Module: Decidim::CarrierWaveMigratorService

Defined in:
lib/decidim/carrier_wave_migrator_service.rb

Constant Summary collapse

MIGRATION_ATTRIBUTES = 
{
  "Decidim::Organization" => lambda do
    [
      [Decidim::Attachment, "file", Decidim::Cw::AttachmentUploader, "file"],
      [Decidim::User, "avatar", Decidim::Cw::AvatarUploader, "avatar"],
      [Decidim::UserGroup, "avatar", Decidim::Cw::AvatarUploader, "avatar"],
      [Decidim::OAuthApplication, "organization_logo", Decidim::Cw::OAuthApplicationLogoUploader, "organization_logo"],
      [Decidim::Authorization, "verification_attachment", Decidim::Cw::Verifications::AttachmentUploader, "verification_attachment"],
      [Decidim::Organization, "official_img_header", Decidim::Cw::OfficialImageHeaderUploader, "official_img_header"],
      [Decidim::Organization, "official_img_footer", Decidim::Cw::OfficialImageFooterUploader, "official_img_footer"],
      [Decidim::Organization, "logo", Decidim::Cw::OrganizationLogoUploader, "logo"],
      [Decidim::Organization, "favicon", Decidim::Cw::OrganizationFaviconUploader, "favicon"],
      [Decidim::Organization, "highlighted_content_banner_image", Decidim::Cw::ImageUploader, "highlighted_content_banner_image"]
    ]
  end,
  "Decidim::Conference" => lambda do
    [
      [Decidim::Conference, "hero_image", Decidim::Cw::HeroImageUploader, "hero_image"],
      [Decidim::Conference, "banner_image", Decidim::Cw::HomepageImageUploader, "banner_image"],
      [Decidim::Conference, "main_logo", Decidim::Cw::Conferences::DiplomaUploader, "main_logo"],
      [Decidim::Conference, "signature", Decidim::Cw::Conferences::DiplomaUploader, "signature"],
      [Decidim::ConferenceSpeaker, "avatar", Decidim::Cw::AvatarUploader, "avatar"],
      [Decidim::Conferences::Partner, "logo", Decidim::Cw::Conferences::PartnerLogoUploader, "logo"]
    ]
  end,
  "Decidim::Consultation" => lambda do
    [
      [Decidim::Consultations::Question, "hero_image", Decidim::Cw::HeroImageUploader, "hero_image"],
      [Decidim::Consultations::Question, "banner_image", Decidim::Cw::BannerImageUploader, "banner_image"],
      [Decidim::Consultation, "banner_image", Decidim::Cw::BannerImageUploader, "banner_image"],
      [Decidim::Consultation, "introductory_image", Decidim::Cw::BannerImageUploader, "introductory_image"]
    ]
  end,
  "Decidim::Votings::Voting" => lambda do
    [
      [Decidim::Votings::Voting, "banner_image", Decidim::Cw::BannerImageUploader, "banner_image"],
      [Decidim::Votings::Voting, "introductory_image", Decidim::Cw::BannerImageUploader, "introductory_image"]
    ]
  end,
  "Decidim::ParticipatoryProcess" => lambda do
    [
      [Decidim::ParticipatoryProcess, "hero_image", Decidim::Cw::HeroImageUploader, "hero_image"],
      [Decidim::ParticipatoryProcess, "banner_image", Decidim::Cw::BannerImageUploader, "banner_image"],
      [Decidim::ParticipatoryProcessGroup, "hero_image", Decidim::Cw::HeroImageUploader, "hero_image"]
    ]
  end,
  "Decidim::Assembly" => lambda do
    [
      [Decidim::Assembly, "hero_image", Decidim::Cw::HeroImageUploader, "hero_image"],
      [Decidim::Assembly, "banner_image", Decidim::Cw::BannerImageUploader, "banner_image"]
    ]
  end,
  "Decidim::Initiative" => lambda do
    [
      [Decidim::InitiativesType, "banner_image", Decidim::Cw::BannerImageUploader, "banner_image"]
    ]
  end
}.sum do |main_model, attributes|
  main_model.constantize.is_a?(Class) ? attributes.call : []
rescue NameError
  []
end.freeze

Class Method Summary collapse

Class Method Details

.check_content_blocks_attachments(logger:) ⇒ Object 



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# File 'lib/decidim/carrier_wave_migrator_service.rb', line 70

def self.check_content_blocks_attachments(logger:)
  Decidim::ContentBlock.find_each do |block|
    next if block.images.blank?

    block.manifest.images.each do |image_config|
      attachment = cw_images_container(block).send(image_config[:name])
      destination = block.images_container.send(image_config[:name])

      next if attachment.file.blank?

      if destination.attached?
        attachment.cache_stored_file!
        file = cw_file(attachment)

        cw_checksum = downloaded_file_checksum(file)
        as_checksum = destination.blob.checksum

        logger.info "#{cw_checksum == as_checksum ? "[OK] Checksum identical:" : "[KO] Checksum different:"}" \
                    " Migrated Decidim::ContentBlock##{block.id} attachment #{image_config[:name]}" \
                    " from CW attribute #{image_config[:name]} to AS" \
                    " in Decidim::ContentBlockAttachment##{destination.record.id} file attribute"
      else
        logger.info "[SKIP] Pending migration of Decidim::ContentBlock##{block.id} attachment #{image_config[:name]}" \
                    " from CW attribute #{image_config[:name]} to AS" \
      end
    rescue StandardError
      logger.info "[ERROR] Exception checking Decidim::ContentBlock##{block.id} attachment #{image_config[:name]}" \
                  " from CW attribute #{image_config[:name]} to AS file attribute in a Decidim::ContentBlockAttachment instance #{$ERROR_INFO}"
    end
  end
end

.check_migration(klass:, cw_attribute:, cw_uploader:, logger:, as_attribute: cw_attribute) ⇒ Object

rubocop:enable Metrics/ParameterLists



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# File 'lib/decidim/carrier_wave_migrator_service.rb', line 194

def self.check_migration(klass:, cw_attribute:, cw_uploader:, logger:, as_attribute: cw_attribute)
  old_class = cw_attachments_class(klass, cw_attribute, cw_uploader)

  old_class.items.each do |item|
    next if item.send(cw_attribute).blank?

    copy = klass.find(item.id)

    if copy.send(as_attribute).attached?
      attachment = item.send(cw_attribute)
      attachment.cache_stored_file!
      file = cw_file(attachment)

      cw_checksum = downloaded_file_checksum(file)
      as_checksum = copy.send(as_attribute).blob.checksum

      logger.info "#{cw_checksum == as_checksum ? "[OK] Checksum identical:" : "[KO] Checksum different:"}" \
                  " Migrated #{klass}##{item.id} from CW attribute #{cw_attribute}" \
                  " to AS #{as_attribute} attribute"
    else
      logger.info "[SKIP] Pending migration of #{klass}##{item.id} from CW attribute #{cw_attribute} to AS #{as_attribute} attribute"
    end
  rescue StandardError
    logger.info "[ERROR] Exception checking #{klass}##{item.id} from CW attribute #{cw_attribute} to AS #{as_attribute} attribute #{$ERROR_INFO}"
  end
end

.cw_attachments_class(klass, cw_attribute, cw_uploader) ⇒ Object 



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# File 'lib/decidim/carrier_wave_migrator_service.rb', line 221

def self.cw_attachments_class(klass, cw_attribute, cw_uploader)
  has_sti = klass.column_names.include?(klass.inheritance_column)

  attachments_class = Class.new(ApplicationRecord) do
    cattr_accessor :klass

    self.table_name = klass.table_name

    if has_sti
      self.inheritance_column = nil
      scope :items, -> { where(type: klass.name) }
    else
      scope :items, -> { all }
    end
    mount_uploader cw_attribute, cw_uploader

    def self.to_s
      klass.to_s
    end
  end

  attachments_class.klass = klass
  attachments_class
end

.cw_file(attachment) ⇒ Object 



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# File 'lib/decidim/carrier_wave_migrator_service.rb', line 287

def self.cw_file(attachment)
  if attachment.file.is_a?(CarrierWave::Storage::Fog::File)
    URI.parse(attachment.url).open
  else
    File.open(attachment.file.file)
  end
end

.cw_images_container(block) ⇒ Object 



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# File 'lib/decidim/carrier_wave_migrator_service.rb', line 246

def self.cw_images_container(block)
  manifest = block.manifest
  images_container_class = Class.new do
    extend ::CarrierWave::Mount
    include ActiveModel::Validations

    cattr_accessor :manifest, :manifest_scope
    attr_reader :content_block

    delegate :id, :organization, to: :content_block

    def self.to_s
      "decidim/#{manifest.name.to_s.underscore}_#{manifest_scope.to_s.underscore}_content_block"
    end

    def initialize(content_block)
      @content_block = content_block
    end

    manifest.images.each do |image_config|
      mount_uploader image_config[:name], image_config[:uploader].gsub("Decidim::", "Decidim::Cw::").constantize
    end

    def read_uploader(column)
      content_block.images[column.to_s]
    end
  end

  images_container_class.manifest = block.manifest
  images_container_class.manifest_scope = block.scope_name
  images_container_class.new(block)
end

.downloaded_file_checksum(file) ⇒ Object 



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# File 'lib/decidim/carrier_wave_migrator_service.rb', line 279

def self.downloaded_file_checksum(file)
  if file.is_a?(StringIO)
    Digest::MD5.base64digest(file.read)
  else
    Digest::MD5.file(file).base64digest
  end
end

.migrate_attachment!(klass:, cw_attribute:, cw_uploader:, logger:, as_attribute: cw_attribute, routes_mappings: []) ⇒ Object

rubocop:disable Metrics/ParameterLists



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# File 'lib/decidim/carrier_wave_migrator_service.rb', line 151

def self.migrate_attachment!(klass:, cw_attribute:, cw_uploader:, logger:, as_attribute: cw_attribute, routes_mappings: [])
  old_class = cw_attachments_class(klass, cw_attribute, cw_uploader)

  old_class.items.each do |item|
    next if item.send(cw_attribute).blank?

    copy = klass.find(item.id)
    # Skip record if already been processed
    if copy.send(as_attribute).attached?
      logger.info "[SKIP] Migrated #{klass}##{item.id} from CW attribute #{cw_attribute} to AS #{as_attribute} attribute"
      next
    end

    attachment = item.send(cw_attribute)
    origin_path = attachment.url
    attachment.cache_stored_file!
    content_type = attachment.content_type
    filename = item.attributes[cw_attribute.to_s]
    file = cw_file(attachment)
    copy.send(as_attribute).attach(
      io: file,
      content_type: content_type,
      filename: filename
    )

    cw_checksum = downloaded_file_checksum(file)
    as_checksum = copy.send(as_attribute).blob.checksum

    logger.info "[OK] Migrated - #{cw_checksum == as_checksum ? "[OK] Checksum identical:" : "[KO] Checksum different:"}" \
                " #{klass}##{item.id} from CW attribute #{cw_attribute} to AS #{as_attribute} attribute"

    routes_mappings << {
      instance: "#{klass}##{item.id}",
      attachment_origin_attribute: cw_attribute.to_s,
      origin_path: origin_path,
      destination_path: Rails.application.routes.url_helpers.rails_blob_url(copy.send(as_attribute).blob, only_path: true)
    }
  rescue StandardError
    logger.info "[ERROR] Exception migrating #{klass}##{item.id} from CW attribute #{cw_attribute} to AS #{as_attribute} attribute #{$ERROR_INFO}"
  end
end

.migrate_content_blocks_attachments!(logger:, routes_mappings: []) ⇒ Object 



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# File 'lib/decidim/carrier_wave_migrator_service.rb', line 102

def self.migrate_content_blocks_attachments!(logger:, routes_mappings: [])
  Decidim::ContentBlock.find_each do |block|
    next if block.images.blank?

    block.manifest.images.each do |image_config|
      destination = block.images_container.send(image_config[:name])

      if destination.attached?
        logger.info "[SKIP] Migrated Decidim::ContentBlock##{block.id} attachment #{image_config[:name]}" \
                    " from CW attribute #{image_config[:name]} to AS" \
                    " in Decidim::ContentBlockAttachment##{destination.record.id} file attribute"
        next
      end

      attachment = cw_images_container(block).send(image_config[:name])
      next if attachment.file.blank?

      origin_path = attachment.url
      attachment.cache_stored_file!
      content_type = attachment.content_type
      filename = block.images[image_config[:name].to_s]
      file = cw_file(attachment)
      destination.attach(
        io: file,
        content_type: content_type,
        filename: filename
      )
      destination.record.save if destination.record.new_record?

      cw_checksum = downloaded_file_checksum(file)
      as_checksum = destination.blob.checksum

      logger.info "[OK] Migrated - #{cw_checksum == as_checksum ? "[OK] Checksum identical:" : "[KO] Checksum different:"}" \
                  " Decidim::ContentBlock##{block.id} attachment #{image_config[:name]}" \
                  " from CW attribute #{image_config[:name]} to AS" \
                  " in Decidim::ContentBlockAttachment##{destination.record.id} file attribute" \

      routes_mappings << { instance: "Decidim::ContentBlock##{block.id}",
                           attachment_origin_attribute: image_config[:name],
                           origin_path: origin_path,
                           destination_path: Rails.application.routes.url_helpers.rails_blob_url(destination.blob, only_path: true) }
    rescue StandardError
      logger.info "[ERROR] Exception migrating Decidim::ContentBlock##{block.id} attachment #{image_config[:name]}" \
                  " from CW attribute #{image_config[:name]} to AS file attribute in a Decidim::ContentBlockAttachment instance #{$ERROR_INFO}"
    end
  end
end