Alek Ratzloff
a627842717
Previously, if a message was supposed to be handled by 3 modules, they would all be handled, synchronously, in the same process. If any of them crashed, it would affect any other modules that needed to be processed ahead of it. Now, a new task is spun up for each module, so module handlers are now indpendent. Signed-off-by: Alek Ratzloff <alekratz@gmail.com>
90 lines
2.0 KiB
Elixir
90 lines
2.0 KiB
Elixir
# REWRITE
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defmodule Omnibot.Irc do
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require Logger
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alias Omnibot.Irc.Msg
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alias Omnibot.{Config, State}
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use GenServer
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## Client API
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def start_link(opts \\ []) do
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GenServer.start_link(__MODULE__, :ok, opts)
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end
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def send_msg(irc, msg) do
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GenServer.cast(irc, {:send_msg, msg})
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end
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def send_msg(irc, command, params) when is_list(params) do
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cfg = State.cfg()
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GenServer.cast(irc, {:send_msg, Config.msg(cfg, command, params)})
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end
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def send_msg(irc, command, param), do: send_msg(irc, command, [param])
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def send_to(irc, channel, text), do: send_msg(irc, "PRIVMSG", [channel, text])
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def join(irc, channel), do: send_msg(irc, "JOIN", channel)
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def part(irc, channel), do: send_msg(irc, "PART", channel)
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defp route_msg(irc, msg) do
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channel = Msg.channel(msg)
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State.channel_modules(channel)
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|> Enum.each(fn {module, _} ->
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# Create a new task for each module
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{:ok, _task} = Task.Supervisor.start_child(
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Omnibot.RouterSupervisor,
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fn -> module.on_msg(irc, msg) end
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)
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end)
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end
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## Server callbacks
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@impl true
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def init(:ok) do
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cfg = State.cfg()
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_ssl = cfg.ssl
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{:ok, socket} =
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:gen_tcp.connect(to_charlist(cfg.server), cfg.port, [:binary, active: false, packet: :line])
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# Wait for first message
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send_msg(self(), "NICK", cfg.nick)
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send_msg(self(), "USER", [cfg.user, "0", "*", cfg.real])
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:inet.setopts(socket, [active: true])
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{:ok, socket}
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end
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defp write(socket, msg) do
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msg = String.Chars.to_string(msg)
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Logger.debug(">>> #{msg}")
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:gen_tcp.send(socket, "#{msg}\r\n")
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end
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@impl true
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def handle_cast({:send_msg, msg}, socket) do
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write(socket, msg)
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{:noreply, socket}
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end
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@impl true
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def handle_cast({:tcp, line}, socket) do
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Logger.debug(line)
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{:noreply, socket}
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end
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@impl true
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def handle_info({:tcp, _socket, line}, socket) do
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Logger.debug(String.trim(line))
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msg = Msg.parse(line)
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# Send the message to the router
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route_msg(self(), msg)
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{:noreply, socket}
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end
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end
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