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-rw-r--r--app/controllers/admin/instances_controller.rb9
-rw-r--r--app/helpers/admin/action_logs_helper.rb4
-rw-r--r--app/models/admin/action_log_filter.rb1
-rw-r--r--app/policies/instance_policy.rb4
-rw-r--r--app/services/purge_domain_service.rb10
-rw-r--r--app/views/admin/instances/show.html.haml2
-rw-r--r--app/workers/admin/domain_purge_worker.rb9
-rw-r--r--config/locales/en.yml5
-rw-r--r--config/routes.rb2
-rw-r--r--spec/controllers/admin/instances_controller_spec.rb35
-rw-r--r--spec/policies/instance_policy_spec.rb2
-rw-r--r--spec/services/purge_domain_service_spec.rb27
-rw-r--r--spec/workers/admin/domain_purge_worker_spec.rb18
13 files changed, 121 insertions, 7 deletions
diff --git a/app/controllers/admin/instances_controller.rb b/app/controllers/admin/instances_controller.rb
index 748c5de5a..306ec1f53 100644
--- a/app/controllers/admin/instances_controller.rb
+++ b/app/controllers/admin/instances_controller.rb
@@ -14,6 +14,15 @@ module Admin
       authorize :instance, :show?
     end
 
+    def destroy
+      authorize :instance, :destroy?
+
+      Admin::DomainPurgeWorker.perform_async(@instance.domain)
+
+      log_action :destroy, @instance
+      redirect_to admin_instances_path, notice: I18n.t('admin.instances.destroyed_msg', domain: @instance.domain)
+    end
+
     def clear_delivery_errors
       authorize :delivery, :clear_delivery_errors?
 
diff --git a/app/helpers/admin/action_logs_helper.rb b/app/helpers/admin/action_logs_helper.rb
index ae96f7a34..f3aa4be4f 100644
--- a/app/helpers/admin/action_logs_helper.rb
+++ b/app/helpers/admin/action_logs_helper.rb
@@ -31,6 +31,8 @@ module Admin::ActionLogsHelper
       link_to truncate(record.text), edit_admin_announcement_path(record.id)
     when 'IpBlock'
       "#{record.ip}/#{record.ip.prefix} (#{I18n.t("simple_form.labels.ip_block.severities.#{record.severity}")})"
+    when 'Instance'
+      record.domain
     end
   end
 
@@ -54,6 +56,8 @@ module Admin::ActionLogsHelper
       truncate(attributes['text'].is_a?(Array) ? attributes['text'].last : attributes['text'])
     when 'IpBlock'
       "#{attributes['ip']}/#{attributes['ip'].prefix} (#{I18n.t("simple_form.labels.ip_block.severities.#{attributes['severity']}")})"
+    when 'Instance'
+      attributes['domain']
     end
   end
 end
diff --git a/app/models/admin/action_log_filter.rb b/app/models/admin/action_log_filter.rb
index 2af9d7c9c..d1ad46526 100644
--- a/app/models/admin/action_log_filter.rb
+++ b/app/models/admin/action_log_filter.rb
@@ -26,6 +26,7 @@ class Admin::ActionLogFilter
     destroy_domain_allow: { target_type: 'DomainAllow', action: 'destroy' }.freeze,
     destroy_domain_block: { target_type: 'DomainBlock', action: 'destroy' }.freeze,
     destroy_email_domain_block: { target_type: 'EmailDomainBlock', action: 'destroy' }.freeze,
+    destroy_instance: { target_type: 'Instance', action: 'destroy' }.freeze,
     destroy_unavailable_domain: { target_type: 'UnavailableDomain', action: 'destroy' }.freeze,
     destroy_status: { target_type: 'Status', action: 'destroy' }.freeze,
     disable_2fa_user: { target_type: 'User', action: 'disable' }.freeze,
diff --git a/app/policies/instance_policy.rb b/app/policies/instance_policy.rb
index a73823556..801ca162e 100644
--- a/app/policies/instance_policy.rb
+++ b/app/policies/instance_policy.rb
@@ -8,4 +8,8 @@ class InstancePolicy < ApplicationPolicy
   def show?
     admin?
   end
+
+  def destroy?
+    admin?
+  end
 end
diff --git a/app/services/purge_domain_service.rb b/app/services/purge_domain_service.rb
new file mode 100644
index 000000000..e10a8f0c8
--- /dev/null
+++ b/app/services/purge_domain_service.rb
@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+class PurgeDomainService < BaseService
+  def call(domain)
+    Account.remote.where(domain: domain).reorder(nil).find_each do |account|
+      DeleteAccountService.new.call(account, reserve_username: false, skip_side_effects: true)
+    end
+    Instance.refresh
+  end
+end
diff --git a/app/views/admin/instances/show.html.haml b/app/views/admin/instances/show.html.haml
index d6542ac3e..e520bca0c 100644
--- a/app/views/admin/instances/show.html.haml
+++ b/app/views/admin/instances/show.html.haml
@@ -84,3 +84,5 @@
       = link_to t('admin.instances.delivery.stop'), stop_delivery_admin_instance_path(@instance), data: { confirm: t('admin.accounts.are_you_sure'), method: :post }, class: 'button'
     - else
       = link_to t('admin.instances.delivery.restart'), restart_delivery_admin_instance_path(@instance), data: { confirm: t('admin.accounts.are_you_sure'), method: :post }, class: 'button'
+    - unless @instance.delivery_failure_tracker.available? && @instance.accounts_count > 0
+      = link_to t('admin.instances.purge'), admin_instance_path(@instance), data: { confirm: t('admin.instances.confirm_purge'), method: :delete }, class: 'button'
diff --git a/app/workers/admin/domain_purge_worker.rb b/app/workers/admin/domain_purge_worker.rb
new file mode 100644
index 000000000..7cba2c89e
--- /dev/null
+++ b/app/workers/admin/domain_purge_worker.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class Admin::DomainPurgeWorker
+  include Sidekiq::Worker
+
+  def perform(domain)
+    PurgeDomainService.new.call(domain)
+  end
+end
diff --git a/config/locales/en.yml b/config/locales/en.yml
index e9a0aea54..080b20983 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -240,6 +240,7 @@ en:
         destroy_domain_allow: Delete Domain Allow
         destroy_domain_block: Delete Domain Block
         destroy_email_domain_block: Delete E-mail Domain Block
+        destroy_instance: Purge Domain
         destroy_ip_block: Delete IP rule
         destroy_status: Delete Post
         destroy_unavailable_domain: Delete Unavailable Domain
@@ -287,6 +288,7 @@ en:
         destroy_domain_allow_html: "%{name} disallowed federation with domain %{target}"
         destroy_domain_block_html: "%{name} unblocked domain %{target}"
         destroy_email_domain_block_html: "%{name} unblocked e-mail domain %{target}"
+        destroy_instance_html: "%{name} purged domain %{target}"
         destroy_ip_block_html: "%{name} deleted rule for IP %{target}"
         destroy_status_html: "%{name} removed post by %{target}"
         destroy_unavailable_domain_html: "%{name} resumed delivery to domain %{target}"
@@ -465,6 +467,7 @@ en:
       back_to_limited: Limited
       back_to_warning: Warning
       by_domain: Domain
+      confirm_purge: Are you sure you want to permanently delete data from this domain?
       delivery:
         all: All
         clear: Clear delivery errors
@@ -480,6 +483,7 @@ en:
       delivery_available: Delivery is available
       delivery_error_days: Delivery error days
       delivery_error_hint: If delivery is not possible for %{count} days, it will be automatically marked as undeliverable.
+      destroyed_msg: Data from %{domain} is now queued for imminent deletion.
       empty: No domains found.
       known_accounts:
         one: "%{count} known account"
@@ -490,6 +494,7 @@ en:
         title: Moderation
       private_comment: Private comment
       public_comment: Public comment
+      purge: Purge
       title: Federation
       total_blocked_by_us: Blocked by us
       total_followed_by_them: Followed by them
diff --git a/config/routes.rb b/config/routes.rb
index 31b398e2c..b3b80624d 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -214,7 +214,7 @@ Rails.application.routes.draw do
       end
     end
 
-    resources :instances, only: [:index, :show], constraints: { id: /[^\/]+/ } do
+    resources :instances, only: [:index, :show, :destroy], constraints: { id: /[^\/]+/ } do
       member do
         post :clear_delivery_errors
         post :restart_delivery
diff --git a/spec/controllers/admin/instances_controller_spec.rb b/spec/controllers/admin/instances_controller_spec.rb
index 8c0b309f2..53427b874 100644
--- a/spec/controllers/admin/instances_controller_spec.rb
+++ b/spec/controllers/admin/instances_controller_spec.rb
@@ -3,8 +3,14 @@ require 'rails_helper'
 RSpec.describe Admin::InstancesController, type: :controller do
   render_views
 
+  let(:current_user) { Fabricate(:user, admin: true) }
+
+  let!(:account)     { Fabricate(:account, domain: 'popular') }
+  let!(:account2)    { Fabricate(:account, domain: 'popular') }
+  let!(:account3)    { Fabricate(:account, domain: 'less.popular') }
+
   before do
-    sign_in Fabricate(:user, admin: true), scope: :user
+    sign_in current_user, scope: :user
   end
 
   describe 'GET #index' do
@@ -16,10 +22,6 @@ RSpec.describe Admin::InstancesController, type: :controller do
     end
 
     it 'renders instances' do
-      Fabricate(:account, domain: 'popular')
-      Fabricate(:account, domain: 'popular')
-      Fabricate(:account, domain: 'less.popular')
-
       get :index, params: { page: 2 }
 
       instances = assigns(:instances).to_a
@@ -29,4 +31,27 @@ RSpec.describe Admin::InstancesController, type: :controller do
       expect(response).to have_http_status(200)
     end
   end
+
+  describe 'DELETE #destroy' do
+    subject { delete :destroy, params: { id: Instance.first.id } }
+
+    let(:current_user) { Fabricate(:user, admin: admin) }
+    let(:account) { Fabricate(:account) }
+
+    context 'when user is admin' do
+      let(:admin) { true }
+
+      it 'succeeds in purging instance' do
+        is_expected.to redirect_to admin_instances_path
+      end
+    end
+
+    context 'when user is not admin' do
+      let(:admin) { false }
+
+      it 'fails to purge instance' do
+        is_expected.to have_http_status :forbidden
+      end
+    end
+  end
 end
diff --git a/spec/policies/instance_policy_spec.rb b/spec/policies/instance_policy_spec.rb
index 77a3bde3f..72cf25f56 100644
--- a/spec/policies/instance_policy_spec.rb
+++ b/spec/policies/instance_policy_spec.rb
@@ -8,7 +8,7 @@ RSpec.describe InstancePolicy do
   let(:admin)   { Fabricate(:user, admin: true).account }
   let(:john)    { Fabricate(:user).account }
 
-  permissions :index? do
+  permissions :index?, :show?, :destroy? do
     context 'admin' do
       it 'permits' do
         expect(subject).to permit(admin, Instance)
diff --git a/spec/services/purge_domain_service_spec.rb b/spec/services/purge_domain_service_spec.rb
new file mode 100644
index 000000000..59285f126
--- /dev/null
+++ b/spec/services/purge_domain_service_spec.rb
@@ -0,0 +1,27 @@
+require 'rails_helper'
+
+RSpec.describe PurgeDomainService, type: :service do
+  let!(:old_account) { Fabricate(:account, domain: 'obsolete.org') }
+  let!(:old_status1) { Fabricate(:status, account: old_account) }
+  let!(:old_status2) { Fabricate(:status, account: old_account) }
+  let!(:old_attachment) { Fabricate(:media_attachment, account: old_account, status: old_status2, file: attachment_fixture('attachment.jpg')) }
+
+  subject { PurgeDomainService.new }
+
+  describe 'for a suspension' do
+    before do
+      subject.call('obsolete.org')
+    end
+
+    it 'removes the remote accounts\'s statuses and media attachments' do
+      expect { old_account.reload }.to raise_exception ActiveRecord::RecordNotFound
+      expect { old_status1.reload }.to raise_exception ActiveRecord::RecordNotFound
+      expect { old_status2.reload }.to raise_exception ActiveRecord::RecordNotFound
+      expect { old_attachment.reload }.to raise_exception ActiveRecord::RecordNotFound
+    end
+
+    it 'refreshes instances view' do
+      expect(Instance.where(domain: 'obsolete.org').exists?).to be false
+    end
+  end
+end
diff --git a/spec/workers/admin/domain_purge_worker_spec.rb b/spec/workers/admin/domain_purge_worker_spec.rb
new file mode 100644
index 000000000..b67c58b23
--- /dev/null
+++ b/spec/workers/admin/domain_purge_worker_spec.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe Admin::DomainPurgeWorker do
+  subject { described_class.new }
+
+  describe 'perform' do
+    it 'calls domain purge service for relevant domain block' do
+      service = double(call: nil)
+      allow(PurgeDomainService).to receive(:new).and_return(service)
+      result = subject.perform('example.com')
+
+      expect(result).to be_nil
+      expect(service).to have_received(:call).with('example.com')
+    end
+  end
+end