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Streamer rework

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href 2020-05-07 09:13:32 +00:00 • committed by lain
commit 9491ba3e49
17 changed files with 535 additions and 957 deletions
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9
lib/pleroma/application.ex
View file

@ -173,7 +173,14 @@ defmodule Pleroma.Application do
defp streamer_child(env) when env in [:test, :benchmark], do: []
defp streamer_child(_) do
[Pleroma.Web.Streamer.supervisor()]
[
{Registry,
[
name: Pleroma.Web.Streamer.registry(),
keys: :duplicate,
partitions: System.schedulers_online()
]}
]
end
defp chat_child(_env, true) do

32
lib/pleroma/web/activity_pub/activity_pub.ex
View file

@ -170,12 +170,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
BackgroundWorker.enqueue("fetch_data_for_activity", %{"activity_id" => activity.id})
Notification.create_notifications(activity)
conversation = create_or_bump_conversation(activity, map["actor"])
participations = get_participations(conversation)
stream_out(activity)
stream_out_participations(participations)
{:ok, activity}
else
%Activity{} = activity ->
@ -198,6 +192,15 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
end
end
def notify_and_stream(activity) do
Notification.create_notifications(activity)
conversation = create_or_bump_conversation(activity, activity.actor)
participations = get_participations(conversation)
stream_out(activity)
stream_out_participations(participations)
end
defp create_or_bump_conversation(activity, actor) do
with {:ok, conversation} <- Conversation.create_or_bump_for(activity),
%User{} = user <- User.get_cached_by_ap_id(actor),
@ -274,6 +277,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
_ <- increase_poll_votes_if_vote(create_data),
{:quick_insert, false, activity} <- {:quick_insert, quick_insert?, activity},
{:ok, _actor} <- increase_note_count_if_public(actor, activity),
_ <- notify_and_stream(activity),
:ok <- maybe_federate(activity) do
{:ok, activity}
else
@ -301,6 +305,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
additional
),
{:ok, activity} <- insert(listen_data, local),
_ <- notify_and_stream(activity),
:ok <- maybe_federate(activity) do
{:ok, activity}
end
@ -325,6 +330,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
%{"to" => to, "type" => type, "actor" => actor.ap_id, "object" => object}
|> Utils.maybe_put("id", activity_id),
{:ok, activity} <- insert(data, local),
_ <- notify_and_stream(activity),
:ok <- maybe_federate(activity) do
{:ok, activity}
end
@ -344,6 +350,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
},
data <- Utils.maybe_put(data, "id", activity_id),
{:ok, activity} <- insert(data, local),
_ <- notify_and_stream(activity),
:ok <- maybe_federate(activity) do
{:ok, activity}
end
@ -365,6 +372,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
reaction_data <- make_emoji_reaction_data(user, object, emoji, activity_id),
{:ok, activity} <- insert(reaction_data, local),
{:ok, object} <- add_emoji_reaction_to_object(activity, object),
_ <- notify_and_stream(activity),
:ok <- maybe_federate(activity) do
{:ok, activity, object}
else
@ -391,6 +399,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
unreact_data <- make_undo_data(user, reaction_activity, activity_id),
{:ok, activity} <- insert(unreact_data, local),
{:ok, object} <- remove_emoji_reaction_from_object(reaction_activity, object),
_ <- notify_and_stream(activity),
:ok <- maybe_federate(activity) do
{:ok, activity, object}
else
@ -413,6 +422,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
{:ok, unlike_activity} <- insert(unlike_data, local),
{:ok, _activity} <- Repo.delete(like_activity),
{:ok, object} <- remove_like_from_object(like_activity, object),
_ <- notify_and_stream(unlike_activity),
:ok <- maybe_federate(unlike_activity) do
{:ok, unlike_activity, like_activity, object}
else
@ -442,6 +452,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
announce_data <- make_announce_data(user, object, activity_id, public),
{:ok, activity} <- insert(announce_data, local),
{:ok, object} <- add_announce_to_object(activity, object),
_ <- notify_and_stream(activity),
:ok <- maybe_federate(activity) do
{:ok, activity, object}
else
@ -468,6 +479,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
with %Activity{} = announce_activity <- get_existing_announce(actor.ap_id, object),
unannounce_data <- make_unannounce_data(actor, announce_activity, activity_id),
{:ok, unannounce_activity} <- insert(unannounce_data, local),
_ <- notify_and_stream(unannounce_activity),
:ok <- maybe_federate(unannounce_activity),
{:ok, _activity} <- Repo.delete(announce_activity),
{:ok, object} <- remove_announce_from_object(announce_activity, object) do
@ -490,6 +502,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
defp do_follow(follower, followed, activity_id, local) do
with data <- make_follow_data(follower, followed, activity_id),
{:ok, activity} <- insert(data, local),
_ <- notify_and_stream(activity),
:ok <- maybe_federate(activity) do
{:ok, activity}
else
@ -511,6 +524,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
{:ok, follow_activity} <- update_follow_state(follow_activity, "cancelled"),
unfollow_data <- make_unfollow_data(follower, followed, follow_activity, activity_id),
{:ok, activity} <- insert(unfollow_data, local),
_ <- notify_and_stream(activity),
:ok <- maybe_federate(activity) do
{:ok, activity}
else
@ -540,6 +554,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
with true <- outgoing_blocks,
block_data <- make_block_data(blocker, blocked, activity_id),
{:ok, activity} <- insert(block_data, local),
_ <- notify_and_stream(activity),
:ok <- maybe_federate(activity) do
{:ok, activity}
else
@ -560,6 +575,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
with %Activity{} = block_activity <- fetch_latest_block(blocker, blocked),
unblock_data <- make_unblock_data(blocker, blocked, block_activity, activity_id),
{:ok, activity} <- insert(unblock_data, local),
_ <- notify_and_stream(activity),
:ok <- maybe_federate(activity) do
{:ok, activity}
else
@ -594,6 +610,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
with flag_data <- make_flag_data(params, additional),
{:ok, activity} <- insert(flag_data, local),
{:ok, stripped_activity} <- strip_report_status_data(activity),
_ <- notify_and_stream(activity),
:ok <- maybe_federate(stripped_activity) do
User.all_superusers()
|> Enum.filter(fn user -> not is_nil(user.email) end)
@ -617,7 +634,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
}
with true <- origin.ap_id in target.also_known_as,
{:ok, activity} <- insert(params, local) do
{:ok, activity} <- insert(params, local),
_ <- notify_and_stream(activity) do
maybe_federate(activity)
BackgroundWorker.enqueue("move_following", %{

47
lib/pleroma/web/mastodon_api/websocket_handler.ex
View file

@ -12,6 +12,11 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
@behaviour :cowboy_websocket
# Cowboy timeout period.
@timeout :timer.seconds(30)
# Hibernate every X messages
@hibernate_every 100
@streams [
"public",
"public:local",
@ -25,9 +30,6 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
]
@anonymous_streams ["public", "public:local", "hashtag"]
# Handled by periodic keepalive in Pleroma.Web.Streamer.Ping.
@timeout :infinity
def init(%{qs: qs} = req, state) do
with params <- :cow_qs.parse_qs(qs),
sec_websocket <- :cowboy_req.header("sec-websocket-protocol", req, nil),
@ -42,7 +44,7 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
req
end
{:cowboy_websocket, req, %{user: user, topic: topic}, %{idle_timeout: @timeout}}
{:cowboy_websocket, req, %{user: user, topic: topic, count: 0}, %{idle_timeout: @timeout}}
else
{:error, code} ->
Logger.debug("#{__MODULE__} denied connection: #{inspect(code)} - #{inspect(req)}")
@ -57,7 +59,13 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
end
def websocket_init(state) do
send(self(), :subscribe)
Logger.debug(
"#{__MODULE__} accepted websocket connection for user #{
(state.user || %{id: "anonymous"}).id
}, topic #{state.topic}"
)
Streamer.add_socket(state.topic, state.user)
{:ok, state}
end
@ -66,19 +74,24 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
{:ok, state}
end
def websocket_info(:subscribe, state) do
Logger.debug(
"#{__MODULE__} accepted websocket connection for user #{
(state.user || %{id: "anonymous"}).id
}, topic #{state.topic}"
)
def websocket_info({:render_with_user, view, template, item}, state) do
user = %User{} = User.get_cached_by_ap_id(state.user.ap_id)
Streamer.add_socket(state.topic, streamer_socket(state))
{:ok, state}
unless Streamer.filtered_by_user?(user, item) do
websocket_info({:text, view.render(template, user, item)}, %{state | user: user})
else
{:ok, state}
end
end
def websocket_info({:text, message}, state) do
{:reply, {:text, message}, state}
# If the websocket processed X messages, force an hibernate/GC.
# We don't hibernate at every message to balance CPU usage/latency with RAM usage.
if state.count > @hibernate_every do
{:reply, {:text, message}, %{state | count: 0}, :hibernate}
else
{:reply, {:text, message}, %{state | count: state.count + 1}}
end
end
def terminate(reason, _req, state) do
@ -88,7 +101,7 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
}, topic #{state.topic || "?"}: #{inspect(reason)}"
)
Streamer.remove_socket(state.topic, streamer_socket(state))
Streamer.remove_socket(state.topic)
:ok
end
@ -136,8 +149,4 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
end
defp expand_topic(topic, _), do: topic
defp streamer_socket(state) do
%{transport_pid: self(), assigns: state}
end
end

37
lib/pleroma/web/streamer/ping.ex
View file

@ -1,37 +0,0 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
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

82
lib/pleroma/web/streamer/state.ex
View file

@ -1,82 +0,0 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.Streamer.State do
use GenServer
require Logger
alias Pleroma.Web.Streamer.StreamerSocket
@env Mix.env()
def start_link(_) do
GenServer.start_link(__MODULE__, %{sockets: %{}}, name: __MODULE__)
end
def add_socket(topic, socket) do
GenServer.call(__MODULE__, {:add, topic, socket})
end
def remove_socket(topic, socket) do
do_remove_socket(@env, topic, socket)
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, topic, socket}, _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, topic, socket}, _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 do_remove_socket(:test, _, _) do
:ok
end
defp do_remove_socket(_env, topic, socket) do
GenServer.call(__MODULE__, {:remove, topic, socket})
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

250
lib/pleroma/web/streamer/streamer.ex
View file

@ -3,53 +3,241 @@
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.Streamer do
alias Pleroma.Web.Streamer.State
alias Pleroma.Web.Streamer.Worker
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.StreamerView
@timeout 60_000
@mix_env Mix.env()
@registry Pleroma.Web.StreamerRegistry
def add_socket(topic, socket) do
State.add_socket(topic, socket)
def registry, do: @registry
def add_socket(topic, %User{} = user) do
if should_env_send?(), do: Registry.register(@registry, user_topic(topic, user), true)
end
def remove_socket(topic, socket) do
State.remove_socket(topic, socket)
def add_socket(topic, _) do
if should_env_send?(), do: Registry.register(@registry, topic, false)
end
def get_sockets do
State.get_sockets()
def remove_socket(topic) do
if should_env_send?(), do: Registry.unregister(@registry, topic)
end
def stream(topics, items) do
if should_send?() do
Task.async(fn ->
:poolboy.transaction(
:streamer_worker,
&Worker.stream(&1, topics, items),
@timeout
)
def stream(topics, item) when is_list(topics) do
if should_env_send?() do
Enum.each(topics, fn t ->
spawn(fn -> do_stream(t, item) end)
end)
end
:ok
end
def supervisor, do: Pleroma.Web.Streamer.Supervisor
def stream(topic, items) when is_list(items) do
if should_env_send?() do
Enum.each(items, fn i ->
spawn(fn -> do_stream(topic, i) end)
end)
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)
:ok
end
end
defp handle_should_send(:benchmark), do: false
def stream(topic, item) do
if should_env_send?() do
spawn(fn -> do_stream(topic, item) end)
end
defp handle_should_send(_), do: true
:ok
end
def filtered_by_user?(%User{} = user, %Activity{} = item) do
%{block: blocked_ap_ids, mute: muted_ap_ids, reblog_mute: reblog_muted_ap_ids} =
User.outgoing_relationships_ap_ids(user, [:block, :mute, :reblog_mute])
recipient_blocks = MapSet.new(blocked_ap_ids ++ muted_ap_ids)
recipients = MapSet.new(item.recipients)
domain_blocks = Pleroma.Web.ActivityPub.MRF.subdomains_regex(user.domain_blocks)
with parent <- Object.normalize(item) || item,
true <-
Enum.all?([blocked_ap_ids, muted_ap_ids], &(item.actor not in &1)),
true <- item.data["type"] != "Announce" || item.actor not in reblog_muted_ap_ids,
true <- Enum.all?([blocked_ap_ids, muted_ap_ids], &(parent.data["actor"] not in &1)),
true <- MapSet.disjoint?(recipients, recipient_blocks),
%{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
false
else
_ -> true
end
end
def filtered_by_user?(%User{} = user, %Notification{activity: activity}) do
filtered_by_user?(user, activity)
end
defp do_stream("direct", 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(user_topic, item)
end)
end
defp do_stream("participation", participation) do
user_topic = "direct:#{participation.user_id}"
Logger.debug("Trying to push a conversation participation to #{user_topic}\n\n")
push_to_socket(user_topic, participation)
end
defp do_stream("list", 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(list_topic, item)
end)
end
defp do_stream(topic, %Notification{} = item)
when topic in ["user", "user:notification"] do
Registry.dispatch(@registry, "#{topic}:#{item.user_id}", fn list ->
Enum.each(list, fn {pid, _auth} ->
send(pid, {:render_with_user, StreamerView, "notification.json", item})
end)
end)
end
defp do_stream("user", 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(topic, item)
end)
end
defp do_stream(topic, item) do
Logger.debug("Trying to push to #{topic}")
Logger.debug("Pushing item to #{topic}")
push_to_socket(topic, item)
end
defp push_to_socket(topic, %Participation{} = participation) do
rendered = StreamerView.render("conversation.json", participation)
Registry.dispatch(@registry, topic, fn list ->
Enum.each(list, fn {pid, _} ->
send(pid, {:text, rendered})
end)
end)
end
defp push_to_socket(topic, %Activity{
data: %{"type" => "Delete", "deleted_activity_id" => deleted_activity_id}
}) do
rendered = Jason.encode!(%{event: "delete", payload: to_string(deleted_activity_id)})
Registry.dispatch(@registry, topic, fn list ->
Enum.each(list, fn {pid, _} ->
send(pid, {:text, rendered})
end)
end)
end
defp push_to_socket(_topic, %Activity{data: %{"type" => "Delete"}}), do: :noop
defp push_to_socket(topic, item) do
anon_render = StreamerView.render("update.json", item)
Registry.dispatch(@registry, topic, fn list ->
Enum.each(list, fn {pid, auth?} ->
if auth? do
send(pid, {:render_with_user, StreamerView, "update.json", item})
else
send(pid, {:text, anon_render})
end
end)
end)
end
defp thread_containment(_activity, %User{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
# In test environement, only return true if the registry is started.
# In benchmark environment, returns false.
# In any other environment, always returns true.
cond do
@mix_env == :test ->
def should_env_send? do
case Process.whereis(@registry) do
nil ->
false
pid ->
Process.alive?(pid)
end
end
@mix_env == :benchmark ->
def should_env_send?, do: false
true ->
def should_env_send?, do: true
end
defp user_topic(topic, user)
when topic in ~w[user user:notification direct] do
"#{topic}:#{user.id}"
end
defp user_topic(topic, _) do
topic
end
end

35
lib/pleroma/web/streamer/streamer_socket.ex
View file

@ -1,35 +0,0 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
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

37
lib/pleroma/web/streamer/supervisor.ex
View file

@ -1,37 +0,0 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
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

208
lib/pleroma/web/streamer/worker.ex
View file

@ -1,208 +0,0 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
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
%{block: blocked_ap_ids, mute: muted_ap_ids, reblog_mute: reblog_muted_ap_ids} =
User.outgoing_relationships_ap_ids(user, [:block, :mute, :reblog_mute])
recipient_blocks = MapSet.new(blocked_ap_ids ++ muted_ap_ids)
recipients = MapSet.new(item.recipients)
domain_blocks = Pleroma.Web.ActivityPub.MRF.subdomains_regex(user.domain_blocks)
with parent <- Object.normalize(item) || item,
true <-
Enum.all?([blocked_ap_ids, muted_ap_ids], &(item.actor not in &1)),
true <- item.data["type"] != "Announce" || item.actor not in reblog_muted_ap_ids,
true <- Enum.all?([blocked_ap_ids, muted_ap_ids], &(parent.data["actor"] not in &1)),
true <- MapSet.disjoint?(recipients, recipient_blocks),
%{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, %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)
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
@spec thread_containment(Activity.t(), User.t()) :: boolean()
defp thread_containment(_activity, %User{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