ryanandClaude
b6769abbe9
- Move Elixir code to server/ subdirectory for monorepo structure - Update flake.nix to provide packages and apps outputs for nix run support - Update nix/package.nix to accept src parameter instead of fetchgit - Add NixOS module export for easy consumption Now supports: nix run, nix build, and nix develop from git repo 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
69 lines
2.0 KiB
Elixir
69 lines
2.0 KiB
Elixir
defmodule Tortoise.Package.Suback do
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@moduledoc false
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@opcode 9
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alias Tortoise.Package
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@type qos :: 0 | 1 | 2
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@type ack_result :: {:ok, qos} | {:error, :access_denied}
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@opaque t :: %__MODULE__{
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__META__: Package.Meta.t(),
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identifier: Tortoise.package_identifier(),
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acks: [ack_result]
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}
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@enforce_keys [:identifier]
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defstruct __META__: %Package.Meta{opcode: @opcode, flags: 0},
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identifier: nil,
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acks: []
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@spec decode(binary()) :: t
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def decode(<<@opcode::4, 0::4, payload::binary>>) do
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with payload <- drop_length(payload),
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<<identifier::big-integer-size(16), acks::binary>> <- payload do
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case return_codes_to_list(acks) do
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[] ->
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{:error, {:protocol_violation, :empty_subscription_ack}}
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sub_acks ->
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%__MODULE__{identifier: identifier, acks: sub_acks}
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end
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end
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end
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defp drop_length(payload) do
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case payload do
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<<0::1, _::7, r::binary>> -> r
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<<1::1, _::7, 0::1, _::7, r::binary>> -> r
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<<1::1, _::7, 1::1, _::7, 0::1, _::7, r::binary>> -> r
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<<1::1, _::7, 1::1, _::7, 1::1, _::7, 0::1, _::7, r::binary>> -> r
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end
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end
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defp return_codes_to_list(<<>>), do: []
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defp return_codes_to_list(<<0x80::integer, acks::binary>>),
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do: [{:error, :access_denied}] ++ return_codes_to_list(acks)
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defp return_codes_to_list(<<ack::integer, acks::binary>>) when ack in 0x00..0x02,
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do: [{:ok, ack}] ++ return_codes_to_list(acks)
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# Protocols ----------------------------------------------------------
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defimpl Tortoise.Encodable do
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def encode(%Package.Suback{identifier: identifier} = t)
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when identifier in 0x0001..0xFFFF do
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[
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Package.Meta.encode(t.__META__),
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Package.variable_length_encode([
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<<identifier::big-integer-size(16)>>,
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Enum.map(t.acks, &encode_ack/1)
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])
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]
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end
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defp encode_ack({:ok, qos}) when qos in 0x00..0x02, do: qos
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defp encode_ack({:error, _}), do: 0x80
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end
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end
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