Class: Bplmodels::File

Inherits:
ActiveFedora::Base
  • Object
show all
Includes:
ActiveFedora::Auditable, Characterization, Hydra::AccessControls::Permissions, Hydra::Derivatives, Hydra::ModelMethods
Defined in:
app/models/bplmodels/file.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Characterization

#append_metadata, #characterization_terms, #characterize, #duration, #fits_config_values, #height, #sample_rate, #width

Class Method Details

.mint(args) ⇒ Object

Expects the following args: parent_pid => id of the parent object local_id => local ID of the object local_id_type => type of that local ID label => label of the collection institution_pid => instituional access of this file



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# File 'app/models/bplmodels/file.rb', line 236

def self.mint(args)

  #TODO: Duplication check here to prevent over-writes?

  args[:namespace_id] ||= ARK_CONFIG_GLOBAL['namespace_commonwealth_pid']

  response = Typhoeus::Request.post(ARK_CONFIG_GLOBAL['url'] + "/arks.json", :params => {:ark=>{:parent_pid=>args[:parent_pid], :namespace_ark => ARK_CONFIG_GLOBAL['namespace_commonwealth_ark'], :namespace_id=>args[:namespace_id], :url_base => ARK_CONFIG_GLOBAL['ark_commonwealth_base'], :model_type => self.name, :local_original_identifier=>args[:local_id], :local_original_identifier_type=>args[:local_id_type]}})
  begin
    as_json = JSON.parse(response.body)
  rescue => ex
    raise('Error in JSON response for minting a file pid.')
  end

  #Below stopped working suddenly?
=begin
  dup_check = ActiveFedora::Base.find(:pid=>as_json["pid"])
  if dup_check.present?
    return as_json["pid"]
  end
=end


  Bplmodels::File.find_in_batches('id'=>as_json["pid"]) do |group|
    group.each { |solr_result|
      return as_json["pid"]
    }
  end

  object = self.new(:pid=>as_json["pid"])

  object.label = args[:label]

  object.read_groups = ["public"]
  object.edit_groups = ["superuser", "admin[#{args[:institution_pid]}]"]  if args[:institution_pid].present?

  object.workflowMetadata.item_ark_info.ark_id = args[:local_id]
  object.workflowMetadata.item_ark_info.ark_type = args[:local_id_type]
  object.workflowMetadata.item_ark_info.ark_parent_pid = args[:parent_pid]

  return object
end

Instance Method Details

#apply_default_permissions ⇒ Object 



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# File 'app/models/bplmodels/file.rb', line 46

def apply_default_permissions
  self.datastreams["rightsMetadata"].update_permissions( "group"=>{"Repository Administrators"=>"edit"} )
  self.save
end

#cache_invalidate ⇒ Object 



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# File 'app/models/bplmodels/file.rb', line 278

def cache_invalidate
  response = Typhoeus::Request.post(DERIVATIVE_CONFIG_GLOBAL['url'] + "/processor/objectcacheinvalidation.json", :params => {:file_pid=>self.pid, :environment=>Bplmodels.environment})
  as_json = JSON.parse(response.body)

  if as_json['result'] == "false"
    raise "Error Deleting the Cache! Server error!"
  end

  return true
end

#delete ⇒ Object 



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# File 'app/models/bplmodels/file.rb', line 38

def delete
  #FIXME: This should just not be hardcoded in AVI Processor
  if ActiveFedora.config.credentials[:url].match('fedora.digitalcommonwealth.org/fedora')
    #cache_invalidate
  end
  super()
end

#derivative_service(is_new) ⇒ Object 



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# File 'app/models/bplmodels/file.rb', line 217

def derivative_service(is_new)
  response = Typhoeus::Request.post(DERIVATIVE_CONFIG_GLOBAL['url'] + "/processor/byfile.json", :params => {:pid=>self.pid, :new=>is_new, :environment=>Bplmodels.environment})
  puts response.body.to_s
  as_json = JSON.parse(response.body)

  if as_json['result'] == "false"
    raise "Error Generating Derivatives For Object: " + pid
  end

  return true
end

#generate_derivatives ⇒ Object 



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# File 'app/models/bplmodels/file.rb', line 93

def generate_derivatives
  #Sample object on prod: https://fedora.digitalcommonwealth.org/fedora/objects/commonwealth:9w032896b/datastreams/productionMaster/content
  #Sample object from test book object: https://fedoratest.bpl.org/fedora/objects/bpl-test:rf55zp77f/datastreams/productionMaster/content
  case self.productionMaster.mimeType
    when 'application/pdf'
      #transform_datastream :productionMaster, { :thumb => "100x100>" }

      pdffile = Tempfile.new(['derivative','.pdf'])
      pdffile.binmode
      pdffile.write(self.productionMaster.content) #ActiveFedora.config.credentials[:url] + '/objects/' + self.pid + '/datastreams/productionMaster/content'
      pdffile.close

      current_page = 0
      total_colors = 0
      until total_colors > 1 do
        #Won't work... asks for login with the brackets...
        img = Magick::Image.read(pdffile.path + '[' + current_page.to_s + ']'){
          self.quality = 100
          self.density = 200
        }.first
        total_colors = img.total_colors
        current_page = current_page + 1
      end

      #This is horrible. But if you don't do this, some PDF files won't come out right at all.
      #Multiple attempts have failed to fix this but perhaps the bug will be patched in ImageMagick.
      #To duplicate, one can use the PDF files at: http://libspace.uml.edu/omeka/files/original/7ecb4dc9579b11e2b53ccc2040e58d36.pdf
      img = Magick::Image.from_blob( img.to_blob { self.format = "jpg" } ).first

      thumb = img.resize_to_fit(300,300)

      self.thumbnail300.content = thumb.to_blob { self.format = "jpg" }
      self.thumbnail300.mimeType = 'image/jpeg'
      self.thumbnail300.dsLabel = self.productionMaster.label

      pdffile.delete
    when 'audio/wav'
      #transform_datastream :productionMaster, { :mp3 => {format: 'mp3'}, :ogg => {format: 'ogg'} }, processor: :audio
    when 'video/avi'
      #transform_datastream :productionMaster, { :mp4 => {format: 'mp4'}, :webm => {format: 'webm'} }, processor: :video
    when 'image/tiff', 'image/png', 'image/jpg', 'image/png'
      begin
        transform_datastream :productionMaster, { :testJP2k => { recipe: :default, datastream: 'accessMaster'  } }, processor: 'jpeg2k_image'
      rescue => error
        # First one is from Blue Books collection. Second one is from commonwealth:xd07m887b
        if error.message.include?('compressed TIFF files') || error.message.include?("The number of colours associated with the colour space specified using")
=begin
          jp2_img = MiniMagick::Image.read(self.productionMaster.content) do |b|
            b.format "jp2"
          end
=end

          jp2_img = MiniMagick::Image.read(self.productionMaster.content)
          jp2_img.format 'jp2'
          self.accessMaster.content = jp2_img.to_blob
          self.accessMaster.mimeType = 'image/jp2'
          jp2_img.destroy!
        else
          raise error
        end
      end
      transform_datastream :productionMaster, { :thumb => {size: "300x300>", datastream: 'thumbnail300', format: 'jpg'} }
      transform_datastream :productionMaster, { :thumb => {size: "x800>", datastream: 'access800', format: 'jpg'} }
      self.accessMaster.dsLabel = self.productionMaster.label
      self.thumbnail300.dsLabel = self.productionMaster.label
      self.access800.dsLabel = self.productionMaster.label
    when 'image/jpeg' #FIXME
=begin
      jp2_img = MiniMagick::Image.read(self.productionMaster.content) do |b|
        b.format "jp2"
      end
=end

      jp2_img = MiniMagick::Image.read(self.productionMaster.content)
      jp2_img.format 'jp2'

      self.accessMaster.content = jp2_img.to_blob
      self.accessMaster.mimeType = 'image/jp2'
      jp2_img.destroy!

      transform_datastream :productionMaster, { :thumb => {size: "300x300>", datastream: 'thumbnail300', format: 'jpg'} }
      transform_datastream :productionMaster, { :thumb => {size: "x800>", datastream: 'access800', format: 'jpg'} }
      self.accessMaster.dsLabel = self.productionMaster.label
      self.thumbnail300.dsLabel = self.productionMaster.label
      self.access800.dsLabel = self.productionMaster.label
    when 'image/jp2'
      self.accessMaster.content = self.productionMaster.content
      self.accessMaster.mimeType = 'image/jp2'


=begin
      source_path = "#{ActiveFedora.config.credentials[:url]}/#{self.productionMaster.url}"
      image = MiniMagick::Image.open(source_path)
      quality = image['%[channels]'] == 'gray' ? 'gray' : 'color'
      long_dim = Hydra::Derivatives::Jpeg2kImage.long_dim(image)
      directives = { recipe: :default, datastream: 'accessMaster'  }
      recipe = Hydra::Derivatives::Jpeg2kImage.kdu_compress_recipe(directives, quality, long_dim)

      file_path = Hydra::Derivatives::Jpeg2kImage.tmp_file('.jp2')
      image.write file_path


      output_file = Hydra::Derivatives::Jpeg2kImage.tmp_file('.jp2')
      Hydra::Derivatives::Jpeg2kImage.encode(file_path, recipe, output_file)
      self.accessMaster.content = ::File.open(output_file)
      self.accessMaster.mimeType = 'image/jp2'
      #End wonky code

      #TODO: Move this to a function in Hydra Derivatives...
      self.save
      image.destroy!
      File.unlink(output_file)
      File.unlink(file_path)
=end


      transform_datastream :productionMaster, { :thumb => {size: "300x300>", datastream: 'thumbnail300', format: 'jpg'} }
      transform_datastream :productionMaster, { :thumb => {size: "x800>", datastream: 'access800', format: 'jpg'} }
      self.accessMaster.dsLabel = self.productionMaster.label
      self.thumbnail300.dsLabel = self.productionMaster.label
      self.access800.dsLabel = self.productionMaster.label


  end

end

#save ⇒ Object 



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# File 'app/models/bplmodels/file.rb', line 51

def save
  self.add_relationship(:has_model, "info:fedora/afmodel:Bplmodels_File")
  super()
end

#to_solr(doc = {}) ⇒ Object 



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# File 'app/models/bplmodels/file.rb', line 56

def to_solr(doc = {} )
  doc = super(doc)
  if self.workflowMetadata.marked_for_deletion.present?
    doc['marked_for_deletion_bsi']  =  self.workflowMetadata.marked_for_deletion.first
    doc['marked_for_deletion_reason_ssi']  =  self.workflowMetadata.marked_for_deletion.reason.first
  end

  if ['image/tiff', 'image/png', 'image/jpg', 'image/jp2'].include?(self.productionMaster.mimeType) and self.accessMaster.blank?
    doc['derivative_processsed_ssi'] = 'false'
  else
    doc['derivative_processsed_ssi'] = 'true'
  end

  if self.ocrMaster.present?
    doc['ocr_tsiv'] = Bplmodels::DatastreamInputFuncs.strip_value(self.ocrMaster.content.squish)
    doc['has_ocr_text_bsi'] = true
  end

  if self.pageMetadata.present?
    doc['page_type_ssi'] = self.pageMetadata.pageData.page.page_type.first
    doc['hand_side_ssi'] = self.pageMetadata.pageData.page.hand_side.first
    doc['page_num_label_ssi'] = self.pageMetadata.pageData.page.page_number.first if self.pageMetadata.pageData.page.page_number.present?
    doc['page_num_label_type_ssi'] = self.pageMetadata.pageData.page.page_number.sequence.first if self.pageMetadata.pageData.page.page_number.present?
    #doc['has_ocr_master_ssi'] = self.bookMetadata.book.page_data.page.has_ocrMaster.first
    #doc['has_djvu_json_ssi'] = self.bookMetadata.book.page_data.page.has_djvu.first

    if self.djvuCoords.present?
      doc['has_djvu_json_ssi'] = 'true'
    end
  end

  doc['checksum_file_md5_ssi'] = self.productionMaster.checksum

  doc

end