Handle 401 errors from Diffbot.

Author: Scott Martin

lib/diffbot/api_client.rb

@@ -186,6 +186,10 @@ def request(method, path, data = {}, headers = {})
       response = connection.send(method.to_sym, path, data) do |request|
         request.headers.update(headers)
       end
+
+      code = response.env[:body][:errorCode]
+      raise(Diffbot::APIClient::Unauthorized.new(code)) if code == 401
+
       response.env
     rescue Faraday::Error::TimeoutError, Timeout::Error => error
       raise(Diffbot::APIClient::RequestTimeout.new(error))

lib/diffbot/api_client/error.rb

@@ -24,5 +24,8 @@ def initialize(exception = $ERROR_INFO)
     class RequestTimeout < Error
     end
 
+    # Raised when Diffbot returns errorCode 401.
+    class Unauthorized < Error
+    end
   end
 end