使用gradle和flyway插件创建MySQL模式

Question

We are using gradle in our project to build a multi-repository project. Since it is automatically built and tested on a Jenkins build server, we need to set up and tear down the database.

My understanding of Continuous Integration best practices is that we should have a single push of a button to also set up and tear down the testing database. Even if this does not exist yet. So I want a gradle task that simply creates a database in MySQL if it does not exist yet.

Browsing the this fine site I thought I had found the answer when I was pointed to using the flyway plugin for Gradle. Apparently flyway does support automatic schema creation since version 2.1 ( http://java.dzone.com/announcements/flyway-21-released-automatic ), so it should be possible using the plugin, should it not?

However, if I run gradle flywayInit or gradle flywayClean , using a url like url = 'jdbc:mysql://127.0.0.1:3306/test' every time I get the message unknown database: test . So I tried the following:

buildscript {
    repositories {
        mavenCentral()
    }

    dependencies {
        classpath 'org.flywaydb:flyway-gradle-plugin:3.0'
    }
}

// Use Flyway plugin to create database
apply plugin: 'flyway'
flyway {
    user = 'root'
    password = 'root'
    url = 'jdbc:mysql://127.0.0.1:3306'
    schemas = ['test']
}

I would have expected another connection error. Instead the build was succesful, but no database schema was created. How can I create a schema using gradle and Flyway? If we can do it without Flyway that is fine, too.

UPDATE: It turns out this works just fine. I was looking at an outdated version of my list of database schemas. Apparently Sequel Pro is too stupid to update the list of schemas when you refresh. Or I am too stupid to find the right button in Sequel pro.

UPDATE 2: To make sure this always happens on every build, I added the following line to build.gradle:

// Add dependencies to tasks
build.dependsOn flywayInit

Answer 1

I followed Get started with Gradle and Flyway and everything ran ok.

I am using gradle 2.2 and the build.gradle file is:

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'mysql:mysql-connector-java:5.1.34'
        classpath 'org.flywaydb:flyway-gradle-plugin:3.1'
    }
}

apply plugin: 'flyway'
apply plugin: 'java'

flyway {
    url = 'jdbc:mysql://localhost:3306'
    user = 'root'
    password = 'root'
    schemas = ['demo1']
}

After that, run gradle flywayMigrate -i . If the database does not exist, will be created by flyway.

You can see a list of Flyway tasks here: link

Answer 2

There is a subtle, but important difference between what you have there and what Flyway can do: since version 2.1 Flyway can create schemas , but not databases .

The name in the MySQL url is a database you must create yourself using the MySQL command create database . Within that database, Flyway can create the schemas you specify with flyway.schemas .