1 files changed, 62 insertions, 0 deletions
diff --git a/activejob/lib/active_job/arguments.rb b/activejob/lib/active_job/arguments.rb
new file mode 100644
index 0000000000..369e716912
--- /dev/null
+++ b/activejob/lib/active_job/arguments.rb
@@ -0,0 +1,62 @@
+module ActiveJob
+  class DeserializationError < StandardError
+    attr_reader :original_exception
+
+    def initialize(e)
+      super ("Error while trying to deserialize arguments: #{e.message}")
+      @original_exception = e
+      set_backtrace e.backtrace
+    end
+  end
+
+  module Arguments
+    extend self
+    TYPE_WHITELIST = [ NilClass, Fixnum, Float, String, TrueClass, FalseClass, Bignum ]
+
+    def serialize(arguments)
+      arguments.map { |argument| serialize_argument(argument) }
+    end
+
+    def deserialize(arguments)
+      arguments.map { |argument| deserialize_argument(argument) }
+    end
+
+    private
+      def serialize_argument(argument)
+        case argument
+        when GlobalID::Identification
+          argument.global_id.to_s
+        when *TYPE_WHITELIST
+          argument
+        when Array
+          serialize(argument)
+        when Hash
+          Hash[ argument.map { |key, value| [ serialize_hash_key(key), serialize_argument(value) ] } ]
+        else
+          raise "Unsupported argument type: #{argument.class.name}"
+        end
+      end
+
+      def deserialize_argument(argument)
+        case argument
+        when Array
+          deserialize(argument)
+        when Hash
+          Hash[ argument.map { |key, value| [ key, deserialize_argument(value) ] } ].with_indifferent_access
+        else
+          GlobalID::Locator.locate(argument) || argument
+        end
+      rescue => e
+        raise DeserializationError.new(e)
+      end
+
+      def serialize_hash_key(key)
+        case key
+        when String, Symbol
+          key.to_s
+        else
+          raise "Unsupported hash key type: #{key.class.name}"
+        end
+      end
+  end
+end