Grails external configuration (datasource) with multiple environments

Question

In my Config.groovy i put line:

grails.config.locations = [ "classpath:app-config.properties"]

where I set definition for datasource. File looks like:

dataSource.url=jdbc:mysql://host/instance
dataSource.username=u
dataSource.password=p

and it properly replace properties from DataSource.groovy.

Problem is that it replace configuration for every environment, but i need separate config for dev, test and production. Trying to put into file different entries like:

environments.development.dataSource.url=jdbc:mysql://host/dev
...
environments.production.dataSource.url=jdbc:mysql://host/prod
...

ends with default data sources properties defined in DataSource.groovy. How to make one property file to work with different environments?

Answer 1

There are several possible approaches. Here are a couple:

1. Embed the current environment name in your external config file name:

   grails.config.locations = [ "classpath:app-${grails.util.Environment.current.name}-config.properties"]

   This will cause app-development-config.properties to be loaded in dev mode, app-test-config.properties in test, etc.

2. Use the .groovy config format instead of .properties. With a .groovy config file, you can use the environment { ... } block.