diff options
Diffstat (limited to 'activesupport/lib/active_support/cache/file_store.rb')
-rw-r--r-- | activesupport/lib/active_support/cache/file_store.rb | 61 |
1 files changed, 36 insertions, 25 deletions
diff --git a/activesupport/lib/active_support/cache/file_store.rb b/activesupport/lib/active_support/cache/file_store.rb index 8e265ad863..d08ecd2f7d 100644 --- a/activesupport/lib/active_support/cache/file_store.rb +++ b/activesupport/lib/active_support/cache/file_store.rb @@ -14,6 +14,7 @@ module ActiveSupport DIR_FORMATTER = "%03X" FILENAME_MAX_SIZE = 228 # max filename size on file system is 255, minus room for timestamp and random characters appended by Tempfile (used by atomic write) + FILEPATH_MAX_SIZE = 900 # max is 1024, plus some room EXCLUDED_DIRS = ['.', '..'].freeze def initialize(cache_path, options = nil) @@ -22,45 +23,34 @@ module ActiveSupport extend Strategy::LocalCache end + # Deletes all items from the cache. In this case it deletes all the entries in the specified + # file store directory except for .gitkeep. Be careful which directory is specified in your + # config file when using +FileStore+ because everything in that directory will be deleted. def clear(options = nil) root_dirs = Dir.entries(cache_path).reject {|f| (EXCLUDED_DIRS + [".gitkeep"]).include?(f)} FileUtils.rm_r(root_dirs.collect{|f| File.join(cache_path, f)}) end + # Preemptively iterates through all stored keys and removes the ones which have expired. def cleanup(options = nil) options = merged_options(options) - each_key(options) do |key| + search_dir(cache_path) do |fname| + key = file_path_key(fname) entry = read_entry(key, options) delete_entry(key, options) if entry && entry.expired? end end + # Increments an already existing integer value that is stored in the cache. + # If the key is not found nothing is done. def increment(name, amount = 1, options = nil) - file_name = key_file_path(namespaced_key(name, options)) - lock_file(file_name) do - options = merged_options(options) - if num = read(name, options) - num = num.to_i + amount - write(name, num, options) - num - else - nil - end - end + modify_value(name, amount, options) end + # Decrements an already existing integer value that is stored in the cache. + # If the key is not found nothing is done. def decrement(name, amount = 1, options = nil) - file_name = key_file_path(namespaced_key(name, options)) - lock_file(file_name) do - options = merged_options(options) - if num = read(name, options) - num = num.to_i - amount - write(name, num, options) - num - else - nil - end - end + modify_value(name, -amount, options) end def delete_matched(matcher, options = nil) @@ -88,6 +78,7 @@ module ActiveSupport def write_entry(key, entry, options) file_name = key_file_path(key) + return false if options[:unless_exist] && File.exist?(file_name) ensure_cache_path(File.dirname(file_name)) File.atomic_write(file_name, cache_path) {|f| Marshal.dump(entry, f)} true @@ -127,6 +118,10 @@ module ActiveSupport # Translate a key into a file path. def key_file_path(key) + if key.size > FILEPATH_MAX_SIZE + key = Digest::MD5.hexdigest(key) + end + fname = URI.encode_www_form_component(key) hash = Zlib.adler32(fname) hash, dir_1 = hash.divmod(0x1000) @@ -150,9 +145,9 @@ module ActiveSupport # Delete empty directories in the cache. def delete_empty_directories(dir) - return if dir == cache_path + return if File.realpath(dir) == File.realpath(cache_path) if Dir.entries(dir).reject {|f| EXCLUDED_DIRS.include?(f)}.empty? - File.delete(dir) rescue nil + Dir.delete(dir) rescue nil delete_empty_directories(File.dirname(dir)) end end @@ -174,6 +169,22 @@ module ActiveSupport end end end + + # Modifies the amount of an already existing integer value that is stored in the cache. + # If the key is not found nothing is done. + def modify_value(name, amount, options) + file_name = key_file_path(namespaced_key(name, options)) + + lock_file(file_name) do + options = merged_options(options) + + if num = read(name, options) + num = num.to_i + amount + write(name, num, options) + num + end + end + end end end end |