| /* |
| * 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.dfs; |
| |
| import java.io.IOException; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.calcite.schema.Function; |
| import org.apache.calcite.schema.SchemaPlus; |
| import org.apache.calcite.schema.Table; |
| |
| import org.apache.drill.common.logical.OAuthConfig; |
| import org.apache.drill.exec.store.AbstractSchemaFactory; |
| import org.apache.drill.exec.store.StorageStrategy; |
| import org.apache.drill.exec.planner.logical.CreateTableEntry; |
| import org.apache.drill.exec.store.AbstractSchema; |
| import org.apache.drill.exec.store.PartitionNotFoundException; |
| import org.apache.drill.exec.store.SchemaConfig; |
| import org.apache.drill.exec.store.dfs.WorkspaceSchemaFactory.WorkspaceSchema; |
| |
| import org.apache.drill.exec.util.DrillFileSystemUtil; |
| import org.apache.drill.exec.util.ImpersonationUtil; |
| import org.apache.hadoop.fs.FileStatus; |
| import org.apache.hadoop.fs.Path; |
| |
| /** |
| * This is the top level schema that responds to root level path requests. Also supports |
| */ |
| public class FileSystemSchemaFactory extends AbstractSchemaFactory { |
| |
| public static final String LOCAL_FS_SCHEME = "file"; |
| |
| private List<WorkspaceSchemaFactory> factories; |
| protected FileSystemPlugin plugin; |
| |
| public FileSystemSchemaFactory(String schemaName, List<WorkspaceSchemaFactory> factories) { |
| super(schemaName); |
| // when the correspondent FileSystemPlugin is not passed in, we dig into ANY workspace factory to get it. |
| if (factories.size() > 0) { |
| this.plugin = factories.get(0).getPlugin(); |
| } |
| this.factories = factories; |
| } |
| |
| public FileSystemSchemaFactory(FileSystemPlugin plugin, String schemaName, List<WorkspaceSchemaFactory> factories) { |
| super(schemaName); |
| this.plugin = plugin; |
| this.factories = factories; |
| } |
| |
| @Override |
| public void registerSchemas(SchemaConfig schemaConfig, SchemaPlus parent) throws IOException { |
| FileSystemSchema schema = new FileSystemSchema(getName(), schemaConfig); |
| SchemaPlus plusOfThis = parent.add(schema.getName(), schema); |
| schema.setPlus(plusOfThis); |
| } |
| |
| public class FileSystemSchema extends AbstractSchema { |
| |
| private final WorkspaceSchema defaultSchema; |
| private final Map<String, WorkspaceSchema> schemaMap = new HashMap<>(); |
| |
| public FileSystemSchema(String name, SchemaConfig schemaConfig) throws IOException { |
| super(Collections.emptyList(), name); |
| final DrillFileSystem fs = ImpersonationUtil.createFileSystem(schemaConfig.getUserName(), plugin.getFsConf()); |
| // Set OAuth Information |
| OAuthConfig oAuthConfig = plugin.getConfig().oAuthConfig(); |
| if (oAuthConfig != null) { |
| OAuthEnabledFileSystem underlyingFileSystem = (OAuthEnabledFileSystem) fs.getUnderlyingFs(); |
| underlyingFileSystem.setPluginConfig(plugin.getConfig()); |
| underlyingFileSystem.setTokenTable(plugin.getTokenTable()); |
| underlyingFileSystem.setoAuthConfig(plugin.getConfig().oAuthConfig()); |
| } |
| |
| for(WorkspaceSchemaFactory f : factories){ |
| WorkspaceSchema s = f.createSchema(getSchemaPath(), schemaConfig, fs); |
| if (s != null) { |
| schemaMap.put(s.getName(), s); |
| } |
| } |
| defaultSchema = schemaMap.get(DEFAULT_WS_NAME); |
| } |
| |
| void setPlus(SchemaPlus plusOfThis){ |
| for(WorkspaceSchema s : schemaMap.values()){ |
| plusOfThis.add(s.getName(), s); |
| } |
| } |
| |
| @Override |
| public Iterable<String> getSubPartitions(String table, |
| List<String> partitionColumns, |
| List<String> partitionValues |
| ) throws PartitionNotFoundException { |
| List<FileStatus> fileStatuses; |
| try { |
| fileStatuses = DrillFileSystemUtil.listDirectories(defaultSchema.getFS(), new Path(defaultSchema.getDefaultLocation(), table), false); |
| } catch (IOException e) { |
| throw new PartitionNotFoundException("Error finding partitions for table " + table, e); |
| } |
| return new SubDirectoryList(fileStatuses); |
| } |
| |
| @Override |
| public boolean showInInformationSchema() { |
| return false; |
| } |
| |
| @Override |
| public String getTypeName() { |
| return FileSystemConfig.NAME; |
| } |
| |
| @Override |
| public Table getTable(String name) { |
| return defaultSchema.getTable(name); |
| } |
| |
| @Override |
| public Collection<Function> getFunctions(String name) { |
| return defaultSchema.getFunctions(name); |
| } |
| |
| @Override |
| public Set<String> getFunctionNames() { |
| return defaultSchema.getFunctionNames(); |
| } |
| |
| @Override |
| public AbstractSchema getSubSchema(String name) { |
| return schemaMap.get(name); |
| } |
| |
| @Override |
| public Set<String> getSubSchemaNames() { |
| return schemaMap.keySet(); |
| } |
| |
| @Override |
| public Set<String> getTableNames() { |
| return defaultSchema.getTableNames(); |
| } |
| |
| @Override |
| public boolean isMutable() { |
| return defaultSchema.isMutable(); |
| } |
| |
| @Override |
| public CreateTableEntry createNewTable(String tableName, List<String> partitionColumns, StorageStrategy storageStrategy) { |
| return defaultSchema.createNewTable(tableName, partitionColumns, storageStrategy); |
| } |
| |
| @Override |
| public CreateTableEntry createStatsTable(String tableName) { |
| return defaultSchema.createStatsTable(tableName); |
| } |
| |
| @Override |
| public CreateTableEntry appendToStatsTable(String tableName) { |
| return defaultSchema.appendToStatsTable(tableName); |
| } |
| |
| @Override |
| public Table getStatsTable(String tableName) { |
| return defaultSchema.getStatsTable(tableName); |
| } |
| |
| @Override |
| public AbstractSchema getDefaultSchema() { |
| return defaultSchema; |
| } |
| } |
| } |