113 lines
3.4 KiB
Elixir
113 lines
3.4 KiB
Elixir
defmodule Pleroma.Web.Streamer do
|
|
use GenServer
|
|
require Logger
|
|
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
|
|
|
|
def add_socket(topic, socket) do
|
|
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: :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: "notification",
|
|
payload: Pleroma.Web.MastodonAPI.MastodonAPIController.render_notification(socket.assigns["user"], item) |> Poison.encode!
|
|
} |> Poison.encode!
|
|
|
|
send socket.transport_pid, {:text, json}
|
|
end)
|
|
{: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)
|
|
Logger.debug("Got new conn for #{topic}")
|
|
IO.inspect(sockets)
|
|
{: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
|