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Islandora as an access system for iRODS managed information packages
Kilian AmrheinMarco Klindt
Zuse Institute Berlin (ZIB)
LTDP is too complex to be implemented by a single (small) institution!
2010
• Concept for digitization of cultural heritage in Berlin
2012
• Funding scheme
• Servicecenter Digitization (digiS) @ZIB
Digitization in Berlin
3
ZIB - Infrastructure
Tape Library• Peta-Scale• independent silos
“Konrad“• 1872 nodes• 44928 cores• 120TB RAM• 1.4 Pflop/s
Small photo by naezmi
Berlin‘s Cultural Heritage digitizedCC-BY-SA 3.0 DE: Berlinische Galerie – Zustiftung der Dr. Jörg Thiede-Stiftung
CC BY 3.0: StadtmuseumBerlin
PD: StadtmuseumBerlin
PD: StadtmuseumBerlin
CC-BY-SA: ZLB (Roehrensee)
CC BY-SA 4.0: HTW-Berlin Sammlungen
CC-BY-SA: Museum für Naturkunde Berlin
PD: ZLB
6
Collection / Creation
Processing
Analysis
Publishing
Preservation
Discovery and Re-use
Research Data
Photos by janneke staaks
ZIB LTDP Pipeline
Archivematica
• AIP/DIP Generation
iRODS
• abstraction of storage resources (online/offline)
• storage metadata
Fedora / Islandora
• data management
• access
Pre-
Inge
st
ZIB-LTDP Architecture
Access requirements
• Two views on objects:– administrative– content
• Access to iRODS– metadata– AIP retrieval
9
Different object viewsObject Display
Compound Object[PID]
Islandora Compound Object
RDF Statements (RELS-EXT)
Dublin Core (DC)
Thumbnail (TN)
Child[PID]
RDF Statements (RELS-EXT)
Dublin Core (DC)
Thumbnail (TN)
0-n
Content(JPG|XML|…)
11
Admin Access Compound Object
(AACO)
XML-child
DC
Content Access Compound Object
(CACO)
JPG-child
POLICY
PREMIS
RELS-EXT
TN
AIP-METS TN
DC(Submission-)DC
object type
datastream
JPGXML
DC
POLICY
PREMIS
RELS-EXT
POLICYRELS-EXT
POLICYRELS-EXT
12
Datastream structure
Info
rmati
on P
acka
ge
isConstituentOf
digiSzib:digisislandora:collectionCModel
Bröhan Museum Berlinzib:DE-MUS-019910islandora:collectionCModel
LABEL
ID
ContentModel
Digitization Project 2013 zib:bac186cd-4d11-48ac-bb1d-4ab2cd7593cc_aacoislandora:compoundCModel
Selfportrait with bananazib:bac186cd-4d11-48ac-bb1d-4ab2cd7593cc_jpgislandora:sp_large_image_cmodel
Selfportrait with bananazib:bac186cd-4d11-48ac-bb1d-4ab2cd7593cc_xmlislandora:sp_xml_cmodel
…
Info
rmati
on P
acka
ge
Selfportrait with banana
zib:bac186cd-4d11-48ac-bb1d-4ab2cd7593cc_caco
islandora:compoundCModel
… …
…
IDs & Collection assignment
isMemberOfCollection
isConstituentOf
Colle
ction
s
14
Views
Administrative Content
Compound Navigation Block
15
16
Access Control
• Drupal roles• access/manage role in RELS-EXT and XACML
StorageAIP access and delivery
Storage Metadata
iRODS can store metadata for data objects
18
AVUs defined for dataObj bac186cd-4d11-48ac-bb1d-4ab2cd7593cc.tar:
attribute: uuidvalue: bac186cd-4d11-48ac-bb1d-4ab2cd7593ccunits:---- attribute: producerIDvalue: DE-MUS-019910units: ----attribute: submissionIDvalue: DE-MUS-019910-201505131006units: ----attribute: checksumvalue: sha2:E4dMTd7/J4z9qg36CSjSzdXXIa4ltgAak+MKfSuPKww=units: ----attribute: lastFixityCheckvalue: 2015-05-13T08:06:16Zunits: ----attribute: typevalue: AIPunits:
Storage Abstraction
• AIPs managed by iRODS• need to be accessed through front end
• Retrieval:– AIP-uuid in iRODS metadata– reference in RELS-EXT of AACO
19
Islandora iRODS
20
Wrap up
22
Conclusion
• New data model – added support for different user views on a
preservation item
• New Islandora-module – (Basic) iRODS access
23
Future development
• Trigger preservation workflow actions from Islandora– migration– fixity check– metadata amendment
• Reporting– Total Objects– occupied storage
• Managing iRODS (resources)
24
Thanks!
https://github.com/kamrhein
[email protected]@zib.de
http://www.zib.de/sihttp://www.servicestelle-digitalisierung.de/
