2020-05-13 14:08:47 -04:00
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# frozen_string_literal: true
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module DesignManagement
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# This service generates smaller image versions for `DesignManagement::Design`
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# records within a given `DesignManagement::Version`.
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class GenerateImageVersionsService < DesignService
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# We limit processing to only designs with file sizes that don't
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# exceed `MAX_DESIGN_SIZE`.
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#
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# Note, we may be able to remove checking this limit, if when we come to
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# implement a file size limit for designs, there are no designs that
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# exceed 40MB on GitLab.com
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#
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# See https://gitlab.com/gitlab-org/gitlab/-/merge_requests/22860#note_281780387
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MAX_DESIGN_SIZE = 40.megabytes.freeze
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def initialize(version)
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super(version.project, version.author, issue: version.issue)
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@version = version
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end
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def execute
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# rubocop: disable CodeReuse/ActiveRecord
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version.actions.includes(:design).each do |action|
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generate_image(action)
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end
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# rubocop: enable CodeReuse/ActiveRecord
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success(version: version)
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end
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private
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attr_reader :version
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def generate_image(action)
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raw_file = get_raw_file(action)
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unless raw_file
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log_error("No design file found for Action: #{action.id}")
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return
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end
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# Skip attempting to process images that would be rejected by CarrierWave.
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return unless DesignManagement::DesignV432x230Uploader::MIME_TYPE_WHITELIST.include?(raw_file.content_type)
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# Store and process the file
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action.image_v432x230.store!(raw_file)
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action.save!
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2020-10-01 11:10:05 -04:00
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rescue CarrierWave::IntegrityError => e
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Gitlab::ErrorTracking.log_exception(e, project_id: project.id, design_id: action.design_id, version_id: action.version_id)
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log_error(e.message)
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2020-05-13 14:08:47 -04:00
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rescue CarrierWave::UploadError => e
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Gitlab::ErrorTracking.track_exception(e, project_id: project.id, design_id: action.design_id, version_id: action.version_id)
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log_error(e.message)
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end
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# Returns the `CarrierWave::SanitizedFile` of the original design file
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def get_raw_file(action)
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raw_files_by_path[action.design.full_path]
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end
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# Returns the `Carrierwave:SanitizedFile` instances for all of the original
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# design files, mapping to { design.filename => `Carrierwave::SanitizedFile` }.
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#
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# As design files are stored in Git LFS, the only way to retrieve their original
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# files is to first fetch the LFS pointer file data from the Git design repository.
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# The LFS pointer file data contains an "OID" that lets us retrieve `LfsObject`
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# records, which have an Uploader (`LfsObjectUploader`) for the original design file.
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def raw_files_by_path
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@raw_files_by_path ||= begin
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LfsObject.for_oids(blobs_by_oid.keys).each_with_object({}) do |lfs_object, h|
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blob = blobs_by_oid[lfs_object.oid]
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file = lfs_object.file.file
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# The `CarrierWave::SanitizedFile` is loaded without knowing the `content_type`
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# of the file, due to the file not having an extension.
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#
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# Set the content_type from the `Blob`.
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file.content_type = blob.content_type
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h[blob.path] = file
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end
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end
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end
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# Returns the `Blob`s that correspond to the design files in the repository.
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#
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# All design `Blob`s are LFS Pointer files, and are therefore small amounts
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# of data to load.
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#
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# `Blob`s whose size are above a certain threshold: `MAX_DESIGN_SIZE`
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# are filtered out.
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def blobs_by_oid
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@blobs ||= begin
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items = version.designs.map { |design| [version.sha, design.full_path] }
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blobs = repository.blobs_at(items)
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blobs.reject! { |blob| blob.lfs_size > MAX_DESIGN_SIZE }
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blobs.index_by(&:lfs_oid)
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end
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end
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end
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end
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