How to determine/check if primary database is down and switch to secondary database

[Vusumzi Mtimkulu]

My app currently connects to default/primary database defined in the yaml file. This works great. The challenge I'm having is determining or checking if this database is is down, so that I can create manual DatabaseConfig object and and connect to the secondary database.  Seems simple enough, think I'm doing something wrong. 

I posted on Stackoverflow: ebean check if primary database connection is down

However if the database offline it doesn't seem to throw exceptions I can catch. The try-catch clauses are not cathing the DataSourceInitialiseException, Exception at all

 Log:

10:28:30.460 [main] ERROR i.e.datasource.pool.ConnectionPool - FATAL: DataSourcePool [db] is down or has network error!!! 10:28:30.473 [main] ERROR io.ebean.Ebean - Error trying to create the default Database io.ebean.datasource.DataSourceInitialiseException: Error initialising DataSource: IO Error: The Network Adapter could not establish the connection at..

[Rob Bygrave]

Maybe catch Throwable ?