[boot-upgrade] [Spring-Security] Removed WebSecurityConfigurerAdapter

[BoykoAlex]

The WebSecurityConfigurerAdapter is deprecated in the last versions of Spring-Security 5.x used in Spring-Boot 2.7.x. As of Spring-Security 6.x and Spring-Boot 3.x the WebSecurityConfigurerAdapter is removed.

Migration guide for the Removed WebSecurityConfigurerAdapter

The migration guide splits migration in 5 cases (parts are completed in WebSecurityConfigurerAdapter recipe in rewrite-spring project:

• HttpSecurity (done)
• WebSecurity (done)
• Authentication
  • In-Memory (done)
  • LDAP
  • JDBC

Remaining cases are LDAP and JDBC authentication which seem challenging as methods bodies requires significant changes even going outside the scope of one method. Looks like only some migration cases are possible to cover with rewrite. It is challenging to write code that would reliably determine conditions when it is possible to perform automated migration.

[BoykoAlex]

Marker and quickfix added to IDE: 7c5dee4

[BoykoAlex]

Done for 4.18.0 release.
This is to be continued in future releases.
The overall plan is:

1. Modify the recipe to comment out methods that cannot be migrated and include the recipe into Boot 3 upgrade.
2. Handle LDAP and JDBC authentication config cases

[martinlippert]

So we can close this one and open new and separate issues for the work to be continued in the 4.18.1 cycle? (@BoykoAlex )

[BoykoAlex]

Remaining bits moved to #1001