/* * Copyright 2019 the original author or authors. * * Licensed 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 * * https://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.springframework.cloud.dataflow.server.db.migration; import java.util.ArrayList; import java.util.List; import org.flywaydb.core.api.callback.Context; import org.flywaydb.core.api.callback.Event; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.cloud.dataflow.common.flyway.AbstractCallback; import org.springframework.cloud.dataflow.common.flyway.SqlCommand; import org.springframework.jdbc.core.JdbcTemplate; import org.springframework.jdbc.datasource.SingleConnectionDataSource; /** * Base implementation for baselining schema setup. * * @author Janne Valkealahti * */ public abstract class AbstractBaselineCallback extends AbstractCallback { private static final Logger logger = LoggerFactory.getLogger(AbstractBaselineCallback.class); private final AbstractInitialSetupMigration initialSetupMigration; /** * Instantiates a new abstract baseline callback. * * @param initialSetupMigration the initial setup migration */ public AbstractBaselineCallback(AbstractInitialSetupMigration initialSetupMigration) { super(Event.BEFORE_BASELINE); this.initialSetupMigration = initialSetupMigration; } @Override public List<SqlCommand> getCommands(Event event, Context context) { List<SqlCommand> commands = new ArrayList<>(); List<SqlCommand> defaultCommands = super.getCommands(event, context); if (defaultCommands != null) { commands.addAll(defaultCommands); } boolean migrateToInitial = true; try { JdbcTemplate jdbcTemplate = new JdbcTemplate(new SingleConnectionDataSource(context.getConnection(), true)); jdbcTemplate.execute("select 1 from APP_REGISTRATION"); migrateToInitial = false; } catch (Exception e) { } if (migrateToInitial) { logger.info("Did not detect prior Data Flow schema, doing baseline."); commands.addAll(initialSetupMigration.getCommands()); } else { logger.info("Detected old Data Flow schema, doing baseline."); commands.addAll(dropIndexes()); commands.addAll(changeAppRegistrationTable()); commands.addAll(changeUriRegistryTable()); commands.addAll(changeStreamDefinitionsTable()); commands.addAll(changeTaskDefinitionsTable()); commands.addAll(changeAuditRecordsTable()); commands.addAll(createTaskLockTable()); commands.addAll(createTaskDeploymentTable()); commands.addAll(createIndexes()); } return commands; } /** * Drop indexes. * * @return the list of sql commands */ public abstract List<SqlCommand> dropIndexes(); /** * Change app registration table. * * @return the list of sql commands */ public abstract List<SqlCommand> changeAppRegistrationTable(); /** * Change uri registry table. * * @return the list of sql commands */ public abstract List<SqlCommand> changeUriRegistryTable(); /** * Change stream definitions table. * * @return the list of sql commands */ public abstract List<SqlCommand> changeStreamDefinitionsTable(); /** * Change task definitions table. * * @return the list of sql commands */ public abstract List<SqlCommand> changeTaskDefinitionsTable(); /** * Change audit records table. * * @return the list of sql commands */ public abstract List<SqlCommand> changeAuditRecordsTable(); /** * Creates the indexes. * * @return the list of sql commands */ public abstract List<SqlCommand> createIndexes(); /** * Creates the task lock table. * * @return the list of sql commands */ public abstract List<SqlCommand> createTaskLockTable(); /** * Create the task deployment table. * * @return the list of sql commands */ public abstract List<SqlCommand> createTaskDeploymentTable(); }