250 lines
6.6 KiB
Elixir
250 lines
6.6 KiB
Elixir
defmodule Farmbot.System.NervesHubClient do
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@moduledoc """
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Client that decides when an update should be done.
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"""
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use GenServer
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require Farmbot.Logger
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alias Farmbot.BotState.JobProgress
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@behaviour NervesHub.Client
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@behaviour Farmbot.System.NervesHub
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@current_version Farmbot.Project.version()
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@data_path Farmbot.OS.FileSystem.data_path()
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@data_path || Mix.raise("Please configure data_path in application env")
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import Farmbot.Config, only: [get_config_value: 3]
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def serial_number(:rpi0), do: serial_number("rpi")
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def serial_number(:rpi3), do: serial_number("rpi")
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def serial_number(plat) do
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:os.cmd(
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'/usr/bin/boardid -b uboot_env -u nerves_serial_number -b uboot_env -u serial_number -b #{
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plat
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}'
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)
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|> to_string()
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|> String.trim()
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end
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def uuid, do: Nerves.Runtime.KV.get_active("nerves_fw_uuid")
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def serial_number, do: serial_number(Farmbot.Project.target())
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def connect do
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Farmbot.Logger.debug(3, "Starting OTA Service")
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# NervesHub replaces it's own env on startup. Reset it.
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Application.put_env(:nerves_hub, NervesHub.Socket, reconnect_interval: 5000)
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supervisor = Farmbot.System.Supervisor
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# Stop Nerves Hub if it is running.
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_ = Supervisor.terminate_child(supervisor, NervesHub.Supervisor)
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_ = Supervisor.delete_child(supervisor, NervesHub.Supervisor)
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# Cause NervesRuntime.KV to restart.
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_ = GenServer.stop(Nerves.Runtime.KV)
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# Wait for a few seconds for good luck.
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Process.sleep(1000)
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# Start the connection again.
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{:ok, _pid} = Supervisor.start_child(supervisor, NervesHub.Supervisor)
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Logger.debug(3, "OTA Service started")
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:ok
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end
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def provision(serial) do
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Nerves.Runtime.KV.UBootEnv.put("nerves_serial_number", serial)
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Nerves.Runtime.KV.UBootEnv.put("nerves_fw_serial_number", serial)
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end
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def configure_certs(cert, key) do
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Nerves.Runtime.KV.UBootEnv.put("nerves_hub_cert", cert)
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Nerves.Runtime.KV.UBootEnv.put("nerves_hub_key", key)
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:ok
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end
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def deconfigure() do
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Nerves.Runtime.KV.UBootEnv.put("nerves_hub_cert", "")
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Nerves.Runtime.KV.UBootEnv.put("nerves_hub_key", "")
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Nerves.Runtime.KV.UBootEnv.put("nerves_serial_number", "")
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Nerves.Runtime.KV.UBootEnv.put("nerves_fw_serial_number", "")
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:ok
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end
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def config() do
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[
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Nerves.Runtime.KV.get("nerves_fw_serial_number"),
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Nerves.Runtime.KV.get("nerves_hub_cert"),
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Nerves.Runtime.KV.get("nerves_hub_key")
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]
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|> Enum.map(fn val ->
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if val == "", do: nil, else: val
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end)
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end
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def check_update do
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case GenServer.call(__MODULE__, :check_update) do
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# If updates were disabled, and an update is queued
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{:ignore, _url} ->
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Farmbot.Logger.info(1, "Applying OTA update")
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NervesHub.update()
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_ ->
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Farmbot.Logger.debug(1, "No update cached. Checking for tag changes.")
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case NervesHub.HTTPClient.update() do
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{:ok, %{"data" => %{"update_available" => false}}} ->
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do_backup_strats()
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_ ->
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Farmbot.Logger.info(1, "Applying OTA update")
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NervesHub.update()
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end
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end
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end
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defp do_backup_strats do
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case Farmbot.System.Updates.check_updates() do
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{version, url} ->
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Logger.busy(1, "Downloading fallback OTA")
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Farmbot.System.Updates.download_and_apply_update({version, url})
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:ok
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_ ->
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Logger.success(1, "Farmbot is up to date!")
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nil
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end
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end
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# Callback for NervesHub.Client
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def update_available(args) do
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GenServer.call(__MODULE__, {:update_available, args}, :infinity)
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end
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def handle_error(args) do
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Logger.error(1, "OTA failed to download: #{inspect(args)}")
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prog = %JobProgress.Percent{status: :error}
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if Process.whereis(Farmbot.BotState) do
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Farmbot.BotState.set_job_progress("FBOS_OTA", prog)
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end
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:ok
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end
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def handle_fwup_message({:ok, _, info}) do
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Logger.success(1, "OTA Complete Going down for reboot")
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prog = %JobProgress.Percent{percent: 100, status: :complete}
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if Process.whereis(Farmbot.BotState) do
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Farmbot.BotState.set_job_progress("FBOS_OTA", prog)
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end
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:ok
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end
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def handle_fwup_message({:progress, 100}) do
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Logger.success(1, "OTA Complete. Going down for reboot")
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prog = %JobProgress.Percent{percent: 100, status: :complete}
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if Process.whereis(Farmbot.BotState) do
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Farmbot.BotState.set_job_progress("FBOS_OTA", prog)
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end
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:ok
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end
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def handle_fwup_message({:progress, percent}) when rem(percent, 5) == 0 do
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prog = %JobProgress.Percent{percent: percent}
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if Process.whereis(Farmbot.BotState) do
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Farmbot.BotState.set_job_progress("FBOS_OTA", prog)
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end
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:ok
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end
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def handle_fwup_message({:error, _, reason}) do
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Farmbot.Logger.error(1, "OTA failed to apply: #{inspect(reason)}")
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prog = %JobProgress.Percent{status: :error}
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if Process.whereis(Farmbot.BotState) do
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Farmbot.BotState.set_job_progress("FBOS_OTA", prog)
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end
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:ok
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end
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def handle_fwup_message(_) do
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:ok
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end
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def start_link(_, _) do
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GenServer.start_link(__MODULE__, [], name: __MODULE__)
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end
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def init([]) do
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maybe_post_update()
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{:ok, nil}
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end
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def handle_call({:update_available, %{"firmware_url" => url}}, _, _state) do
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if Process.whereis(Farmbot.BotState) do
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Farmbot.BotState.set_update_available(true)
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end
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case Farmbot.Asset.fbos_config(:os_auto_update) do
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true ->
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Logger.success(1, "Applying OTA update")
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{:reply, :apply, {:apply, url}}
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false ->
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Logger.info(1, "New Farmbot OS is available!")
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{:reply, :ignore, {:ignore, url}}
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end
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end
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def handle_call(:check_update, _from, state) do
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{:reply, state, state}
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end
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defp maybe_post_update do
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case File.read(update_file()) do
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{:ok, @current_version} ->
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:ok
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{:ok, old_version} ->
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Logger.info(1, "Updating FarmbotOS from #{old_version} to #{@current_version}")
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do_post_update()
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{:error, :enoent} ->
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Logger.info(1, "Setting up FarmbotOS #{@current_version}")
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{:error, err} ->
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raise err
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end
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before_update()
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end
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defp do_post_update do
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alias Farmbot.Firmware.UartHandler.Update
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hw = get_config_value(:string, "settings", "firmware_hardware")
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is_beta? = Farmbot.Project.branch() in ["beta", "staging"]
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if is_beta? do
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Logger.debug(1, "Forcing beta image arduino firmware flash.")
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Update.force_update_firmware(hw)
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else
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Update.maybe_update_firmware(hw)
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end
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end
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defp before_update, do: File.write!(update_file(), @current_version)
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defp update_file, do: Path.join(@data_path, "update")
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end
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