[Esip-discovery] Service endpoint self description

Steve Richard steve.richard at azgs.az.gov
Fri Apr 17 07:18:31 EDT 2015

Sorry I missed the call yesterday--interesting topic.   It sounds like the idea is a scheme to facilitate web crawlers to discover service endpoints and be able to infer something about the kind of service?
If so, maybe something like the 'Home' document would make sense (https://tools.ietf.org/html/draft-nottingham-json-home-03, expired internet draft) is in order. 
In the list Ruth compiled, several of the services already have self-description documents (OpenSearch, OGC services, OAI-PMH) and a couple are self-description document formats (OpenSearch description, WSDL, WADL).  
Maybe the critical thing here is a registry of strings to use that identify a particular service type/version and any relevant profiles. There's an OSGEO group that's made a start at this, perhaps we can build on that? 


Stephen Richard
Chief Geoinformatics Section
Arizona Geological Survey
416 E. Congress #100, Tucson 85745
steve.richard at azgs.az.gov

From: Esip-discovery <esip-discovery-bounces at lists.esipfed.org> on behalf of Lynnes, Christopher S. (GSFC-6102) via Esip-discovery <esip-discovery at lists.esipfed.org>
Sent: Thursday, April 16, 2015 11:04 PM
To: Ruth Ellen Duerr
Cc: esip-discovery at lists.esipfed.org
Subject: Re: [Esip-discovery] List of web services that could use work

> On Apr 15, 2015, at 1:51 PM, Ruth Ellen Duerr via Esip-discovery <esip-discovery at lists.esipfed.org> wrote:
> Yes, I put OpenSearch at the top (both flavors).

I don't quite get the Subsetting Service flavor. I think of Subsetting as returning actual data values, but I don't know how an OpenSearch response can return the actual values.  Can you point elaborate?

I also don't understand Hyrax as a Catalog Service. Do you mean the thredds.xml files it creates, and if so, isn't that the same as Thredds?

Also, there is little difference in capability between a WCS and OPeNDAP in what they let you do and what they return.  Both support subsetting and return data values. Seems like they are either both Subsetting Service (if I understand Subsetting correctly) or both Data Service (if I misunderstand Subsetting).

>  This completes that action item from yesterday’s telecon.  I am in the process of submitting the ESIP summer session proposal as we speak.
> Ruth
> <Services - Sheet1.csv>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> "Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety."
> Benjamin Franklin, Historical Review of Pennsylvania, 1759
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Ruth Duerr
> Data Stewardship and Informatics Lead
> National Snow and Ice Data Center
> Cooperative Institute for Research in Environmental Science
> University of Colorado at Boulder
> Boulder, CO 80309
> (303) 735-0136
> rduerr at nsidc.org
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Dr. Christopher Lynnes     NASA/GSFC, Code 610.2    phone: 301-614-5185
"Perfection is achieved, not when there is nothing left to add, but when there is nothing left to take away" -- A. de Saint-Exupery

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