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get Teltonika router serial number and mac address (#540)
* get basic info from RUT routers * report router metadata * fix get router state * get default gateway * add rut process to application * upgrade deps
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,15 @@ | ||
| defmodule ExNVR.Nerves.Health.Metadata do | ||
| @moduledoc false | ||
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| alias ExNVR.Nerves.Monitoring.RUT | ||
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| @spec router_serial_number() :: String.t() | nil | ||
| def router_serial_number(), do: router_state()[:serial_number] | ||
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| @spec router_mac_address() :: String.t() | nil | ||
| def router_mac_address(), do: router_state()[:mac_address] | ||
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| defp router_state() do | ||
| if Process.whereis(RUT), do: RUT.state(), else: %{} | ||
| end | ||
| end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,119 @@ | ||
| defmodule ExNVR.Nerves.Monitoring.RUT do | ||
| @moduledoc """ | ||
| Get basic data from Teltonika routers. | ||
| The communication is done via MODBUS. | ||
| The following router's models are supported: | ||
| * RUT23x | ||
| * RUT24x | ||
| * RUT95x | ||
| * RUTX11 | ||
| """ | ||
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| use GenServer | ||
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| import Bitwise | ||
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| alias Modbux.Tcp.Client | ||
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| @connect_interval :timer.seconds(30) | ||
| @request_interval :timer.minutes(1) | ||
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| @requests %{ | ||
| serial_number: {:rhr, 0x1, 39, 16}, | ||
| mac_address: {:rhr, 0x1, 55, 16}, | ||
| name: {:rhr, 0x1, 71, 16} | ||
| } | ||
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| def start_link(registry) do | ||
| GenServer.start_link(__MODULE__, [registry: registry], name: __MODULE__) | ||
| end | ||
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| @spec state() :: map() | ||
| def state() do | ||
| GenServer.call(__MODULE__, :state) | ||
| end | ||
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| @impl true | ||
| def init(opts) do | ||
| {:ok, modbus_pid} = Client.start_link(active: false, timeout: :timer.seconds(5)) | ||
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| state = %{ | ||
| modbus_pid: modbus_pid, | ||
| registry: opts[:registry], | ||
| data: Map.new(@requests, fn {key, _value} -> {key, nil} end) | ||
| } | ||
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| Process.send_after(self(), :connect, 0) | ||
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| {:ok, state} | ||
| end | ||
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| @impl true | ||
| def handle_call(:state, _from, state) do | ||
| {:reply, state.data, state} | ||
| end | ||
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| @impl true | ||
| def handle_info(:connect, state) do | ||
| with {:ok, gateway} <- get_default_gateway(), | ||
| :ok <- Client.configure(state.modbus_pid, ip: gateway), | ||
| :ok <- Client.connect(state.modbus_pid) do | ||
| Process.send_after(self(), :send_requests, 0) | ||
| else | ||
| _error -> Process.send_after(self(), :connect, @connect_interval) | ||
| end | ||
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| {:noreply, state} | ||
| end | ||
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| @impl true | ||
| def handle_info(:send_requests, state) do | ||
| data = | ||
| Map.new(@requests, fn {name, req} -> | ||
| :ok = Client.request(state.modbus_pid, req) | ||
| {:ok, values} = Client.confirmation(state.modbus_pid) | ||
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| {name, map_values(name, values)} | ||
| end) | ||
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| send(state.registry, {:router, data}) | ||
| Process.send_after(self(), :send_requests, @request_interval) | ||
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| {:noreply, %{state | data: data}} | ||
| end | ||
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| @impl true | ||
| def handle_info(_message, state) do | ||
| {:noreply, state} | ||
| end | ||
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| defp get_default_gateway() do | ||
| case System.cmd("ip", ["route"], stderr_to_stdout: true) do | ||
| {output, 0} -> | ||
| String.split(output, "\n") | ||
| |> Enum.find("", &String.starts_with?(&1, "default")) | ||
| |> String.split(" ") | ||
| |> case do | ||
| ["default", "via", gateway | _rest] -> :inet.parse_address(to_charlist(gateway)) | ||
| _other -> {:error, :no_gateway} | ||
| end | ||
|
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| {error, _exit_status} -> | ||
| {:error, error} | ||
| end | ||
| end | ||
|
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| defp map_values(:mac_address, values) do | ||
| Enum.take(values, 6) | ||
| |> Enum.map(&[&1 >>> 8, &1 &&& 0xFF]) | ||
| |> List.to_string() | ||
| end | ||
|
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| defp map_values(_field, values) do | ||
| Enum.reject(values, &(&1 == 0)) | ||
| |> Enum.map(&[&1 >>> 8, &1 &&& 0xFF]) | ||
| |> List.to_string() | ||
| end | ||
| end |
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