| /* |
| * 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.googlesheets.schema; |
| |
| import com.google.api.services.drive.Drive; |
| import com.google.api.services.sheets.v4.Sheets; |
| import org.apache.calcite.schema.Table; |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.drill.common.exceptions.UserException; |
| import org.apache.drill.exec.planner.logical.DynamicDrillTable; |
| import org.apache.drill.exec.store.AbstractSchema; |
| import org.apache.drill.exec.store.SchemaConfig; |
| import org.apache.drill.exec.store.googlesheets.GoogleSheetsStoragePlugin; |
| import org.apache.drill.exec.store.googlesheets.GoogleSheetsStoragePluginConfig; |
| import org.apache.drill.exec.store.googlesheets.utils.GoogleSheetsUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Set; |
| |
| public class GoogleSheetsRootSchema extends AbstractSchema { |
| private static final Logger logger = LoggerFactory.getLogger(GoogleSheetsRootSchema.class); |
| |
| private final Map<String, DynamicDrillTable> activeTables = new HashMap<>(); |
| private final Map<String, GoogleSheetsDrillSchema> schemas = new HashMap<>(); |
| private final GoogleSheetsStoragePlugin plugin; |
| private final SchemaConfig schemaConfig; |
| private final Map<String, String> tokenMap; |
| |
| public GoogleSheetsRootSchema(GoogleSheetsStoragePlugin plugin, SchemaConfig schemaConfig) { |
| super(Collections.emptyList(), plugin.getName()); |
| this.schemaConfig = schemaConfig; |
| this.plugin = plugin; |
| Drive driveService = plugin.getDriveService(schemaConfig.getUserName()); |
| try { |
| this.tokenMap = GoogleSheetsUtils.getTokenToNameMap(driveService); |
| } catch (IOException e) { |
| throw UserException.internalError() |
| .message("Could not connect to Drive service: " + e.getMessage()) |
| .build(logger); |
| } |
| } |
| |
| @Override |
| public Set<String> getSubSchemaNames() { |
| return tokenMap.keySet(); |
| } |
| |
| @Override |
| public AbstractSchema getSubSchema(String name) { |
| // If the name is a file token but not mixed case, get the correct file token |
| if (GoogleSheetsUtils.isProbableFileToken(name) && !StringUtils.isMixedCase(name)) { |
| name = getFileTokenWithCorrectCase(tokenMap, name); |
| } |
| |
| GoogleSheetsDrillSchema schema = schemas.get(name); |
| // This level here represents the actual Google document. Attempt to validate that it exists, and |
| // if so, add it to the schema list. If not, throw an exception. |
| if (schema == null) { |
| Sheets service = plugin.getSheetsService(schemaConfig.getUserName()); |
| // At this point we know we have a valid sheet because we obtained the Sheet list, so we need to |
| // add the schema to the schemas list and return it. |
| schema = new GoogleSheetsDrillSchema(this, name, plugin, schemaConfig, service, |
| tokenMap.get(name)); |
| schemas.put(name, schema); |
| } |
| return schema; |
| } |
| |
| @Override |
| public Table getTable(String tableName) { |
| logger.debug("Getting table in root schema: {}", tableName); |
| DynamicDrillTable table = activeTables.computeIfAbsent(tableName, this::getDrillTable); |
| if (table != null) { |
| logger.debug("Found table: {}", table.getJdbcTableType().jdbcName); |
| } else { |
| logger.debug("Oh no! {} not found and returning null!", tableName); |
| } |
| return table; |
| } |
| |
| private DynamicDrillTable getDrillTable(String tableName) { |
| logger.debug("Getting Drill Table in Root schema {}", tableName); |
| return activeTables.get(tableName); |
| } |
| |
| @Override |
| public String getTypeName() { |
| return GoogleSheetsStoragePluginConfig.NAME; |
| } |
| |
| public Map<String, String> getTokenMap() { |
| return this.tokenMap; |
| } |
| |
| /** |
| * Drill automatically converts the file token to lower case during DDL queries. Since Google is case-sensitive, |
| * this method insures that we are using the correct file token. |
| * @return A file token in the correct case. |
| */ |
| public static String getFileTokenWithCorrectCase(Map<String, String> tokenMap, String lowercaseToken) { |
| if (StringUtils.isMixedCase(lowercaseToken)) { |
| return lowercaseToken; |
| } |
| Set<String> tokens = tokenMap.keySet(); |
| |
| for (String token : tokens) { |
| if (token.toLowerCase().contentEquals(lowercaseToken)) { |
| return token; |
| } |
| } |
| |
| throw UserException.internalError() |
| .message("Could not find token: " + lowercaseToken) |
| .build(logger); |
| } |
| } |