Class: Replication::SdrObjectVersion

Inherits:
Moab::StorageObjectVersion
  • Object
show all
Defined in:
lib/replication/sdr_object_version.rb

Overview

Note:

Copyright © 2014 by The Board of Trustees of the Leland Stanford Junior University. All rights reserved. See LICENSE for details.

Instance Method Summary collapse

Instance Method Details

#catalog_object_data ⇒ Boolean

Returns Update digital_objects and sdr_objects tables in Archive Catalog.

Returns:

  • (Boolean) —

    Update digital_objects and sdr_objects tables in Archive Catalog



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# File 'lib/replication/sdr_object_version.rb', line 73

def catalog_object_data

  identity_metadata = parse_identity_metadata
  relationship_metadata = parse_relationship_metadata

  digital_object_data = {
      :digital_object_id => digital_object_id,
      :home_repository => 'sdr'
  }

  sdr_object_data = {
      :sdr_object_id => digital_object_id,
      :object_type => identity_metadata[:object_type].to_s[0..19],
      :object_label => identity_metadata[:object_label].to_s[0..99],
      :governing_object => relationship_metadata[:governed_by].to_s,
      :latest_version => storage_object.current_version_id
  }

  if version_id == 1
    ArchiveCatalog.add_or_update_item(:digital_objects,digital_object_data)
    ArchiveCatalog.add_or_update_item(:sdr_objects,sdr_object_data)
  else
    ArchiveCatalog.update_item(:sdr_objects, digital_object_id, sdr_object_data)
  end

  true
end

#catalog_version_data ⇒ Boolean

Returns Update sdr_object_versions and sdr_version_stats tables in Archive Catalog.

Returns:

  • (Boolean) —

    Update sdr_object_versions and sdr_version_stats tables in Archive Catalog



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# File 'lib/replication/sdr_object_version.rb', line 102

def catalog_version_data

  version_inventory = self.version_inventory
  sdr_object_version_data = {
      :sdr_object_id => digital_object_id,
      :sdr_version_id => version_id,
      :replica_id => composite_key,
      :ingest_date => version_inventory.inventory_datetime
  }
  ArchiveCatalog.add_or_update_item(:sdr_object_versions, sdr_object_version_data)


  content = version_inventory.group('content')
  metadata = version_inventory.group('metadata')
  raise "No metadata group found in version inventory" unless metadata
  sdr_version_full = {
      :sdr_object_id => digital_object_id,
      :sdr_version_id => version_id,
      :inventory_type => 'full',
      :content_files => (content ? content.file_count : 0),
      :content_bytes => (content ? content.byte_count : 0),
      :content_blocks => (content ? content.block_count : 0),
      :metadata_files => metadata.file_count,
      :metadata_bytes => metadata.byte_count,
      :metadata_blocks => metadata.block_count
  }
  ArchiveCatalog.add_or_update_item(:sdr_version_stats, sdr_version_full)

  version_additions = self.version_additions
  content = version_additions.group('content')
  metadata = version_additions.group('metadata')
  raise "No metadata group found in version additions" unless metadata
  sdr_version_delta = {
      :sdr_object_id => digital_object_id,
      :sdr_version_id => version_id,
      :inventory_type => 'delta',
      :content_files => (content ? content.file_count : 0),
      :content_bytes => (content ? content.byte_count : 0),
      :content_blocks => (content ? content.block_count : 0),
      :metadata_files => metadata.file_count,
      :metadata_bytes => metadata.byte_count,
      :metadata_blocks => metadata.block_count
  }
  ArchiveCatalog.add_or_update_item(:sdr_version_stats, sdr_version_delta)

  true
end

#create_replica ⇒ Replica

Returns Copy the object version into a BagIt Bag in tarfile format.

Returns:

  • (Replica) —

    Copy the object version into a BagIt Bag in tarfile format

Raises:



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# File 'lib/replication/sdr_object_version.rb', line 157

def create_replica
  replica = self.replica
  raise ReplicaExistsError if replica.bag_pathname.exist?
  bag = Archive::BagitBag.create_bag(replica.bag_pathname)
  bag.bag_checksum_types = [:sha256]
  bag.add_payload_tarfile("#{replica.replica_id}.tar",version_pathname, storage_object.object_pathname.parent)
  bag.write_bag_info_txt
  bag.write_manifest_checksums('tagmanifest', bag.generate_tagfile_checksums)
  replica.bagit_bag = bag
  replica
end

#digital_object_id ⇒ String

Returns The digital object’s identifier (druid).

Returns:

  • (String) —

    The digital object’s identifier (druid)



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# File 'lib/replication/sdr_object_version.rb', line 15

def digital_object_id
  storage_object.digital_object_id
end

#parse_identity_metadata ⇒ Hash

Returns The contents of the identityMetadata file.

Returns:

  • (Hash) —

    The contents of the identityMetadata file



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# File 'lib/replication/sdr_object_version.rb', line 42

def parse_identity_metadata
  metadata = Hash.new
  pathname = find_filepath('metadata', 'identityMetadata.xml')
  if pathname.exist?
    doc = Nokogiri::XML(pathname.read)
    nodeset = doc.xpath("/identityMetadata/objectType")
    metadata[:object_type] = nodeset.first.text unless nodeset.empty?
    nodeset = doc.xpath("/identityMetadata/objectLabel")
    metadata[:object_label] = nodeset.first.text unless nodeset.empty?
  end
  metadata
end

#parse_relationship_metadata ⇒ Hash

Returns The contents of the relationshipMetadata file.

Returns:

  • (Hash) —

    The contents of the relationshipMetadata file



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# File 'lib/replication/sdr_object_version.rb', line 56

def parse_relationship_metadata
  metadata = Hash.new
  pathname = find_filepath('metadata', 'relationshipMetadata.xml')
  if pathname.exist?
    doc = Nokogiri::XML(pathname.read)
    nodeset = doc.xpath("//hydra:isGovernedBy", 'hydra' => 'http://projecthydra.org/ns/relations#')
    unless nodeset.empty?
      apo_id = nodeset.first.attribute_with_ns('resource', 'http://www.w3.org/1999/02/22-rdf-syntax-ns#')
      if apo_id
        metadata[:governed_by] = apo_id.text.split('/')[-1]
      end
    end
  end
  metadata
end

#parse_version_metadata ⇒ Hash

Returns The contents of the versionMetadata file.

Returns:

  • (Hash) —

    The contents of the versionMetadata file



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# File 'lib/replication/sdr_object_version.rb', line 30

def parse_version_metadata
  metadata = Hash.new
  pathname = find_filepath('metadata', 'versionMetadata.xml')
  if pathname.exist?
    doc = Nokogiri::XML(pathname.read)
    nodeset = doc.xpath("/versionMetadata/version")
    metadata[:version_id] = nodeset.last['versionId'].to_i unless nodeset.empty?
  end
  metadata
end

#replica ⇒ Replica

Returns The Replica of the object version that is archived to tape, etc.

Returns:

  • (Replica) —

    The Replica of the object version that is archived to tape, etc



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# File 'lib/replication/sdr_object_version.rb', line 151

def replica
  Replica.new(composite_key.sub(/^druid:/,''), 'sdr')
end

#version_additions ⇒ Moab::FileInventory

Returns The moab version manifest for the version.

Returns:

  • (Moab::FileInventory) —

    The moab version manifest for the version



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# File 'lib/replication/sdr_object_version.rb', line 25

def version_additions
  file_inventory('additions')
end

#version_inventory ⇒ Moab::FileInventory

Returns The moab version manifest for the version.

Returns:

  • (Moab::FileInventory) —

    The moab version manifest for the version



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# File 'lib/replication/sdr_object_version.rb', line 20

def version_inventory
  file_inventory('version')
end