Using WPS (PyWPS) with Taverna Orchestration
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Transcript of Using WPS (PyWPS) with Taverna Orchestration
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