Class: PushmiPullyu::AIP::Downloader
- Inherits:
-
Object
- Object
- PushmiPullyu::AIP::Downloader
- Defined in:
- lib/pushmi_pullyu/aip/downloader.rb
Overview
Download all of the metadata/datastreams and associated data related to an object
Defined Under Namespace
Classes: NoContentFilename, NoFileSets, NoMemberFiles, NoOriginalFile
Constant Summary collapse
- PREDICATE_URIS =
{ filename: 'http://purl.org/dc/terms/title', member_files: 'http://pcdm.org/models#hasFile', member_file_sets: 'http://pcdm.org/models#hasMember', original_file: 'http://pcdm.org/use#OriginalFile', type: 'http://www.w3.org/1999/02/22-rdf-syntax-ns#type' }.freeze
Instance Method Summary collapse
-
#initialize(noid, aip_directory) ⇒ Downloader
constructor
A new instance of Downloader.
- #run ⇒ Object
Constructor Details
#initialize(noid, aip_directory) ⇒ Downloader
Returns a new instance of Downloader.
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# File 'lib/pushmi_pullyu/aip/downloader.rb', line 23 def initialize(noid, aip_directory) @noid = noid @aip_directory = aip_directory end |
Instance Method Details
#run ⇒ Object
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# File 'lib/pushmi_pullyu/aip/downloader.rb', line 28 def run make_directories PushmiPullyu.logger.info("#{@noid}: Retreiving data from Fedora ...") # Main object metadata object_downloader = PushmiPullyu::AIP::FedoraFetcher.new(@noid) download_and_log(object_aip_paths[:main_object], object_downloader) # Construct the file ordering file list_source_uri = object_downloader.object_url + object_aip_paths.list_source.remote create_and_log_file_order_list(list_source_uri) member_file_set_uuids.each do |file_set_uuid| make_file_set_directories(file_set_uuid) # FileSet metadata file_set_downloader = PushmiPullyu::AIP::FedoraFetcher.new(file_set_uuid) path_spec = file_set_aip_paths(file_set_uuid)[:main_object] download_and_log(path_spec, file_set_downloader) # Find the original file by looping through the files in the file_set original_file_remote_base = nil member_files(file_set_uuid).each do |file_path| path_spec = OpenStruct.new( remote: "/files/#{file_path}/fcr:metadata", # Note: local file gets clobbered on each download until it finds the right one local: "#{file_set_dirs(file_set_uuid).}/original_file_metadata.n3", optional: true ) download_and_log(path_spec, file_set_downloader) if original_file?(path_spec.local) original_file_remote_base = "/files/#{file_path}" break end end raise NoOriginalFile unless original_file_remote_base.present? [:content, :fixity].each do |item| path_spec = file_aip_paths(file_set_uuid, original_file_remote_base)[item] download_and_log(path_spec, file_set_downloader) end end end |