Class: McpAuthorization::Cache::Recorder

Inherits:
Object
  • Object
show all
Defined in:
lib/mcp_authorization/cache/recorder.rb

Overview

Wraps a server context during a cold compile and records every gating decision the compiler reads — so the cache key can be rebuilt later from just those decisions. Two contexts that answer every recorded predicate identically (same permissions, feature flags, tiers, defaults) produce the same key and share a cache entry; flip one feature flag and the vector — and the key — change.

Transparently delegates everything to the wrapped context. The compiler reaches the user via current_user, so that returns a RecorderUser to capture can? and default_for.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(target) ⇒ Recorder

Returns a new instance of Recorder.

Signature:

  • (untyped) -> void



44
45
46
47
48
 
# File 'lib/mcp_authorization/cache/recorder.rb', line 44

def initialize(target)
  @__target = target
  @consulted = []
  @__user = nil
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args, &block) ⇒ Object

Signature:

  • (Symbol, *untyped) -> untyped



64
65
66
67
68
69
70
71
72
73
74
 
# File 'lib/mcp_authorization/cache/recorder.rb', line 64

def method_missing(name, *args, &block)
  result = @__target.public_send(name, *args, &block)
  # Gating predicates are single-arg methods ending in "?"
  # (feature?/requires?/tier?/<custom>?). Recording an incidental
  # predicate is harmless — it just adds a deterministic dimension to
  # the key — so we don't need a hardcoded allowlist.
  if name.to_s.end_with?("?") && args.size == 1
    @consulted << Signature.new(:context, name.to_s, args.first)
  end
  result
end

Instance Attribute Details

#__target ⇒ Object (readonly)

Signature:

  • untyped



38
39
40
 
# File 'lib/mcp_authorization/cache/recorder.rb', line 38

def __target
  @__target
end

#consulted ⇒ Object (readonly)

Signature:

  • Array[Signature]



41
42
43
 
# File 'lib/mcp_authorization/cache/recorder.rb', line 41

def consulted
  @consulted
end

Instance Method Details

#current_user ⇒ Object

Signature:

  • () -> untyped



51
52
53
54
55
56
 
# File 'lib/mcp_authorization/cache/recorder.rb', line 51

def current_user
  user = @__target.current_user
  return nil unless user

  @__user ||= RecorderUser.new(user, @consulted)
end

#respond_to_missing?(name, include_private = false) ⇒ Boolean

Signature:

  • (Symbol, ?bool) -> bool

Returns:

  • (Boolean) 


59
60
61
 
# File 'lib/mcp_authorization/cache/recorder.rb', line 59

def respond_to_missing?(name, include_private = false)
  @__target.respond_to?(name, include_private)
end