Class: Hyrax::Listeners::FileMetadataListener

Inherits:
Object
  • Object
show all
Defined in:
app/services/hyrax/listeners/file_metadata_listener.rb

Overview

Listens for events related to FileMetadata

Instance Method Summary collapse

Instance Method Details

#on_file_characterized(event) ⇒ void

This method returns an undefined value.

Called when ‘file.characterized’ event is published; allows post-characterization handling, like derivatives generation.

Parameters:

  • event (Dry::Events::Event) 


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# File 'app/services/hyrax/listeners/file_metadata_listener.rb', line 14

def on_file_characterized(event)
  file_set = event[:file_set]

  case file_set
  when ActiveFedora::Base # ActiveFedora
    CreateDerivativesJob
      .perform_later(file_set, event[:file_id], event[:path_hint])
  else
    ValkyrieCreateDerivativesJob
      .perform_later(file_set.id.to_s, event[:file_id])
  end
end

#on_file_metadata_updated(event) ⇒ void

This method returns an undefined value.

Called when ‘file.metadata.updated’ event is published; reindexes a FileSet when a file claiming to be its ‘pcdm_use:OriginalFile`

Parameters:

  • event (Dry::Events::Event) 


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# File 'app/services/hyrax/listeners/file_metadata_listener.rb', line 33

def on_file_metadata_updated(event)
  return unless event[:metadata].original_file?

  file_set = Hyrax.query_service.find_by(id: event[:metadata].file_set_id)
  Hyrax.index_adapter.save(resource: file_set)
rescue Valkyrie::Persistence::ObjectNotFoundError => err
  Hyrax.logger.warn "tried to index file with id #{event[:metadata].id} " \
                    "in response to an event of type #{event.id} but " \
                    "encountered an error #{err.message}. should this " \
                    "object be in a FileSet #{event[:metadata]}"
end

#on_file_uploaded(event) ⇒ void

This method returns an undefined value.

Called when ‘file.uploaded’ event is published

Parameters:

  • event (Dry::Events::Event) 


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# File 'app/services/hyrax/listeners/file_metadata_listener.rb', line 49

def on_file_uploaded(event)
  # Run characterization for original file only
  return unless event[:metadata]&.original_file?

  ValkyrieCharacterizationJob.perform_later(event[:metadata].id.to_s)
end