如何在sprintboot stratup上为反应性r2dbc驱动程序运行flyway迁移 [英] How to run flyway migration for reactive r2dbc driver on sprintboot stratup
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问题描述
我正在使用非阻塞数据库驱动程序 r2dbc
I am working on springboot webflux project with non-blocking database driver r2dbc,
但是当Springboot应用程序启动时，Flyway不会运行迁移. 以下是我的春季靴 pom.xml
But when Springboot application start Flyway does not run migrations. Below are my spring-boot pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>r2dbmigration</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>r2dbmigration</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot.experimental</groupId>
<artifactId>spring-boot-starter-data-r2dbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
<dependency>
<groupId>org.flywaydb</groupId>
<artifactId>flyway-core</artifactId>
</dependency>
<dependency>
<groupId>io.r2dbc</groupId>
<artifactId>r2dbc-postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot.experimental</groupId>
<artifactId>spring-boot-test-autoconfigure-r2dbc</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>io.projectreactor</groupId>
<artifactId>reactor-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot.experimental</groupId>
<artifactId>spring-boot-bom-r2dbc</artifactId>
<version>0.1.0.M3</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
</repository>
</repositories>
</project>
我的迁移文件是: V1.1__create_file_import_table.sql 内容为
My migration file is : V1.1__create_file_import_table.sql with content of
DROP TABLE IF EXISTS file_import;
CREATE TABLE file_import
(
id BIGINT GENERATED ALWAYS AS IDENTITY,
file_key CHARACTER VARYING(255) NOT NULL,
created_at TIMESTAMP without time zone NOT NULL,
created_by BIGINT NOT NULL,
PRIMARY KEY (id)
);
application.properties
spring.r2dbc.url= r2dbc:postgresql://localhost:5432/import
spring.r2dbc.username=postgres
spring.r2dbc.password=password
我的应用程序启动平稳，但是没有迁移运行.
My application starts smoothly but there is no migration run.
有人可以帮我吗?
Github URL
谢谢
推荐答案
以下Java实现基于@Sim的Kotlin示例.
The following Java implementation is based on @Sim's Kotlin example.
示例pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.0.RC1</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>flyway</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>flyway</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-r2dbc</artifactId>
</dependency>
<dependency>
<groupId>dev.miku</groupId>
<artifactId>r2dbc-mysql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.flywaydb</groupId>
<artifactId>flyway-core</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>io.projectreactor</groupId>
<artifactId>reactor-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
</pluginRepository>
</pluginRepositories>
</project>
示例application.yml
---
spring:
r2dbc:
url: r2dbc:pool:mysql://localhost:3306/defaultdb
username: <user>
password: <pass>
flyway:
url: jdbc:mysql://localhost:3306/defaultdb
user: ${spring.r2dbc.username}
password: ${spring.r2dbc.password}
baseline-on-migrate: true
添加以下Spring Boot配置-FlywayConfig.java
Add the following Spring Boot configuration - FlywayConfig.java
package com.example.flyway;
import org.flywaydb.core.Flyway;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
// https://stackoverflow.com/a/61412233
@Configuration
public class FlywayConfig {
private final Environment env;
public FlywayConfig(final Environment env) {
this.env = env;
}
@Bean(initMethod = "migrate")
public Flyway flyway() {
return new Flyway(Flyway.configure()
.baselineOnMigrate(true)
.dataSource(
env.getRequiredProperty("spring.flyway.url"),
env.getRequiredProperty("spring.flyway.user"),
env.getRequiredProperty("spring.flyway.password"))
);
}
}
首次执行:
: Bootstrapping Spring Data R2DBC repositories in DEFAULT mode.
: Finished Spring Data repository scanning in 7ms. Found 0 R2DBC repository interfaces.
: Flyway Community Edition 6.4.1 by Redgate
: Database: jdbc:mysql://localhost:3306/defaultdb (MySQL 5.5)
: Successfully validated 1 migration (execution time 00:00.006s)
: Creating Schema History table `defaultdb`.`flyway_schema_history` ...
: DB: Name 'flyway_schema_history_pk' ignored for PRIMARY key. (SQL State: 42000 - Error Code: 1280)
: Current version of schema `defaultdb`: << Empty Schema >>
: Migrating schema `defaultdb` to version 1.0.001 - Initialise database tables
: Successfully applied 1 migration to schema `default` (execution time 00:00.036s)
: Netty started on port(s): 8080
:Started Application in 1.829 seconds (JVM running for 2.343)
第二次执行:
: No active profile set, falling back to default profiles: default
: Bootstrapping Spring Data R2DBC repositories in DEFAULT mode.
: Finished Spring Data repository scanning in 11ms. Found 0 R2DBC repository interfaces.
: Flyway Community Edition 6.4.1 by Redgate
: Database: jdbc:mysql://localhost:3306/defaultdb (MySQL 5.5)
: Successfully validated 1 migration (execution time 00:00.009s)
: Current version of schema `defaultdb`: 1.0.001
: Schema `defaultdb` is up to date. No migration necessary.
: Netty started on port(s): 8080
: Started Application in 1.273 seconds (JVM running for 1.695)
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