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PAWN: Producer-Archive Workflow Network University of Maryland Institute for Advanced Computer Studies Joseph Ja’Ja, Mike Smorul, Mike McGann
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Ingestion Process Producer: An organization or entity that creates records to be archived Record selection Package creation Transmission Validation Approval or rejection of package contents Storage into archival system
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What is PAWN? Software that provides an ingestion framework Handles the process From package assembly To archival storage Simple interface for end-users Flexible interface for archive managers Designed for use in multiple contexts
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Administration Overview Organizational hierarchy Record schedules User roles User accounts Record sets Authorize users Approve or reject submissions Push approved data to archival system
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Organization hierarchy Domains: Logical unit of administration and delegation Domain contains its own set of: Producers Record schedules Record sets Managers Each producer belongs to a domain. Each manager controls actions within a specific domain. Domains can contain additional subdivisions
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Example Domain: Department of Agriculture Division: Economic Research Service Division: Agricultural Marketing Service Division: Department of Defense Domain: Defense Logistics Agency Domain: Department of the Navy
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Record Schedules List of disposition authorities Contents of packages map to an authority Example: USGS Geospatial, Cartographic, Remote Sensing… Authority: Data Layers by USGS (1201-01c) Authority: Documentation (1201-01e)
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User Roles Determines availability of services Create record schedules? Create users? View packages? Reject or approve packages? Submit packages? Administrator, Records Creator, Records Liaison Officer, Records Manager
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Record Sets Producers are presented with record sets Logical archive units Map producer-friendly categories to archive-friendly disposition authorities Record set has a group of allowed users
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Example Record Set: Avian Point Counts Category: Tabular Data Maps to: Data Layers by USGS (1201-01c) Category: Vector Data Maps to: Data Layers by USGS (1201-01c) Category: FGDC Metadata Maps to: Documentation (1201-01e)
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Producer Workflow Overview Stage required data Select record set Use builder to assemble package Submit package to archive
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Package Builders Different builders can be used for different data Default builder provided Customized builders could: Automatically identify metadata Convert data or metadata Automatically structure data Example: ICDL Book builder
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Package Workflow Overview Manager views list of packages Newly received packages need approval Once approved, packages can be archived Rejected packages can be held until rectified or deleted for a resubmission Audit trail tracks all workflow steps
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More information Web site: http://www.umiacs.umd.edu/research/adapt Or “I’m feeling lucky” Google keywords: ADAPT UMIACS
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Components of PAWN Management server Receiving servers Scheduler Certificate authority Data grid for storage Client program for ingestion and administration
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Components of PAWN
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Management Server Users and authentication Record Schedules Submission agreements Permissions and authorization Package workflow progress
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Receiving Servers Entry point into archive Verifies integrity of submission package Send packages to validation services Holds packages before pushing to archive system
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Supporting Components Scheduler Tracks receiving servers Clients ask scheduler for an available receiving server Receiving servers ask scheduler for configuration information Certificate Authority Generates certificates for digital signatures
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Client Program User interface for the PAWN system Java web-start program Allows producers to create packages and send them to the receiving servers Allows managers to administrate and monitor the PAWN system
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Nuts and Bolts Java, Tomcat Web services (AXIS) METS SAML assertions X.509 Certificates Storage Resource Broker (SRB) Condor classad system
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