diff options
| -rw-r--r-- | activesupport/lib/active_support/cache/file_store.rb | 17 | ||||
| -rw-r--r-- | activesupport/test/caching_test.rb | 9 |
2 files changed, 17 insertions, 9 deletions
diff --git a/activesupport/lib/active_support/cache/file_store.rb b/activesupport/lib/active_support/cache/file_store.rb index f7c01948b4..ab2382d98c 100644 --- a/activesupport/lib/active_support/cache/file_store.rb +++ b/activesupport/lib/active_support/cache/file_store.rb @@ -13,6 +13,7 @@ module ActiveSupport attr_reader :cache_path DIR_FORMATTER = "%03X" + FILENAME_MAX_SIZE = 230 # max filename size on file system is 255, minus room for timestamp and random characters appended by Tempfile (used by atomic write) def initialize(cache_path, options = nil) super(options) @@ -129,15 +130,13 @@ module ActiveSupport hash, dir_1 = hash.divmod(0x1000) dir_2 = hash.modulo(0x1000) fname_paths = [] - # Make sure file name is < 255 characters so it doesn't exceed file system limits. - if fname.size <= 255 - fname_paths << fname - else - while fname.size <= 255 - fname_path << fname[0, 255] - fname = fname[255, -1] - end - end + + # Make sure file name doesn't exceed file system limits. + begin + fname_paths << fname[0...FILENAME_MAX_SIZE] + fname = fname[FILENAME_MAX_SIZE..-1] + end until fname.blank? + File.join(cache_path, DIR_FORMATTER % dir_1, DIR_FORMATTER % dir_2, *fname_paths) end diff --git a/activesupport/test/caching_test.rb b/activesupport/test/caching_test.rb index 6bb13ec9b8..6b113594cc 100644 --- a/activesupport/test/caching_test.rb +++ b/activesupport/test/caching_test.rb @@ -557,6 +557,15 @@ class FileStoreTest < ActiveSupport::TestCase key = @cache_with_pathname.send(:key_file_path, "views/index?id=1") assert_equal "views/index?id=1", @cache_with_pathname.send(:file_path_key, key) end + + # Because file systems have a maximum filename size, filenames > max size should be split in to directories + # If filename is 'AAAAB', where max size is 4, the returned path should be AAAA/B + def test_key_transformation_max_filename_size + key = "#{'A' * ActiveSupport::Cache::FileStore::FILENAME_MAX_SIZE}B" + path = @cache.send(:key_file_path, key) + assert path.split('/').all? { |dir_name| dir_name.size <= ActiveSupport::Cache::FileStore::FILENAME_MAX_SIZE} + assert_equal 'B', File.basename(path) + end end class MemoryStoreTest < ActiveSupport::TestCase |