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Development tooling for the Mob mobile framework
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lib/mob_dev/server/elixir_log_buffer.ex
defmodule MobDev.Server.ElixirLogBuffer do
@moduledoc """
Holds the last N server-side Elixir log lines in memory so the dashboard
can restore them on reconnect. Fed by `MobDev.Server.ElixirLogger`.
"""
use GenServer
@limit 200
@spec start_link(keyword()) :: GenServer.on_start()
def start_link(opts \\ []) do
GenServer.start_link(__MODULE__, opts, name: __MODULE__)
end
@spec get() :: [map()]
def get, do: GenServer.call(__MODULE__, :get)
@spec push(map()) :: :ok
def push(line), do: GenServer.cast(__MODULE__, {:push, line})
@spec clear() :: :ok
def clear, do: GenServer.cast(__MODULE__, :clear)
@impl GenServer
def init(_), do: {:ok, []}
@impl GenServer
def handle_call(:get, _from, lines), do: {:reply, lines, lines}
@impl GenServer
def handle_cast({:push, line}, lines) do
{:noreply, Enum.take([line | lines], @limit)}
end
def handle_cast(:clear, _lines), do: {:noreply, []}
end