61 lines
1.4 KiB
Elixir
61 lines
1.4 KiB
Elixir
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defmodule WeewxProxy.Publisher do
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require Logger
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use GenServer
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alias WeewxProxy.Utils
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@type data :: %{required(atom) => number() | nil}
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defmodule State do
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# credo:disable-for-previous-line Credo.Check.Readability.ModuleDoc
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use TypedStruct
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typedstruct do
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field :last_update, non_neg_integer(), default: 0
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end
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end
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@name __MODULE__
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@spec child_spec(term) :: Supervisor.child_spec()
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def child_spec(_arg) do
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%{
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id: __MODULE__,
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start: {__MODULE__, :start_link, []},
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restart: :permanent,
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shutdown: 5000,
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type: :worker
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}
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end
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@spec start_link :: GenServer.on_start()
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def start_link do
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GenServer.start_link(__MODULE__, [], name: @name)
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end
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@spec publish(String.t(), data()) :: :ok
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def publish(topic, data) do
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filtered_data = :maps.filter(fn _k, v -> not is_nil(v) end, data)
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GenServer.cast(@name, {:publish, topic, filtered_data})
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end
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# Callbacks
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@impl true
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def init([]) do
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{:ok, %State{}}
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end
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@impl true
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def handle_cast({:publish, topic, data}, state) do
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{:ok, json_data} = Jason.encode(data)
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_ = Logger.info("Publishing record to #{topic}")
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_ = Tortoise311.publish(WeewxBroker, topic, json_data, qos: 0, timeout: 5000)
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_ = Logger.debug("Published record: #{inspect(data)}")
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{:noreply, %State{state | last_update: Utils.utc_timestamp()}}
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end
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end
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