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@woylie woylie released this 27 May 05:31
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3.0.0
d142e45
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Learn about vigilant mode.

Added

  • c:LetMe.Policy.fetch_expression/1
  • c:LetMe.Policy.fetch_expression!/1
  • c:LetMe.Policy.get_expression/1

Changed

  • The expressions, evaluation logic, and optimization logic introduced in
    LetMe 2.0.0 were extracted into a separate library called Spek. This version
    replaces the expression structs and logic with the new library.

How to upgrade

The DSL and callback functions are unchanged compared to version 2.0.0. Only
the representation of expressions under the expression key in the
LetMe.Rule and LetMe.UnauthorizedError structs was changed to use the
Spek structs.

  • LetMe.AllOf -> Spek.AllOf
  • LetMe.AnyOf -> Spek.AnyOf
  • LetMe.Check -> Spek.Check
  • LetMe.Literal -> Spek.Literal
  • LetMe.Not -> Spek.Not

The structs have mostly the same structure, except for these differences:

  • All structs: passed? -> satisfied?
  • Spek.Literal: additional result key
  • Spek.Check:
    • name -> fun
    • additional module key, which contains the name of the check module.
    • arg -> args
    • Because of the way Spek maps the evaluation context to function arguments,
      the args key holds a list in the format
      [{:ctx, :subject}, {:ctx, :object}, arg], where arg is the value that
      was previously under the arg key.
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