's BlogOWS-5 Interoperability Demo
St Louis, Mar 28, 2008
Just completed a full week of OGC meetings in St Louis. This is the conclusion of OWS-5 (OGC Web Services Interoperability Demo #5) with more than 30 participants.
The NASA SensorWeb is deeply involved in Earth Observation, Natural Resources & Environment. We presented our current ROA-based architecture used to support many pilots and operational demonstrations.
Flip through the presentation on Slideshare and
Watch the first 7mn video here
or this one here as a more technical oriented version (10mn .mov)
GeoBliki in Sensors Magazine
A great article from Sam Bacharach published in Sensors Magazine. The OGC SensorWeb Enablement is picking up some steam. We are greatly appreciative to NASA, one of our sponsors.
The OGC interoperability demonstrations such as OWS-4 and OWS-5, are crucial for standard adoption. As mentioned in the article, our focus for OWS-5 is in enterprise workflow scenarios (geobpms) for national or international emergency response such as fires or floods.
OAuth 1.0 for Geobliki
Warning! Your web access to http://eo1.geobliki.com might be declined.
Security has been tightened up for the RESTful OGC Services.
Done as part of OWS-5 interoperability experiment for RESTful services, OAuth 1.0 has been implemented as our security protocol between consumer applications and our web services (sps, wfs, sos). We have made an additional assumption that users could pre-grant access to consumers such as workflows to allow for unattended operations to simplify the protocol one step further. For more information, go to: http://eo1.geobliki.com/pages/oauth
WfXML-R
Workflow interoperability is a major concern for the OGC and the WfMC. A simple and RESTful API is critical for early adoption. With the help of John Mettraux of OpenWFE fame, Matt Zukovsky, Keith Swenson and many others, we are documenting this effort dubbed WfXML-R leveraging many years of work done by Keith and the WfMC group.
We need some help and early adopters. Continuous feedback to the nascent specification would be appreciated.
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Workflows, RESTful OGC Services and Identity 2.0
Generating just-in time data products for first responders require the chaining of many web services using workflows.
Our interesting challenge is multi-fold. First responders from various organizations will need access to data provided by other organizations in case of emergencies. Single sign-on is a must. Trusted relationships between organizations is critical to grant access of sensitive data or assets to remote users in a seamless manner.
Access profiles may need to be exchanged at login to determine the access rights of those incoming users.
With the OGC, we are working on RESTful APIs for SensorWeb Enabled Data Nodes. Fairly sophisticated workflows will access remote web services to task satellites, process the data and deliver custom products to the end-users. This needs to be done securely on behalf of the end-users that may grant temporary or permanent access to costly resources to those workflows.
As part of OWS-5, we will be demonstrating that capability fairly shortly. This will require the tight integration of Identity standards such as OpenID 2.0 and the emerging OAuth.
This is part of our effort to provide a simpler but secure resource oriented architecture (ROA) that will scale up to support a broader community in a federated environment.