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Elixir Z-Wave library
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lib/grizzly/storage/command_watcher.ex
defmodule Grizzly.Storage.CommandWatcher do
@moduledoc false
# A genserver that listens for certain commands (unsolicited or as responses)
# and updates storage.
use GenServer
alias Grizzly.Report
alias Grizzly.Storage
alias Grizzly.ZWave.Command
require Logger
@spec start_link(keyword()) :: GenServer.on_start()
def start_link(_) do
GenServer.start_link(__MODULE__, :ok, name: __MODULE__)
end
@impl GenServer
def init(:ok) do
Grizzly.subscribe([
:version_command_class_report,
:wake_up_interval_report,
:wake_up_notification
])
{:ok, %{}}
end
@impl GenServer
def handle_info({:grizzly, :report, %Report{node_id: node_id, command: command}}, state) do
Logger.info("CommandWatcher received command #{inspect(command)} for node #{node_id}")
handle_command(node_id, command)
{:noreply, state}
end
defp handle_command(node_id, %Command{name: :wake_up_interval_report} = cmd) do
interval = Command.param!(cmd, :seconds)
Storage.put_node_wakeup_interval(node_id, interval)
end
defp handle_command(node_id, %Command{name: :wake_up_notification}) do
Storage.put_node_last_awake(node_id, DateTime.utc_now())
end
defp handle_command(node_id, %Command{name: :version_command_class_report} = cmd) do
command_class = Command.param!(cmd, :command_class)
version = Command.param!(cmd, :version)
Storage.put_node_command_class_version(node_id, command_class, version)
end
end