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Python and REST

Python and REST. Kevin Hibma. [NEW] ArcGIS Python API. New API that makes interacting with Esri RESTful technologies easy Going into beta, released with ArcGIS 10.5 Scripting and Automation iPython Notebooks View webmaps , visualize results Not an arcpy replacement.

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Python and REST

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  1. Python and REST Kevin Hibma

  2. [NEW] ArcGIS Python API • New API that makes interacting with EsriRESTful technologies easy • Going into beta, released with ArcGIS 10.5 • Scripting and Automation • iPython Notebooks • View webmaps, visualize results • Not an arcpy replacement.

  3. [NEW] ArcGIS Python API >> conda install –c esri arcgis >> python (optionally) >> conda install jupyter from arcgis.gis import * gis = GIS(“http://www.arcgis.com”, “xxxx”, “xxxx”) gis.groups.list() gis.content.search(“Chiptole”)

  4. What is REST? Why REST? • REST stands for Representational State Transfer. (It is sometimes spelled "ReST".) It relies on a stateless, client-server, cacheable communications protocol -- and in virtually all cases, the HTTP protocol is used. REST is an architecture style for designing networked applications. • > rest.elkstein.org/2008/02/what-is-rest.html • Ummm what? (search has a lot of similar definitions) • For this session we’ll use the term REST to loosely describe how we (python scripts) connect and talk to a server / web service end point. • Why? Because its easier than SOAP! (another way to talk across the internet)

  5. What can I do? • ArcGIS Server • Consume, create, update, administer • ArcGIS Online (arcgis.com) • Consume, create, update, configure • Web services (both ArcGIS and not-ArcGIS) • Consume, update (with permission)

  6. Development pattern • (optionally) Authenticate (get a token) depending on operation • Build URLs to hit different end points • http://server/arcgis/rest/service/QUERY • Most requests are POST (vs. GET) • Send and receive a JSON payload • A REST service could send data back in another format

  7. Time for some code

  8. What to put where? (how do I know what a request needs and what a response gives) • Read API help doc • http://esriurl.com/restapi • Use Fiddler • With fiddler running, perform actions in a browser or other client inspect requests / response • WebBrowsers have built in consoles to watch requests URL Query parameters Response

  9. Links • Documentation and examples • http://esriurl.com/scriptRESTAPI • Ready to go tools, scripts and command line • http://esriurl.com/AGStools • Code as iPython notebook • https://github.com/khibma/PythonREST_UC2015

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