Backport of https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/14597

This is the first part of Docker Registry replication
    for secondary Geo node.

app/models/container_repository.rb

@@ -86,4 +86,9 @@ class ContainerRepository < ApplicationRecord
   def self.build_root_repository(project)
     self.new(project: project, name: '')
   end
+
+  def self.find_by_path!(path)
+    self.find_by!(project: path.repository_project,
+                  name: path.repository_name)
+  end
 end

config/gitlab.yml.example

@@ -400,6 +400,15 @@ production: &base
     # path: shared/registry
     # issuer: gitlab-issuer
 
+    # Add notification settings if you plan to use Geo Replication for the registry
+    # notifications:
+    # - name: geo_event
+    #   url: https://example.com/api/v4/container_registry_event/events
+    #   timeout: 2s
+    #   threshold: 5
+    #   backoff: 1s
+    #   headers:
+    #     Authorization: secret_phrase
 
   ## Error Reporting and Logging with Sentry
   sentry:

config/initializers/1_settings.rb

@@ -259,6 +259,7 @@ Settings.registry['key']           ||= nil
 Settings.registry['issuer']        ||= nil
 Settings.registry['host_port']     ||= [Settings.registry['host'], Settings.registry['port']].compact.join(':')
 Settings.registry['path']            = Settings.absolute(Settings.registry['path'] || File.join(Settings.shared['path'], 'registry'))
+Settings.registry['notifications'] ||= []
 
 #
 # Error Reporting and Logging with Sentry

db/migrate/20190611100201_add_geo_container_repository_updated_events_table.rb

+# frozen_string_literal: true
+
+class AddGeoContainerRepositoryUpdatedEventsTable < ActiveRecord::Migration[5.1]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def change
+    create_table :geo_container_repository_updated_events, force: :cascade do |t|
+      t.integer :container_repository_id, null: false
+
+      t.index :container_repository_id, name: :idx_geo_con_rep_updated_events_on_container_repository_id, using: :btree
+    end
+
+    add_column :geo_event_log, :container_repository_updated_event_id, :bigint
+  end
+end

db/migrate/20190611100202_add_index_to_geo_event_log.rb

+# frozen_string_literal: true
+
+class AddIndexToGeoEventLog < ActiveRecord::Migration[5.1]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :geo_event_log, :container_repository_updated_event_id
+  end
+
+  def down
+    remove_concurrent_index(:geo_event_log, :container_repository_updated_event_id)
+  end
+end

db/migrate/20190627122264_add_foreign_keys_for_container_repository.rb

+# frozen_string_literal: true
+
+class AddForeignKeysForContainerRepository < ActiveRecord::Migration[5.1]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_foreign_key(:geo_container_repository_updated_events, :container_repositories, column: :container_repository_id, on_delete: :cascade)
+
+    add_concurrent_foreign_key(:geo_event_log, :geo_container_repository_updated_events, column: :container_repository_updated_event_id, on_delete: :cascade)
+  end
+
+  def down
+    if foreign_key_exists?(:geo_container_repository_updated_events, :container_repositories)
+      remove_foreign_key(:geo_container_repository_updated_events, :container_repositories)
+    end
+
+    if foreign_key_exists?(:geo_event_log, :geo_container_repository_updated_events)
+      remove_foreign_key(:geo_event_log, :geo_container_repository_updated_events)
+    end
+  end
+end

db/schema.rb

@@ -1275,6 +1275,11 @@ ActiveRecord::Schema.define(version: 2019_07_15_114644) do
     t.string "key", null: false
   end
 
+  create_table "geo_container_repository_updated_events", force: :cascade do |t|
+    t.integer "container_repository_id", null: false
+    t.index ["container_repository_id"], name: "idx_geo_con_rep_updated_events_on_container_repository_id"
+  end
+
   create_table "geo_event_log", force: :cascade do |t|
     t.datetime "created_at", null: false
     t.bigint "repository_updated_event_id"
@@ -1289,7 +1294,9 @@ ActiveRecord::Schema.define(version: 2019_07_15_114644) do
     t.bigint "job_artifact_deleted_event_id"
     t.bigint "reset_checksum_event_id"
     t.bigint "cache_invalidation_event_id"
+    t.bigint "container_repository_updated_event_id"
     t.index ["cache_invalidation_event_id"], name: "index_geo_event_log_on_cache_invalidation_event_id", where: "(cache_invalidation_event_id IS NOT NULL)"
+    t.index ["container_repository_updated_event_id"], name: "index_geo_event_log_on_container_repository_updated_event_id"
     t.index ["hashed_storage_attachments_event_id"], name: "index_geo_event_log_on_hashed_storage_attachments_event_id", where: "(hashed_storage_attachments_event_id IS NOT NULL)"
     t.index ["hashed_storage_migrated_event_id"], name: "index_geo_event_log_on_hashed_storage_migrated_event_id", where: "(hashed_storage_migrated_event_id IS NOT NULL)"
     t.index ["job_artifact_deleted_event_id"], name: "index_geo_event_log_on_job_artifact_deleted_event_id", where: "(job_artifact_deleted_event_id IS NOT NULL)"
@@ -3700,7 +3707,9 @@ ActiveRecord::Schema.define(version: 2019_07_15_114644) do
   add_foreign_key "fork_network_members", "projects", on_delete: :cascade
   add_foreign_key "fork_networks", "projects", column: "root_project_id", name: "fk_e7b436b2b5", on_delete: :nullify
   add_foreign_key "forked_project_links", "projects", column: "forked_to_project_id", name: "fk_434510edb0", on_delete: :cascade
+  add_foreign_key "geo_container_repository_updated_events", "container_repositories", name: "fk_212c89c706", on_delete: :cascade
   add_foreign_key "geo_event_log", "geo_cache_invalidation_events", column: "cache_invalidation_event_id", name: "fk_42c3b54bed", on_delete: :cascade
+  add_foreign_key "geo_event_log", "geo_container_repository_updated_events", column: "container_repository_updated_event_id", name: "fk_6ada82d42a", on_delete: :cascade
   add_foreign_key "geo_event_log", "geo_hashed_storage_migrated_events", column: "hashed_storage_migrated_event_id", name: "fk_27548c6db3", on_delete: :cascade
   add_foreign_key "geo_event_log", "geo_job_artifact_deleted_events", column: "job_artifact_deleted_event_id", name: "fk_176d3fbb5d", on_delete: :cascade
   add_foreign_key "geo_event_log", "geo_lfs_object_deleted_events", column: "lfs_object_deleted_event_id", name: "fk_d5af95fcd9", on_delete: :cascade