Decouple OpenSAML dependencies from Liferay SAML extension points

• Type: Story
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: 7.0.X EE
• Fix Version/s: 7.0.X, 7.1.X, 7.2.X, Master
• Component/s: Application Security > SAML
• Labels:
  • liferay-saml-2.0-provider-3.1.0
• Branch Version/s:
  7.2.x, 7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Priority Level: Low
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal-ee/pull/18563

At present when developers want to extend SAML with custom implementations of AttributeResolver, UserResolver or NameIdResolver, then they will have direct dependency on the OpenSAML libraries.

This also means their module needs to be a fragment to avoid ClassCastExceptions at runtime caused by multiple classloaders.