defmodule Pleroma.Web.Streamer do
use GenServer
require Logger
- import Plug.Conn
+ alias Pleroma.{User, Notification}
def start_link do
+ spawn(fn ->
+ Process.sleep(1000 * 30) # 30 seconds
+ GenServer.cast(__MODULE__, %{action: :ping})
+ end)
GenServer.start_link(__MODULE__, %{}, name: __MODULE__)
end
GenServer.cast(__MODULE__, %{action: :add, socket: socket, topic: topic})
end
+ def remove_socket(topic, socket) do
+ GenServer.cast(__MODULE__, %{action: :remove, 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}")
+ def handle_cast(%{action: :ping}, topics) do
+ Map.values(topics)
+ |> List.flatten
+ |> Enum.each(fn (socket) ->
+ Logger.debug("Sending keepalive ping")
+ send socket.transport_pid, {:text, ""}
+ end)
+ spawn(fn ->
+ Process.sleep(1000 * 30) # 30 seconds
+ GenServer.cast(__MODULE__, %{action: :ping})
+ end)
+ {:noreply, topics}
+ end
+
+ def handle_cast(%{action: :stream, topic: "user", item: %Notification{} = item}, topics) do
+ topic = "user:#{item.user_id}"
Enum.each(topics[topic] || [], fn (socket) ->
json = %{
- event: "update",
- payload: Pleroma.Web.MastodonAPI.StatusView.render("status.json", activity: item) |> Poison.encode!
+ event: "notification",
+ payload: Pleroma.Web.MastodonAPI.MastodonAPIController.render_notification(socket.assigns["user"], item) |> Poison.encode!
} |> Poison.encode!
send socket.transport_pid, {:text, json}
{:noreply, topics}
end
+ def handle_cast(%{action: :stream, topic: "user", item: item}, topics) do
+ Logger.debug("Trying to push to users")
+ recipient_topics = User.get_recipients_from_activity(item)
+ |> Enum.map(fn (%{id: id}) -> "user:#{id}" end)
+
+ Enum.each(recipient_topics, fn (topic) ->
+ push_to_socket(topics, topic, item)
+ end)
+ {:noreply, topics}
+ 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}")
+ push_to_socket(topics, topic, item)
+ {:noreply, topics}
+ end
+
def handle_cast(%{action: :add, topic: topic, socket: socket}, sockets) do
+ topic = internal_topic(topic, socket)
sockets_for_topic = sockets[topic] || []
sockets_for_topic = Enum.uniq([socket | sockets_for_topic])
sockets = Map.put(sockets, topic, sockets_for_topic)
{:noreply, sockets}
end
+ def handle_cast(%{action: :remove, topic: topic, socket: socket}, sockets) do
+ topic = internal_topic(topic, socket)
+ sockets_for_topic = sockets[topic] || []
+ sockets_for_topic = List.delete(sockets_for_topic, socket)
+ sockets = Map.put(sockets, topic, sockets_for_topic)
+ Logger.debug("Removed 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
+
+ def push_to_socket(topics, topic, item) do
+ Enum.each(topics[topic] || [], fn (socket) ->
+ json = %{
+ event: "update",
+ payload: Pleroma.Web.MastodonAPI.StatusView.render("status.json", activity: item, for: socket.assigns[:user]) |> Poison.encode!
+ } |> Poison.encode!
+
+ send socket.transport_pid, {:text, json}
+ end)
+ end
+
+ defp internal_topic("user", socket) do
+ "user:#{socket.assigns[:user].id}"
+ end
+
+ defp internal_topic(topic, _), do: topic
end