Send message on pharo open/close?

I need for my application to register its main class somehow, that pharo
will send a message (class side) to it whenever image is started/finished,
for example, to reconfigure database connections as they get invalid when
image closes and opens again.

Is there any hook for pharo to be able to send a message to my class on
image open and close?

Thanks.

use #startUp: and #shutDown: on the class side of your class.


check implementors of those methods for examples.

David Carlos Manuelda wrote

I need for my application to register its main class somehow, that pharo
will send a message (class side) to it whenever image is started/finished,
for example, to reconfigure database connections as they get invalid when
image closes and opens again.

Is there any hook for pharo to be able to send a message to my class on
image open and close?

Thanks.