Class: Otto::RouteHandlers::LambdaHandler

Inherits:
BaseHandler
  • Object
show all
Defined in:
lib/otto/route_handlers/lambda.rb

Overview

Custom handler for lambda/proc definitions (future extension)

Instance Attribute Summary

Attributes inherited from BaseHandler

#otto_instance, #route_definition

Instance Method Summary collapse

Methods inherited from BaseHandler

#initialize

Constructor Details

This class inherits a constructor from Otto::RouteHandlers::BaseHandler

Instance Method Details

#call(env, extra_params = {}) ⇒ Object 



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# File 'lib/otto/route_handlers/lambda.rb', line 12

def call(env, extra_params = {})
  start_time = Otto::Utils.now_in_μs
  req = otto_instance ? otto_instance.request_class.new(env) : Otto::Request.new(env)
  res = otto_instance ? otto_instance.response_class.new : Otto::Response.new

  begin
    # Security: Lambda handlers require pre-configured procs from Otto instance
    # This prevents code injection via eval and maintains security
    handler_name    = route_definition.klass_name
    lambda_registry = otto_instance&.config&.dig(:lambda_handlers) || {}

    lambda_proc = lambda_registry[handler_name]
    unless lambda_proc.respond_to?(:call)
      raise ArgumentError, "Lambda handler '#{handler_name}' not found in registry or not callable"
    end

    result = lambda_proc.call(req, res, extra_params)

    handle_response(result, res, {
                      lambda: lambda_proc,
      request: req,
                    })
  rescue StandardError => e
    # Store handler context in env for centralized error handler
    handler_name = "Lambda[#{route_definition.klass_name}]"
    env['otto.handler'] = handler_name
    env['otto.handler_duration'] = Otto::Utils.now_in_μs - start_time

    raise e # Re-raise to let Otto's centralized error handler manage the response
  end

  res.finish
end