Openflow parser

lib/openflow/multipart/group/request.ex

@@ -0,0 +1,29 @@
+defmodule Openflow.Multipart.Group.Request do
+  defstruct(
+    version:      4,
+    xid:          0,
+    datapath_id:  nil, # virtual field
+    flags: [],
+    group_id:    :all
+  )
+
+  alias __MODULE__
+
+  def ofp_type, do: 18
+
+  def new(group_id \\ :all) do
+    %Request{group_id: group_id}
+  end
+
+  def read(<<group_id_int::32, _::size(4)-unit(8)>>) do
+    group_id = Openflow.Utils.get_enum(group_id_int, :group_id)
+    %Request{group_id: group_id}
+  end
+
+  def to_binary(%Request{group_id: group_id} = msg) do
+    group_id_int = Openflow.Utils.get_enum(group_id, :group_id)
+    body_bin = <<group_id_int::32, 0::size(4)-unit(8)>>
+    header_bin = Openflow.Multipart.Request.header(msg)
+    <<header_bin::bytes, body_bin::bytes>>
+  end
+end