diff options
Diffstat (limited to 'activesupport/lib/active_support/cache')
4 files changed, 73 insertions, 20 deletions
diff --git a/activesupport/lib/active_support/cache/file_store.rb b/activesupport/lib/active_support/cache/file_store.rb index c4da04e532..9460532af0 100644 --- a/activesupport/lib/active_support/cache/file_store.rb +++ b/activesupport/lib/active_support/cache/file_store.rb @@ -8,20 +8,22 @@ module ActiveSupport # A cache store implementation which stores everything on the filesystem. # # FileStore implements the Strategy::LocalCache strategy which implements - # an in memory cache inside of a block. + # an in-memory cache inside of a block. class FileStore < Store 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) + EXCLUDED_DIRS = ['.', '..'].freeze def initialize(cache_path, options = nil) super(options) - @cache_path = cache_path + @cache_path = cache_path.to_s extend Strategy::LocalCache end def clear(options = nil) - root_dirs = Dir.entries(cache_path).reject{|f| f.in?(['.', '..'])} + root_dirs = Dir.entries(cache_path).reject{|f| f.in?(EXCLUDED_DIRS)} FileUtils.rm_r(root_dirs.collect{|f| File.join(cache_path, f)}) end @@ -129,15 +131,13 @@ 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 @@ -150,7 +150,7 @@ module ActiveSupport # Delete empty directories in the cache. def delete_empty_directories(dir) return if dir == cache_path - if Dir.entries(dir).reject{|f| f.in?(['.', '..'])}.empty? + if Dir.entries(dir).reject{|f| f.in?(EXCLUDED_DIRS)}.empty? File.delete(dir) rescue nil delete_empty_directories(File.dirname(dir)) end @@ -162,8 +162,9 @@ module ActiveSupport end def search_dir(dir, &callback) + return if !File.exist?(dir) Dir.foreach(dir) do |d| - next if d == "." || d == ".." + next if d.in?(EXCLUDED_DIRS) name = File.join(dir, d) if File.directory?(name) search_dir(name, &callback) diff --git a/activesupport/lib/active_support/cache/mem_cache_store.rb b/activesupport/lib/active_support/cache/mem_cache_store.rb index 7ef1497ac2..e38a8387b4 100644 --- a/activesupport/lib/active_support/cache/mem_cache_store.rb +++ b/activesupport/lib/active_support/cache/mem_cache_store.rb @@ -11,7 +11,7 @@ require 'active_support/core_ext/string/encoding' module ActiveSupport module Cache # A cache store implementation which stores data in Memcached: - # http://www.danga.com/memcached/ + # http://memcached.org/ # # This is currently the most popular cache store for production websites. # @@ -21,7 +21,7 @@ module ActiveSupport # server goes down, then MemCacheStore will ignore it until it comes back up. # # MemCacheStore implements the Strategy::LocalCache strategy which implements - # an in memory cache inside of a block. + # an in-memory cache inside of a block. class MemCacheStore < Store module Response # :nodoc: STORED = "STORED\r\n" @@ -31,7 +31,7 @@ module ActiveSupport DELETED = "DELETED\r\n" end - ESCAPE_KEY_CHARS = /[\x00-\x20%\x7F-\xFF]/ + ESCAPE_KEY_CHARS = /[\x00-\x20%\x7F-\xFF]/n def self.build_mem_cache(*addresses) addresses = addresses.flatten @@ -165,7 +165,7 @@ module ActiveSupport # characters properly. def escape_key(key) key = key.to_s.dup - key = key.force_encoding("BINARY") if key.encoding_aware? + key = key.force_encoding("BINARY") key = key.gsub(ESCAPE_KEY_CHARS){ |match| "%#{match.getbyte(0).to_s(16).upcase}" } key = "#{key[0, 213]}:md5:#{Digest::MD5.hexdigest(key)}" if key.size > 250 key @@ -183,6 +183,14 @@ module ActiveSupport # Provide support for raw values in the local cache strategy. module LocalCacheWithRaw # :nodoc: protected + def read_entry(key, options) + entry = super + if options[:raw] && local_cache && entry + entry = deserialize_entry(entry.value) + end + entry + end + def write_entry(key, entry, options) # :nodoc: retval = super if options[:raw] && local_cache && retval diff --git a/activesupport/lib/active_support/cache/null_store.rb b/activesupport/lib/active_support/cache/null_store.rb new file mode 100644 index 0000000000..4427eaafcd --- /dev/null +++ b/activesupport/lib/active_support/cache/null_store.rb @@ -0,0 +1,44 @@ +module ActiveSupport + module Cache + # A cache store implementation which doesn't actually store anything. Useful in + # development and test environments where you don't want caching turned on but + # need to go through the caching interface. + # + # This cache does implement the local cache strategy, so values will actually + # be cached inside blocks that utilize this strategy. See + # ActiveSupport::Cache::Strategy::LocalCache for more details. + class NullStore < Store + def initialize(options = nil) + super(options) + extend Strategy::LocalCache + end + + def clear(options = nil) + end + + def cleanup(options = nil) + end + + def increment(name, amount = 1, options = nil) + end + + def decrement(name, amount = 1, options = nil) + end + + def delete_matched(matcher, options = nil) + end + + protected + def read_entry(key, options) # :nodoc: + end + + def write_entry(key, entry, options) # :nodoc: + true + end + + def delete_entry(key, options) # :nodoc: + false + end + end + end +end diff --git a/activesupport/lib/active_support/cache/strategy/local_cache.rb b/activesupport/lib/active_support/cache/strategy/local_cache.rb index 0649a058aa..db5f228a70 100644 --- a/activesupport/lib/active_support/cache/strategy/local_cache.rb +++ b/activesupport/lib/active_support/cache/strategy/local_cache.rb @@ -4,9 +4,9 @@ require 'active_support/core_ext/string/inflections' module ActiveSupport module Cache module Strategy - # Caches that implement LocalCache will be backed by an in memory cache for the + # Caches that implement LocalCache will be backed by an in-memory cache for the # duration of a block. Repeated calls to the cache for the same key will hit the - # in memory cache for faster access. + # in-memory cache for faster access. module LocalCache # Simple memory backed cache. This cache is not thread safe and is intended only # for serving as a temporary memory cache for a single thread. |