Debloat flyway core

[AB-xdev]

Which version and edition of Flyway are you using?

10.12.0 (OpenSource edition)

If this is not the latest version, can you reproduce the issue with the latest one as well? (Many bugs are fixed in newer releases and upgrading will often resolve the issue)

yes

Enviroment

Flyway-Mysql
Spring Boot 3

Description

While upgrading to 10.12.0 I noticed a lot of unused classes and dependencies are inside flyway core.

• Dependencies:
  • com.google.code.gson:gson: flyway-core depends on gson: fails if not present #3672 -> required for reporting which is not in use
  • com.fasterxml.jackson.dataformat:jackson-dataformat-toml -> Required for TomlUtils which is never used anywhere
• Classes and packages:
  • various telemetry classes that are not used
  • the complete reporting subsystem inside org.flywaydb.core.internal.reports, parts of org.flywaydb.core.api.output (e.g. DashboardRenderer) and the corresponding assets/report folder
  • org.flywaydb.core.internal.database.sqlite
  • org.flywaydb.core.internal.database.h2
  • org.flywaydb.core.internal.database.base.TestContainersDatabaseType
  • org.flywaydb.core.internal.authentication
  • a lot of classes inside org.flywaydb.core.internal.license e.g. EncryptionUtils
  • Many related classes inside org.flywaydb.core.internal.util e.g. LocalDateTimeSerializer
  • Many related exception classes e.g. org.flywaydb.core.internal.license.FlywayTrialExpiredException

I would recommend to remove these classes from the core library and move them to the correspoding existing libs or split them into new, dedicated libs.
This way the developers can declare/use them if required or at least exclude them in a easier way.