Question

根据flyway的mysql数据库默认配置，flyway使用INNODB作为默认存储引擎来创建“schema_version表”。无论如何我可以将默认存储引擎设置为MyISAM ??我试图打开flyway的jar并从代码库进行更改。我还找到了创建schema_version表的.sql文件。但是在更改了该文件并再次打包后，我无法运行飞路。有任何配置更改???从哪里我可以改变它作为参数。我正在使用flyway 4.0.3的社区版本

Answer 1

我建议尽可能避免修改Flyway来源。

您可以在Flyway创建后简单地更改表引擎吗？如果这不可能，那么在使用Flyway之前，您可以自己创建schema_version表，从而有效地伪造基线。

Answer 2

我有完全相同的问题。我的客户禁用了InnoDB引擎。 Flyway不允许您自定义引擎。它是硬编码的：

Code on GitHub

所以我必须自己执行这一步。这不是那么多工作：

private static void baselineWithDefaultStorageEngine(Flyway flyway) {
    try (Connection con = flyway.getDataSource().getConnection()) {
        if (!versionTableExisting(con, flyway)) {
            createVersionTable(con);
            setBaseline(con);
        }
    } catch (SQLException e) {
        throw new RuntimeException("Konnte Flyway Baseline für " + flyway.getDataSource() + " nicht erstellen.", e);
    }
}

private static void createVersionTable(Connection con) throws SQLException {
    try(PreparedStatement stmt = con.prepareStatement("CREATE TABLE flyway_schema_history ( " + 
         "`installed_rank` INT NOT NULL, " + 
         "`version` VARCHAR(50), " + 
         "`description` VARCHAR(200) NOT NULL, " +
         "`type` VARCHAR(20) NOT NULL, " +
         "`script` VARCHAR(1000) NOT NULL, " +
         "`checksum` INT, " +
         "`installed_by` VARCHAR(100) NOT NULL, " +
         "`installed_on` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, " +
         "`execution_time` INT NOT NULL, " +
         "`success` BOOL NOT NULL, " +
         "CONSTRAINT `flyway_schema_history_pk` PRIMARY KEY (`installed_rank`), " +
         "INDEX `flyway_schema_history_s_idx` (`success`) " +
         ");")) {           
        stmt.execute();
    }

}

private static void setBaseline(Connection con) throws SQLException {
    try (PreparedStatement stmt = con.prepareStatement("INSERT INTO `flyway_schema_history` " + 
    "(`installed_rank`, `version`, `description`, `type`, `script`, `installed_by`, `execution_time`, `success`) VALUES " + 
    "(?, ?, ?, ?, ?, ?, ?, ?)")) {
        stmt.setInt(1, 1);
        stmt.setInt(2, 1);
        stmt.setString(3, "<< Flyway Baseline >>");
        stmt.setString(4, "BASELINE");
        stmt.setString(5, "<< Flyway Baseline >>");
        stmt.setString(6, "root");
        stmt.setInt(7, 0);
        stmt.setInt(8, 1);
        stmt.execute();
    }

}

private static boolean versionTableExisting(Connection con, Flyway flyway) throws SQLException {
    try (PreparedStatement stmt = con.prepareStatement("show tables like 'flyway_schema_history'")) {
        try (ResultSet resultSet = stmt.executeQuery()) {
            return resultSet.next();
        }
    }
}

如何更改flyway的默认存储引擎

2 个答案: