Class: ExportJob

Inherits:
ApplicationJob
  • Object
show all
Defined in:
app/jobs/export_job.rb

Overview

ExportJob

Instance Method Summary collapse

Instance Method Details

#crawl_query(request, query_params, doc_ids = []) ⇒ Object 



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# File 'app/jobs/export_job.rb', line 87

def crawl_query(request, query_params, doc_ids = [])
  logger.debug("\n\n CRAWL Query: #{query_params}")
  logger.debug("\n\n CRAWL Query Request: #{request}")
  api_results = BlacklightApiIds.new(request, query_params)
  logger.debug("API Results: #{api_results.results.inspect}")

  doc_ids << api_results.results.pluck("id")

  unless api_results.meta["pages"]["next_page"].nil?
    crawl_query(request, query_params.merge!({page: api_results.meta["pages"]["next_page"]}),
      doc_ids)
  end

  doc_ids
end

#perform(request, current_user, query_params, export_service) ⇒ Object 



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# File 'app/jobs/export_job.rb', line 10

def perform(request, current_user, query_params, export_service)
  logger.debug("\n\n Background Job: ♞")
  logger.debug("Request: #{request.inspect}")
  logger.debug("User: #{current_user.inspect}")
  logger.debug("Query: #{query_params.inspect}")
  logger.debug("Export Service: #{export_service.inspect}")
  logger.debug("\n\n")

  # Test broadcast
  ActionCable.server.broadcast("export_channel", {data: "Hello from Export Job!"})

  # Query params into Doc ids
  document_ids = query_params[:ids] || crawl_query(request, query_params)

  logger.debug("Document Ids: #{document_ids}")

  # Send progress
  file_content_documents = export_service.call(document_ids)
  file_content_document_distributions = ExportCsvDocumentDistributionsService.call(document_ids)

  # Write Documents into tempfile
  @tempfile_documents = Tempfile.new(["documents-#{Time.zone.today}", ".csv"]).tap do |file|
    CSV.open(file, "wb") do |csv|
      file_content_documents.each do |row|
        csv << row
      end
    end
    logger.debug("Tempfile Documents Path: #{file.path}")
    logger.debug("Tempfile Documents Size: #{File.size(file.path)} bytes")
  end

  # Write DocumentDistributions into tempfile
  @tempfile_document_distributions = Tempfile.new(["document-distributions-#{Time.zone.today}", ".csv"]).tap do |file|
    CSV.open(file, "wb") do |csv|
      file_content_document_distributions.each do |row|
        csv << row
      end
    end
    logger.debug("Tempfile Document Distributions Path: #{file.path}")
    logger.debug("Tempfile Document Distributions Size: #{File.size(file.path)} bytes")
  end

  # Create a zip file containing both tempfiles
  zipfile_name = "export-#{Time.zone.today}.zip"
  tmp_dir = Rails.root.join("tmp")
  @tempfile_zip = Tempfile.new([zipfile_name, ".zip"], tmp_dir)

  Zip::File.open(@tempfile_zip.path, Zip::File::CREATE) do |zipfile|
    zipfile.add("documents.csv", @tempfile_documents.path)
    zipfile.add("document-distributions.csv", @tempfile_document_distributions.path)
  end
  logger.debug("Zipfile Path: #{@tempfile_zip.path}")
  logger.debug("Zipfile Size: #{File.size(@tempfile_zip.path)} bytes")

  # Create notification
  # Message: "Download Type|Row Count|Button Label"
  notification = ExportNotification.with(message: "ZIP (#{export_service.short_name})|#{ActionController::Base.helpers.number_with_delimiter(file_content_documents.size - 1)} rows|ZIP")

  # Deliver notification
  notification.deliver(current_user)

  # Attach ZIP file (can only attach after persisted)
  notification.record.file.attach(io: File.open(@tempfile_zip), filename: zipfile_name,
    content_type: "application/zip")

  # Update UI
  ActionCable.server.broadcast("export_channel", {
    data: "Notification ready!",
    actions: [
      {
        method: "RefreshNotifications",
        payload: current_user.notifications.unread.count
      }
    ]
  })
end