class Rack::MiniProfiler::FileStore
Constants
- EXPIRES_IN_SECONDS
Public Class Methods
Source
# File lib/mini_profiler/storage/file_store.rb, line 51 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.exist?(@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 @auth_token_cache = FileCache.new(@path, "tokens") @auth_token_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 } end
Public Instance Methods
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# File lib/mini_profiler/storage/file_store.rb, line 145 def allowed_tokens @auth_token_lock.synchronize { token1, token2, cycle_at = @auth_token_cache[""] unless cycle_at && (Float === cycle_at) && (cycle_at > Process.clock_gettime(Process::CLOCK_MONOTONIC)) token2 = token1 token1 = SecureRandom.hex cycle_at = Process.clock_gettime(Process::CLOCK_MONOTONIC) + Rack::MiniProfiler::AbstractStore::MAX_TOKEN_AGE end @auth_token_cache[""] = [token1, token2, cycle_at] [token1, token2].compact } end
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# File lib/mini_profiler/storage/file_store.rb, line 161 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/) && ((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/) && ((Time.now - ::File.mtime(f)) > @expires_in_seconds) end } end
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# File lib/mini_profiler/storage/file_store.rb, line 139 def flush_tokens @auth_token_lock.synchronize { @auth_token_cache[""] = nil } end
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# File lib/mini_profiler/storage/file_store.rb, line 133 def get_unviewed_ids(user) @user_view_lock.synchronize { @user_view_cache[user] } end
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# File lib/mini_profiler/storage/file_store.rb, line 102 def load(id) @timer_struct_lock.synchronize { @timer_struct_cache[id] } end
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# File lib/mini_profiler/storage/file_store.rb, line 96 def save(page_struct) @timer_struct_lock.synchronize { @timer_struct_cache[page_struct[:id]] = page_struct } end
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# File lib/mini_profiler/storage/file_store.rb, line 127 def set_all_unviewed(user, ids) @user_view_lock.synchronize { @user_view_cache[user] = ids.uniq } end
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# File lib/mini_profiler/storage/file_store.rb, line 108 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
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# File lib/mini_profiler/storage/file_store.rb, line 117 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