问带有天桥的Quarkus反应性冬眠
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Stack Overflow用户

提问于 2021-02-18 13:02:14

回答 1查看 2.6K关注 0票数 7

当我尝试在& RESTEasy中使用Quarkus扩展时，我遇到了一个问题。启动应用程序时，会出现以下错误：

[io.qu.ru.Application] (Quarkus Main Thread) Failed to start application (with profile dev): java.lang.IllegalStateException: Booting an Hibernate Reactive serviceregistry on a non-reactive RecordedState!
    at io.quarkus.hibernate.reactive.runtime.boot.registry.PreconfiguredReactiveServiceRegistryBuilder.checkIsReactive(PreconfiguredReactiveServiceRegistryBuilder.java:76)
    at io.quarkus.hibernate.reactive.runtime.boot.registry.PreconfiguredReactiveServiceRegistryBuilder.<init>(PreconfiguredReactiveServiceRegistryBuilder.java:66)
    at io.quarkus.hibernate.reactive.runtime.FastBootHibernateReactivePersistenceProvider.rewireMetadataAndExtractServiceRegistry(FastBootHibernateReactivePersistenceProvider.java:177)
    at io.quarkus.hibernate.reactive.runtime.FastBootHibernateReactivePersistenceProvider.getEntityManagerFactoryBuilderOrNull(FastBootHibernateReactivePersistenceProvider.java:156)
    at io.quarkus.hibernate.reactive.runtime.FastBootHibernateReactivePersistenceProvider.createEntityManagerFactory(FastBootHibernateReactivePersistenceProvider.java:82)

以下是相关的Quarkus配置：

quarkus:
  datasource:
    db-kind: "postgresql"
    username: "sarah"
    password: "connor"
    jdbc:
      ~: true
      url: "jdbc:postgresql://localhost:5432/mybase"
    reactive:
      ~: true
      url: "postgresql://localhost:5432/mybase"

以及相关的依赖关系：

<dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-hibernate-reactive-panache</artifactId>
</dependency>
<dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-reactive-pg-client</artifactId>
</dependency>
<dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-flyway</artifactId>
</dependency>
<dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-jdbc-postgresql</artifactId>
</dependency>

使用~: false禁用JDBC配置可以避免异常，但是应用程序不会在启动时启动Flyway迁移。在这种情况下，我看到以下信息：

[io.qu.ag.de.AgroalProcessor] (build-39) The Agroal dependency is present but no JDBC datasources have been defined.

在某些Quarkus问题上，我发现不可能同时运行反应性数据库连接和阻塞数据库连接，但是是否有一种方法可以让Flyway使用反应性 Quarkus应用程序？

hibernate

flyway

quarkus

hibernate-reactive

java

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回答 1

Stack Overflow用户

回答已采纳

发布于 2021-03-07 06:16:04

目前，它们似乎并不同时支持阻塞JDBC和反应性sql客户端。解决方法是为Quarkus运行时禁用JDBC，并编写自己的包装器来执行Flyway迁移。

下面的解决方法是基于他们相应的GitHub问题。

在应用程序启动时运行的天桥包装器：

@ApplicationScoped
public class RunFlyway {

    @ConfigProperty(name = "myapp.flyway.migrate")
    boolean runMigration;

    @ConfigProperty(name = "quarkus.datasource.reactive.url")
    String datasourceUrl;
    @ConfigProperty(name = "quarkus.datasource.username")
    String datasourceUsername;
    @ConfigProperty(name = "quarkus.datasource.password")
    String datasourcePassword;

    public void runFlywayMigration(@Observes StartupEvent event) {
        if (runMigration) {
            Flyway flyway = Flyway.configure().dataSource("jdbc:" + datasourceUrl, datasourceUsername, datasourcePassword).load();
            flyway.migrate();
        }
    }
}

pom.xml：

<!-- DB -->
<dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-reactive-pg-client</artifactId>
</dependency>
<dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-hibernate-reactive</artifactId>
</dependency>

<!-- Flyway -->
<dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-flyway</artifactId>
</dependency>
<dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-jdbc-postgresql</artifactId>
</dependency>

application.yml：

myapp:
  flyway:
    migrate: true
quarkus:
  datasource:
    db-kind: postgresql
    username: myuser
    password: mypassword
    jdbc: false
    reactive:
      url: postgresql://localhost:5432/mydb