Emi Matchu
fb2bdd6ea5
First off, I think our code has converged on a convention of gracefully returning `nil` for manifest-less situations, so we can do that instead of raise! And then that lets us just simplify this check to whether `manifest` is present, instead of `manifest_url`, so we stop crashing in cases where we get to this point in the code and there's a manifest URL but not a manifest.
340 lines
11 KiB
Ruby
340 lines
11 KiB
Ruby
require 'addressable/template'
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require 'async'
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require 'async/barrier'
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require 'async/semaphore'
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require 'fileutils'
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require 'uri'
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class SwfAsset < ApplicationRecord
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# We use the `type` column to mean something other than what Rails means!
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self.inheritance_column = nil
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# Used in `item_is_body_specific?`. (TODO: Could we refactor this out?)
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attr_accessor :item
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belongs_to :zone
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has_many :parent_swf_asset_relationships
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has_one :contribution, :as => :contributed, :inverse_of => :contributed
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has_many :parent_swf_asset_relationships
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before_validation :normalize_manifest_url, if: :manifest_url?
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delegate :depth, :to => :zone
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scope :biology_assets, -> { where(:type => PetState::SwfAssetType) }
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scope :object_assets, -> { where(:type => Item::SwfAssetType) }
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CANVAS_MOVIE_IMAGE_URL_TEMPLATE = Addressable::Template.new(
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Rails.configuration.impress_2020_origin +
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"/api/assetImage{?libraryUrl,size}"
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)
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LEGACY_IMAGE_URL_TEMPLATE = Addressable::Template.new(
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"https://aws.impress-asset-images.openneo.net/{type}" +
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"/{id1}/{id2}/{id3}/{id}/{size}x{size}.png?v2-{time}"
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)
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def as_json(options={})
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super({
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only: [:id, :known_glitches],
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methods: [:zone, :restricted_zones, :urls]
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}.merge(options))
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end
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def urls
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{
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swf: url,
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png: image_url,
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svg: manifest_asset_urls[:svg],
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canvas_library: manifest_asset_urls[:js],
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manifest: manifest_url,
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}
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end
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def manifest
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@manifest ||= load_manifest
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end
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def preload_manifest(save_changes: true)
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load_manifest(return_content: false, save_changes:)
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end
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def load_manifest(return_content: true, save_changes: true)
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return nil if manifest_url.blank?
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# If we recently tried loading the manifest and got a 4xx HTTP status code
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# (e.g. a 404, there's a surprising amount of these!), don't try again. But
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# after enough time passes, if this is called again, we will!
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#
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# (We always retry 5xx errors, on the assumption that they probably
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# represent intermittent failures, whereas 4xx errors are not likely to
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# succeed just by retrying.)
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if manifest_loaded_at.present?
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last_try_was_4xx =(400...500).include?(manifest_status_code)
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last_try_was_recent = (Time.now - manifest_loaded_at) <= 1.day
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if last_try_was_4xx and last_try_was_recent
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Rails.logger.debug "Skipping loading manifest for asset #{id}: " +
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"last try was status #{manifest_status_code} at #{manifest_loaded_at}"
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return nil
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end
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end
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begin
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NeopetsMediaArchive.load_file(manifest_url, return_content:) =>
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{content:, source:}
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rescue NeopetsMediaArchive::ResponseNotOK => error
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Rails.logger.warn "Failed to load manifest for asset #{id}: " +
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error.message
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self.manifest_loaded_at = Time.now
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self.manifest_status_code = error.status
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save! if save_changes
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return nil
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end
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if source == "network" || manifest_loaded_at.blank?
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self.manifest_loaded_at = Time.now
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self.manifest_status_code = 200
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save! if save_changes
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end
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return nil unless return_content
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begin
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JSON.parse(content)
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rescue JSON::ParserError => error
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Rails.logger.warn "Failed to parse manifest for asset #{id}: " +
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error.message
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return nil
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end
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end
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MANIFEST_BASE_URL = Addressable::URI.parse("https://images.neopets.com")
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def manifest_asset_urls
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return {} unless manifest.present?
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begin
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# Organize the asset URLs by file extension, convert them from paths to
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# full URLs, and grab the ones we want.
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assets_by_ext = manifest["cpmanifest"]["assets"][0]["asset_data"].
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group_by { |a| a["file_ext"].to_sym }.
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transform_values do |assets|
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assets.map { |a| (MANIFEST_BASE_URL + a["url"]).to_s }
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end
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if assets_by_ext[:js].present?
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# If a JS asset is present, assume any other assets are supporting
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# assets, and skip them. (e.g. if there's a PNG, it's likely to be an
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# "atlas" file used in the animation, rather than a thumbnail.)
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#
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# NOTE: We take the last one, because sometimes there are multiple JS
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# assets in the same manifest, and earlier ones are broken and later
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# ones are fixed. I don't know the logic exactly, but that's what we've
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# seen!
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{ js: assets_by_ext[:js].last }
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else
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# Otherwise, return the last PNG and the last SVG, arbitrarily.
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# (There's probably only one of each! I'm just going by the same logic
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# we've seen in the JS library case, that later entries are more likely
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# to be correct.)
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{
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png: assets_by_ext.fetch(:png, []).last,
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svg: assets_by_ext.fetch(:svg, []).last,
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}
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end
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rescue StandardError => error
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Rails.logger.error "Could not read URLs from manifest: #{error.full_message}"
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return {}
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end
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end
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def image_url
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# Use the PNG image from the manifest, if one exists.
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return manifest_asset_urls[:png] if manifest_asset_urls[:png].present?
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# Or, if this is a canvas movie, let Impress 2020 generate a PNG for us.
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return canvas_movie_image_url if manifest_asset_urls[:js].present?
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# Otherwise, if we don't have the manifest or it doesn't have the files we
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# need, fall back to the Classic DTI image storage, which was generated
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# from the SWFs via an old version of gnash (or sometimes manually
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# overridden). It's less accurate, but well-tested to generally work okay,
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# and it's the only image we have for assets not yet converted to HTML5.
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#
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# NOTE: We've stopped generating these images for new assets! This is
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# mainly for old assets not yet converted to HTML5.
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#
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# NOTE: If you're modeling from a fresh development database, `has_image?`
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# might be false even though we *do* have a saved copy of the image
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# available in production. But if you're using the public modeling
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# data exported from production, then this check should be fine!
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#
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# TODO: Rename `has_image?` to `has_legacy_image?`.
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return legacy_image_url if has_image?
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# Otherwise, there's no image URL.
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nil
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end
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def canvas_movie_image_url
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return nil unless manifest_asset_urls[:js]
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CANVAS_MOVIE_IMAGE_URL_TEMPLATE.expand(
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libraryUrl: manifest_asset_urls[:js],
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size: 600,
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).to_s
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end
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def legacy_image_url
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return nil unless has_image?
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padded_id = remote_id.to_s.rjust(12, "0")
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LEGACY_IMAGE_URL_TEMPLATE.expand(
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type: type,
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id1: padded_id[0...3],
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id2: padded_id[3...6],
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id3: padded_id[6...9],
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id: remote_id,
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size: "600",
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time: converted_at.to_i,
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).to_s
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end
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def known_glitches
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self[:known_glitches].split(',')
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end
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def known_glitches=(new_known_glitches)
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if new_known_glitches.is_a? Array
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new_known_glitches = new_known_glitches.join(',')
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end
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self[:known_glitches] = new_known_glitches
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end
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def restricted_zone_ids
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[].tap do |ids|
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zones_restrict.chars.each_with_index do |bit, index|
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ids << index + 1 if bit == "1"
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end
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end
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end
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def restricted_zones
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Zone.where(id: restricted_zone_ids)
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end
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def body_specific?
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self.zone.type_id < 3 || item_is_body_specific?
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end
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def item_is_body_specific?
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# Get items that we're already bound to in the database, and
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# also the one passed to us from the current modeling operation,
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# if any.
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#
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# NOTE: I know this has perf impact... it would be better for
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# modeling to preload this probably? But oh well!
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items = parent_swf_asset_relationships.includes(:parent).where(parent_type: "Item").map { |r| r.parent }
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items << item if item
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# Return whether any of them is known to be body-specific.
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# This ensures that we always respect the explicitly_body_specific flag!
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return items.any? { |i| i.body_specific? }
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end
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def origin_pet_type=(pet_type)
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self.body_id = pet_type.body_id
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end
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def origin_biology_data=(data)
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Rails.logger.debug("my biology data is: #{data.inspect}")
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self.type = 'biology'
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self.zone_id = data[:zone_id].to_i
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self.url = data[:asset_url]
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self.zones_restrict = data[:zones_restrict]
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self.manifest_url = data[:manifest]
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end
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def origin_object_data=(data)
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Rails.logger.debug("my object data is: #{data.inspect}")
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self.type = 'object'
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self.zone_id = data[:zone_id].to_i
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self.url = data[:asset_url]
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self.zones_restrict = ""
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self.manifest_url = data[:manifest]
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end
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def normalize_manifest_url
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parsed_manifest_url = Addressable::URI.parse(manifest_url)
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parsed_manifest_url.scheme = "https"
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self.manifest_url = parsed_manifest_url.to_s
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end
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# To manually change the body ID without triggering the usual change to 0,
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# use this override method. (This is intended for use from the console.)
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def override_body_id(new_body_id)
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@body_id_overridden = true
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self.body_id = new_body_id
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end
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def self.from_biology_data(body_id, data)
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remote_id = data[:part_id].to_i
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swf_asset = SwfAsset.find_or_initialize_by type: 'biology',
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remote_id: remote_id
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swf_asset.body_id = body_id
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swf_asset.origin_biology_data = data
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swf_asset
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end
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def self.from_wardrobe_link_params(ids)
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where((
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arel_table[:remote_id].in(ids[:biology]).and(arel_table[:type].eq('biology'))
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).or(
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arel_table[:remote_id].in(ids[:object]).and(arel_table[:type].eq('object'))
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))
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end
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# Given a list of SWF assets, ensure all of their manifests are loaded, with
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# fast concurrent execution!
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def self.preload_manifests(swf_assets)
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# Blocks all tasks beneath it.
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barrier = Async::Barrier.new
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Sync do
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# Only allow 10 manifests to be loaded at a time.
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semaphore = Async::Semaphore.new(10, parent: barrier)
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# Load all the manifests in async tasks. This will load them 10 at a time
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# rather than all at once (because of the semaphore), and the
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# NeopetsMediaArchive will share a pool of persistent connections for
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# them.
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swf_assets.map do |swf_asset|
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semaphore.async do
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begin
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# Don't save changes in this big async situation; we'll do it all
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# in one batch after, to avoid too much database concurrency!
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swf_asset.preload_manifest(save_changes: false)
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rescue StandardError => error
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Rails.logger.error "Could not preload manifest for asset " +
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"#{swf_asset.id} (#{swf_asset.manifest_url}): #{error.message}"
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end
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end
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end
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# Wait until all tasks are done.
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barrier.wait
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ensure
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barrier.stop # If something goes wrong, clean up all tasks.
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end
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SwfAsset.transaction do
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swf_assets.each(&:save!)
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end
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end
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before_save do
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# If an asset body ID changes, that means more than one body ID has been
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# linked to it, meaning that it's probably wearable by all bodies.
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self.body_id = 0 if !@body_id_overridden && (!self.body_specific? || (!self.new_record? && self.body_id_changed?))
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end
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class DownloadError < Exception;end
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end
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