[#534] Configurable outgoing federation reachability timeout.

lib/pleroma/instances.ex

@@ -8,8 +8,20 @@ defmodule Pleroma.Instances do
   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)
+  def reachability_datetime_threshold do
+    federation_reachability_timeout_days =
+      Pleroma.Config.get(:instance)[:federation_reachability_timeout_days] || 90
+
+    if federation_reachability_timeout_days > 0 do
+      NaiveDateTime.add(
+        NaiveDateTime.utc_now(),
+        -federation_reachability_timeout_days * 24 * 3600,
+        :second
+      )
+    else
+      ~N[0000-01-01 00:00:00]
+    end
+  end
 
   def host(url_or_host) when is_binary(url_or_host) do
     if url_or_host =~ ~r/^http/i do

lib/pleroma/instances/instance.ex

@@ -39,7 +39,8 @@ defmodule Pleroma.Instances.Instance do
       Repo.all(
         from(i in Instance,
           where:
-            i.host in ^hosts and i.unreachable_since <= ^Instances.reachability_time_threshold(),
+            i.host in ^hosts and
+              i.unreachable_since <= ^Instances.reachability_datetime_threshold(),
           select: i.host
         )
       )
@@ -51,7 +52,8 @@ defmodule Pleroma.Instances.Instance do
     !Repo.one(
       from(i in Instance,
         where:
-          i.host == ^host(url) and i.unreachable_since <= ^Instances.reachability_time_threshold(),
+          i.host == ^host(url) and
+            i.unreachable_since <= ^Instances.reachability_datetime_threshold(),
         select: true
       )
     )