Dispatch event when migration failed

[maMykola]

Feature Request

It would be useful to know if migration aborted due to some exception.

Q	A
New Feature	yes
RFC	yes/no
BC Break	no

Summary

There is a need to dispatch an event \Doctrine\Migrations\Events::onMigrationsAborted when exception happens during execution of migrations \Doctrine\Migrations\DbalMigrator::executeMigrations

[derrabus]

What would be the use-case of such an event?

[maMykola]

What would be the use-case of such an event?

I use ELK stack for logging and I want to know how frequently migrations were failed during deployment process and on which migration. So I need this type of event to create a listener.

[hvdklauw]

A usecase that I have and am trying to solve with this:

• onMigrationsMigrating -> aquire a lock, if it's locked throw an error that migrations are already running
• onMigrationsMigrated -> release the lock

This ensures only one instance of the migrations are running at the same time, except when an error occurs, then no migrations are run and you can't run them again till the lock is released.

Having a onMigrationsError event would help to catch that and also release the lock.