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DevelopinganationalPIDManagementSystem
FranciscoJLopez-Pellicer (IAAA-UNIZAR)
Jesús Barrera(GEOSLAB)
JuliánGonzález(CNIG)
F.JavierZarazaga-Soria(IAAA-UNIZAR)
EmilioLópez (CNIG)
PalomaAbad(CNIG)
AntonioF.Rodriguez(CNIG)
AproposalforSpain
Parallel Session: Technologies and ToolsSeptember 6, 2017
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PIDchallenges• INSPIRErecommendstouseURIsinthehttpscheme•
SpatialObject&Datasets• Sharedresources
• INSPIRErecommendstosupportdereferencing•
...butisnotgoingtoorganise theURIframework
.zip
.gml
Spatial object
Dataset
Web browser
Web browser
GML file
Zipped SHP
Downloadservice
Downloadservice
URIframework
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Dataproducers
Blueprintforanationalsolution• Businessview
• Governing committee• Technicalsecretariat•
Proceduresandpolicies
• Technicalview• NamespaceCentralRegistry• AutomatedPIDRegistry•
PIDresolverservice
.zip
.gml
Spatial object
Dataset
Web browser
Web browser
GML file
Zipped SHP
Downloadservice
Downloadservice
Namespaceregistry
PIDCommittee
Datausers
PIDregistry
PIDresolver
URIframework
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Ourproposal:BusinessView• GoverningCommittee
• MembersfromIDEEWGandCODIIGE(SpanishGIgoverningboard)•
Strategicdecisions• Applicationscope
• TechnicalSecretariat• IGN• Technical/operativedecisions•
Infrastructuremaintenance
• Relevantstakeholders•
Dataproviderswithlocalregistries(volume,complexity,norm…)•
Commercialsearchenginesà PIDdissemination
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Ourproposal:TechnicalView• INSPIREPIDURIschemaproposal
•
https://datos.idee.es/recurso/{namespace}/{localId}[/{versionId}]
• NamespaceCentralRegistry(a.k.a.“NamespaceRegistry”)•
What:namespacesandsources(downloadservices,localregistries)•
Who:owners
• AutomatedPIDRegistry(a.k.a.“PIDRegistry”)•
What:resourceswithPID•
How:harvestingregisteredsourcesINSPIREatNamespaceRegistry
• PIDResolverService(a.k.a.“PIDResolver”)•
What:resolvesregisteredPIDrequests•
How:looksupPIDatPIDRegistryandredirectstothesource
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Usecase:namespaceregistry• A dataprovider requests
toberegisteredinNamespaceRegistry
• TheTechnicalSecretariatverifies theapplication
• The dataprovider registers
inNamespaceRegistrythenamespace“administrative-units”(administrativeboundarydata)
• PIDRegistryharvests allspatialobjectswithinthesource
• PIDRegistryprocesses eachspatialobjectfoundandmints aPID
• PIDRegistrypublishes ontheweballmintedPID plusmetadata
NR
NR
NR
PRg
PRg
PRg
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Usecase:discoveryanddereferencing• Googlebot
indexesallthedatapublishedbyPIDRegistry
• Anentrepreneur discoversthesePIDsatGoogle
andaddsthemintoanappthatusestheboundariesoftheSpanishmunicipalities
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TheappatruntimedereferencesthehttpPIDthatidentifiestheboundaries
ofamunicipality
• ThePIDResolverlooksup thePIDRegistry
• PIDResolverreturns
aGETKVPWFSrequesttothesourcethatwillreturnageometry encodedinGML•
Content negotiationforotherformats• Proxy
whensourcedoesnotsupportaGETKVPWFSrequest• Cache
toreducelatencyandtraffic
PRs
PRs
PRs PRg
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Usecase:monitoringanddataquality•
TheTechnicalSecretariatusesPIDRegistrytomonitoringeachsourcecompliancewithPID
governingrules
• TheTechnicalSecretariatdiscoversthatPIDsin
thenamespace“administrative-units”arenotpersistentandnotifies
theissuetothenamespaceowner
• Theentrepreneur
discoverssomeglitchesinitsappduetodataqualityissuesinthenamespace“administrative-units”
• Theentrepreneur
looksuptheNamespaceRegistryforthenamespaceownerandthennotifies
theissuetohim
PRg
NR
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Usecase:resilience•
Ayearlater,duetoanadministrativereorganization,theownershipoftheistransferred
toadifferententity
• Thenewownerplantoupgrade theWFSinfrastructureandmove
toanewdomain
• Thechangeofownershipisreported
totheTechnicalSecretariatandtheownership istransferred
intheNamespaceRegistry
• Thenewownerupdates
thedetailsofthelocationofthesourceofthe“administrative-units”namespace
• PIDRegistry
keepsthePIDsbutreplacessmoothlytheoldlocationsbythenewones;nothirdpartyappisaffected
NR
NR
PRg
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Expectedbenefits• INSPIRE• MeetthehttpPIDrecommendation
• Adoption• Probablyfastà Uncomplicatedprocess
• Visibilityontheweb• Webfriendly
• Addedvalues• Monitoring,resilience,provenance…
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Expectedcosts• Proofofconcept
• FundedbyCNIG(IGN)•
http://laloteta05.cps.unizar.es:8080/pid-registry/api/ns
• Prototype• Indevelopmentà UniversidadZaragoza,GeoSLab•
https://github.com/IAAA-Lab/pid-ms
• URIFramework•
NamespaceRegistry,PIDRegistry,PIDResolverà6person-month
• MaintenanceURIFramework• TechnicalSecretariatà
4person-montheachyear• Dedicatedservers
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Conclusions&otherresearchlines•
Anearly-automatedhttpURIFrameworkisfeasible• Itcanbeextended…
• e.g.Networkservicesgateway•
ServicePIDresolvestoserviceendpoint
• e.g.Metadatawithoutlinkrotà NavigableSDI•
MetadataPIDresolvestometadatafile•
MetadatafileusesinsidePIDinsteadofURLforonlineresources(datasets,servicesandothermetadata)
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Thanksforyourattention
Francisco J Lopez-PellicerIAAA, Universidad Zaragoza
[email protected]@fjlopezpellicer
https://www.linkedin.com/in/franciscojlopezpellicer
https://pid
