| /** |
| * 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.hadoop.ozone.recon.codegen; |
| |
| import java.io.File; |
| import java.sql.SQLException; |
| import java.util.Set; |
| |
| import javax.sql.DataSource; |
| |
| import org.apache.commons.io.FileUtils; |
| import org.hadoop.ozone.recon.schema.ReconSchemaDefinition; |
| import org.jooq.codegen.GenerationTool; |
| import org.jooq.meta.jaxb.Configuration; |
| import org.jooq.meta.jaxb.Database; |
| import org.jooq.meta.jaxb.Generate; |
| import org.jooq.meta.jaxb.Generator; |
| import org.jooq.meta.jaxb.Jdbc; |
| import org.jooq.meta.jaxb.Strategy; |
| import org.jooq.meta.jaxb.Target; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.sqlite.SQLiteDataSource; |
| |
| import com.google.inject.AbstractModule; |
| import com.google.inject.Guice; |
| import com.google.inject.Inject; |
| import com.google.inject.Injector; |
| import com.google.inject.Provider; |
| |
| /** |
| * Utility class that generates the Dao and Pojos for Recon schema. The |
| * implementations of {@link ReconSchemaDefinition} are discovered through |
| * Guice bindings in order to avoid ugly reflection code, and invoked to |
| * generate the schema over an embedded database. The jooq code generator then |
| * runs over the embedded database to generate classes for recon. |
| */ |
| public class JooqCodeGenerator { |
| |
| private static final Logger LOG = |
| LoggerFactory.getLogger(JooqCodeGenerator.class); |
| |
| private static final String SQLITE_DB = |
| System.getProperty("java.io.tmpdir") + "/recon-generated-schema"; |
| private static final String JDBC_URL = "jdbc:sqlite:" + SQLITE_DB; |
| |
| private final Set<ReconSchemaDefinition> allDefinitions; |
| |
| @Inject |
| public JooqCodeGenerator(Set<ReconSchemaDefinition> allDefinitions) { |
| this.allDefinitions = allDefinitions; |
| } |
| |
| /** |
| * Create schema. |
| */ |
| private void initializeSchema() throws SQLException { |
| for (ReconSchemaDefinition definition : allDefinitions) { |
| definition.initializeSchema(); |
| } |
| } |
| |
| /** |
| * Generate entity and DAO classes. |
| */ |
| private void generateSourceCode(String outputDir) throws Exception { |
| Configuration configuration = |
| new Configuration() |
| .withJdbc(new Jdbc() |
| .withDriver("org.sqlite.JDBC") |
| .withUrl(JDBC_URL) |
| .withUser("sa") |
| .withPassword("sa")) |
| .withGenerator(new Generator() |
| .withDatabase(new Database() |
| .withName("org.jooq.meta.sqlite.SQLiteDatabase") |
| .withOutputSchemaToDefault(true) |
| .withIncludeTables(true) |
| .withIncludePrimaryKeys(true)) |
| .withGenerate(new Generate() |
| .withDaos(true) |
| .withEmptyCatalogs(true) |
| .withEmptySchemas(true)) |
| .withStrategy(new Strategy().withName( |
| "org.hadoop.ozone.recon.codegen.TableNamingStrategy")) |
| .withTarget(new Target() |
| .withPackageName("org.hadoop.ozone.recon.schema") |
| .withClean(true) |
| .withDirectory(outputDir))); |
| GenerationTool.generate(configuration); |
| } |
| |
| /** |
| * Provider for embedded datasource. |
| */ |
| static class LocalDataSourceProvider implements Provider<DataSource> { |
| private static SQLiteDataSource db; |
| |
| static { |
| db = new SQLiteDataSource(); |
| db.setUrl(JDBC_URL); |
| } |
| |
| @Override |
| public DataSource get() { |
| return db; |
| } |
| |
| static void cleanup() { |
| FileUtils.deleteQuietly(new File(SQLITE_DB)); |
| } |
| } |
| |
| public static void main(String[] args) { |
| if (args.length < 1) { |
| throw new IllegalArgumentException("Missing required arguments: " + |
| "Need a ouput directory for generated code.\nUsage: " + |
| "org.apache.hadoop.ozone.recon.persistence.JooqCodeGenerator " + |
| "<outputDirectory>."); |
| } |
| |
| String outputDir = args[0]; |
| Injector injector = Guice.createInjector( |
| new ReconSchemaGenerationModule(), |
| new AbstractModule() { |
| @Override |
| protected void configure() { |
| bind(DataSource.class).toProvider(new LocalDataSourceProvider()); |
| bind(JooqCodeGenerator.class); |
| } |
| }); |
| |
| JooqCodeGenerator codeGenerator = |
| injector.getInstance(JooqCodeGenerator.class); |
| |
| // Create tables |
| try { |
| codeGenerator.initializeSchema(); |
| } catch (SQLException e) { |
| LOG.error("Unable to initialize schema.", e); |
| throw new ExceptionInInitializerError(e); |
| } |
| |
| // Generate Pojos and Daos |
| try { |
| codeGenerator.generateSourceCode(outputDir); |
| } catch (Exception e) { |
| LOG.error("Code generation failed. Aborting build.", e); |
| throw new ExceptionInInitializerError(e); |
| } |
| |
| // Cleanup after |
| LocalDataSourceProvider.cleanup(); |
| } |
| } |