[#1149] Addressed code review comments (code style, jobs pruning etc.).

lib/pleroma/workers/activity_expiration_worker.ex

@@ -0,0 +1,21 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Workers.ActivityExpirationWorker do
+  # Note: `max_attempts` is intended to be overridden in `new/2` call
+  use Oban.Worker,
+    queue: "activity_expiration",
+    max_attempts: 1
+
+  @impl Oban.Worker
+  def perform(
+        %{
+          "op" => "activity_expiration",
+          "activity_expiration_id" => activity_expiration_id
+        },
+        _job
+      ) do
+    Pleroma.ActivityExpirationWorker.perform(:execute, activity_expiration_id)
+  end
+end

lib/pleroma/workers/background_worker.ex

@@ -8,24 +8,24 @@ defmodule Pleroma.Workers.BackgroundWorker do
   alias Pleroma.Web.ActivityPub.MRF.MediaProxyWarmingPolicy
   alias Pleroma.Web.OAuth.Token.CleanWorker
 
-  # Note: `max_attempts` is intended to be overridden in `new/1` call
+  # Note: `max_attempts` is intended to be overridden in `new/2` call
   use Oban.Worker,
     queue: "background",
     max_attempts: 1
 
   @impl Oban.Worker
   def perform(%{"op" => "fetch_initial_posts", "user_id" => user_id}, _job) do
-    user = User.get_by_id(user_id)
+    user = User.get_cached_by_id(user_id)
     User.perform(:fetch_initial_posts, user)
   end
 
   def perform(%{"op" => "deactivate_user", "user_id" => user_id, "status" => status}, _job) do
-    user = User.get_by_id(user_id)
+    user = User.get_cached_by_id(user_id)
     User.perform(:deactivate_async, user, status)
   end
 
   def perform(%{"op" => "delete_user", "user_id" => user_id}, _job) do
-    user = User.get_by_id(user_id)
+    user = User.get_cached_by_id(user_id)
     User.perform(:delete, user)
   end
 
@@ -37,7 +37,7 @@ defmodule Pleroma.Workers.BackgroundWorker do
         },
         _job
       ) do
-    blocker = User.get_by_id(blocker_id)
+    blocker = User.get_cached_by_id(blocker_id)
     User.perform(:blocks_import, blocker, blocked_identifiers)
   end
 
@@ -49,7 +49,7 @@ defmodule Pleroma.Workers.BackgroundWorker do
         },
         _job
       ) do
-    follower = User.get_by_id(follower_id)
+    follower = User.get_cached_by_id(follower_id)
     User.perform(:follow_import, follower, followed_identifiers)
   end
 
@@ -69,11 +69,4 @@ defmodule Pleroma.Workers.BackgroundWorker do
     activity = Activity.get_by_id(activity_id)
     Pleroma.Web.RichMedia.Helpers.perform(:fetch, activity)
   end
-
-  def perform(
-        %{"op" => "activity_expiration", "activity_expiration_id" => activity_expiration_id},
-        _job
-      ) do
-    Pleroma.ActivityExpirationWorker.perform(:execute, activity_expiration_id)
-  end
 end

lib/pleroma/workers/helper.ex

@@ -1,13 +0,0 @@
-# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
-# SPDX-License-Identifier: AGPL-3.0-only
-
-defmodule Pleroma.Workers.Helper do
-  def worker_args(queue) do
-    if max_attempts = Pleroma.Config.get([:workers, :retries, queue]) do
-      [max_attempts: max_attempts]
-    else
-      []
-    end
-  end
-end

lib/pleroma/workers/mailer_worker.ex

@@ -2,26 +2,25 @@
 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
-defmodule Pleroma.Workers.Mailer do
+defmodule Pleroma.Workers.MailerWorker do
   alias Pleroma.User
 
-  # Note: `max_attempts` is intended to be overridden in `new/1` call
+  # Note: `max_attempts` is intended to be overridden in `new/2` call
   use Oban.Worker,
     queue: "mailer",
     max_attempts: 1
 
   @impl Oban.Worker
   def perform(%{"op" => "email", "encoded_email" => encoded_email, "config" => config}, _job) do
-    email =
-      encoded_email
-      |> Base.decode64!()
-      |> :erlang.binary_to_term()
-
-    Pleroma.Emails.Mailer.deliver(email, config)
+    encoded_email
+    |> Base.decode64!()
+    |> :erlang.binary_to_term()
+    |> Pleroma.Emails.Mailer.deliver(config)
   end
 
   def perform(%{"op" => "digest_email", "user_id" => user_id}, _job) do
-    user = User.get_by_id(user_id)
-    Pleroma.DigestEmailWorker.perform(user)
+    user_id
+    |> User.get_cached_by_id()
+    |> Pleroma.DigestEmailWorker.perform()
   end
 end

lib/pleroma/workers/publisher_worker.ex

@@ -2,15 +2,19 @@
 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
-defmodule Pleroma.Workers.Publisher do
+defmodule Pleroma.Workers.PublisherWorker do
   alias Pleroma.Activity
   alias Pleroma.Web.Federator
 
-  # Note: `max_attempts` is intended to be overridden in `new/1` call
+  # Note: `max_attempts` is intended to be overridden in `new/2` call
   use Oban.Worker,
     queue: "federator_outgoing",
     max_attempts: 1
 
+  def backoff(attempt) when is_integer(attempt) do
+    Pleroma.Workers.WorkerHelper.sidekiq_backoff(attempt, 5)
+  end
+
   @impl Oban.Worker
   def perform(%{"op" => "publish", "activity_id" => activity_id}, _job) do
     activity = Activity.get_by_id(activity_id)

lib/pleroma/workers/receiver_worker.ex

@@ -2,10 +2,10 @@
 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
-defmodule Pleroma.Workers.Receiver do
+defmodule Pleroma.Workers.ReceiverWorker do
   alias Pleroma.Web.Federator
 
-  # Note: `max_attempts` is intended to be overridden in `new/1` call
+  # Note: `max_attempts` is intended to be overridden in `new/2` call
   use Oban.Worker,
     queue: "federator_incoming",
     max_attempts: 1

lib/pleroma/workers/scheduled_activity_worker.ex

@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Workers.ScheduledActivityWorker do
-  # Note: `max_attempts` is intended to be overridden in `new/1` call
+  # Note: `max_attempts` is intended to be overridden in `new/2` call
   use Oban.Worker,
     queue: "scheduled_activities",
     max_attempts: 1

lib/pleroma/workers/subscriber_worker.ex

@@ -2,12 +2,12 @@
 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
-defmodule Pleroma.Workers.Subscriber do
+defmodule Pleroma.Workers.SubscriberWorker do
   alias Pleroma.Repo
   alias Pleroma.Web.Federator
   alias Pleroma.Web.Websub
 
-  # Note: `max_attempts` is intended to be overridden in `new/1` call
+  # Note: `max_attempts` is intended to be overridden in `new/2` call
   use Oban.Worker,
     queue: "federator_outgoing",
     max_attempts: 1

lib/pleroma/workers/transmogrifier_worker.ex

@@ -2,17 +2,17 @@
 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
-defmodule Pleroma.Workers.Transmogrifier do
+defmodule Pleroma.Workers.TransmogrifierWorker do
   alias Pleroma.User
 
-  # Note: `max_attempts` is intended to be overridden in `new/1` call
+  # Note: `max_attempts` is intended to be overridden in `new/2` call
   use Oban.Worker,
     queue: "transmogrifier",
     max_attempts: 1
 
   @impl Oban.Worker
   def perform(%{"op" => "user_upgrade", "user_id" => user_id}, _job) do
-    user = User.get_by_id(user_id)
+    user = User.get_cached_by_id(user_id)
     Pleroma.Web.ActivityPub.Transmogrifier.perform(:user_upgrade, user)
   end
 end

lib/pleroma/workers/web_pusher_worker.ex

@@ -2,11 +2,11 @@
 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
-defmodule Pleroma.Workers.WebPusher do
+defmodule Pleroma.Workers.WebPusherWorker do
   alias Pleroma.Notification
   alias Pleroma.Repo
 
-  # Note: `max_attempts` is intended to be overridden in `new/1` call
+  # Note: `max_attempts` is intended to be overridden in `new/2` call
   use Oban.Worker,
     queue: "web_push",
     max_attempts: 1

lib/pleroma/workers/worker_helper.ex

@@ -0,0 +1,23 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Workers.WorkerHelper do
+  alias Pleroma.Config
+
+  def worker_args(queue) do
+    case Config.get([:workers, :retries, queue]) do
+      nil -> []
+      max_attempts -> [max_attempts: max_attempts]
+    end
+  end
+
+  def sidekiq_backoff(attempt, pow \\ 4, base_backoff \\ 15) do
+    backoff =
+      :math.pow(attempt, pow) +
+        base_backoff +
+        :rand.uniform(2 * base_backoff) * attempt
+
+    trunc(backoff)
+  end
+end