diff options
Diffstat (limited to 'activerecord/lib/active_record')
3 files changed, 19 insertions, 17 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb b/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb index adb5ae82a0..9b3f5260f7 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb @@ -999,15 +999,30 @@ module ActiveRecord end end + attr_reader :prevent_writes + def initialize # These caches are keyed by spec.name (ConnectionSpecification#name). @owner_to_pool = ConnectionHandler.create_owner_to_pool + @prevent_writes = false # Backup finalizer: if the forked child never needed a pool, the above # early discard has not occurred ObjectSpace.define_finalizer self, ConnectionHandler.unowned_pool_finalizer(@owner_to_pool) end + # Prevent writing to the database regardless of role. + # + # In some cases you may want to prevent writes to the database + # even if you are on a database that can write. `while_preventing_writes` + # will prevent writes to the database for the duration of the block. + def while_preventing_writes + original, @prevent_writes = @prevent_writes, true + yield + ensure + @prevent_writes = original + end + def connection_pool_list owner_to_pool.values.compact end diff --git a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb index 7d3ec7ecfd..c0ead17b3b 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb @@ -78,7 +78,7 @@ module ActiveRecord SIMPLE_INT = /\A\d+\z/ attr_accessor :pool - attr_reader :visitor, :owner, :logger, :lock, :prepared_statements, :prevent_writes + attr_reader :visitor, :owner, :logger, :lock, :prepared_statements alias :in_use? :owner set_callback :checkin, :after, :enable_lazy_transactions! @@ -117,7 +117,6 @@ module ActiveRecord @pool = ActiveRecord::ConnectionAdapters::NullPool.new @idle_since = Concurrent.monotonic_time @quoted_column_names, @quoted_table_names = {}, {} - @prevent_writes = false @visitor = arel_visitor @statements = build_statement_pool @lock = ActiveSupport::Concurrency::LoadInterlockAwareMonitor.new @@ -143,19 +142,7 @@ module ActiveRecord # Returns true if the connection is a replica, or if +prevent_writes+ # is set to true. def preventing_writes? - replica? || prevent_writes - end - - # Prevent writing to the database regardless of role. - # - # In some cases you may want to prevent writes to the database - # even if you are on a database that can write. `while_preventing_writes` - # will prevent writes to the database for the duration of the block. - def while_preventing_writes - original, @prevent_writes = @prevent_writes, true - yield - ensure - @prevent_writes = original + replica? || ActiveRecord::Base.connection_handler.prevent_writes end def migrations_paths # :nodoc: diff --git a/activerecord/lib/active_record/middleware/database_selector/resolver.rb b/activerecord/lib/active_record/middleware/database_selector/resolver.rb index 5b89c8f668..3eb1039c50 100644 --- a/activerecord/lib/active_record/middleware/database_selector/resolver.rb +++ b/activerecord/lib/active_record/middleware/database_selector/resolver.rb @@ -45,8 +45,8 @@ module ActiveRecord private def read_from_primary(&blk) - ActiveRecord::Base.connection.while_preventing_writes do - ActiveRecord::Base.connected_to(role: ActiveRecord::Base.writing_role) do + ActiveRecord::Base.connected_to(role: ActiveRecord::Base.writing_role) do + ActiveRecord::Base.connection_handler.while_preventing_writes do instrumenter.instrument("database_selector.active_record.read_from_primary") do yield end |