Propagate Authorities From Previous Factors #17790
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This commit adds a new default method to Authentication for the purposes of creating a Builder based on the current authentication, allowing other authentications to be applied to it as a composite. It also adds Builders for each one of the authentication result classes.
This commit allows looking up the current authentication and applying it to the latest authentication. This is specifically handy when collecting authorities gained from each authentication factor.
This commit provides the SecurityContextHolderStrategy bean to ProviderManager instances that the HttpSecurity DSL constructs.
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Applications can use
AuthenticationBuilderto apply existing authentications to new ones.For example, if the current logged in user is represented by:
And they provide a second set of authenticated credentials, represented by:
Then the first factor can be applied to the second factor as follows:
This draft PR adds a basic builder to each Authentication implementation that implements
Authentication.Builder. In order to simplify upgrades,toBuilderby default returns a no-op implementation ofAuthentication.Builderthat ultimately returns the same authentication unchanged.