| /* |
| * 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.drill.exec.store.kudu; |
| |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.apache.calcite.schema.SchemaPlus; |
| import org.apache.calcite.schema.Table; |
| import org.apache.drill.common.exceptions.UserException; |
| import org.apache.drill.exec.physical.base.PhysicalOperator; |
| import org.apache.drill.exec.physical.base.Writer; |
| import org.apache.drill.exec.planner.logical.CreateTableEntry; |
| import org.apache.drill.exec.store.AbstractSchema; |
| import org.apache.drill.exec.store.AbstractSchemaFactory; |
| import org.apache.drill.exec.store.SchemaConfig; |
| import org.apache.kudu.Schema; |
| import org.apache.kudu.client.KuduTable; |
| import org.apache.kudu.client.ListTablesResponse; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import com.google.common.collect.Sets; |
| |
| public class KuduSchemaFactory extends AbstractSchemaFactory { |
| private static final Logger logger = LoggerFactory.getLogger(KuduSchemaFactory.class); |
| |
| private final KuduStoragePlugin plugin; |
| |
| public KuduSchemaFactory(KuduStoragePlugin plugin, String name) throws IOException { |
| super(name); |
| this.plugin = plugin; |
| } |
| |
| @Override |
| public void registerSchemas(SchemaConfig schemaConfig, SchemaPlus parent) throws IOException { |
| KuduTables schema = new KuduTables(getName()); |
| SchemaPlus hPlus = parent.add(getName(), schema); |
| schema.setHolder(hPlus); |
| } |
| |
| class KuduTables extends AbstractSchema { |
| |
| KuduTables(String name) { |
| super(Collections.emptyList(), name); |
| } |
| |
| public void setHolder(SchemaPlus plusOfThis) { |
| } |
| |
| @Override |
| public AbstractSchema getSubSchema(String name) { |
| return null; |
| } |
| |
| @Override |
| public Set<String> getSubSchemaNames() { |
| return Collections.emptySet(); |
| } |
| |
| @Override |
| public Table getTable(String name) { |
| KuduScanSpec scanSpec = new KuduScanSpec(name); |
| try { |
| KuduTable table = plugin.getClient().openTable(name); |
| Schema schema = table.getSchema(); |
| return new DrillKuduTable(getName(), plugin, schema, scanSpec); |
| } catch (Exception e) { |
| logger.warn("Failure while retrieving kudu table {}", name, e); |
| return null; |
| } |
| } |
| |
| @Override |
| public Set<String> getTableNames() { |
| try { |
| ListTablesResponse tablesList = plugin.getClient().getTablesList(); |
| return Sets.newHashSet(tablesList.getTablesList()); |
| } catch (Exception e) { |
| logger.warn("Failure reading kudu tables.", e); |
| return Collections.emptySet(); |
| } |
| } |
| |
| @Override |
| public CreateTableEntry createNewTable(final String tableName, List<String> partitionColumns) { |
| return new CreateTableEntry(){ |
| |
| @Override |
| public Writer getWriter(PhysicalOperator child) throws IOException { |
| return new KuduWriter(child, tableName, plugin); |
| } |
| |
| @Override |
| public List<String> getPartitionColumns() { |
| return Collections.emptyList(); |
| } |
| }; |
| } |
| |
| @Override |
| public void dropTable(String tableName) { |
| try { |
| plugin.getClient().deleteTable(tableName); |
| } catch (Exception e) { |
| throw UserException.dataWriteError(e) |
| .message("Failure while trying to drop table '%s'.", tableName) |
| .addContext("plugin", name) |
| .build(logger); |
| } |
| } |
| |
| @Override |
| public boolean isMutable() { |
| return true; |
| } |
| |
| @Override |
| public String getTypeName() { |
| return KuduStoragePluginConfig.NAME; |
| } |
| } |
| } |