Spring-boot：在不启动应用程序的情况下运行flyway迁移

Question

我们有一个 Spring Boot 服务，可以进行 Flyway 迁移，并且一切正常。现在，对于新的部署用例，问题是是否有一个 java 选项（参数或类似的东西）来仅启动 Flyway 迁移而不启动实际服务。

Answer 1

这对我来说很有用；import static org.springframework.boot.WebApplicationType.NONE;import org.springframework.boot.SpringApplication;import org.springframework.boot.SpringBootConfiguration;import org.springframework.boot.autoconfigure.flyway.FlywayAutoConfiguration;import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;import org.springframework.boot.builder.SpringApplicationBuilder;import org.springframework.context.annotation.Import;/** * Utility to run flyway migration without starting service */@SpringBootConfiguration@Import({DataSourceAutoConfiguration.class, FlywayAutoConfiguration.class})public class FlywayMigrationRunner {public static void main(String[] args) {SpringApplication application =    new SpringApplicationBuilder(FlywayMigrationRunner.class)        .web(NONE).build();    application.run(args);  }}中等链接

Answer 2

基本上，我自己通过利用 Flyway 回调来实现它，并在迁移成功完成后简单地关闭应用程序。整个过程由一个单独的配置参数控制。这是回调public class PostMigrationCallback implements Callback {  private final FlywayCustomProperties flywayCustomProperties;  private final ApplicationContext applicationContext;  public PostMigrationCallback(FlywayCustomProperties flywayCustomProperties, ApplicationContext applicationContext) {    this.flywayCustomProperties = flywayCustomProperties;    this.applicationContext = applicationContext;  }  @Override  public boolean supports(Event event, Context context) {    if (event.getId().equalsIgnoreCase("afterMigrate") && flywayCustomProperties.isMigrationOnly()) {      log.info("Service is going to shutdown as configuration was set to spring.flyway.migrate-only=true and schema was migrated successfully");      int exitCode = SpringApplication.exit(applicationContext, () -> 0);      System.exit(exitCode);    }    return false;  }  @Override  public boolean canHandleInTransaction(Event event, Context context) {    return false;  }  @Override  public void handle(Event event, Context context) {  }}这里我们有配置参数@Data@Validated@ConfigurationProperties(prefix = "spring.flyway")public class FlywayCustomProperties {  @NotNull  private boolean migrationOnly;}

Answer 3

是的，您可以使用 Flyway cli 来运行迁移，而无需启动服务： https ://flywaydb.org/documentation/commandline/