From f161a92cb1abd981e37367fcd5d315ac14510d12 Mon Sep 17 00:00:00 2001 From: Ivan Tashkinov Date: Wed, 23 Jan 2019 18:37:25 +0300 Subject: [PATCH] [#534] Initial implementation of unreachable federation targets retirement. --- lib/pleroma/instances.ex | 12 ++++ lib/pleroma/instances/instance.ex | 77 ++++++++++++++++++++++ lib/pleroma/web/activity_pub/activity_pub.ex | 39 +++++++---- lib/pleroma/web/salmon/salmon.ex | 13 +++- lib/pleroma/web/websub/websub.ex | 10 ++- .../migrations/20190123125546_create_instances.exs | 16 +++++ 6 files changed, 153 insertions(+), 14 deletions(-) create mode 100644 lib/pleroma/instances.ex create mode 100644 lib/pleroma/instances/instance.ex create mode 100644 priv/repo/migrations/20190123125546_create_instances.exs diff --git a/lib/pleroma/instances.ex b/lib/pleroma/instances.ex new file mode 100644 index 000000000..25b739520 --- /dev/null +++ b/lib/pleroma/instances.ex @@ -0,0 +1,12 @@ +defmodule Pleroma.Instances do + @moduledoc "Instances context." + + @adapter Pleroma.Instances.Instance + + defdelegate reachable?(url), to: @adapter + defdelegate set_reachable(url), to: @adapter + defdelegate set_unreachable(url, unreachable_since \\ nil), to: @adapter + + def reachability_time_threshold, + do: NaiveDateTime.add(NaiveDateTime.utc_now(), -30 * 24 * 3600, :second) +end diff --git a/lib/pleroma/instances/instance.ex b/lib/pleroma/instances/instance.ex new file mode 100644 index 000000000..4507ef6d5 --- /dev/null +++ b/lib/pleroma/instances/instance.ex @@ -0,0 +1,77 @@ +defmodule Pleroma.Instances.Instance do + @moduledoc "Instance." + + alias Pleroma.Instances + alias Pleroma.Instances.Instance + + use Ecto.Schema + + import Ecto.{Query, Changeset} + + alias Pleroma.Repo + + schema "instances" do + field(:host, :string) + field(:unreachable_since, :naive_datetime) + field(:reachability_checked_at, :naive_datetime) + + timestamps() + end + + def update_changeset(struct, params \\ %{}) do + struct + |> cast(params, [:host, :unreachable_since, :reachability_checked_at]) + |> unique_constraint(:host) + end + + def reachable?(url) do + !Repo.one( + from(i in Instance, + where: + i.host == ^host(url) and i.unreachable_since <= ^Instances.reachability_time_threshold(), + select: true + ) + ) + end + + def set_reachable(url) do + Repo.update_all( + from(i in Instance, where: i.host == ^host(url)), + set: [ + unreachable_since: nil, + reachability_checked_at: DateTime.utc_now() + ] + ) + end + + def set_unreachable(url, unreachable_since \\ nil) do + unreachable_since = unreachable_since || DateTime.utc_now() + host = host(url) + existing_record = Repo.get_by(Instance, %{host: host}) + + changes = %{ + unreachable_since: unreachable_since, + reachability_checked_at: NaiveDateTime.utc_now() + } + + if existing_record do + update_changes = + if existing_record.unreachable_since && + NaiveDateTime.compare(existing_record.unreachable_since, unreachable_since) != :gt, + do: Map.delete(changes, :unreachable_since), + else: changes + + {:ok, _instance} = Repo.update(update_changeset(existing_record, update_changes)) + else + {:ok, _instance} = Repo.insert(update_changeset(%Instance{}, Map.put(changes, :host, host))) + end + end + + defp host(url_or_host) do + if url_or_host =~ ~r/^http/i do + URI.parse(url_or_host).host + else + url_or_host + end + end +end diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex index 82fffd324..b14c91c18 100644 --- a/lib/pleroma/web/activity_pub/activity_pub.ex +++ b/lib/pleroma/web/activity_pub/activity_pub.ex @@ -3,7 +3,7 @@ # SPDX-License-Identifier: AGPL-3.0-only defmodule Pleroma.Web.ActivityPub.ActivityPub do - alias Pleroma.{Activity, Repo, Object, Upload, User, Notification} + alias Pleroma.{Activity, Repo, Object, Upload, User, Notification, Instances} alias Pleroma.Web.ActivityPub.{Transmogrifier, MRF} alias Pleroma.Web.WebFinger alias Pleroma.Web.Federator @@ -721,7 +721,15 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do end) end - def publish_one(%{inbox: inbox, json: json, actor: actor, id: id}) do + def publish_one(%{inbox: inbox} = activity) do + if Instances.reachable?(inbox) do + do_publish_one(activity) + else + {:error, :noop} + end + end + + defp do_publish_one(%{inbox: inbox, json: json, actor: actor, id: id}) do Logger.info("Federating #{id} to #{inbox}") host = URI.parse(inbox).host @@ -734,15 +742,24 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do digest: digest }) - @httpoison.post( - inbox, - json, - [ - {"Content-Type", "application/activity+json"}, - {"signature", signature}, - {"digest", digest} - ] - ) + with {:ok, _} <- + result = + @httpoison.post( + inbox, + json, + [ + {"Content-Type", "application/activity+json"}, + {"signature", signature}, + {"digest", digest} + ] + ) do + Instances.set_reachable(inbox) + result + else + e -> + Instances.set_unreachable(inbox) + e + end end # TODO: diff --git a/lib/pleroma/web/salmon/salmon.ex b/lib/pleroma/web/salmon/salmon.ex index e41657da1..0a0b91433 100644 --- a/lib/pleroma/web/salmon/salmon.ex +++ b/lib/pleroma/web/salmon/salmon.ex @@ -6,6 +6,7 @@ defmodule Pleroma.Web.Salmon do @httpoison Application.get_env(:pleroma, :httpoison) use Bitwise + alias Pleroma.Instances alias Pleroma.Web.XML alias Pleroma.Web.OStatus.ActivityRepresenter alias Pleroma.User @@ -167,15 +168,23 @@ defmodule Pleroma.Web.Salmon do do: send_to_user(salmon, feed, poster) defp send_to_user(url, feed, poster) when is_binary(url) do - with {:ok, %{status: code}} <- + with {:reachable, true} <- {:reachable, Instances.reachable?(url)}, + {:ok, %{status: code}} <- poster.( url, feed, [{"Content-Type", "application/magic-envelope+xml"}] ) do + Instances.set_reachable(url) Logger.debug(fn -> "Pushed to #{url}, code #{code}" end) else - e -> Logger.debug(fn -> "Pushing Salmon to #{url} failed, #{inspect(e)}" end) + {:reachable, false} -> + Logger.debug(fn -> "Pushing Salmon to #{url} skipped as marked unreachable)" end) + :noop + + e -> + Instances.set_unreachable(url) + Logger.debug(fn -> "Pushing Salmon to #{url} failed, #{inspect(e)}" end) end end diff --git a/lib/pleroma/web/websub/websub.ex b/lib/pleroma/web/websub/websub.ex index 7ca62c83b..a6bbaef37 100644 --- a/lib/pleroma/web/websub/websub.ex +++ b/lib/pleroma/web/websub/websub.ex @@ -5,6 +5,7 @@ defmodule Pleroma.Web.Websub do alias Ecto.Changeset alias Pleroma.Repo + alias Pleroma.Instances alias Pleroma.Web.Websub.{WebsubServerSubscription, WebsubClientSubscription} alias Pleroma.Web.OStatus.FeedRepresenter alias Pleroma.Web.{XML, Endpoint, OStatus} @@ -267,7 +268,8 @@ defmodule Pleroma.Web.Websub do signature = sign(secret || "", xml) Logger.info(fn -> "Pushing #{topic} to #{callback}" end) - with {:ok, %{status: code}} <- + with {:reachable, true} <- {:reachable, Instances.reachable?(callback)}, + {:ok, %{status: code}} <- @httpoison.post( callback, xml, @@ -276,10 +278,16 @@ defmodule Pleroma.Web.Websub do {"X-Hub-Signature", "sha1=#{signature}"} ] ) do + Instances.set_reachable(callback) Logger.info(fn -> "Pushed to #{callback}, code #{code}" end) {:ok, code} else + {:reachable, false} -> + Logger.debug(fn -> "Pushing to #{callback} skipped as marked unreachable)" end) + {:error, :noop} + e -> + Instances.set_unreachable(callback) Logger.debug(fn -> "Couldn't push to #{callback}, #{inspect(e)}" end) {:error, e} end diff --git a/priv/repo/migrations/20190123125546_create_instances.exs b/priv/repo/migrations/20190123125546_create_instances.exs new file mode 100644 index 000000000..4f5915fba --- /dev/null +++ b/priv/repo/migrations/20190123125546_create_instances.exs @@ -0,0 +1,16 @@ +defmodule Pleroma.Repo.Migrations.CreateInstances do + use Ecto.Migration + + def change do + create table(:instances) do + add :host, :string + add :unreachable_since, :naive_datetime + add :reachability_checked_at, :naive_datetime + + timestamps() + end + + create unique_index(:instances, [:host]) + create index(:instances, [:unreachable_since]) + end +end