zjffdu commented on a change in pull request #8205: [FLINK-12238] [TABLE/SQL] Support database related operations in GenericHiveMetastoreCatalog and setup flink-connector-hive module URL: https://github.com/apache/flink/pull/8205#discussion_r276881587
########## File path: flink-connectors/flink-connector-hive/src/main/java/org/apache/flink/table/catalog/hive/GenericHiveMetastoreCatalog.java ########## @@ -0,0 +1,259 @@ +/* + * 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.flink.table.catalog.hive; + +import org.apache.flink.table.catalog.CatalogBaseTable; +import org.apache.flink.table.catalog.CatalogDatabase; +import org.apache.flink.table.catalog.GenericCatalogDatabase; +import org.apache.flink.table.catalog.ObjectPath; +import org.apache.flink.table.catalog.ReadableWritableCatalog; +import org.apache.flink.table.catalog.exceptions.CatalogException; +import org.apache.flink.table.catalog.exceptions.DatabaseAlreadyExistException; +import org.apache.flink.table.catalog.exceptions.DatabaseNotEmptyException; +import org.apache.flink.table.catalog.exceptions.DatabaseNotExistException; +import org.apache.flink.table.catalog.exceptions.TableAlreadyExistException; +import org.apache.flink.table.catalog.exceptions.TableNotExistException; +import org.apache.flink.util.StringUtils; + +import org.apache.hadoop.hive.conf.HiveConf; +import org.apache.hadoop.hive.metastore.HiveMetaStoreClient; +import org.apache.hadoop.hive.metastore.IMetaStoreClient; +import org.apache.hadoop.hive.metastore.RetryingMetaStoreClient; +import org.apache.hadoop.hive.metastore.api.AlreadyExistsException; +import org.apache.hadoop.hive.metastore.api.Database; +import org.apache.hadoop.hive.metastore.api.InvalidOperationException; +import org.apache.hadoop.hive.metastore.api.MetaException; +import org.apache.hadoop.hive.metastore.api.NoSuchObjectException; +import org.apache.thrift.TException; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.List; + +import static org.apache.flink.util.Preconditions.checkArgument; +import static org.apache.flink.util.Preconditions.checkNotNull; + +/** + * A catalog that persists all Flink streaming and batch metadata by using Hive metastore as a persistent storage. + */ +public class GenericHiveMetastoreCatalog implements ReadableWritableCatalog { + private static final Logger LOG = LoggerFactory.getLogger(GenericHiveMetastoreCatalog.class); + + public static final String DEFAULT_DB = "default"; + + private final String catalogName; + private final HiveConf hiveConf; + + private String currentDatabase = DEFAULT_DB; + private IMetaStoreClient client; + + public GenericHiveMetastoreCatalog(String catalogName, String hivemetastoreURI) { + this(catalogName, getHiveConf(hivemetastoreURI)); + } + + public GenericHiveMetastoreCatalog(String catalogName, HiveConf hiveConf) { + checkArgument(!StringUtils.isNullOrWhitespaceOnly(catalogName), "catalogName cannot be null or empty"); + this.catalogName = catalogName; + + this.hiveConf = checkNotNull(hiveConf, "hiveConf cannot be null"); + LOG.info("Created GenericHiveMetastoreCatalog '{}'", catalogName); + } + + private static HiveConf getHiveConf(String hiveMetastoreURI) { + checkArgument(!StringUtils.isNullOrWhitespaceOnly(hiveMetastoreURI), "hiveMetastoreURI cannot be null or empty"); + + HiveConf hiveConf = new HiveConf(); + hiveConf.setVar(HiveConf.ConfVars.METASTOREURIS, hiveMetastoreURI); + return hiveConf; + } + + private static IMetaStoreClient getmetastoreClient(HiveConf hiveConf) { Review comment: nit: `getmetastoreClient` -> `getMetaStoreClient` ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
