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Federate data through persistent websocket connections

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This commit is contained in:
Steven Fuchs 2020-09-18 11:58:22 +00:00 committed by lain
parent 49584a9928
commit f2ef9735c5
25 changed files with 1479 additions and 49 deletions
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3
CHANGELOG.md
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@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
## Unreleased
### Added
- Experimental websocket-based federation between Pleroma instances.
### Changed
- Renamed `:await_up_timeout` in `:connections_pool` namespace to `:connect_timeout`, old name is deprecated.

12
config/config.exs
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@ -130,6 +130,7 @@ config :pleroma, Pleroma.Web.Endpoint,
dispatch: [
{:_,
[
{"/api/fedsocket/v1", Pleroma.Web.FedSockets.IncomingHandler, []},
{"/api/v1/streaming", Pleroma.Web.MastodonAPI.WebsocketHandler, []},
{"/websocket", Phoenix.Endpoint.CowboyWebSocket,
{Phoenix.Transports.WebSocket,
@ -148,6 +149,16 @@ config :pleroma, Pleroma.Web.Endpoint,
"SameSite=Lax"
]
config :pleroma, :fed_sockets,
enabled: false,
connection_duration: :timer.hours(8),
rejection_duration: :timer.minutes(15),
fed_socket_fetches: [
default: 12_000,
interval: 3_000,
lazy: false
]
# Configures Elixir's Logger
config :logger, :console,
level: :debug,
@ -532,6 +543,7 @@ config :pleroma, Oban,
token_expiration: 5,
federator_incoming: 50,
federator_outgoing: 50,
ingestion_queue: 50,
web_push: 50,
mailer: 10,
transmogrifier: 20,

13
config/description.exs
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@ -270,6 +270,19 @@ config :pleroma, :config_description, [
}
]
},
%{
group: :pleroma,
key: :fed_sockets,
type: :group,
description: "Websocket based federation",
children: [
%{
key: :enabled,
type: :boolean,
description: "Enable FedSockets"
}
]
},
%{
group: :pleroma,
key: Pleroma.Emails.Mailer,

5
config/test.exs
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@ -19,6 +19,11 @@ config :logger, :console,
level: :warn,
format: "\n[$level] $message\n"
config :pleroma, :fed_sockets,
enabled: false,
connection_duration: 5,
rejection_duration: 5
config :pleroma, :auth, oauth_consumer_strategies: []
config :pleroma, Pleroma.Upload,

10
docs/configuration/cheatsheet.md
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@ -225,6 +225,16 @@ Enables the worker which processes posts scheduled for deletion. Pinned posts ar
* `enabled`: whether expired activities will be sent to the job queue to be deleted
## FedSockets
FedSockets is an experimental feature allowing for Pleroma backends to federate using a persistant websocket connection as opposed to making each federation a seperate http connection. This feature is currently off by default. It is configurable throught he following options.
### :fedsockets
* `enabled`: Enables FedSockets for this instance. `false` by default.
* `connection_duration`: Time an idle websocket is kept open.
* `rejection_duration`: Failures to connect via FedSockets will not be retried for this period of time.
* `fed_socket_fetches` and `fed_socket_rejections`: Settings passed to `cachex` for the fetch registry, and rejection stacks. See `Pleroma.Web.FedSockets` for more details.
## Frontends
### :frontend_configurations

9
lib/pleroma/application.ex
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@ -99,7 +99,7 @@ defmodule Pleroma.Application do
{Oban, Config.get(Oban)}
] ++
task_children(@env) ++
streamer_child(@env) ++
dont_run_in_test(@env) ++
chat_child(@env, chat_enabled?()) ++
[
Pleroma.Web.Endpoint,
@ -188,16 +188,17 @@ defmodule Pleroma.Application do
defp chat_enabled?, do: Config.get([:chat, :enabled])
defp streamer_child(env) when env in [:test, :benchmark], do: []
defp dont_run_in_test(env) when env in [:test, :benchmark], do: []
defp streamer_child(_) do
defp dont_run_in_test(_) do
[
{Registry,
[
name: Pleroma.Web.Streamer.registry(),
keys: :duplicate,
partitions: System.schedulers_online()
]}
]},
Pleroma.Web.FedSockets.Supervisor
]
end

66
lib/pleroma/object/fetcher.ex
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@ -12,6 +12,7 @@ defmodule Pleroma.Object.Fetcher do
alias Pleroma.Web.ActivityPub.ObjectValidator
alias Pleroma.Web.ActivityPub.Transmogrifier
alias Pleroma.Web.Federator
alias Pleroma.Web.FedSockets
require Logger
require Pleroma.Constants
@ -182,27 +183,20 @@ defmodule Pleroma.Object.Fetcher do
end
end
def fetch_and_contain_remote_object_from_id(id) when is_binary(id) do
def fetch_and_contain_remote_object_from_id(prm, opts \\ [])
def fetch_and_contain_remote_object_from_id(%{"id" => id}, opts),
do: fetch_and_contain_remote_object_from_id(id, opts)
def fetch_and_contain_remote_object_from_id(id, opts) when is_binary(id) do
Logger.debug("Fetching object #{id} via AP")
date = Pleroma.Signature.signed_date()
headers =
[{"accept", "application/activity+json"}]
|> maybe_date_fetch(date)
|> sign_fetch(id, date)
Logger.debug("Fetch headers: #{inspect(headers)}")
with {:scheme, true} <- {:scheme, String.starts_with?(id, "http")},
{:ok, %{body: body, status: code}} when code in 200..299 <- HTTP.get(id, headers),
{:ok, data} <- Jason.decode(body),
{:ok, body} <- get_object(id, opts),
{:ok, data} <- safe_json_decode(body),
:ok <- Containment.contain_origin_from_id(id, data) do
{:ok, data}
else
{:ok, %{status: code}} when code in [404, 410] ->
{:error, "Object has been deleted"}
{:scheme, _} ->
{:error, "Unsupported URI scheme"}
@ -214,8 +208,44 @@ defmodule Pleroma.Object.Fetcher do
end
end
def fetch_and_contain_remote_object_from_id(%{"id" => id}),
do: fetch_and_contain_remote_object_from_id(id)
def fetch_and_contain_remote_object_from_id(_id, _opts),
do: {:error, "id must be a string"}
def fetch_and_contain_remote_object_from_id(_id), do: {:error, "id must be a string"}
defp get_object(id, opts) do
with false <- Keyword.get(opts, :force_http, false),
{:ok, fedsocket} <- FedSockets.get_or_create_fed_socket(id) do
Logger.debug("fetching via fedsocket - #{inspect(id)}")
FedSockets.fetch(fedsocket, id)
else
_other ->
Logger.debug("fetching via http - #{inspect(id)}")
get_object_http(id)
end
end
defp get_object_http(id) do
date = Pleroma.Signature.signed_date()
headers =
[{"accept", "application/activity+json"}]
|> maybe_date_fetch(date)
|> sign_fetch(id, date)
case HTTP.get(id, headers) do
{:ok, %{body: body, status: code}} when code in 200..299 ->
{:ok, body}
{:ok, %{status: code}} when code in [404, 410] ->
{:error, "Object has been deleted"}
{:error, e} ->
{:error, e}
e ->
{:error, e}
end
end
defp safe_json_decode(nil), do: {:ok, nil}
defp safe_json_decode(json), do: Jason.decode(json)
end

6
lib/pleroma/signature.ex
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@ -39,7 +39,7 @@ defmodule Pleroma.Signature do
def fetch_public_key(conn) do
with %{"keyId" => kid} <- HTTPSignatures.signature_for_conn(conn),
{:ok, actor_id} <- key_id_to_actor_id(kid),
{:ok, public_key} <- User.get_public_key_for_ap_id(actor_id) do
{:ok, public_key} <- User.get_public_key_for_ap_id(actor_id, force_http: true) do
{:ok, public_key}
else
e ->
@ -50,8 +50,8 @@ defmodule Pleroma.Signature do
def refetch_public_key(conn) do
with %{"keyId" => kid} <- HTTPSignatures.signature_for_conn(conn),
{:ok, actor_id} <- key_id_to_actor_id(kid),
{:ok, _user} <- ActivityPub.make_user_from_ap_id(actor_id),
{:ok, public_key} <- User.get_public_key_for_ap_id(actor_id) do
{:ok, _user} <- ActivityPub.make_user_from_ap_id(actor_id, force_http: true),
{:ok, public_key} <- User.get_public_key_for_ap_id(actor_id, force_http: true) do
{:ok, public_key}
else
e ->

10
lib/pleroma/user.ex
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@ -1820,12 +1820,12 @@ defmodule Pleroma.User do
def html_filter_policy(_), do: Config.get([:markup, :scrub_policy])
def fetch_by_ap_id(ap_id), do: ActivityPub.make_user_from_ap_id(ap_id)
def fetch_by_ap_id(ap_id, opts \\ []), do: ActivityPub.make_user_from_ap_id(ap_id, opts)
def get_or_fetch_by_ap_id(ap_id) do
def get_or_fetch_by_ap_id(ap_id, opts \\ []) do
cached_user = get_cached_by_ap_id(ap_id)
maybe_fetched_user = needs_update?(cached_user) && fetch_by_ap_id(ap_id)
maybe_fetched_user = needs_update?(cached_user) && fetch_by_ap_id(ap_id, opts)
case {cached_user, maybe_fetched_user} do
{_, {:ok, %User{} = user}} ->
@ -1898,8 +1898,8 @@ defmodule Pleroma.User do
def public_key(_), do: {:error, "key not found"}
def get_public_key_for_ap_id(ap_id) do
with {:ok, %User{} = user} <- get_or_fetch_by_ap_id(ap_id),
def get_public_key_for_ap_id(ap_id, opts \\ []) do
with {:ok, %User{} = user} <- get_or_fetch_by_ap_id(ap_id, opts),
{:ok, public_key} <- public_key(user) do
{:ok, public_key}
else

14
lib/pleroma/web/activity_pub/activity_pub.ex
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@ -1270,10 +1270,12 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
def fetch_follow_information_for_user(user) do
with {:ok, following_data} <-
Fetcher.fetch_and_contain_remote_object_from_id(user.following_address),
Fetcher.fetch_and_contain_remote_object_from_id(user.following_address,
force_http: true
),
{:ok, hide_follows} <- collection_private(following_data),
{:ok, followers_data} <-
Fetcher.fetch_and_contain_remote_object_from_id(user.follower_address),
Fetcher.fetch_and_contain_remote_object_from_id(user.follower_address, force_http: true),
{:ok, hide_followers} <- collection_private(followers_data) do
{:ok,
%{
@ -1347,8 +1349,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
end
end
def fetch_and_prepare_user_from_ap_id(ap_id) do
with {:ok, data} <- Fetcher.fetch_and_contain_remote_object_from_id(ap_id),
def fetch_and_prepare_user_from_ap_id(ap_id, opts \\ []) do
with {:ok, data} <- Fetcher.fetch_and_contain_remote_object_from_id(ap_id, opts),
{:ok, data} <- user_data_from_user_object(data) do
{:ok, maybe_update_follow_information(data)}
else
@ -1390,13 +1392,13 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
end
end
def make_user_from_ap_id(ap_id) do
def make_user_from_ap_id(ap_id, opts \\ []) do
user = User.get_cached_by_ap_id(ap_id)
if user && !User.ap_enabled?(user) do
Transmogrifier.upgrade_user_from_ap_id(ap_id)
else
with {:ok, data} <- fetch_and_prepare_user_from_ap_id(ap_id) do
with {:ok, data} <- fetch_and_prepare_user_from_ap_id(ap_id, opts) do
if user do
user
|> User.remote_user_changeset(data)

34
lib/pleroma/web/activity_pub/publisher.ex
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@ -13,6 +13,7 @@ defmodule Pleroma.Web.ActivityPub.Publisher do
alias Pleroma.User
alias Pleroma.Web.ActivityPub.Relay
alias Pleroma.Web.ActivityPub.Transmogrifier
alias Pleroma.Web.FedSockets
require Pleroma.Constants
@ -50,15 +51,35 @@ defmodule Pleroma.Web.ActivityPub.Publisher do
def publish_one(%{inbox: inbox, json: json, actor: %User{} = actor, id: id} = params) do
Logger.debug("Federating #{id} to #{inbox}")
uri = URI.parse(inbox)
case FedSockets.get_or_create_fed_socket(inbox) do
{:ok, fedsocket} ->
Logger.debug("publishing via fedsockets - #{inspect(inbox)}")
FedSockets.publish(fedsocket, json)
_ ->
Logger.debug("publishing via http - #{inspect(inbox)}")
http_publish(inbox, actor, json, params)
end
end
def publish_one(%{actor_id: actor_id} = params) do
actor = User.get_cached_by_id(actor_id)
params
|> Map.delete(:actor_id)
|> Map.put(:actor, actor)
|> publish_one()
end
defp http_publish(inbox, actor, json, params) do
uri = %{path: path} = URI.parse(inbox)
digest = "SHA-256=" <> (:crypto.hash(:sha256, json) |> Base.encode64())
date = Pleroma.Signature.signed_date()
signature =
Pleroma.Signature.sign(actor, %{
"(request-target)": "post #{uri.path}",
"(request-target)": "post #{path}",
host: signature_host(uri),
"content-length": byte_size(json),
digest: digest,
@ -89,15 +110,6 @@ defmodule Pleroma.Web.ActivityPub.Publisher do
end
end
def publish_one(%{actor_id: actor_id} = params) do
actor = User.get_cached_by_id(actor_id)
params
|> Map.delete(:actor_id)
|> Map.put(:actor, actor)
|> publish_one()
end
defp signature_host(%URI{port: port, scheme: scheme, host: host}) do
if port == URI.default_port(scheme) do
host

2
lib/pleroma/web/activity_pub/transmogrifier.ex
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@ -1000,7 +1000,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
def upgrade_user_from_ap_id(ap_id) do
with %User{local: false} = user <- User.get_cached_by_ap_id(ap_id),
{:ok, data} <- ActivityPub.fetch_and_prepare_user_from_ap_id(ap_id),
{:ok, data} <- ActivityPub.fetch_and_prepare_user_from_ap_id(ap_id, force_http: true),
{:ok, user} <- update_user(user, data) do
TransmogrifierWorker.enqueue("user_upgrade", %{"user_id" => user.id})
{:ok, user}

185
lib/pleroma/web/fed_sockets/fed_registry.ex Normal file
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@ -0,0 +1,185 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.FedSockets.FedRegistry do
@moduledoc """
The FedRegistry stores the active FedSockets for quick retrieval.
The storage and retrieval portion of the FedRegistry is done in process through
elixir's `Registry` module for speed and its ability to monitor for terminated processes.
Dropped connections will be caught by `Registry` and deleted. Since the next
message will initiate a new connection there is no reason to try and reconnect at that point.
Normally outside modules should have no need to call or use the FedRegistry themselves.
"""
alias Pleroma.Web.FedSockets.FedSocket
alias Pleroma.Web.FedSockets.SocketInfo
require Logger
@default_rejection_duration 15 * 60 * 1000
@rejections :fed_socket_rejections
@doc """
Retrieves a FedSocket from the Registry given it's origin.
The origin is expected to be a string identifying the endpoint "example.com" or "example2.com:8080"
Will return:
* {:ok, fed_socket} for working FedSockets
* {:error, :rejected} for origins that have been tried and refused within the rejection duration interval
* {:error, some_reason} usually :missing for unknown origins
"""
def get_fed_socket(origin) do
case get_registry_data(origin) do
{:error, reason} ->
{:error, reason}
{:ok, %{state: :connected} = socket_info} ->
{:ok, socket_info}
end
end
@doc """
Adds a connected FedSocket to the Registry.
Always returns {:ok, fed_socket}
"""
def add_fed_socket(origin, pid \\ nil) do
origin
|> SocketInfo.build(pid)
|> SocketInfo.connect()
|> add_socket_info
end
defp add_socket_info(%{origin: origin, state: :connected} = socket_info) do
case Registry.register(FedSockets.Registry, origin, socket_info) do
{:ok, _owner} ->
clear_prior_rejection(origin)
Logger.debug("fedsocket added: #{inspect(origin)}")
{:ok, socket_info}
{:error, {:already_registered, _pid}} ->
FedSocket.close(socket_info)
existing_socket_info = Registry.lookup(FedSockets.Registry, origin)
{:ok, existing_socket_info}
_ ->
{:error, :error_adding_socket}
end
end
@doc """
Mark this origin as having rejected a connection attempt.
This will keep it from getting additional connection attempts
for a period of time specified in the config.
Always returns {:ok, new_reg_data}
"""
def set_host_rejected(uri) do
new_reg_data =
uri
|> SocketInfo.origin()
|> get_or_create_registry_data()
|> set_to_rejected()
|> save_registry_data()
{:ok, new_reg_data}
end
@doc """
Retrieves the FedRegistryData from the Registry given it's origin.
The origin is expected to be a string identifying the endpoint "example.com" or "example2.com:8080"
Will return:
* {:ok, fed_registry_data} for known origins
* {:error, :missing} for uniknown origins
* {:error, :cache_error} indicating some low level runtime issues
"""
def get_registry_data(origin) do
case Registry.lookup(FedSockets.Registry, origin) do
[] ->
if is_rejected?(origin) do
Logger.debug("previously rejected fedsocket requested")
{:error, :rejected}
else
{:error, :missing}
end
[{_pid, %{state: :connected} = socket_info}] ->
{:ok, socket_info}
_ ->
{:error, :cache_error}
end
end
@doc """
Retrieves a map of all sockets from the Registry. The keys are the origins and the values are the corresponding SocketInfo
"""
def list_all do
(list_all_connected() ++ list_all_rejected())
|> Enum.into(%{})
end
defp list_all_connected do
FedSockets.Registry
|> Registry.select([{{:"$1", :_, :"$3"}, [], [{{:"$1", :"$3"}}]}])
end
defp list_all_rejected do
{:ok, keys} = Cachex.keys(@rejections)
{:ok, registry_data} =
Cachex.execute(@rejections, fn worker ->
Enum.map(keys, fn k -> {k, Cachex.get!(worker, k)} end)
end)
registry_data
end
defp clear_prior_rejection(origin),
do: Cachex.del(@rejections, origin)
defp is_rejected?(origin) do
case Cachex.get(@rejections, origin) do
{:ok, nil} ->
false
{:ok, _} ->
true
end
end
defp get_or_create_registry_data(origin) do
case get_registry_data(origin) do
{:error, :missing} ->
%SocketInfo{origin: origin}
{:ok, socket_info} ->
socket_info
end
end
defp save_registry_data(%SocketInfo{origin: origin, state: :connected} = socket_info) do
{:ok, true} = Registry.update_value(FedSockets.Registry, origin, fn _ -> socket_info end)
socket_info
end
defp save_registry_data(%SocketInfo{origin: origin, state: :rejected} = socket_info) do
rejection_expiration =
Pleroma.Config.get([:fed_sockets, :rejection_duration], @default_rejection_duration)
{:ok, true} = Cachex.put(@rejections, origin, socket_info, ttl: rejection_expiration)
socket_info
end
defp set_to_rejected(%SocketInfo{} = socket_info),
do: %SocketInfo{socket_info | state: :rejected}
end

137
lib/pleroma/web/fed_sockets/fed_socket.ex Normal file
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@ -0,0 +1,137 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.FedSockets.FedSocket do
@moduledoc """
The FedSocket module abstracts the actions to be taken taken on connections regardless of
whether the connection started as inbound or outbound.
Normally outside modules will have no need to call the FedSocket module directly.
"""
alias Pleroma.Object
alias Pleroma.Object.Containment
alias Pleroma.User
alias Pleroma.Web.ActivityPub.ObjectView
alias Pleroma.Web.ActivityPub.UserView
alias Pleroma.Web.ActivityPub.Visibility
alias Pleroma.Web.FedSockets.FetchRegistry
alias Pleroma.Web.FedSockets.IngesterWorker
alias Pleroma.Web.FedSockets.OutgoingHandler
alias Pleroma.Web.FedSockets.SocketInfo
require Logger
@shake "61dd18f7-f1e6-49a4-939a-a749fcdc1103"
def connect_to_host(uri) do
case OutgoingHandler.start_link(uri) do
{:ok, pid} ->
{:ok, pid}
error ->
{:error, error}
end
end
def close(%SocketInfo{pid: socket_pid}),
do: Process.send(socket_pid, :close, [])
def publish(%SocketInfo{pid: socket_pid}, json) do
%{action: :publish, data: json}
|> Jason.encode!()
|> send_packet(socket_pid)
end
def fetch(%SocketInfo{pid: socket_pid}, id) do
fetch_uuid = FetchRegistry.register_fetch(id)
%{action: :fetch, data: id, uuid: fetch_uuid}
|> Jason.encode!()
|> send_packet(socket_pid)
wait_for_fetch_to_return(fetch_uuid, 0)
end
def receive_package(%SocketInfo{} = fed_socket, json) do
json
|> Jason.decode!()
|> process_package(fed_socket)
end
defp wait_for_fetch_to_return(uuid, cntr) do
case FetchRegistry.check_fetch(uuid) do
{:error, :waiting} ->
Process.sleep(:math.pow(cntr, 3) |> Kernel.trunc())
wait_for_fetch_to_return(uuid, cntr + 1)
{:error, :missing} ->
Logger.error("FedSocket fetch timed out - #{inspect(uuid)}")
{:error, :timeout}
{:ok, _fr} ->
FetchRegistry.pop_fetch(uuid)
end
end
defp process_package(%{"action" => "publish", "data" => data}, %{origin: origin} = _fed_socket) do
if Containment.contain_origin(origin, data) do
IngesterWorker.enqueue("ingest", %{"object" => data})
end
{:reply, %{"action" => "publish_reply", "status" => "processed"}}
end
defp process_package(%{"action" => "fetch_reply", "uuid" => uuid, "data" => data}, _fed_socket) do
FetchRegistry.register_fetch_received(uuid, data)
{:noreply, nil}
end
defp process_package(%{"action" => "fetch", "uuid" => uuid, "data" => ap_id}, _fed_socket) do
{:ok, data} = render_fetched_data(ap_id, uuid)
{:reply, data}
end
defp process_package(%{"action" => "publish_reply"}, _fed_socket) do
{:noreply, nil}
end
defp process_package(other, _fed_socket) do
Logger.warn("unknown json packages received #{inspect(other)}")
{:noreply, nil}
end
defp render_fetched_data(ap_id, uuid) do
{:ok,
%{
"action" => "fetch_reply",
"status" => "processed",
"uuid" => uuid,
"data" => represent_item(ap_id)
}}
end
defp represent_item(ap_id) do
case User.get_by_ap_id(ap_id) do
nil ->
object = Object.get_cached_by_ap_id(ap_id)
if Visibility.is_public?(object) do
Phoenix.View.render_to_string(ObjectView, "object.json", object: object)
else
nil
end
user ->
Phoenix.View.render_to_string(UserView, "user.json", user: user)
end
end
defp send_packet(data, socket_pid) do
Process.send(socket_pid, {:send, data}, [])
end
def shake, do: @shake
end

182
lib/pleroma/web/fed_sockets/fed_sockets.ex Normal file
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@ -0,0 +1,182 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.FedSockets do
@moduledoc """
This documents the FedSockets framework. A framework for federating
ActivityPub objects between servers via persistant WebSocket connections.
FedSockets allow servers to authenticate on first contact and maintain that
connection, eliminating the need to authenticate every time data needs to be shared.
## Protocol
FedSockets currently support 2 types of data transfer:
* `publish` method which doesn't require a response
* `fetch` method requires a response be sent
### Publish
The publish operation sends a json encoded map of the shape:
%{action: :publish, data: json}
and accepts (but does not require) a reply of form:
%{"action" => "publish_reply"}
The outgoing params represent
* data: ActivityPub object encoded into json
### Fetch
The fetch operation sends a json encoded map of the shape:
%{action: :fetch, data: id, uuid: fetch_uuid}
and requires a reply of form:
%{"action" => "fetch_reply", "uuid" => uuid, "data" => data}
The outgoing params represent
* id: an ActivityPub object URI
* uuid: a unique uuid generated by the sender
The reply params represent
* data: an ActivityPub object encoded into json
* uuid: the uuid sent along with the fetch request
## Examples
Clients of FedSocket transfers shouldn't need to use any of the functions outside of this module.
A typical publish operation can be performed through the following code, and a fetch operation in a similar manner.
case FedSockets.get_or_create_fed_socket(inbox) do
{:ok, fedsocket} ->
FedSockets.publish(fedsocket, json)
_ ->
alternative_publish(inbox, actor, json, params)
end
## Configuration
FedSockets have the following config settings
config :pleroma, :fed_sockets,
enabled: true,
ping_interval: :timer.seconds(15),
connection_duration: :timer.hours(1),
rejection_duration: :timer.hours(1),
fed_socket_fetches: [
default: 12_000,
interval: 3_000,
lazy: false
]
* enabled - turn FedSockets on or off with this flag. Can be toggled at runtime.
* connection_duration - How long a FedSocket can sit idle before it's culled.
* rejection_duration - After failing to make a FedSocket connection a host will be excluded
from further connections for this amount of time
* fed_socket_fetches - Use these parameters to pass options to the Cachex queue backing the FetchRegistry
* fed_socket_rejections - Use these parameters to pass options to the Cachex queue backing the FedRegistry
Cachex options are
* default: the minimum amount of time a fetch can wait before it times out.
* interval: the interval between checks for timed out entries. This plus the default represent the maximum time allowed
* lazy: leave at false for consistant and fast lookups, set to true for stricter timeout enforcement
"""
require Logger
alias Pleroma.Web.FedSockets.FedRegistry
alias Pleroma.Web.FedSockets.FedSocket
alias Pleroma.Web.FedSockets.SocketInfo
@doc """
returns a FedSocket for the given origin. Will reuse an existing one or create a new one.
address is expected to be a fully formed URL such as:
"http://www.example.com" or "http://www.example.com:8080"
It can and usually does include additional path parameters,
but these are ignored as the FedSockets are organized by host and port info alone.
"""
def get_or_create_fed_socket(address) do
with {:cache, {:error, :missing}} <- {:cache, get_fed_socket(address)},
{:connect, {:ok, _pid}} <- {:connect, FedSocket.connect_to_host(address)},
{:cache, {:ok, fed_socket}} <- {:cache, get_fed_socket(address)} do
Logger.debug("fedsocket created for - #{inspect(address)}")
{:ok, fed_socket}
else
{:cache, {:ok, socket}} ->
Logger.debug("fedsocket found in cache - #{inspect(address)}")
{:ok, socket}
{:connect, {:error, _host}} ->
Logger.debug("set host rejected for - #{inspect(address)}")
FedRegistry.set_host_rejected(address)
{:error, :rejected}
{_, {:error, :disabled}} ->
{:error, :disabled}
{_, {:error, reason}} ->
Logger.warn("get_or_create_fed_socket error - #{inspect(reason)}")
{:error, reason}
end
end
@doc """
returns a FedSocket for the given origin. Will not create a new FedSocket if one does not exist.
address is expected to be a fully formed URL such as:
"http://www.example.com" or "http://www.example.com:8080"
"""
def get_fed_socket(address) do
origin = SocketInfo.origin(address)
with {:config, true} <- {:config, Pleroma.Config.get([:fed_sockets, :enabled], false)},
{:ok, socket} <- FedRegistry.get_fed_socket(origin) do
{:ok, socket}
else
{:config, _} ->
{:error, :disabled}
{:error, :rejected} ->
Logger.debug("FedSocket previously rejected - #{inspect(origin)}")
{:error, :rejected}
{:error, reason} ->
{:error, reason}
end
end
@doc """
Sends the supplied data via the publish protocol.
It will not block waiting for a reply.
Returns :ok but this is not an indication of a successful transfer.
the data is expected to be JSON encoded binary data.
"""
def publish(%SocketInfo{} = fed_socket, json) do
FedSocket.publish(fed_socket, json)
end
@doc """
Sends the supplied data via the fetch protocol.
It will block waiting for a reply or timeout.
Returns {:ok, object} where object is the requested object (or nil)
{:error, :timeout} in the event the message was not responded to
the id is expected to be the URI of an ActivityPub object.
"""
def fetch(%SocketInfo{} = fed_socket, id) do
FedSocket.fetch(fed_socket, id)
end
@doc """
Disconnect all and restart FedSockets.
This is mainly used in development and testing but could be useful in production.
"""
def reset do
FedRegistry
|> Process.whereis()
|> Process.exit(:testing)
end
def uri_for_origin(origin),
do: "ws://#{origin}/api/fedsocket/v1"
end

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.FedSockets.FetchRegistry do
@moduledoc """
The FetchRegistry acts as a broker for fetch requests and return values.
This allows calling processes to block while waiting for a reply.
It doesn't impose it's own process instead using `Cachex` to handle fetches in process, allowing
multi threaded processes to avoid bottlenecking.
Normally outside modules will have no need to call or use the FetchRegistry themselves.
The `Cachex` parameters can be controlled from the config. Since exact timeout intervals
aren't necessary the following settings are used by default:
config :pleroma, :fed_sockets,
fed_socket_fetches: [
default: 12_000,
interval: 3_000,
lazy: false
]
"""
defmodule FetchRegistryData do
defstruct uuid: nil,
sent_json: nil,
received_json: nil,
sent_at: nil,
received_at: nil
end
alias Ecto.UUID
require Logger
@fetches :fed_socket_fetches
@doc """
Registers a json request wth the FetchRegistry and returns the identifying UUID.
"""
def register_fetch(json) do
%FetchRegistryData{uuid: uuid} =
json
|> new_registry_data
|> save_registry_data
uuid
end
@doc """
Reports on the status of a Fetch given the identifying UUID.
Will return
* {:ok, fetched_object} if a fetch has completed
* {:error, :waiting} if a fetch is still pending
* {:error, other_error} usually :missing to indicate a fetch that has timed out
"""
def check_fetch(uuid) do
case get_registry_data(uuid) do
{:ok, %FetchRegistryData{received_at: nil}} ->
{:error, :waiting}
{:ok, %FetchRegistryData{} = reg_data} ->
{:ok, reg_data}
e ->
e
end
end
@doc """
Retrieves the response to a fetch given the identifying UUID.
The completed fetch will be deleted from the FetchRegistry
Will return
* {:ok, fetched_object} if a fetch has completed
* {:error, :waiting} if a fetch is still pending
* {:error, other_error} usually :missing to indicate a fetch that has timed out
"""
def pop_fetch(uuid) do
case check_fetch(uuid) do
{:ok, %FetchRegistryData{received_json: received_json}} ->
delete_registry_data(uuid)
{:ok, received_json}
e ->
e
end
end
@doc """
This is called to register a fetch has returned.
It expects the result data along with the UUID that was sent in the request
Will return the fetched object or :error
"""
def register_fetch_received(uuid, data) do
case get_registry_data(uuid) do
{:ok, %FetchRegistryData{received_at: nil} = reg_data} ->
reg_data
|> set_fetch_received(data)
|> save_registry_data()
{:ok, %FetchRegistryData{} = reg_data} ->
Logger.warn("tried to add fetched data twice - #{uuid}")
reg_data
{:error, _} ->
Logger.warn("Error adding fetch to registry - #{uuid}")
:error
end
end
defp new_registry_data(json) do
%FetchRegistryData{
uuid: UUID.generate(),
sent_json: json,
sent_at: :erlang.monotonic_time(:millisecond)
}
end
defp get_registry_data(origin) do
case Cachex.get(@fetches, origin) do
{:ok, nil} ->
{:error, :missing}
{:ok, reg_data} ->
{:ok, reg_data}
_ ->
{:error, :cache_error}
end
end
defp set_fetch_received(%FetchRegistryData{} = reg_data, data),
do: %FetchRegistryData{
reg_data
| received_at: :erlang.monotonic_time(:millisecond),
received_json: data
}
defp save_registry_data(%FetchRegistryData{uuid: uuid} = reg_data) do
{:ok, true} = Cachex.put(@fetches, uuid, reg_data)
reg_data
end
defp delete_registry_data(origin),
do: {:ok, true} = Cachex.del(@fetches, origin)
end

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.FedSockets.IncomingHandler do
require Logger
alias Pleroma.Web.FedSockets.FedRegistry
alias Pleroma.Web.FedSockets.FedSocket
alias Pleroma.Web.FedSockets.SocketInfo
import HTTPSignatures, only: [validate_conn: 1, split_signature: 1]
@behaviour :cowboy_websocket
def init(req, state) do
shake = FedSocket.shake()
with true <- Pleroma.Config.get([:fed_sockets, :enabled]),
sec_protocol <- :cowboy_req.header("sec-websocket-protocol", req, nil),
headers = %{"(request-target)" => ^shake} <- :cowboy_req.headers(req),
true <- validate_conn(%{req_headers: headers}),
%{"keyId" => origin} <- split_signature(headers["signature"]) do
req =
if is_nil(sec_protocol) do
req
else
:cowboy_req.set_resp_header("sec-websocket-protocol", sec_protocol, req)
end
{:cowboy_websocket, req, %{origin: origin}, %{}}
else
_ ->
{:ok, req, state}
end
end
def websocket_init(%{origin: origin}) do
case FedRegistry.add_fed_socket(origin) do
{:ok, socket_info} ->
{:ok, socket_info}
e ->
Logger.error("FedSocket websocket_init failed - #{inspect(e)}")
{:error, inspect(e)}
end
end
# Use the ping to check if the connection should be expired
def websocket_handle(:ping, socket_info) do
if SocketInfo.expired?(socket_info) do
{:stop, socket_info}
else
{:ok, socket_info, :hibernate}
end
end
def websocket_handle({:text, data}, socket_info) do
socket_info = SocketInfo.touch(socket_info)
case FedSocket.receive_package(socket_info, data) do
{:noreply, _} ->
{:ok, socket_info}
{:reply, reply} ->
{:reply, {:text, Jason.encode!(reply)}, socket_info}
{:error, reason} ->
Logger.error("incoming error - receive_package: #{inspect(reason)}")
{:ok, socket_info}
end
end
def websocket_info({:send, message}, socket_info) do
socket_info = SocketInfo.touch(socket_info)
{:reply, {:text, message}, socket_info}
end
def websocket_info(:close, state) do
{:stop, state}
end
def websocket_info(message, state) do
Logger.debug("#{__MODULE__} unknown message #{inspect(message)}")
{:ok, state}
end
end

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.FedSockets.IngesterWorker do
use Pleroma.Workers.WorkerHelper, queue: "ingestion_queue"
require Logger
alias Pleroma.Web.Federator
@impl Oban.Worker
def perform(%Job{args: %{"op" => "ingest", "object" => ingestee}}) do
try do
ingestee
|> Jason.decode!()
|> do_ingestion()
rescue
e ->
Logger.error("IngesterWorker error - #{inspect(e)}")
e
end
end
defp do_ingestion(params) do
case Federator.incoming_ap_doc(params) do
{:error, reason} ->
{:error, reason}
{:ok, object} ->
{:ok, object}
end
end
end

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.FedSockets.OutgoingHandler do
use GenServer
require Logger
alias Pleroma.Web.ActivityPub.InternalFetchActor
alias Pleroma.Web.FedSockets
alias Pleroma.Web.FedSockets.FedRegistry
alias Pleroma.Web.FedSockets.FedSocket
alias Pleroma.Web.FedSockets.SocketInfo
def start_link(uri) do
GenServer.start_link(__MODULE__, %{uri: uri})
end
def init(%{uri: uri}) do
case initiate_connection(uri) do
{:ok, ws_origin, conn_pid} ->
FedRegistry.add_fed_socket(ws_origin, conn_pid)
{:error, reason} ->
Logger.debug("Outgoing connection failed - #{inspect(reason)}")
:ignore
end
end
def handle_info({:gun_ws, conn_pid, _ref, {:text, data}}, socket_info) do
socket_info = SocketInfo.touch(socket_info)
case FedSocket.receive_package(socket_info, data) do
{:noreply, _} ->
{:noreply, socket_info}
{:reply, reply} ->
:gun.ws_send(conn_pid, {:text, Jason.encode!(reply)})
{:noreply, socket_info}
{:error, reason} ->
Logger.error("incoming error - receive_package: #{inspect(reason)}")
{:noreply, socket_info}
end
end
def handle_info(:close, state) do
Logger.debug("Sending close frame !!!!!!!")
{:close, state}
end
def handle_info({:gun_down, _pid, _prot, :closed, _}, state) do
{:stop, :normal, state}
end
def handle_info({:send, data}, %{conn_pid: conn_pid} = socket_info) do
socket_info = SocketInfo.touch(socket_info)
:gun.ws_send(conn_pid, {:text, data})
{:noreply, socket_info}
end
def handle_info({:gun_ws, _, _, :pong}, state) do
{:noreply, state, :hibernate}
end
def handle_info(msg, state) do
Logger.debug("#{__MODULE__} unhandled event #{inspect(msg)}")
{:noreply, state}
end
def terminate(reason, state) do
Logger.debug(
"#{__MODULE__} terminating outgoing connection for #{inspect(state)} for #{inspect(reason)}"
)
{:ok, state}
end
def initiate_connection(uri) do
ws_uri =
uri
|> SocketInfo.origin()
|> FedSockets.uri_for_origin()
%{host: host, port: port, path: path} = URI.parse(ws_uri)
with {:ok, conn_pid} <- :gun.open(to_charlist(host), port),
{:ok, _} <- :gun.await_up(conn_pid),
reference <- :gun.get(conn_pid, to_charlist(path)),
{:response, :fin, 204, _} <- :gun.await(conn_pid, reference),
headers <- build_headers(uri),
ref <- :gun.ws_upgrade(conn_pid, to_charlist(path), headers, %{silence_pings: false}) do
receive do
{:gun_upgrade, ^conn_pid, ^ref, [<<"websocket">>], _} ->
{:ok, ws_uri, conn_pid}
after
15_000 ->
Logger.debug("Fedsocket timeout connecting to #{inspect(uri)}")
{:error, :timeout}
end
else
{:response, :nofin, 404, _} ->
{:error, :fedsockets_not_supported}
e ->
Logger.debug("Fedsocket error connecting to #{inspect(uri)}")
{:error, e}
end
end
defp build_headers(uri) do
host_for_sig = uri |> URI.parse() |> host_signature()
shake = FedSocket.shake()
digest = "SHA-256=" <> (:crypto.hash(:sha256, shake) |> Base.encode64())
date = Pleroma.Signature.signed_date()
shake_size = byte_size(shake)
signature_opts = %{
"(request-target)": shake,
"content-length": to_charlist("#{shake_size}"),
date: date,
digest: digest,
host: host_for_sig
}
signature = Pleroma.Signature.sign(InternalFetchActor.get_actor(), signature_opts)
[
{'signature', to_charlist(signature)},
{'date', date},
{'digest', to_charlist(digest)},
{'content-length', to_charlist("#{shake_size}")},
{to_charlist("(request-target)"), to_charlist(shake)}
]
end
defp host_signature(%{host: host, scheme: scheme, port: port}) do
if port == URI.default_port(scheme) do
host
else
"#{host}:#{port}"
end
end
end

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.FedSockets.SocketInfo do
defstruct origin: nil,
pid: nil,
conn_pid: nil,
state: :default,
connected_until: nil
alias Pleroma.Web.FedSockets.SocketInfo
@default_connection_duration 15 * 60 * 1000
def build(uri, conn_pid \\ nil) do
uri
|> build_origin()
|> build_pids(conn_pid)
|> touch()
end
def touch(%SocketInfo{} = socket_info),
do: %{socket_info | connected_until: new_ttl()}
def connect(%SocketInfo{} = socket_info),
do: %{socket_info | state: :connected}
def expired?(%{connected_until: connected_until}),
do: connected_until < :erlang.monotonic_time(:millisecond)
def origin(uri),
do: build_origin(uri).origin
defp build_pids(socket_info, conn_pid),
do: struct(socket_info, pid: self(), conn_pid: conn_pid)
defp build_origin(uri) when is_binary(uri),
do: uri |> URI.parse() |> build_origin
defp build_origin(%{host: host, port: nil, scheme: scheme}),
do: build_origin(%{host: host, port: URI.default_port(scheme)})
defp build_origin(%{host: host, port: port}),
do: %SocketInfo{origin: "#{host}:#{port}"}
defp new_ttl do
connection_duration =
Pleroma.Config.get([:fed_sockets, :connection_duration], @default_connection_duration)
:erlang.monotonic_time(:millisecond) + connection_duration
end
end

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.FedSockets.Supervisor do
use Supervisor
import Cachex.Spec
def start_link(opts) do
Supervisor.start_link(__MODULE__, opts, name: __MODULE__)
end
def init(args) do
children = [
build_cache(:fed_socket_fetches, args),
build_cache(:fed_socket_rejections, args),
{Registry, keys: :unique, name: FedSockets.Registry, meta: [rejected: %{}]}
]
opts = [strategy: :one_for_all, name: Pleroma.Web.Streamer.Supervisor]
Supervisor.init(children, opts)
end
defp build_cache(name, args) do
opts = get_opts(name, args)
%{
id: String.to_atom("#{name}_cache"),
start: {Cachex, :start_link, [name, opts]},
type: :worker
}
end
defp get_opts(cache_name, args)
when cache_name in [:fed_socket_fetches, :fed_socket_rejections] do
default = get_opts_or_config(args, cache_name, :default, 15_000)
interval = get_opts_or_config(args, cache_name, :interval, 3_000)
lazy = get_opts_or_config(args, cache_name, :lazy, false)
[expiration: expiration(default: default, interval: interval, lazy: lazy)]
end
defp get_opts(name, args) do
Keyword.get(args, name, [])
end
defp get_opts_or_config(args, name, key, default) do
args
|> Keyword.get(name, [])
|> Keyword.get(key)
|> case do
nil ->
Pleroma.Config.get([:fed_sockets, name, key], default)
value ->
value
end
end
end

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"unicode_util_compat": {:hex, :unicode_util_compat, "0.4.1", "d869e4c68901dd9531385bb0c8c40444ebf624e60b6962d95952775cac5e90cd", [:rebar3], [], "hexpm", "1d1848c40487cdb0b30e8ed975e34e025860c02e419cb615d255849f3427439d"},
"unsafe": {:hex, :unsafe, "1.0.1", "a27e1874f72ee49312e0a9ec2e0b27924214a05e3ddac90e91727bc76f8613d8", [:mix], [], "hexpm", "6c7729a2d214806450d29766abc2afaa7a2cbecf415be64f36a6691afebb50e5"},
"web_push_encryption": {:hex, :web_push_encryption, "0.3.0", "598b5135e696fd1404dc8d0d7c0fa2c027244a4e5d5e5a98ba267f14fdeaabc8", [:mix], [{:httpoison, "~> 1.0", [hex: :httpoison, repo: "hexpm", optional: false]}, {:jose, "~> 1.8", [hex: :jose, repo: "hexpm", optional: false]}], "hexpm", "f10bdd1afe527ede694749fb77a2f22f146a51b054c7fa541c9fd920fba7c875"},
"websocket_client": {:git, "https://github.com/jeremyong/websocket_client.git", "9a6f65d05ebf2725d62fb19262b21f1805a59fbf", []},
"websocket_client": {:git, "https://github.com/jeremyong/websocket_client.git", "9a6f65d05ebf2725d62fb19262b21f1805a59fbf", []}
}

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.FedSockets.FedRegistryTest do
use ExUnit.Case
alias Pleroma.Web.FedSockets
alias Pleroma.Web.FedSockets.FedRegistry
alias Pleroma.Web.FedSockets.SocketInfo
@good_domain "http://good.domain"
@good_domain_origin "good.domain:80"
setup do
start_supervised({Pleroma.Web.FedSockets.Supervisor, []})
build_test_socket(@good_domain)
Process.sleep(10)
:ok
end
describe "add_fed_socket/1 without conflicting sockets" do
test "can be added" do
Process.sleep(10)
assert {:ok, %SocketInfo{origin: origin}} = FedRegistry.get_fed_socket(@good_domain_origin)
assert origin == "good.domain:80"
end
test "multiple origins can be added" do
build_test_socket("http://anothergood.domain")
Process.sleep(10)
assert {:ok, %SocketInfo{origin: origin_1}} =
FedRegistry.get_fed_socket(@good_domain_origin)
assert {:ok, %SocketInfo{origin: origin_2}} =
FedRegistry.get_fed_socket("anothergood.domain:80")
assert origin_1 == "good.domain:80"
assert origin_2 == "anothergood.domain:80"
assert FedRegistry.list_all() |> Enum.count() == 2
end
end
describe "add_fed_socket/1 when duplicate sockets conflict" do
setup do
build_test_socket(@good_domain)
build_test_socket(@good_domain)
Process.sleep(10)
:ok
end
test "will be ignored" do
assert {:ok, %SocketInfo{origin: origin, pid: pid_one}} =
FedRegistry.get_fed_socket(@good_domain_origin)
assert origin == "good.domain:80"
assert FedRegistry.list_all() |> Enum.count() == 1
end
test "the newer process will be closed" do
pid_two = build_test_socket(@good_domain)
assert {:ok, %SocketInfo{origin: origin, pid: pid_one}} =
FedRegistry.get_fed_socket(@good_domain_origin)
assert origin == "good.domain:80"
Process.sleep(10)
refute Process.alive?(pid_two)
assert FedRegistry.list_all() |> Enum.count() == 1
end
end
describe "get_fed_socket/1" do
test "returns missing for unknown hosts" do
assert {:error, :missing} = FedRegistry.get_fed_socket("not_a_dmoain")
end
test "returns rejected for hosts previously rejected" do
"rejected.domain:80"
|> FedSockets.uri_for_origin()
|> FedRegistry.set_host_rejected()
assert {:error, :rejected} = FedRegistry.get_fed_socket("rejected.domain:80")
end
test "can retrieve a previously added SocketInfo" do
build_test_socket(@good_domain)
Process.sleep(10)
assert {:ok, %SocketInfo{origin: origin}} = FedRegistry.get_fed_socket(@good_domain_origin)
assert origin == "good.domain:80"
end
test "removes references to SocketInfos when the process crashes" do
assert {:ok, %SocketInfo{origin: origin, pid: pid}} =
FedRegistry.get_fed_socket(@good_domain_origin)
assert origin == "good.domain:80"
Process.exit(pid, :testing)
Process.sleep(100)
assert {:error, :missing} = FedRegistry.get_fed_socket(@good_domain_origin)
end
end
def build_test_socket(uri) do
Kernel.spawn(fn -> fed_socket_almost(uri) end)
end
def fed_socket_almost(origin) do
FedRegistry.add_fed_socket(origin)
receive do
:close ->
:ok
after
5_000 -> :timeout
end
end
end

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.FedSockets.FetchRegistryTest do
use ExUnit.Case
alias Pleroma.Web.FedSockets.FetchRegistry
alias Pleroma.Web.FedSockets.FetchRegistry.FetchRegistryData
@json_message "hello"
@json_reply "hello back"
setup do
start_supervised(
{Pleroma.Web.FedSockets.Supervisor,
[
ping_interval: 8,
connection_duration: 15,
rejection_duration: 5,
fed_socket_fetches: [default: 10, interval: 10]
]}
)
:ok
end
test "fetches can be stored" do
uuid = FetchRegistry.register_fetch(@json_message)
assert {:error, :waiting} = FetchRegistry.check_fetch(uuid)
end
test "fetches can return" do
uuid = FetchRegistry.register_fetch(@json_message)
task = Task.async(fn -> FetchRegistry.register_fetch_received(uuid, @json_reply) end)
assert {:error, :waiting} = FetchRegistry.check_fetch(uuid)
Task.await(task)
assert {:ok, %FetchRegistryData{received_json: received_json}} =
FetchRegistry.check_fetch(uuid)
assert received_json == @json_reply
end
test "fetches are deleted once popped from stack" do
uuid = FetchRegistry.register_fetch(@json_message)
task = Task.async(fn -> FetchRegistry.register_fetch_received(uuid, @json_reply) end)
Task.await(task)
assert {:ok, %FetchRegistryData{received_json: received_json}} =
FetchRegistry.check_fetch(uuid)
assert received_json == @json_reply
assert {:ok, @json_reply} = FetchRegistry.pop_fetch(uuid)
assert {:error, :missing} = FetchRegistry.check_fetch(uuid)
end
test "fetches can time out" do
uuid = FetchRegistry.register_fetch(@json_message)
assert {:error, :waiting} = FetchRegistry.check_fetch(uuid)
Process.sleep(500)
assert {:error, :missing} = FetchRegistry.check_fetch(uuid)
end
end

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# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.FedSockets.SocketInfoTest do
use ExUnit.Case
alias Pleroma.Web.FedSockets
alias Pleroma.Web.FedSockets.SocketInfo
describe "uri_for_origin" do
test "provides the fed_socket URL given the origin information" do
endpoint = "example.com:4000"
assert FedSockets.uri_for_origin(endpoint) =~ "ws://"
assert FedSockets.uri_for_origin(endpoint) =~ endpoint
end
end
describe "origin" do
test "will provide the origin field given a url" do
endpoint = "example.com:4000"
assert SocketInfo.origin("ws://#{endpoint}") == endpoint
assert SocketInfo.origin("http://#{endpoint}") == endpoint
assert SocketInfo.origin("https://#{endpoint}") == endpoint
end
test "will proide the origin field given a uri" do
endpoint = "example.com:4000"
uri = URI.parse("http://#{endpoint}")
assert SocketInfo.origin(uri) == endpoint
end
end
describe "touch" do
test "will update the TTL" do
endpoint = "example.com:4000"
socket = SocketInfo.build("ws://#{endpoint}")
Process.sleep(2)
touched_socket = SocketInfo.touch(socket)
assert socket.connected_until < touched_socket.connected_until
end
end
describe "expired?" do
setup do
start_supervised(
{Pleroma.Web.FedSockets.Supervisor,
[
ping_interval: 8,
connection_duration: 5,
rejection_duration: 5,
fed_socket_rejections: [lazy: true]
]}
)
:ok
end
test "tests if the TTL is exceeded" do
endpoint = "example.com:4000"
socket = SocketInfo.build("ws://#{endpoint}")
refute SocketInfo.expired?(socket)
Process.sleep(10)
assert SocketInfo.expired?(socket)
end
end
describe "creating outgoing connection records" do
test "can be passed a string" do
assert %{conn_pid: :pid, origin: _origin} = SocketInfo.build("example.com:4000", :pid)
end
test "can be passed a URI" do
uri = URI.parse("http://example.com:4000")
assert %{conn_pid: :pid, origin: origin} = SocketInfo.build(uri, :pid)
assert origin =~ "example.com:4000"
end
test "will include the port number" do
assert %{conn_pid: :pid, origin: origin} = SocketInfo.build("http://example.com:4000", :pid)
assert origin =~ ":4000"
end
test "will provide the port if missing" do
assert %{conn_pid: :pid, origin: "example.com:80"} =
SocketInfo.build("http://example.com", :pid)
assert %{conn_pid: :pid, origin: "example.com:443"} =
SocketInfo.build("https://example.com", :pid)
end
end
describe "creating incoming connection records" do
test "can be passed a string" do
assert %{pid: _, origin: _origin} = SocketInfo.build("example.com:4000")
end
test "can be passed a URI" do
uri = URI.parse("example.com:4000")
assert %{pid: _, origin: _origin} = SocketInfo.build(uri)
end
test "will include the port number" do
assert %{pid: _, origin: origin} = SocketInfo.build("http://example.com:4000")
assert origin =~ ":4000"
end
test "will provide the port if missing" do
assert %{pid: _, origin: "example.com:80"} = SocketInfo.build("http://example.com")
assert %{pid: _, origin: "example.com:443"} = SocketInfo.build("https://example.com")
end
end
end