Class: Rack::AI::Middleware

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/ai/middleware.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app, **options) ⇒ Middleware 



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# File 'lib/rack/ai/middleware.rb', line 10

def initialize(app, **options)
  @app = app
  @config = build_config(options)
  @provider = build_provider
  @features = build_features
  @thread_pool = Concurrent::ThreadPoolExecutor.new(
    min_threads: 2,
    max_threads: 10,
    max_queue: 100
  )
  
  validate_configuration!
end

Instance Attribute Details

#app ⇒ Object (readonly)

Returns the value of attribute app.



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# File 'lib/rack/ai/middleware.rb', line 8

def app
  @app
end

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/rack/ai/middleware.rb', line 8

def config
  @config
end

#features ⇒ Object (readonly)

Returns the value of attribute features.



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# File 'lib/rack/ai/middleware.rb', line 8

def features
  @features
end

#provider ⇒ Object (readonly)

Returns the value of attribute provider.



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# File 'lib/rack/ai/middleware.rb', line 8

def provider
  @provider
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/rack/ai/middleware.rb', line 24

def call(env)
  # Initialize AI context in env
  env["rack.ai"] = {
    results: {},
    metadata: {},
    start_time: Time.now
  }

  # Process request through AI features
  blocked_response = process_request(env) if should_process_request?(env)
  
  # Return blocked response if request should be blocked
  return blocked_response if blocked_response

  # Call the next middleware/app
  status, headers, body = @app.call(env)

  # Process response through AI features
  process_response(env, status, headers, body) if should_process_response?(env)

  # Add AI headers if configured
  add_ai_headers(headers, env) if @config.explain_decisions

  [status, headers, body]
rescue => e
  handle_error(e, env)
  # Fail-safe: continue with original request if AI processing fails
  @config.fail_safe ? @app.call(env) : raise
ensure
  # Record metrics
  record_metrics(env) if @config.metrics_enabled
end