From a40223d36d4e90d520b09d51a3f2a7b3cd6c2f07 Mon Sep 17 00:00:00 2001 From: Joshua Peek Date: Sun, 4 May 2008 21:53:07 -0500 Subject: [PATCH] Preload TimeZone zones for thread safety. --- .../lib/active_support/values/time_zone.rb | 439 +++++++++--------- 1 file changed, 222 insertions(+), 217 deletions(-) diff --git a/activesupport/lib/active_support/values/time_zone.rb b/activesupport/lib/active_support/values/time_zone.rb index 80057fe832..9cdc2a74ed 100644 --- a/activesupport/lib/active_support/values/time_zone.rb +++ b/activesupport/lib/active_support/values/time_zone.rb @@ -1,149 +1,152 @@ class TimeZone - # Keys are Rails TimeZone names, values are TZInfo identifiers - MAPPING = { - "International Date Line West" => "Pacific/Midway", - "Midway Island" => "Pacific/Midway", - "Samoa" => "Pacific/Pago_Pago", - "Hawaii" => "Pacific/Honolulu", - "Alaska" => "America/Juneau", - "Pacific Time (US & Canada)" => "America/Los_Angeles", - "Tijuana" => "America/Tijuana", - "Mountain Time (US & Canada)" => "America/Denver", - "Arizona" => "America/Phoenix", - "Chihuahua" => "America/Chihuahua", - "Mazatlan" => "America/Mazatlan", - "Central Time (US & Canada)" => "America/Chicago", - "Saskatchewan" => "America/Regina", - "Guadalajara" => "America/Mexico_City", - "Mexico City" => "America/Mexico_City", - "Monterrey" => "America/Monterrey", - "Central America" => "America/Guatemala", - "Eastern Time (US & Canada)" => "America/New_York", - "Indiana (East)" => "America/Indiana/Indianapolis", - "Bogota" => "America/Bogota", - "Lima" => "America/Lima", - "Quito" => "America/Lima", - "Atlantic Time (Canada)" => "America/Halifax", - "Caracas" => "America/Caracas", - "La Paz" => "America/La_Paz", - "Santiago" => "America/Santiago", - "Newfoundland" => "America/St_Johns", - "Brasilia" => "America/Argentina/Buenos_Aires", - "Buenos Aires" => "America/Argentina/Buenos_Aires", - "Georgetown" => "America/Argentina/San_Juan", - "Greenland" => "America/Godthab", - "Mid-Atlantic" => "Atlantic/South_Georgia", - "Azores" => "Atlantic/Azores", - "Cape Verde Is." => "Atlantic/Cape_Verde", - "Dublin" => "Europe/Dublin", - "Edinburgh" => "Europe/Dublin", - "Lisbon" => "Europe/Lisbon", - "London" => "Europe/London", - "Casablanca" => "Africa/Casablanca", - "Monrovia" => "Africa/Monrovia", - "UTC" => "Etc/UTC", - "Belgrade" => "Europe/Belgrade", - "Bratislava" => "Europe/Bratislava", - "Budapest" => "Europe/Budapest", - "Ljubljana" => "Europe/Ljubljana", - "Prague" => "Europe/Prague", - "Sarajevo" => "Europe/Sarajevo", - "Skopje" => "Europe/Skopje", - "Warsaw" => "Europe/Warsaw", - "Zagreb" => "Europe/Zagreb", - "Brussels" => "Europe/Brussels", - "Copenhagen" => "Europe/Copenhagen", - "Madrid" => "Europe/Madrid", - "Paris" => "Europe/Paris", - "Amsterdam" => "Europe/Amsterdam", - "Berlin" => "Europe/Berlin", - "Bern" => "Europe/Berlin", - "Rome" => "Europe/Rome", - "Stockholm" => "Europe/Stockholm", - "Vienna" => "Europe/Vienna", - "West Central Africa" => "Africa/Algiers", - "Bucharest" => "Europe/Bucharest", - "Cairo" => "Africa/Cairo", - "Helsinki" => "Europe/Helsinki", - "Kyev" => "Europe/Kiev", - "Riga" => "Europe/Riga", - "Sofia" => "Europe/Sofia", - "Tallinn" => "Europe/Tallinn", - "Vilnius" => "Europe/Vilnius", - "Athens" => "Europe/Athens", - "Istanbul" => "Europe/Istanbul", - "Minsk" => "Europe/Minsk", - "Jerusalem" => "Asia/Jerusalem", - "Harare" => "Africa/Harare", - "Pretoria" => "Africa/Johannesburg", - "Moscow" => "Europe/Moscow", - "St. Petersburg" => "Europe/Moscow", - "Volgograd" => "Europe/Moscow", - "Kuwait" => "Asia/Kuwait", - "Riyadh" => "Asia/Riyadh", - "Nairobi" => "Africa/Nairobi", - "Baghdad" => "Asia/Baghdad", - "Tehran" => "Asia/Tehran", - "Abu Dhabi" => "Asia/Muscat", - "Muscat" => "Asia/Muscat", - "Baku" => "Asia/Baku", - "Tbilisi" => "Asia/Tbilisi", - "Yerevan" => "Asia/Yerevan", - "Kabul" => "Asia/Kabul", - "Ekaterinburg" => "Asia/Yekaterinburg", - "Islamabad" => "Asia/Karachi", - "Karachi" => "Asia/Karachi", - "Tashkent" => "Asia/Tashkent", - "Chennai" => "Asia/Kolkata", - "Kolkata" => "Asia/Kolkata", - "Mumbai" => "Asia/Kolkata", - "New Delhi" => "Asia/Kolkata", - "Kathmandu" => "Asia/Katmandu", - "Astana" => "Asia/Dhaka", - "Dhaka" => "Asia/Dhaka", - "Sri Jayawardenepura" => "Asia/Dhaka", - "Almaty" => "Asia/Almaty", - "Novosibirsk" => "Asia/Novosibirsk", - "Rangoon" => "Asia/Rangoon", - "Bangkok" => "Asia/Bangkok", - "Hanoi" => "Asia/Bangkok", - "Jakarta" => "Asia/Jakarta", - "Krasnoyarsk" => "Asia/Krasnoyarsk", - "Beijing" => "Asia/Shanghai", - "Chongqing" => "Asia/Chongqing", - "Hong Kong" => "Asia/Hong_Kong", - "Urumqi" => "Asia/Urumqi", - "Kuala Lumpur" => "Asia/Kuala_Lumpur", - "Singapore" => "Asia/Singapore", - "Taipei" => "Asia/Taipei", - "Perth" => "Australia/Perth", - "Irkutsk" => "Asia/Irkutsk", - "Ulaan Bataar" => "Asia/Ulaanbaatar", - "Seoul" => "Asia/Seoul", - "Osaka" => "Asia/Tokyo", - "Sapporo" => "Asia/Tokyo", - "Tokyo" => "Asia/Tokyo", - "Yakutsk" => "Asia/Yakutsk", - "Darwin" => "Australia/Darwin", - "Adelaide" => "Australia/Adelaide", - "Canberra" => "Australia/Melbourne", - "Melbourne" => "Australia/Melbourne", - "Sydney" => "Australia/Sydney", - "Brisbane" => "Australia/Brisbane", - "Hobart" => "Australia/Hobart", - "Vladivostok" => "Asia/Vladivostok", - "Guam" => "Pacific/Guam", - "Port Moresby" => "Pacific/Port_Moresby", - "Magadan" => "Asia/Magadan", - "Solomon Is." => "Asia/Magadan", - "New Caledonia" => "Pacific/Noumea", - "Fiji" => "Pacific/Fiji", - "Kamchatka" => "Asia/Kamchatka", - "Marshall Is." => "Pacific/Majuro", - "Auckland" => "Pacific/Auckland", - "Wellington" => "Pacific/Auckland", - "Nuku'alofa" => "Pacific/Tongatapu" - } + unless const_defined?(:MAPPING) + # Keys are Rails TimeZone names, values are TZInfo identifiers + MAPPING = { + "International Date Line West" => "Pacific/Midway", + "Midway Island" => "Pacific/Midway", + "Samoa" => "Pacific/Pago_Pago", + "Hawaii" => "Pacific/Honolulu", + "Alaska" => "America/Juneau", + "Pacific Time (US & Canada)" => "America/Los_Angeles", + "Tijuana" => "America/Tijuana", + "Mountain Time (US & Canada)" => "America/Denver", + "Arizona" => "America/Phoenix", + "Chihuahua" => "America/Chihuahua", + "Mazatlan" => "America/Mazatlan", + "Central Time (US & Canada)" => "America/Chicago", + "Saskatchewan" => "America/Regina", + "Guadalajara" => "America/Mexico_City", + "Mexico City" => "America/Mexico_City", + "Monterrey" => "America/Monterrey", + "Central America" => "America/Guatemala", + "Eastern Time (US & Canada)" => "America/New_York", + "Indiana (East)" => "America/Indiana/Indianapolis", + "Bogota" => "America/Bogota", + "Lima" => "America/Lima", + "Quito" => "America/Lima", + "Atlantic Time (Canada)" => "America/Halifax", + "Caracas" => "America/Caracas", + "La Paz" => "America/La_Paz", + "Santiago" => "America/Santiago", + "Newfoundland" => "America/St_Johns", + "Brasilia" => "America/Argentina/Buenos_Aires", + "Buenos Aires" => "America/Argentina/Buenos_Aires", + "Georgetown" => "America/Argentina/San_Juan", + "Greenland" => "America/Godthab", + "Mid-Atlantic" => "Atlantic/South_Georgia", + "Azores" => "Atlantic/Azores", + "Cape Verde Is." => "Atlantic/Cape_Verde", + "Dublin" => "Europe/Dublin", + "Edinburgh" => "Europe/Dublin", + "Lisbon" => "Europe/Lisbon", + "London" => "Europe/London", + "Casablanca" => "Africa/Casablanca", + "Monrovia" => "Africa/Monrovia", + "UTC" => "Etc/UTC", + "Belgrade" => "Europe/Belgrade", + "Bratislava" => "Europe/Bratislava", + "Budapest" => "Europe/Budapest", + "Ljubljana" => "Europe/Ljubljana", + "Prague" => "Europe/Prague", + "Sarajevo" => "Europe/Sarajevo", + "Skopje" => "Europe/Skopje", + "Warsaw" => "Europe/Warsaw", + "Zagreb" => "Europe/Zagreb", + "Brussels" => "Europe/Brussels", + "Copenhagen" => "Europe/Copenhagen", + "Madrid" => "Europe/Madrid", + "Paris" => "Europe/Paris", + "Amsterdam" => "Europe/Amsterdam", + "Berlin" => "Europe/Berlin", + "Bern" => "Europe/Berlin", + "Rome" => "Europe/Rome", + "Stockholm" => "Europe/Stockholm", + "Vienna" => "Europe/Vienna", + "West Central Africa" => "Africa/Algiers", + "Bucharest" => "Europe/Bucharest", + "Cairo" => "Africa/Cairo", + "Helsinki" => "Europe/Helsinki", + "Kyev" => "Europe/Kiev", + "Riga" => "Europe/Riga", + "Sofia" => "Europe/Sofia", + "Tallinn" => "Europe/Tallinn", + "Vilnius" => "Europe/Vilnius", + "Athens" => "Europe/Athens", + "Istanbul" => "Europe/Istanbul", + "Minsk" => "Europe/Minsk", + "Jerusalem" => "Asia/Jerusalem", + "Harare" => "Africa/Harare", + "Pretoria" => "Africa/Johannesburg", + "Moscow" => "Europe/Moscow", + "St. Petersburg" => "Europe/Moscow", + "Volgograd" => "Europe/Moscow", + "Kuwait" => "Asia/Kuwait", + "Riyadh" => "Asia/Riyadh", + "Nairobi" => "Africa/Nairobi", + "Baghdad" => "Asia/Baghdad", + "Tehran" => "Asia/Tehran", + "Abu Dhabi" => "Asia/Muscat", + "Muscat" => "Asia/Muscat", + "Baku" => "Asia/Baku", + "Tbilisi" => "Asia/Tbilisi", + "Yerevan" => "Asia/Yerevan", + "Kabul" => "Asia/Kabul", + "Ekaterinburg" => "Asia/Yekaterinburg", + "Islamabad" => "Asia/Karachi", + "Karachi" => "Asia/Karachi", + "Tashkent" => "Asia/Tashkent", + "Chennai" => "Asia/Kolkata", + "Kolkata" => "Asia/Kolkata", + "Mumbai" => "Asia/Kolkata", + "New Delhi" => "Asia/Kolkata", + "Kathmandu" => "Asia/Katmandu", + "Astana" => "Asia/Dhaka", + "Dhaka" => "Asia/Dhaka", + "Sri Jayawardenepura" => "Asia/Dhaka", + "Almaty" => "Asia/Almaty", + "Novosibirsk" => "Asia/Novosibirsk", + "Rangoon" => "Asia/Rangoon", + "Bangkok" => "Asia/Bangkok", + "Hanoi" => "Asia/Bangkok", + "Jakarta" => "Asia/Jakarta", + "Krasnoyarsk" => "Asia/Krasnoyarsk", + "Beijing" => "Asia/Shanghai", + "Chongqing" => "Asia/Chongqing", + "Hong Kong" => "Asia/Hong_Kong", + "Urumqi" => "Asia/Urumqi", + "Kuala Lumpur" => "Asia/Kuala_Lumpur", + "Singapore" => "Asia/Singapore", + "Taipei" => "Asia/Taipei", + "Perth" => "Australia/Perth", + "Irkutsk" => "Asia/Irkutsk", + "Ulaan Bataar" => "Asia/Ulaanbaatar", + "Seoul" => "Asia/Seoul", + "Osaka" => "Asia/Tokyo", + "Sapporo" => "Asia/Tokyo", + "Tokyo" => "Asia/Tokyo", + "Yakutsk" => "Asia/Yakutsk", + "Darwin" => "Australia/Darwin", + "Adelaide" => "Australia/Adelaide", + "Canberra" => "Australia/Melbourne", + "Melbourne" => "Australia/Melbourne", + "Sydney" => "Australia/Sydney", + "Brisbane" => "Australia/Brisbane", + "Hobart" => "Australia/Hobart", + "Vladivostok" => "Asia/Vladivostok", + "Guam" => "Pacific/Guam", + "Port Moresby" => "Pacific/Port_Moresby", + "Magadan" => "Asia/Magadan", + "Solomon Is." => "Asia/Magadan", + "New Caledonia" => "Pacific/Noumea", + "Fiji" => "Pacific/Fiji", + "Kamchatka" => "Asia/Kamchatka", + "Marshall Is." => "Pacific/Majuro", + "Auckland" => "Pacific/Auckland", + "Wellington" => "Pacific/Auckland", + "Nuku'alofa" => "Pacific/Tongatapu" + }.each { |name, zone| name.freeze; zone.freeze } + MAPPING.freeze + end include Comparable attr_reader :name @@ -157,7 +160,7 @@ class TimeZone @utc_offset = utc_offset @tzinfo = tzinfo end - + def utc_offset @utc_offset ||= tzinfo.current_period.utc_offset end @@ -180,7 +183,7 @@ class TimeZone def to_s "(UTC#{formatted_offset}) #{name}" end - + # Method for creating new ActiveSupport::TimeWithZone instance in time zone of +self+ from given values. Example: # # Time.zone = "Hawaii" # => "Hawaii" @@ -199,7 +202,7 @@ class TimeZone utc = Time.at(secs).utc rescue DateTime.civil(1970).since(secs) utc.in_time_zone(self) end - + # Method for creating new ActiveSupport::TimeWithZone instance in time zone of +self+ from parsed string. Example: # # Time.zone = "Hawaii" # => "Hawaii" @@ -213,7 +216,7 @@ class TimeZone time = Time.parse(str, now) rescue DateTime.parse(str) ActiveSupport::TimeWithZone.new(nil, self, time) end - + # Returns an ActiveSupport::TimeWithZone instance representing the current time # in the time zone represented by +self+. Example: # @@ -228,12 +231,12 @@ class TimeZone tzinfo.now.to_date end - # Adjust the given time to the simultaneous time in the time zone represented by +self+. Returns a + # Adjust the given time to the simultaneous time in the time zone represented by +self+. Returns a # Time.utc() instance -- if you want an ActiveSupport::TimeWithZone instance, use Time#in_time_zone() instead. def utc_to_local(time) tzinfo.utc_to_local(time) end - + # Adjust the given time to the simultaneous time in UTC. Returns a Time.utc() instance. def local_to_utc(time, dst=true) tzinfo.local_to_utc(time, dst) @@ -248,12 +251,75 @@ class TimeZone def period_for_local(time, dst=true) tzinfo.period_for_local(time, dst) end - + + # TODO: Preload instead of lazy load for thread safety def tzinfo @tzinfo ||= TZInfo::Timezone.get(MAPPING[name]) end - @@zones = nil + unless const_defined?(:ZONES) + ZONES = [] + ZONES_MAP = {} + [[-39_600, "International Date Line West", "Midway Island", "Samoa" ], + [-36_000, "Hawaii" ], + [-32_400, "Alaska" ], + [-28_800, "Pacific Time (US & Canada)", "Tijuana" ], + [-25_200, "Mountain Time (US & Canada)", "Chihuahua", "Mazatlan", + "Arizona" ], + [-21_600, "Central Time (US & Canada)", "Saskatchewan", "Guadalajara", + "Mexico City", "Monterrey", "Central America" ], + [-18_000, "Eastern Time (US & Canada)", "Indiana (East)", "Bogota", + "Lima", "Quito" ], + [-14_400, "Atlantic Time (Canada)", "Caracas", "La Paz", "Santiago" ], + [-12_600, "Newfoundland" ], + [-10_800, "Brasilia", "Buenos Aires", "Georgetown", "Greenland" ], + [ -7_200, "Mid-Atlantic" ], + [ -3_600, "Azores", "Cape Verde Is." ], + [ 0, "Dublin", "Edinburgh", "Lisbon", "London", "Casablanca", + "Monrovia", "UTC" ], + [ 3_600, "Belgrade", "Bratislava", "Budapest", "Ljubljana", "Prague", + "Sarajevo", "Skopje", "Warsaw", "Zagreb", "Brussels", + "Copenhagen", "Madrid", "Paris", "Amsterdam", "Berlin", + "Bern", "Rome", "Stockholm", "Vienna", + "West Central Africa" ], + [ 7_200, "Bucharest", "Cairo", "Helsinki", "Kyev", "Riga", "Sofia", + "Tallinn", "Vilnius", "Athens", "Istanbul", "Minsk", + "Jerusalem", "Harare", "Pretoria" ], + [ 10_800, "Moscow", "St. Petersburg", "Volgograd", "Kuwait", "Riyadh", + "Nairobi", "Baghdad" ], + [ 12_600, "Tehran" ], + [ 14_400, "Abu Dhabi", "Muscat", "Baku", "Tbilisi", "Yerevan" ], + [ 16_200, "Kabul" ], + [ 18_000, "Ekaterinburg", "Islamabad", "Karachi", "Tashkent" ], + [ 19_800, "Chennai", "Kolkata", "Mumbai", "New Delhi" ], + [ 20_700, "Kathmandu" ], + [ 21_600, "Astana", "Dhaka", "Sri Jayawardenepura", "Almaty", + "Novosibirsk" ], + [ 23_400, "Rangoon" ], + [ 25_200, "Bangkok", "Hanoi", "Jakarta", "Krasnoyarsk" ], + [ 28_800, "Beijing", "Chongqing", "Hong Kong", "Urumqi", + "Kuala Lumpur", "Singapore", "Taipei", "Perth", "Irkutsk", + "Ulaan Bataar" ], + [ 32_400, "Seoul", "Osaka", "Sapporo", "Tokyo", "Yakutsk" ], + [ 34_200, "Darwin", "Adelaide" ], + [ 36_000, "Canberra", "Melbourne", "Sydney", "Brisbane", "Hobart", + "Vladivostok", "Guam", "Port Moresby" ], + [ 39_600, "Magadan", "Solomon Is.", "New Caledonia" ], + [ 43_200, "Fiji", "Kamchatka", "Marshall Is.", "Auckland", + "Wellington" ], + [ 46_800, "Nuku'alofa" ]]. + each do |offset, *places| + places.each do |place| + place.freeze + zone = new(place, offset) + ZONES << zone + ZONES_MAP[place] = zone + end + end + ZONES.sort! + ZONES.freeze + ZONES_MAP.freeze + end class << self alias_method :create, :new @@ -269,67 +335,7 @@ class TimeZone # TimeZone objects per time zone, in many cases, to make it easier # for users to find their own time zone. def all - unless @@zones - @@zones = [] - @@zones_map = {} - [[-39_600, "International Date Line West", "Midway Island", "Samoa" ], - [-36_000, "Hawaii" ], - [-32_400, "Alaska" ], - [-28_800, "Pacific Time (US & Canada)", "Tijuana" ], - [-25_200, "Mountain Time (US & Canada)", "Chihuahua", "Mazatlan", - "Arizona" ], - [-21_600, "Central Time (US & Canada)", "Saskatchewan", "Guadalajara", - "Mexico City", "Monterrey", "Central America" ], - [-18_000, "Eastern Time (US & Canada)", "Indiana (East)", "Bogota", - "Lima", "Quito" ], - [-14_400, "Atlantic Time (Canada)", "Caracas", "La Paz", "Santiago" ], - [-12_600, "Newfoundland" ], - [-10_800, "Brasilia", "Buenos Aires", "Georgetown", "Greenland" ], - [ -7_200, "Mid-Atlantic" ], - [ -3_600, "Azores", "Cape Verde Is." ], - [ 0, "Dublin", "Edinburgh", "Lisbon", "London", "Casablanca", - "Monrovia", "UTC" ], - [ 3_600, "Belgrade", "Bratislava", "Budapest", "Ljubljana", "Prague", - "Sarajevo", "Skopje", "Warsaw", "Zagreb", "Brussels", - "Copenhagen", "Madrid", "Paris", "Amsterdam", "Berlin", - "Bern", "Rome", "Stockholm", "Vienna", - "West Central Africa" ], - [ 7_200, "Bucharest", "Cairo", "Helsinki", "Kyev", "Riga", "Sofia", - "Tallinn", "Vilnius", "Athens", "Istanbul", "Minsk", - "Jerusalem", "Harare", "Pretoria" ], - [ 10_800, "Moscow", "St. Petersburg", "Volgograd", "Kuwait", "Riyadh", - "Nairobi", "Baghdad" ], - [ 12_600, "Tehran" ], - [ 14_400, "Abu Dhabi", "Muscat", "Baku", "Tbilisi", "Yerevan" ], - [ 16_200, "Kabul" ], - [ 18_000, "Ekaterinburg", "Islamabad", "Karachi", "Tashkent" ], - [ 19_800, "Chennai", "Kolkata", "Mumbai", "New Delhi" ], - [ 20_700, "Kathmandu" ], - [ 21_600, "Astana", "Dhaka", "Sri Jayawardenepura", "Almaty", - "Novosibirsk" ], - [ 23_400, "Rangoon" ], - [ 25_200, "Bangkok", "Hanoi", "Jakarta", "Krasnoyarsk" ], - [ 28_800, "Beijing", "Chongqing", "Hong Kong", "Urumqi", - "Kuala Lumpur", "Singapore", "Taipei", "Perth", "Irkutsk", - "Ulaan Bataar" ], - [ 32_400, "Seoul", "Osaka", "Sapporo", "Tokyo", "Yakutsk" ], - [ 34_200, "Darwin", "Adelaide" ], - [ 36_000, "Canberra", "Melbourne", "Sydney", "Brisbane", "Hobart", - "Vladivostok", "Guam", "Port Moresby" ], - [ 39_600, "Magadan", "Solomon Is.", "New Caledonia" ], - [ 43_200, "Fiji", "Kamchatka", "Marshall Is.", "Auckland", - "Wellington" ], - [ 46_800, "Nuku'alofa" ]]. - each do |offset, *places| - places.each do |place| - zone = create(place, offset) - @@zones << zone - @@zones_map[place] = zone - end - end - @@zones.sort! - end - @@zones + ZONES end # Locate a specific time zone object. If the argument is a string, it @@ -340,8 +346,7 @@ class TimeZone def [](arg) case arg when String - all # force the zones to be loaded - @@zones_map[arg] + ZONES_MAP[arg] when Numeric, ActiveSupport::Duration arg *= 3600 if arg.abs <= 13 all.find { |z| z.utc_offset == arg.to_i } @@ -352,7 +357,7 @@ class TimeZone # A regular expression that matches the names of all time zones in # the USA. - US_ZONES = /US|Arizona|Indiana|Hawaii|Alaska/ + US_ZONES = /US|Arizona|Indiana|Hawaii|Alaska/.freeze # A convenience method for returning a collection of TimeZone objects # for time zones in the USA.