This is a Grails port of the standard Spring Pet Clinic web application. It's very simple, consisting of a few domain classes for persistence and three controllers to support the user interface.

The application uses the Cloud Foundry Grails plugin to discover the database service bound to the application when pushed to Cloud Foundry, as described in the Cloud Foundry documentation.

This is the basic domain model for the Pet Clinic application:

           Person               Clinic
          /      \
      Owner      Vet
        |         |
       Pet    Speciality
      /   \
PetType  Visit

An Owner has many Pets, which in turn has many Visits and a PetType. A Vet has many Specialitys. Clinic is on its own, but has a controller dedicated to it.

To build and run this application, use the following command:

$ ./grailsw run-app

This will start the application in development mode and use an in-memory HSQLDB database.

Note: The first time the ./grailsw command is run, it will take a while to download the Grails framework. Subsequent Grails commands will run much faster.

To run the application on Cloud Foundry, first build the project into a .war file:

$ ./grailsw prod war

After installing the 'cf' command-line interface for Cloud Foundry, targeting a Cloud Foundry instance, and logging in, the application can be pushed using these commands:

$ cf push

When using the provided manifest.yml file, a MySQL service will be created and bound to the app when it is pushed. You can choose a different MySQL service or a PostgreSQL service to bind to the application.