83 lines
2.0 KiB
Elixir
83 lines
2.0 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Web.Streamer.State do
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use GenServer
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require Logger
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alias Pleroma.Web.Streamer.StreamerSocket
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@env Mix.env()
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def start_link(_) do
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GenServer.start_link(__MODULE__, %{sockets: %{}}, name: __MODULE__)
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end
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def add_socket(topic, socket) do
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GenServer.call(__MODULE__, {:add, topic, socket})
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end
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def remove_socket(topic, socket) do
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do_remove_socket(@env, topic, socket)
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end
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def get_sockets do
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%{sockets: stream_sockets} = GenServer.call(__MODULE__, :get_state)
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stream_sockets
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end
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def init(init_arg) do
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{:ok, init_arg}
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end
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def handle_call(:get_state, _from, state) do
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{:reply, state, state}
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end
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def handle_call({:add, topic, socket}, _from, %{sockets: sockets} = state) do
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internal_topic = internal_topic(topic, socket)
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stream_socket = StreamerSocket.from_socket(socket)
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sockets_for_topic =
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sockets
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|> Map.get(internal_topic, [])
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|> List.insert_at(0, stream_socket)
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|> Enum.uniq()
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state = put_in(state, [:sockets, internal_topic], sockets_for_topic)
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Logger.debug("Got new conn for #{topic}")
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{:reply, state, state}
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end
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def handle_call({:remove, topic, socket}, _from, %{sockets: sockets} = state) do
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internal_topic = internal_topic(topic, socket)
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stream_socket = StreamerSocket.from_socket(socket)
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sockets_for_topic =
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sockets
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|> Map.get(internal_topic, [])
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|> List.delete(stream_socket)
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state = Kernel.put_in(state, [:sockets, internal_topic], sockets_for_topic)
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{:reply, state, state}
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end
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defp do_remove_socket(:test, _, _) do
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:ok
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end
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defp do_remove_socket(_env, topic, socket) do
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GenServer.call(__MODULE__, {:remove, topic, socket})
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end
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defp internal_topic(topic, socket)
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when topic in ~w[user user:notification direct] do
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"#{topic}:#{socket.assigns[:user].id}"
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end
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defp internal_topic(topic, _) do
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topic
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end
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end
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