using wps (pywps) with taverna orchestration
DESCRIPTION
Presentation made in Luxemburg for workshop Web Processing Service (WPS) technologies for Integrated Assessment Modelling in Urban Areas COST Action: TU0902 – 21-24 Jan 2014, LuxemburgTRANSCRIPT
WPS Orchestration in Taverna
Jorge S. Mendes de Jesus
Web Processing Service (WPS) technologies for Integrated Assessment Modelling in Urban Areas COST Action: TU0902 – 21-24 Jan 2014, Luxemburg
WhoAmI
Programmer, working in Wageningen (NL) @ ISRICThis presentation covers my work @ PML
(Plymouth Marine Laboratory)
Project
http://netmar.nersc.no/
http://rsg.pml.ac.uk/
Story telling....an uncharted annex...
Basically some generic description of SOAP and WSDL support
SOAP, WSDL..and WPS
• Have you ever noticed this ?????
SOAP, WSDL..and WPS
DANGER, here be dragons
WSDL
The Web Services Description Language is an XML-based interface description language that is used for describing the functionality offered by a web service.
XML that describes how your web service works , what it accepts and how it communicates.
WSDL
Yes, we need to re-invent the wheel....in this case WPS..inside WSDL
<definitions> <types> definition of types........ </types> <message> definition of a message.... </message> <portType> definition of a port....... </portType> <binding> definition of a binding.... </binding> <service> defintion of a service <service> </definitions>
SOAP
SOAP
Are you ready to see an execute Process in SOAP???
SOAP
Dummy process, adds and subtracts 1
<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope"> <soap:Body> <ExecuteProcess_DummyProcess> <datainput1>10</datainput1> <datainput2>20</datainput2> </ExecuteProcess_DummyProcess> </soap:Body> </soap:Envelope> Attr in El name
XML blasphemy !!!
Totally different from WPS
4-some: PyWPS, WSDL, SOAP and XSLT
Warning!!!! Here be translations
4-some: PyWPS, WSDL, SOAP and XSLT
DescribeProcess (all) XML
Python Code (PyWPS process code)
Information Source
XSLT
4-some: PyWPS, WSDL, SOAP and XSLT
New worlds, new opportunities !!!!! Before the new world......
4-some: PyWPS, WSDL, SOAP and XSLT
If you create a PyWPS it will be automatically translate to WSDL....so no extra config.....everything transparent
SOAP requests are translated to/from WPS requests/responses
Processes splited into sync and async since we need to define a different reply for async (No WSDL overloading)
5-some: PyWPS, WSDL, SOAP, XLST and Taverna
Lets give a look at the bioinformatics jungle....
5-some: PyWPS, WSDL, SOAP, XLST and Taverna
Having WSDL/SOAP we can run WPS in Taverna....Orchestration
Taverna (http://www.taverna.org.uk/)
Taverna (http://www.taverna.org.uk/)
Examples:
Gdalinfo:http://www.myexperiment.org/workflows/2313.html:
Watersheed:http://www.myexperiment.org/workflows.2066.html
SomeErrors:http://www.myexperiment.org/workflows/2340.html
Children play !!!!!
http://rsg.pml.ac.uk/wps/example/index.html
Extensive documentation
http://wiki.rsg.pml.ac.uk/pywps/PyWPS
Thank you