Web Services Survey an Inventory Background, Goals and Status

1. Web Services Survey an InventoryBackground, Goals and Status 14th ESIP Federation Assembly MeetingRenaissance Mayflower HotelWashington, DCJanuary 4-6, 2005

2. Background and Purpose There is a rapidly growing array of distributed services for accessing, processing, visualizing, cataloging, discovering or otherwise manipulating Earth Science information through computer-computer interfaces. The landscape is currently obscured by the lack of a suitable inventory and by the hype associated with web services Purposes of the WS Inventory/Survey • assess the size and characteristics of the computer-accessible (WS) resource pool • expose the main computer-computer WS linking protocols used and • get a rough assessment of the current WS usage environments. Beneficiaries: ESIP Infusion DSWG workgroup other DSWG workgroups, (e.g. Reuse and Standards) It should also aid the creation and diffusion of ES knowledge for Achieving a Sustainable Planet (ESIP)

3. WS Inventory: Features and Approach WS Inventory Survey Features • Flexible to capture the varied WS technologies and their use environments • Simple for easy participation Approach to the WS Inventory Content Creation • The content of the WS Inventory collected from the community through a web-form. • Subsequent versions of this inventory could incorporate more specifics for service binding • The content could migrate to formal WS Discovery services such as GCMD, ECHO and others. Current task: Designing the web-form to be filled out by the participating members Latest draft Web Service Inventory page on the Infusion WG website http://www.sciencedatasystems.org/seeds/wg/infusion/Lists/Service%20Inventory/AllItems.aspx Discussion thread for web-form design WS Invedntory Form Design by the WG http://www.sciencedatasystems.org/seeds/wg/infusion/Lists/Web%20Services%20Discussion/AllItems.aspx Select the node in the thread Press Post Reply (remember to log in, so we know who you are).

4. Tech. Infusion WG, WS Subgroup

5. WS Inventory/Survey Discussion Thread

6. Draft WS Inventory Record

7. Draft WS Inventory Record

8. Draft WS Inventory

9. WS Inventory Form:Description, Contact,Example

10. WS Inventory Form:Interface, Clients, Tools

11. WS Inventory Form:Functions, Topic (GCMD) Science Domains

12. WS Inventory as an Open, Living Resource? • Relationship to other Catalogs (Social Behavior) • Not to be rude • Not just coexisting • Cooperative, part of a value-chain • Data collection through SDS SharePoint • Inventory extension @ ESIP (SOAP) • Usage at GCMD & EDCHO? GCMD OpenDAP Cat OGC Cats ESIP Cat ECHO Google • Stages of Cooperation • Open content for connection by others - sharing • Connecting through proxies & gateways • Semantic Interoperability

13. Scope of Web Services Subgroup, 2005 • Prepare an inventory of web services and their interfaces • The WS landscape is changing rapidly. New services are emerging • We need a snapshot of the service landscape, particularly in the REASoN projects • But what ‘services’ do we include? SOAP, OPeNDAP, OGC, files? • Assess WS architectures for data access AND analysis • We don't quite know how to link distributed WSs into coherent science applications • An open dialog on the linking/architectural issues would speed up the group learning. • Issues: e.g. Architecture without rigid architecture • Demonstrate web service linking • Several REASoNs have a goal of facilitating satellite data flow and processing • A narrow pilot project could demonstrate satellite data access/processing/analysis/delivery • Issues: Which REASoN projects? Data products? Services? Architecture(s)? Further ideas/feedback on the scope of the WS subgroup will be appreciated.