| /* |
| * 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.phoenix; |
| |
| import java.io.IOException; |
| import java.security.PrivilegedAction; |
| import java.security.PrivilegedExceptionAction; |
| import java.sql.ResultSet; |
| import java.sql.SQLException; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| |
| import org.apache.calcite.adapter.jdbc.JdbcSchema; |
| import org.apache.calcite.schema.Schema; |
| import org.apache.calcite.schema.SchemaPlus; |
| import org.apache.calcite.schema.Table; |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.drill.common.map.CaseInsensitiveMap; |
| import org.apache.drill.exec.ExecConstants; |
| import org.apache.drill.exec.store.AbstractSchema; |
| import org.apache.drill.exec.store.AbstractSchemaFactory; |
| import org.apache.drill.exec.store.SchemaConfig; |
| import org.apache.drill.exec.util.ImpersonationUtil; |
| import org.apache.hadoop.security.UserGroupInformation; |
| |
| import static org.apache.drill.exec.util.ImpersonationUtil.getProcessUserName; |
| |
| public class PhoenixSchemaFactory extends AbstractSchemaFactory { |
| |
| private final PhoenixStoragePlugin plugin; |
| private final Map<String, PhoenixSchema> schemaMap; |
| private PhoenixSchema rootSchema; |
| private final boolean isDrillImpersonationEnabled; |
| private final UserGroupInformation ugi = ImpersonationUtil.getProcessUserUGI(); |
| |
| public PhoenixSchemaFactory(PhoenixStoragePlugin plugin) { |
| super(plugin.getName()); |
| this.plugin = plugin; |
| this.schemaMap = new HashMap<>(); |
| isDrillImpersonationEnabled = plugin.getContext().getConfig().getBoolean(ExecConstants.IMPERSONATION_ENABLED); |
| } |
| |
| @Override |
| public void registerSchemas(SchemaConfig schemaConfig, SchemaPlus parent) throws IOException { |
| try { |
| rootSchema = new PhoenixSchema(schemaConfig, plugin, Collections.emptyList(), plugin.getName()); |
| if (isDrillImpersonationEnabled) { |
| ugi.doAs((PrivilegedExceptionAction<Void>) () -> { |
| locateSchemas(schemaConfig, rootSchema.getUser(schemaConfig.getUserName(), getProcessUserName())); |
| return null; |
| }); |
| } else { |
| locateSchemas(schemaConfig, rootSchema.getUser(schemaConfig.getUserName(), getProcessUserName())); |
| } |
| } catch (SQLException | InterruptedException e) { |
| throw new IOException(e); |
| } |
| parent.add(getName(), rootSchema); // resolve the top-level schema. |
| for (String schemaName : rootSchema.getSubSchemaNames()) { |
| PhoenixSchema schema = (PhoenixSchema) rootSchema.getSubSchema(schemaName); |
| parent.add(schemaName, schema); // provide all available schemas for calcite. |
| } |
| } |
| |
| private void locateSchemas(SchemaConfig schemaConfig, String userName) throws SQLException { |
| try (ResultSet rs = plugin.getDataSource(userName).getConnection().getMetaData().getSchemas()) { |
| while (rs.next()) { |
| final String schemaName = rs.getString(1); // lookup the schema (or called database). |
| PhoenixSchema schema = new PhoenixSchema(schemaConfig, plugin, Arrays.asList(getName()), schemaName); |
| schemaMap.put(schemaName, schema); |
| } |
| rootSchema.addSchemas(schemaMap); |
| } |
| } |
| |
| class PhoenixSchema extends AbstractSchema { |
| private final JdbcSchema jdbcSchema; |
| private final Map<String, PhoenixSchema> schemaMap = CaseInsensitiveMap.newHashMap(); |
| |
| public PhoenixSchema(SchemaConfig schemaConfig, |
| PhoenixStoragePlugin plugin, |
| List<String> parentSchemaPath, |
| String schemaName) throws SQLException { |
| super(parentSchemaPath, schemaName); |
| this.jdbcSchema = new JdbcSchema(plugin.getDataSource(schemaConfig.getUserName()), plugin.getDialect(), |
| plugin.getConvention(), null, schemaName); |
| } |
| |
| @Override |
| public Schema getSubSchema(String name) { |
| return schemaMap.get(name); |
| } |
| |
| @Override |
| public Set<String> getSubSchemaNames() { |
| return schemaMap.keySet(); |
| } |
| |
| @Override |
| public Table getTable(String name) { |
| return isDrillImpersonationEnabled |
| ? ugi.doAs((PrivilegedAction<Table>) () -> jdbcSchema.getTable(StringUtils.upperCase(name))) |
| : jdbcSchema.getTable(StringUtils.upperCase(name)); |
| } |
| |
| @Override |
| public Set<String> getTableNames() { |
| return isDrillImpersonationEnabled |
| ? ugi.doAs((PrivilegedAction<Set<String>>) jdbcSchema::getTableNames) |
| : jdbcSchema.getTableNames(); |
| } |
| |
| @Override |
| public String getTypeName() { |
| return PhoenixStoragePluginConfig.NAME; |
| } |
| |
| @Override |
| public boolean areTableNamesCaseSensitive() { |
| return false; |
| } |
| |
| @Override |
| public String getUser(String impersonated, String notImpersonated) { |
| return needToImpersonateReadingData() ? impersonated : notImpersonated; |
| } |
| |
| @Override |
| public boolean needToImpersonateReadingData() { |
| return isDrillImpersonationEnabled; |
| } |
| |
| public void addSchemas(Map<String, PhoenixSchema> schemas) { |
| schemaMap.putAll(schemas); |
| } |
| } |
| } |