Class: Ably::Rest::Middleware::Exceptions

Inherits:
Faraday::Response::Middleware
  • Object
show all
Defined in:
lib/ably/rest/middleware/exceptions.rb

Overview

HTTP exceptions raised by Ably due to an error status code Ably returns JSON/Msgpack error codes and messages so include this if possible in the exception messages

Constant Summary collapse

TOKEN_EXPIRED_CODE = 
40140..40149

Instance Method Summary collapse

Instance Method Details

#on_complete(env) ⇒ Object 



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# File 'lib/ably/rest/middleware/exceptions.rb', line 12

def on_complete(env)
  if env.status >= 400
    error_status_code = env.status
    error_code = nil

    if env.body.kind_of?(Hash)
      error = env.body.fetch('error', {})
      error_status_code = error['statusCode'].to_i if error['statusCode']
      error_code = error['code'].to_i if error['code']

      if error
        message = "#{error['message']} (status: #{error_status_code}, code: #{error_code})"
      else
        message = env.body
      end
    else
      message = env.body
    end

    message = 'Unknown server error' if message.to_s.strip == ''

    exception_args = [message, error_status_code, error_code]

    if env.status >= 500
      raise Ably::Exceptions::ServerError.new(*exception_args)
    elsif env.status == 401
      if TOKEN_EXPIRED_CODE.include?(error_code)
        raise Ably::Exceptions::TokenExpired.new(*exception_args)
      else
        raise Ably::Exceptions::UnauthorizedRequest.new(*exception_args)
      end
    elsif env.status == 403
      raise Ably::Exceptions::ForbiddenRequest.new(*exception_args)
    elsif env.status == 404
      raise Ably::Exceptions::ResourceMissing.new(*exception_args)
    else
      raise Ably::Exceptions::InvalidRequest.new(*exception_args)
    end
  end
end