class Rack::MiniProfiler::FileStore
Constants
- EXPIRES_IN_SECONDS
Public Class Methods
new(args = nil)
click to toggle source
# File lib/mini_profiler/storage/file_store.rb, line 42 def initialize(args = nil) args ||= {} @path = args[:path] @expires_in_seconds = args[:expires_in] || EXPIRES_IN_SECONDS raise ArgumentError.new :path unless @path FileUtils.mkdir_p(@path) unless ::File.exists?(@path) @timer_struct_cache = FileCache.new(@path, "mp_timers") @timer_struct_lock = Mutex.new @user_view_cache = FileCache.new(@path, "mp_views") @user_view_lock = Mutex.new me = self t = CacheCleanupThread.new do interval = 10 cleanup_cache_cycle = 3600 cycle_count = 1 begin until Thread.current[:should_exit] do # TODO: a sane retry count before bailing # We don't want to hit the filesystem every 10s to clean up the cache so we need to do a bit of # accounting to avoid sleeping that entire time. We don't want to sleep for the entire period because # it means the thread will stay live in hot deployment scenarios, keeping a potentially large memory # graph from being garbage collected upon undeploy. if cycle_count * interval >= cleanup_cache_cycle cycle_count = 1 me.cleanup_cache end sleep(interval) cycle_count += 1 end rescue # don't crash the thread, we can clean up next time end end at_exit { t[:should_exit] = true } t end
Public Instance Methods
cleanup_cache()
click to toggle source
# File lib/mini_profiler/storage/file_store.rb, line 123 def cleanup_cache files = Dir.entries(@path) @timer_struct_lock.synchronize { files.each do |f| f = @path + '/' + f ::File.delete f if ::File.basename(f) =~ /^mp_timers/ and (Time.now - ::File.mtime(f)) > @expires_in_seconds end } @user_view_lock.synchronize { files.each do |f| f = @path + '/' + f ::File.delete f if ::File.basename(f) =~ /^mp_views/ and (Time.now - ::File.mtime(f)) > @expires_in_seconds end } end
get_unviewed_ids(user)
click to toggle source
# File lib/mini_profiler/storage/file_store.rb, line 117 def get_unviewed_ids(user) @user_view_lock.synchronize { @user_view_cache[user] } end
load(id)
click to toggle source
# File lib/mini_profiler/storage/file_store.rb, line 92 def load(id) @timer_struct_lock.synchronize { @timer_struct_cache[id] } end
save(page_struct)
click to toggle source
# File lib/mini_profiler/storage/file_store.rb, line 86 def save(page_struct) @timer_struct_lock.synchronize { @timer_struct_cache[page_struct[:id]] = page_struct } end
set_unviewed(user, id)
click to toggle source
# File lib/mini_profiler/storage/file_store.rb, line 98 def set_unviewed(user, id) @user_view_lock.synchronize { current = @user_view_cache[user] current = [] unless Array === current current << id @user_view_cache[user] = current.uniq } end
set_viewed(user, id)
click to toggle source
# File lib/mini_profiler/storage/file_store.rb, line 107 def set_viewed(user, id) @user_view_lock.synchronize { @user_view_cache[user] ||= [] current = @user_view_cache[user] current = [] unless Array === current current.delete(id) @user_view_cache[user] = current.uniq } end