54 lines
1.3 KiB
Elixir
54 lines
1.3 KiB
Elixir
defmodule Openflow.Multipart.GroupDesc.Reply do
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defstruct(
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version: 4,
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xid: 0,
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datapath_id: nil, # virtual field
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flags: [],
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groups: []
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)
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alias __MODULE__
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def ofp_type, do: 18
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def new(groups \\ []) do
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%Reply{groups: groups}
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end
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def read(<<groups_bin::bytes>>) do
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groups = Openflow.Multipart.GroupDescStats.read(groups_bin)
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%Reply{groups: groups}
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end
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end
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defmodule Openflow.Multipart.GroupDescStats do
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defstruct(
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type: :all,
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group_id: 0,
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buckets: []
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)
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alias __MODULE__
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@ofp_group_desc_size 8
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def read(binary) do
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do_read([], binary)
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end
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# private functions
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defp do_read(acc, ""), do: Enum.reverse(acc)
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defp do_read(acc, <<length::16, _tail::bytes>> = binary) do
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<<group_stats_bin::size(length)-bytes, rest::bytes>> = binary
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do_read([codec(group_stats_bin)|acc], rest)
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end
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defp codec(<<length::16, type_int::8, _::8, group_id::32, tail::bytes>>) do
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buckets_bin_len = length - @ofp_group_desc_size
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<<buckets_bin::size(buckets_bin_len)-bytes, _::bytes>> = tail
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type = Openflow.Enums.to_atom(type_int, :group_type)
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buckets = Openflow.Bucket.read(buckets_bin)
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%GroupDescStats{type: type, group_id: group_id, buckets: buckets}
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end
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end
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