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Revert "Merge branch 'streamer-refactoring' into 'develop'"

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This reverts merge request !1653
This commit is contained in:
kaniini 2019-09-16 09:09:21 +00:00
commit c623b4324d
26 changed files with 447 additions and 888 deletions
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33
lib/pleroma/web/streamer/ping.ex
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defmodule Pleroma.Web.Streamer.Ping do
use GenServer
require Logger
alias Pleroma.Web.Streamer.State
alias Pleroma.Web.Streamer.StreamerSocket
@keepalive_interval :timer.seconds(30)
def start_link(opts) do
ping_interval = Keyword.get(opts, :ping_interval, @keepalive_interval)
GenServer.start_link(__MODULE__, %{ping_interval: ping_interval}, name: __MODULE__)
end
def init(%{ping_interval: ping_interval} = args) do
Process.send_after(self(), :ping, ping_interval)
{:ok, args}
end
def handle_info(:ping, %{ping_interval: ping_interval} = state) do
State.get_sockets()
|> Map.values()
|> List.flatten()
|> Enum.each(fn %StreamerSocket{transport_pid: transport_pid} ->
Logger.debug("Sending keepalive ping")
send(transport_pid, {:text, ""})
end)
Process.send_after(self(), :ping, ping_interval)
{:noreply, state}
end
end

68
lib/pleroma/web/streamer/state.ex
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defmodule Pleroma.Web.Streamer.State do
use GenServer
require Logger
alias Pleroma.Web.Streamer.StreamerSocket
def start_link(_) do
GenServer.start_link(__MODULE__, %{sockets: %{}}, name: __MODULE__)
end
def add_socket(topic, socket) do
GenServer.call(__MODULE__, {:add, socket, topic})
end
def remove_socket(topic, socket) do
GenServer.call(__MODULE__, {:remove, socket, topic})
end
def get_sockets do
%{sockets: stream_sockets} = GenServer.call(__MODULE__, :get_state)
stream_sockets
end
def init(init_arg) do
{:ok, init_arg}
end
def handle_call(:get_state, _from, state) do
{:reply, state, state}
end
def handle_call({:add, socket, topic}, _from, %{sockets: sockets} = state) do
internal_topic = internal_topic(topic, socket)
stream_socket = StreamerSocket.from_socket(socket)
sockets_for_topic =
sockets
|> Map.get(internal_topic, [])
|> List.insert_at(0, stream_socket)
|> Enum.uniq()
state = put_in(state, [:sockets, internal_topic], sockets_for_topic)
Logger.debug("Got new conn for #{topic}")
{:reply, state, state}
end
def handle_call({:remove, socket, topic}, _from, %{sockets: sockets} = state) do
internal_topic = internal_topic(topic, socket)
stream_socket = StreamerSocket.from_socket(socket)
sockets_for_topic =
sockets
|> Map.get(internal_topic, [])
|> List.delete(stream_socket)
state = Kernel.put_in(state, [:sockets, internal_topic], sockets_for_topic)
{:reply, state, state}
end
defp internal_topic(topic, socket)
when topic in ~w[user user:notification direct] do
"#{topic}:#{socket.assigns[:user].id}"
end
defp internal_topic(topic, _) do
topic
end
end

55
lib/pleroma/web/streamer/streamer.ex
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# Pleroma: A lightweight social networking server
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.Streamer do
alias Pleroma.Web.Streamer.State
alias Pleroma.Web.Streamer.Worker
@timeout 60_000
@mix_env Mix.env()
def add_socket(topic, socket) do
State.add_socket(topic, socket)
end
def remove_socket(topic, socket) do
State.remove_socket(topic, socket)
end
def get_sockets do
State.get_sockets()
end
def stream(topics, items) do
if should_send?() do
Task.async(fn ->
:poolboy.transaction(
:streamer_worker,
&Worker.stream(&1, topics, items),
@timeout
)
end)
end
end
def supervisor, do: Pleroma.Web.Streamer.Supervisor
defp should_send? do
handle_should_send(@mix_env)
end
defp handle_should_send(:test) do
case Process.whereis(:streamer_worker) do
nil ->
false
pid ->
Process.alive?(pid)
end
end
defp handle_should_send(_) do
true
end
end

31
lib/pleroma/web/streamer/streamer_socket.ex
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defmodule Pleroma.Web.Streamer.StreamerSocket do
defstruct transport_pid: nil, user: nil
alias Pleroma.User
alias Pleroma.Web.Streamer.StreamerSocket
def from_socket(%{
transport_pid: transport_pid,
assigns: %{user: nil}
}) do
%StreamerSocket{
transport_pid: transport_pid
}
end
def from_socket(%{
transport_pid: transport_pid,
assigns: %{user: %User{} = user}
}) do
%StreamerSocket{
transport_pid: transport_pid,
user: user
}
end
def from_socket(%{transport_pid: transport_pid}) do
%StreamerSocket{
transport_pid: transport_pid
}
end
end

33
lib/pleroma/web/streamer/supervisor.ex
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defmodule Pleroma.Web.Streamer.Supervisor do
use Supervisor
def start_link(opts) do
Supervisor.start_link(__MODULE__, opts, name: __MODULE__)
end
def init(args) do
children = [
{Pleroma.Web.Streamer.State, args},
{Pleroma.Web.Streamer.Ping, args},
:poolboy.child_spec(:streamer_worker, poolboy_config())
]
opts = [strategy: :one_for_one, name: Pleroma.Web.Streamer.Supervisor]
Supervisor.init(children, opts)
end
defp poolboy_config do
opts =
Pleroma.Config.get(:streamer,
workers: 3,
overflow_workers: 2
)
[
{:name, {:local, :streamer_worker}},
{:worker_module, Pleroma.Web.Streamer.Worker},
{:size, opts[:workers]},
{:max_overflow, opts[:overflow_workers]}
]
end
end

220
lib/pleroma/web/streamer/worker.ex
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defmodule Pleroma.Web.Streamer.Worker do
use GenServer
require Logger
alias Pleroma.Activity
alias Pleroma.Config
alias Pleroma.Conversation.Participation
alias Pleroma.Notification
alias Pleroma.Object
alias Pleroma.User
alias Pleroma.Web.ActivityPub.ActivityPub
alias Pleroma.Web.ActivityPub.Visibility
alias Pleroma.Web.CommonAPI
alias Pleroma.Web.Streamer.State
alias Pleroma.Web.Streamer.StreamerSocket
alias Pleroma.Web.StreamerView
def start_link(_) do
GenServer.start_link(__MODULE__, %{}, [])
end
def init(init_arg) do
{:ok, init_arg}
end
def stream(pid, topics, items) do
GenServer.call(pid, {:stream, topics, items})
end
def handle_call({:stream, topics, item}, _from, state) when is_list(topics) do
Enum.each(topics, fn t ->
do_stream(%{topic: t, item: item})
end)
{:reply, state, state}
end
def handle_call({:stream, topic, items}, _from, state) when is_list(items) do
Enum.each(items, fn i ->
do_stream(%{topic: topic, item: i})
end)
{:reply, state, state}
end
def handle_call({:stream, topic, item}, _from, state) do
do_stream(%{topic: topic, item: item})
{:reply, state, state}
end
defp do_stream(%{topic: "direct", item: item}) do
recipient_topics =
User.get_recipients_from_activity(item)
|> Enum.map(fn %{id: id} -> "direct:#{id}" end)
Enum.each(recipient_topics, fn user_topic ->
Logger.debug("Trying to push direct message to #{user_topic}\n\n")
push_to_socket(State.get_sockets(), user_topic, item)
end)
end
defp do_stream(%{topic: "participation", item: participation}) do
user_topic = "direct:#{participation.user_id}"
Logger.debug("Trying to push a conversation participation to #{user_topic}\n\n")
push_to_socket(State.get_sockets(), user_topic, participation)
end
defp do_stream(%{topic: "list", item: item}) do
# filter the recipient list if the activity is not public, see #270.
recipient_lists =
case Visibility.is_public?(item) do
true ->
Pleroma.List.get_lists_from_activity(item)
_ ->
Pleroma.List.get_lists_from_activity(item)
|> Enum.filter(fn list ->
owner = User.get_cached_by_id(list.user_id)
Visibility.visible_for_user?(item, owner)
end)
end
recipient_topics =
recipient_lists
|> Enum.map(fn %{id: id} -> "list:#{id}" end)
Enum.each(recipient_topics, fn list_topic ->
Logger.debug("Trying to push message to #{list_topic}\n\n")
push_to_socket(State.get_sockets(), list_topic, item)
end)
end
defp do_stream(%{topic: topic, item: %Notification{} = item})
when topic in ["user", "user:notification"] do
State.get_sockets()
|> Map.get("#{topic}:#{item.user_id}", [])
|> Enum.each(fn %StreamerSocket{transport_pid: transport_pid, user: socket_user} ->
with %User{} = user <- User.get_cached_by_ap_id(socket_user.ap_id),
true <- should_send?(user, item) do
send(transport_pid, {:text, StreamerView.render("notification.json", socket_user, item)})
end
end)
end
defp do_stream(%{topic: "user", item: item}) 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(State.get_sockets(), topic, item)
end)
end
defp do_stream(%{topic: topic, item: item}) do
Logger.debug("Trying to push to #{topic}")
Logger.debug("Pushing item to #{topic}")
push_to_socket(State.get_sockets(), topic, item)
end
defp should_send?(%User{} = user, %Activity{} = item) do
blocks = user.info.blocks || []
mutes = user.info.mutes || []
reblog_mutes = user.info.muted_reblogs || []
domain_blocks = Pleroma.Web.ActivityPub.MRF.subdomains_regex(user.info.domain_blocks)
with parent when not is_nil(parent) <- Object.normalize(item),
true <- Enum.all?([blocks, mutes, reblog_mutes], &(item.actor not in &1)),
true <- Enum.all?([blocks, mutes], &(parent.data["actor"] not in &1)),
%{host: item_host} <- URI.parse(item.actor),
%{host: parent_host} <- URI.parse(parent.data["actor"]),
false <- Pleroma.Web.ActivityPub.MRF.subdomain_match?(domain_blocks, item_host),
false <- Pleroma.Web.ActivityPub.MRF.subdomain_match?(domain_blocks, parent_host),
true <- thread_containment(item, user),
false <- CommonAPI.thread_muted?(user, item) do
true
else
_ -> false
end
end
defp should_send?(%User{} = user, %Notification{activity: activity}) do
should_send?(user, activity)
end
def push_to_socket(topics, topic, %Activity{data: %{"type" => "Announce"}} = item) do
Enum.each(topics[topic] || [], fn %StreamerSocket{
transport_pid: transport_pid,
user: socket_user
} ->
# Get the current user so we have up-to-date blocks etc.
if socket_user do
user = User.get_cached_by_ap_id(socket_user.ap_id)
if should_send?(user, item) do
send(transport_pid, {:text, StreamerView.render("update.json", item, user)})
end
else
send(transport_pid, {:text, StreamerView.render("update.json", item)})
end
end)
end
def push_to_socket(topics, topic, %Participation{} = participation) do
Enum.each(topics[topic] || [], fn %StreamerSocket{transport_pid: transport_pid} ->
send(transport_pid, {:text, StreamerView.render("conversation.json", participation)})
end)
end
def push_to_socket(topics, topic, %Activity{
data: %{"type" => "Delete", "deleted_activity_id" => deleted_activity_id}
}) do
Enum.each(topics[topic] || [], fn %StreamerSocket{transport_pid: transport_pid} ->
send(
transport_pid,
{:text, %{event: "delete", payload: to_string(deleted_activity_id)} |> Jason.encode!()}
)
end)
end
def push_to_socket(_topics, _topic, %Activity{data: %{"type" => "Delete"}}), do: :noop
def push_to_socket(topics, topic, item) do
Enum.each(topics[topic] || [], fn %StreamerSocket{
transport_pid: transport_pid,
user: socket_user
} ->
# Get the current user so we have up-to-date blocks etc.
if socket_user do
user = User.get_cached_by_ap_id(socket_user.ap_id)
blocks = user.info.blocks || []
mutes = user.info.mutes || []
with true <- Enum.all?([blocks, mutes], &(item.actor not in &1)),
true <- thread_containment(item, user) do
send(transport_pid, {:text, StreamerView.render("update.json", item, user)})
end
else
send(transport_pid, {:text, StreamerView.render("update.json", item)})
end
end)
end
@spec thread_containment(Activity.t(), User.t()) :: boolean()
defp thread_containment(_activity, %User{info: %{skip_thread_containment: true}}), do: true
defp thread_containment(activity, user) do
if Config.get([:instance, :skip_thread_containment]) do
true
else
ActivityPub.contain_activity(activity, user)
end
end
end