6 files changed, 109 insertions, 0 deletions
diff --git a/config/initializers/1_settings.rb b/config/initializers/1_settings.rb
index 45ea2040d23..8ddf8e4d2e4 100644
--- a/config/initializers/1_settings.rb
+++ b/config/initializers/1_settings.rb
@@ -156,6 +156,7 @@ Settings.omniauth['external_providers'] = [] if Settings.omniauth['external_prov
 Settings.omniauth['block_auto_created_users'] = true if Settings.omniauth['block_auto_created_users'].nil?
 Settings.omniauth['auto_link_ldap_user'] = false if Settings.omniauth['auto_link_ldap_user'].nil?
 Settings.omniauth['auto_link_saml_user'] = false if Settings.omniauth['auto_link_saml_user'].nil?
+Settings.omniauth['sync_email_from_provider'] ||= nil
 
 Settings.omniauth['providers'] ||= []
 Settings.omniauth['cas3'] ||= Settingslogic.new({})
diff --git a/config/initializers/8_metrics.rb b/config/initializers/8_metrics.rb
index 5e0eefdb154..508b886d6a0 100644
--- a/config/initializers/8_metrics.rb
+++ b/config/initializers/8_metrics.rb
@@ -113,6 +113,9 @@ def instrument_classes(instrumentation)
 
   # This is a Rails scope so we have to instrument it manually.
   instrumentation.instrument_method(Project, :visible_to_user)
+
+  # Needed for https://gitlab.com/gitlab-org/gitlab-ce/issues/30224#note_32306159
+  instrumentation.instrument_instance_method(MergeRequestDiff, :load_commits)
 end
 # rubocop:enable Metrics/AbcSize
 
diff --git a/config/initializers/active_record_data_types.rb b/config/initializers/active_record_data_types.rb
new file mode 100644
index 00000000000..beb97c6fce0
--- /dev/null
+++ b/config/initializers/active_record_data_types.rb
@@ -0,0 +1,24 @@
+# ActiveRecord custom data type for storing datetimes with timezone information.
+# See https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/11229
+
+if Gitlab::Database.postgresql?
+  require 'active_record/connection_adapters/postgresql_adapter'
+
+  module ActiveRecord
+    module ConnectionAdapters
+      class PostgreSQLAdapter
+        NATIVE_DATABASE_TYPES.merge!(datetime_with_timezone: { name: 'timestamptz' })
+      end
+    end
+  end
+elsif Gitlab::Database.mysql?
+  require 'active_record/connection_adapters/mysql2_adapter'
+
+  module ActiveRecord
+    module ConnectionAdapters
+      class AbstractMysqlAdapter
+        NATIVE_DATABASE_TYPES.merge!(datetime_with_timezone: { name: 'timestamp' })
+      end
+    end
+  end
+end
diff --git a/config/initializers/active_record_table_definition.rb b/config/initializers/active_record_table_definition.rb
new file mode 100644
index 00000000000..4f59e35f4da
--- /dev/null
+++ b/config/initializers/active_record_table_definition.rb
@@ -0,0 +1,24 @@
+# ActiveRecord custom method definitions with timezone information.
+# See https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/11229
+
+require 'active_record/connection_adapters/abstract/schema_definitions'
+
+# Appends columns `created_at` and `updated_at` to a table.
+#
+# It is used in table creation like:
+# create_table 'users' do |t|
+#   t.timestamps_with_timezone
+# end
+module ActiveRecord
+  module ConnectionAdapters
+    class TableDefinition
+      def timestamps_with_timezone(**options)
+        options[:null] = false if options[:null].nil?
+
+        [:created_at, :updated_at].each do |column_name|
+          column(column_name, :datetime_with_timezone, options)
+        end
+      end
+    end
+  end
+end
diff --git a/config/initializers/peek.rb b/config/initializers/peek.rb
new file mode 100644
index 00000000000..65432caac2a
--- /dev/null
+++ b/config/initializers/peek.rb
@@ -0,0 +1,32 @@
+Rails.application.config.peek.adapter = :redis, { client: ::Redis.new(Gitlab::Redis.params) }
+
+Peek.into Peek::Views::Host
+Peek.into Peek::Views::PerformanceBar
+if Gitlab::Database.mysql?
+  require 'peek-mysql2'
+  PEEK_DB_CLIENT = ::Mysql2::Client
+  PEEK_DB_VIEW = Peek::Views::Mysql2
+else
+  require 'peek-pg'
+  PEEK_DB_CLIENT = ::PG::Connection
+  PEEK_DB_VIEW = Peek::Views::PG
+end
+Peek.into PEEK_DB_VIEW
+Peek.into Peek::Views::Redis
+Peek.into Peek::Views::Sidekiq
+Peek.into Peek::Views::Rblineprof
+Peek.into Peek::Views::GC
+
+# rubocop:disable Style/ClassAndModuleCamelCase
+class PEEK_DB_CLIENT
+  class << self
+    attr_accessor :query_details
+  end
+  self.query_details = Concurrent::Array.new
+end
+
+PEEK_DB_VIEW.prepend ::Gitlab::PerformanceBar::PeekQueryTracker
+
+class Peek::Views::PerformanceBar::ProcessUtilization
+  prepend ::Gitlab::PerformanceBar::PeekPerformanceBarWithRackBody
+end
diff --git a/config/initializers/rugged_use_gitlab_git_attributes.rb b/config/initializers/rugged_use_gitlab_git_attributes.rb
new file mode 100644
index 00000000000..7d652799786
--- /dev/null
+++ b/config/initializers/rugged_use_gitlab_git_attributes.rb
@@ -0,0 +1,25 @@
+# We don't want to ever call Rugged::Repository#fetch_attributes, because it has
+# a lot of I/O overhead:
+# <https://gitlab.com/gitlab-org/gitlab_git/commit/340e111e040ae847b614d35b4d3173ec48329015>
+#
+# While we don't do this from within the GitLab source itself, the Linguist gem
+# has a dependency on Rugged and uses the gitattributes file when calculating
+# repository-wide language statistics:
+# <https://github.com/github/linguist/blob/v4.7.0/lib/linguist/lazy_blob.rb#L33-L36>
+#
+# The options passed by Linguist are those assumed by Gitlab::Git::Attributes
+# anyway, and there is no great efficiency gain from just fetching the listed
+# attributes with our implementation, so we ignore the additional arguments.
+#
+module Rugged
+  class Repository
+    module UseGitlabGitAttributes
+      def fetch_attributes(name, *)
+        @attributes ||= Gitlab::Git::Attributes.new(path)
+        @attributes.attributes(name)
+      end
+    end
+
+    prepend UseGitlabGitAttributes
+  end
+end