MastoAPI: Basic streaming.

lib/pleroma/web/streamer.ex

@@ -0,0 +1,45 @@
+defmodule Pleroma.Web.Streamer do
+  use GenServer
+  require Logger
+  import Plug.Conn
+
+  def start_link do
+    GenServer.start_link(__MODULE__, %{}, name: __MODULE__)
+  end
+
+  def add_socket(topic, socket) do
+    GenServer.cast(__MODULE__, %{action: :add, socket: socket, topic: topic})
+  end
+
+  def stream(topic, item) do
+    GenServer.cast(__MODULE__, %{action: :stream, topic: topic, item: item})
+  end
+
+  def handle_cast(%{action: :stream, topic: topic, item: item}, topics) do
+    Logger.debug("Trying to push to #{topic}")
+    Logger.debug("Pushing item to #{topic}")
+    Enum.each(topics[topic] || [], fn (socket) ->
+      json = %{
+        event: "update",
+        payload: Pleroma.Web.MastodonAPI.StatusView.render("status.json", activity: item) |> Poison.encode!
+      } |> Poison.encode!
+
+      send socket.transport_pid, {:text, json}
+    end)
+    {:noreply, topics}
+  end
+
+  def handle_cast(%{action: :add, topic: topic, socket: socket}, sockets) do
+    sockets_for_topic = sockets[topic] || []
+    sockets_for_topic = Enum.uniq([socket | sockets_for_topic])
+    sockets = Map.put(sockets, topic, sockets_for_topic)
+    Logger.debug("Got new conn for #{topic}")
+    IO.inspect(sockets)
+    {:noreply, sockets}
+  end
+
+  def handle_cast(m, state) do
+    IO.inspect("Unknown: #{inspect(m)}, #{inspect(state)}")
+    {:noreply, state}
+  end
+end