module Aws::Errors::DynamicErrors

def self.extended(submodule)
  submodule.instance_variable_set("@const_set_mutex", Mutex.new)
end

def const_missing(constant)
  set_error_constant(constant)
end

def error_class(error_code)
  constant = error_code.to_s
  constant = constant.gsub(/http:\/\/.*$/, '') # remove http namespaces
  constant = constant.gsub(/[^a-zA-Z0-9]/, '').to_sym
  if error_const_set?(constant)
    const_get(constant)
  else
    set_error_constant(constant)
  end
end

def error_const_set?(constant)
  # Purposefully not using #const_defined? as that method returns true
  # for constants not defined directly in the current module.
  constants.include?(constant.to_sym)
end

def set_error_constant(constant)
  @const_set_mutex.synchronize do
    # Ensure the const was not defined while blocked by the mutex
    if error_const_set?(constant)
      const_get(constant)
    else
      const_set(constant , Class.new(ServiceError))
    end
  end
end