146 lines
3.9 KiB
Elixir
146 lines
3.9 KiB
Elixir
defmodule Eventos.Service.Streamer do
|
|
use GenServer
|
|
require Logger
|
|
alias Eventos.Accounts.Actor
|
|
|
|
def init(args) do
|
|
{:ok, args}
|
|
end
|
|
|
|
def start_link do
|
|
spawn(fn ->
|
|
# 30 seconds
|
|
Process.sleep(1000 * 30)
|
|
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 ->
|
|
# 30 seconds
|
|
Process.sleep(1000 * 30)
|
|
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
|
|
# )
|
|
# |> Jason.encode!()
|
|
# }
|
|
# |> Jason.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}")
|
|
{: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}")
|
|
{:noreply, sockets}
|
|
end
|
|
|
|
def handle_cast(m, state) do
|
|
Logger.info("Unknown: #{inspect(m)}, #{inspect(state)}")
|
|
{:noreply, state}
|
|
end
|
|
|
|
def push_to_socket(topics, topic, item) do
|
|
Enum.each(topics[topic] || [], fn socket ->
|
|
# Get the current user so we have up-to-date blocks etc.
|
|
user = User.get_cached_by_ap_id(socket.assigns[:user].ap_id)
|
|
blocks = user.info["blocks"] || []
|
|
|
|
unless item.actor in blocks do
|
|
json =
|
|
%{
|
|
event: "update",
|
|
payload:
|
|
Pleroma.Web.MastodonAPI.StatusView.render(
|
|
"status.json",
|
|
activity: item,
|
|
for: user
|
|
)
|
|
|> Jason.encode!()
|
|
}
|
|
|> Jason.encode!()
|
|
|
|
send(socket.transport_pid, {:text, json})
|
|
end
|
|
end)
|
|
end
|
|
|
|
defp internal_topic("user", socket) do
|
|
"user:#{socket.assigns[:user].id}"
|
|
end
|
|
|
|
defp internal_topic(topic, _), do: topic
|
|
end
|