waaay speed up Pet#translate_items
A few key changes: * Don't reload the whole pet 8 times!! Sooo many bad things happen, including redundant lookups of everything else and too many item saves and reindexes. Instead, fetch the item data, apply it to the items, and then save the items (once each!) * Updated my branch of globalize3 to be even better at avoiding redundant queries when saving. Woo. * Last realization: wrapping all the item saves in a single transaction works wonders. COMMIT seems to have high overhead, so doing only one took it from 50ms * 10 or whatever to 60ms. Good stuff.
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2 changed files with 74 additions and 45 deletions
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@ -46,7 +46,7 @@ GIT
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GIT
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remote: git://github.com/matchu/globalize3.git
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revision: c7cfc359f9fc8c283e45b3847ec9b9aaedff1d54
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revision: e23277864270131bbee29033f8a3abfb74ffe1f8
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specs:
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globalize3 (0.3.0)
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activemodel (>= 3.0.0)
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@ -1,4 +1,5 @@
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require 'rocketamf/remote_gateway'
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require 'ostruct'
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class Pet < ActiveRecord::Base
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GATEWAY_URL = 'http://www.neopets.com/amfphp/gateway.php'
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@ -21,9 +22,30 @@ class Pet < ActiveRecord::Base
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options[:locale] ||= I18n.default_locale
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I18n.with_locale(options[:locale]) do
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require 'ostruct'
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viewer_data = fetch_viewer_data
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pet_data = OpenStruct.new(viewer_data.custom_pet)
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self.pet_type = PetType.find_or_initialize_by_species_id_and_color_id(
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pet_data.species_id.to_i,
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pet_data.color_id.to_i
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)
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self.pet_type.body_id = pet_data.body_id
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self.pet_type.origin_pet = self
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biology = pet_data.biology_by_zone
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biology[0] = nil # remove effects if present
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@pet_state = self.pet_type.add_pet_state_from_biology! biology
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@pet_state.label_by_pet(self, pet_data.owner)
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@items = Item.collection_from_pet_type_and_registries(self.pet_type,
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viewer_data.object_info_registry, viewer_data.object_asset_registry,
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options[:item_scope])
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end
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true
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end
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def fetch_viewer_data
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begin
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neopets_language_code = I18n.compatible_neopets_language_code_for(options[:locale])
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neopets_language_code = I18n.compatible_neopets_language_code_for(I18n.locale)
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envelope = PET_VIEWER.request([name, 0]).post(
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:timeout => 2,
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:headers => {
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@ -38,29 +60,7 @@ class Pet < ActiveRecord::Base
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rescue RocketAMF::RemoteGateway::ConnectionError => e
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raise DownloadError, e.message
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end
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contents = OpenStruct.new(envelope.messages[0].data.body)
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pet_data = OpenStruct.new(contents.custom_pet)
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# in case this is running in a thread, explicitly grab an ActiveRecord
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# connection, to avoid connection conflicts
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Pet.connection_pool.with_connection do
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self.pet_type = PetType.find_or_initialize_by_species_id_and_color_id(
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pet_data.species_id.to_i,
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pet_data.color_id.to_i
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)
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self.pet_type.body_id = pet_data.body_id
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self.pet_type.origin_pet = self
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biology = pet_data.biology_by_zone
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biology[0] = nil # remove effects if present
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@pet_state = self.pet_type.add_pet_state_from_biology! biology
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@pet_state.label_by_pet(self, pet_data.owner)
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@items = Item.collection_from_pet_type_and_registries(self.pet_type,
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contents.object_info_registry, contents.object_asset_registry,
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options[:item_scope])
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end
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end
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true
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OpenStruct.new(envelope.messages[0].data.body)
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end
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def wardrobe_query
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@ -99,16 +99,45 @@ class Pet < ActiveRecord::Base
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candidates = self.item_translation_candidates
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until candidates.empty?
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last_pet_loaded = nil
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reloaded_pets = Parallel.map(candidates.keys, :in_threads => 8) do |locale|
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Rails.logger.info "Reloading #{name} in #{locale}"
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reloaded_pet = Pet.load(name, :item_scope => Item.includes(:translations),
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:locale => locale)
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last_pet_loaded = reloaded_pet
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# Organize known items by ID
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items_by_id = {}
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@items.each { |i| items_by_id[i.id] = i }
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# Fetch registry data in parallel
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registries = Parallel.map(candidates.keys, :in_threads => 8) do |locale|
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viewer_data = I18n.with_locale(locale) { fetch_viewer_data }
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[locale, viewer_data.object_info_registry]
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end
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reloaded_pets.each(&:save!)
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# Look up any newly applied items on this pet, just in case
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new_item_ids = []
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registries.each do |locale, registry|
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registry.each do |item_id, item_info|
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item_id = item_id.to_i
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new_item_ids << item_id unless items_by_id.has_key?(item_id)
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end
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end
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Item.includes(:translations).find(new_item_ids).each do |item|
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items_by_id[item.id] = item
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end
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# Apply translations, and figure out what items are currently being worn
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current_items = []
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registries.each do |locale, registry|
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I18n.with_locale(locale) do
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registry.each do |item_id, item_info|
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item = items_by_id[item_id.to_i]
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item.origin_registry_info = item_info
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current_items << item
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end
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end
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end
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@items = current_items
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Item.transaction { @items.each { |i| i.save! if i.changed? } }
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previous_candidates = candidates
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candidates = last_pet_loaded.item_translation_candidates
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candidates = item_translation_candidates
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if previous_candidates == candidates
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# This condition should never happen if Neopets responds with correct
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