diff options
Diffstat (limited to 'railties')
| -rw-r--r-- | railties/lib/rails/application/default_middleware_stack.rb | 30 | ||||
| -rw-r--r-- | railties/lib/rails/application/finisher.rb | 6 | ||||
| -rw-r--r-- | railties/test/application/middleware_test.rb | 33 |
3 files changed, 50 insertions, 19 deletions
diff --git a/railties/lib/rails/application/default_middleware_stack.rb b/railties/lib/rails/application/default_middleware_stack.rb index 6f9ccec137..88eade5c5a 100644 --- a/railties/lib/rails/application/default_middleware_stack.rb +++ b/railties/lib/rails/application/default_middleware_stack.rb @@ -26,7 +26,27 @@ module Rails middleware.use ::Rack::Cache, rack_cache end - middleware.use ::Rack::Lock unless allow_concurrency? + if config.allow_concurrency == false + # User has explicitly opted out of concurrent request + # handling: presumably their code is not threadsafe + + middleware.use ::Rack::Lock + + elsif config.allow_concurrency == :unsafe + # Do nothing, even if we know this is dangerous. This is the + # historical behaviour for true. + + else + # Default concurrency setting: enabled, but safe + + unless config.cache_classes && config.eager_load + # Without cache_classes + eager_load, the load interlock + # is required for proper operation + + middleware.use ::ActionDispatch::LoadInterlock + end + end + middleware.use ::Rack::Runtime middleware.use ::Rack::MethodOverride unless config.api_only middleware.use ::ActionDispatch::RequestId @@ -65,14 +85,6 @@ module Rails config.reload_classes_only_on_change != true || app.reloaders.map(&:updated?).any? end - def allow_concurrency? - if config.allow_concurrency.nil? - config.cache_classes && config.eager_load - else - config.allow_concurrency - end - end - def load_rack_cache rack_cache = config.action_dispatch.rack_cache return unless rack_cache diff --git a/railties/lib/rails/application/finisher.rb b/railties/lib/rails/application/finisher.rb index 0599e988d9..f8f92792a7 100644 --- a/railties/lib/rails/application/finisher.rb +++ b/railties/lib/rails/application/finisher.rb @@ -86,8 +86,10 @@ module Rails # added in the hook are taken into account. initializer :set_clear_dependencies_hook, group: :all do callback = lambda do - ActiveSupport::DescendantsTracker.clear - ActiveSupport::Dependencies.clear + ActiveSupport::Dependencies.interlock.attempt_loading do + ActiveSupport::DescendantsTracker.clear + ActiveSupport::Dependencies.clear + end end if config.reload_classes_only_on_change diff --git a/railties/test/application/middleware_test.rb b/railties/test/application/middleware_test.rb index ce92ebbf66..d298e8d632 100644 --- a/railties/test/application/middleware_test.rb +++ b/railties/test/application/middleware_test.rb @@ -26,7 +26,7 @@ module ApplicationTests assert_equal [ "Rack::Sendfile", "ActionDispatch::Static", - "Rack::Lock", + "ActionDispatch::LoadInterlock", "ActiveSupport::Cache::Strategy::LocalCache", "Rack::Runtime", "Rack::MethodOverride", @@ -58,7 +58,7 @@ module ApplicationTests assert_equal [ "Rack::Sendfile", "ActionDispatch::Static", - "Rack::Lock", + "ActionDispatch::LoadInterlock", "ActiveSupport::Cache::Strategy::LocalCache", "Rack::Runtime", "ActionDispatch::RequestId", @@ -121,23 +121,40 @@ module ApplicationTests assert !middleware.include?("ActiveRecord::Migration::CheckPending") end - test "includes lock if cache_classes is set but eager_load is not" do + test "includes interlock if cache_classes is set but eager_load is not" do add_to_config "config.cache_classes = true" boot! - assert middleware.include?("Rack::Lock") + assert_not_includes middleware, "Rack::Lock" + assert_includes middleware, "ActionDispatch::LoadInterlock" + end + + test "includes interlock if cache_classes is off" do + add_to_config "config.cache_classes = false" + boot! + assert_not_includes middleware, "Rack::Lock" + assert_includes middleware, "ActionDispatch::LoadInterlock" end test "does not include lock if cache_classes is set and so is eager_load" do add_to_config "config.cache_classes = true" add_to_config "config.eager_load = true" boot! - assert !middleware.include?("Rack::Lock") + assert_not_includes middleware, "Rack::Lock" + assert_not_includes middleware, "ActionDispatch::LoadInterlock" + end + + test "does not include lock if allow_concurrency is set to :unsafe" do + add_to_config "config.allow_concurrency = :unsafe" + boot! + assert_not_includes middleware, "Rack::Lock" + assert_not_includes middleware, "ActionDispatch::LoadInterlock" end - test "does not include lock if allow_concurrency is set" do - add_to_config "config.allow_concurrency = true" + test "includes lock if allow_concurrency is disabled" do + add_to_config "config.allow_concurrency = false" boot! - assert !middleware.include?("Rack::Lock") + assert_includes middleware, "Rack::Lock" + assert_not_includes middleware, "ActionDispatch::LoadInterlock" end test "removes static asset server if serve_static_files is disabled" do |