clusterName); |
| } |
| |
| private AtlasEntity createHDFSPathEntity(AtlasEntityType hdfsPathEntityType, String path, String clusterName) { |
| AtlasEntity entity = hdfsPathEntityType.createDefaultValue(); |
| |
| entity.setAttribute(HDFS_PATH_ATTRIBUTE_QUALIFIED_NAME, getQualifiedName(path, clusterName)); |
| entity.setAttribute(HDFS_PATH_ATTRIBUTE_NAME_PATH, path); |
| entity.setAttribute(HDFS_PATH_ATTRIBUTE_NAME_NAME, path); |
| entity.setAttribute(HDFS_PATH_ATTRIBUTE_NAME_CLUSTER_NAME, clusterName); |
| |
| return entity; |
| } |
| |
| private AtlasEntity.AtlasEntityWithExtInfo getHDFSPathEntity(AtlasEntityType hdfsPathEntityType, String path, String clusterName) { |
| try { |
| return entityStore.getByUniqueAttributes(hdfsPathEntityType, getUniqueAttributes(path, clusterName)); |
| } catch (AtlasBaseException e) { |
| return null; |
| } |
| } |
| |
| private AtlasEntityType getHdfsPathEntityType() throws AtlasBaseException { |
| return (AtlasEntityType) typeRegistry.getType(HDFS_PATH_TYPE); |
| } |
| |
| private Map<String,Object> getUniqueAttributes(String path, String clusterName) { |
| Map<String,Object> ret = new HashMap<String, Object>(); |
| ret.put(HDFS_PATH_ATTRIBUTE_QUALIFIED_NAME, getQualifiedName(path, clusterName)); |
| return ret; |
| } |
| |
| private String getPathWithTrailingSeparator(String path) { |
| if(path.endsWith(PATH_SEPARATOR)) { |
| return path; |
| } |
| |
| return path + PATH_SEPARATOR; |
| } |
| |
| public static String getQualifiedName(String path, String clusterName) { |
| return String.format(QUALIFIED_NAME_FORMAT, path, clusterName); |
| } |
| } |