Remove WebSub subscriptions (mastodon#11303)

Author: Gargron

app/models/concerns/account_associations.rb

@@ -30,9 +30,6 @@ module AccountAssociations
     has_many :media_attachments, dependent: :destroy
     has_many :polls, dependent: :destroy
 
-    # PuSH subscriptions
-    has_many :subscriptions, dependent: :destroy
-
     # Report relationships
     has_many :reports, dependent: :destroy, inverse_of: :account
     has_many :targeted_reports, class_name: 'Report', foreign_key: :target_account_id, dependent: :destroy, inverse_of: :target_account

app/models/subscription.rb

@@ -24,7 +24,6 @@ class SuspendAccountService < BaseService
     report_notes
     scheduled_statuses
     status_pins
-    subscriptions
   ).freeze
 
   ASSOCIATIONS_ON_DESTROY = %w(

app/policies/subscription_policy.rb

@@ -5,7 +5,5 @@ class Scheduler::SubscriptionsCleanupScheduler
 
   sidekiq_options unique: :until_executed, retry: 0
 
-  def perform
-    Subscription.expired.in_batches.delete_all
-  end
+  def perform; end
 end

app/services/suspend_account_service.rb

@@ -21,9 +21,6 @@
   user_cleanup_scheduler:
     cron: '<%= Random.rand(0..59) %> <%= Random.rand(4..6) %> * * *'
     class: Scheduler::UserCleanupScheduler
-  subscriptions_cleanup_scheduler:
-    cron: '<%= Random.rand(0..59) %> <%= Random.rand(1..3) %> * * 0'
-    class: Scheduler::SubscriptionsCleanupScheduler
   ip_cleanup_scheduler:
     cron: '<%= Random.rand(0..59) %> <%= Random.rand(3..5) %> * * *'
     class: Scheduler::IpCleanupScheduler

app/workers/scheduler/subscriptions_cleanup_scheduler.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class DropSubscriptions < ActiveRecord::Migration[5.2]
+  def up
+    drop_table :subscriptions
+  end
+
+  def down
+    raise ActiveRecord::IrreversibleMigration
+  end
+end

config/sidekiq.yml

@@ -649,19 +649,6 @@
     t.index ["tag_id", "status_id"], name: "index_statuses_tags_on_tag_id_and_status_id", unique: true
   end
 
-  create_table "subscriptions", force: :cascade do |t|
-    t.string "callback_url", default: "", null: false
-    t.string "secret"
-    t.datetime "expires_at"
-    t.boolean "confirmed", default: false, null: false
-    t.datetime "created_at", null: false
-    t.datetime "updated_at", null: false
-    t.datetime "last_successful_delivery_at"
-    t.string "domain"
-    t.bigint "account_id", null: false
-    t.index ["account_id", "callback_url"], name: "index_subscriptions_on_account_id_and_callback_url", unique: true
-  end
-
   create_table "tags", force: :cascade do |t|
     t.string "name", default: "", null: false
     t.datetime "created_at", null: false
@@ -822,7 +809,6 @@
   add_foreign_key "statuses", "statuses", column: "reblog_of_id", on_delete: :cascade
   add_foreign_key "statuses_tags", "statuses", on_delete: :cascade
   add_foreign_key "statuses_tags", "tags", name: "fk_3081861e21", on_delete: :cascade
-  add_foreign_key "subscriptions", "accounts", name: "fk_9847d1cbb5", on_delete: :cascade
   add_foreign_key "tombstones", "accounts", on_delete: :cascade
   add_foreign_key "user_invite_requests", "users", on_delete: :cascade
   add_foreign_key "users", "accounts", name: "fk_50500f500d", on_delete: :cascade