GeoServer OGC APIs: introduction to the OGC Web APIs, features, tiles, and styles

Transcript

1. GeoServer WFS3:
   introduction to the RESTful,
   schemaless,
   JSON first download service
   Ing. Andrea Aime
   GeoSolutions
   What I planned to present in early 2019!
   

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2. GeoServer OGC APIs:
   introduction to the OGC Web APIs,
   features, tiles,
   and styles
   Ing. Andrea Aime
   GeoSolutions
   What I'm actually presenting!
   

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3. GeoSolutions
   ⚫
   Italian SME
   ⚫
   Expertise
   • Image Processing, GeoSpatial Data Fusion
   • Java, Java Enterprise, C++, Python
   • JPEG2000, JPIP, Advanced 2D visualization
   ⚫
   Supporting/Developing FOSS4G projects
   ⚫
   GeoServer, MapStore
   ⚫
   GeoNetwork, GeoNode, Ckan
   ⚫
   Clients
   ⚫
   Public Agencies
   ⚫
   Private Companies
   ⚫
   http://www.geo-solutions.it
   FOSS4G 2019, August 26th/30th, Bucharest
   

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4. WFS3 in a nutshell
   https://github.com/opengeospatial/WFS_FES
   FOSS4G 2019, August 26th/30th, Bucharest
   

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5. OpenAPI
   FOSS4G 2019, August 26th/30th, Bucharest
   

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6. But it's not called WFS3 anymore…
   How did we get here?
   A bit of history
   

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7. WFS3 history in a nutshell
   FOSS4G 2019, August 26th/30th, Bucharest
   WFS3 Hackaton
   Testbed 14
   Vector Tiles Pilot
   Testbed 15
   API Hackaton
   

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8. WFS3 hackaton, 6-7 March 2018
   • https://github.com/geoserver/geoserver/tree/master/
   src/community/wfs3
   FOSS4G 2019, August 26th/30th, Bucharest
   

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9. WFS3 hackaton – GeoServer WFS3
   FOSS4G 2019, August 26th/30th, Bucharest
   

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10. Testbed 14 – March/December 2018
    • https://github.com/opengeospatial/ets-wfs30
    FOSS4G 2019, August 26th/30th, Bucharest
    Teamengine
    WFS3 Tests
    GeoServer
    WFS3
    LD-Proxy
    WFS3
    Cubewerx
    WFS3
    

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11. Vector tiles pilot – End of 2018
    FOSS4G 2019, August 26th/30th, Bucharest
    SLD interpreted client
    side to render vector tiles
    

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12. Vector tiles pilot – End of 2018
    FOSS4G 2019, August 26th/30th, Bucharest
    

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13. API Hackaton, London 2018
    FOSS4G 2019, August 26th/30th, Bucharest
    API Commons
    Features Coverages Maps & Tiles Processes
    Catalogs Styles More!
    

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14. API Hackaton, London 2018
    FOSS4G 2019, August 26th/30th, Bucharest
    

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15. Testbed 15
    FOSS4G 2019, August 26th/30th, Bucharest
    

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16. Ok, so what does a
    OGC API look like?
    

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17. OGC API (OAPI) Common
    FOSS4G 2019, August 26th/30th, Bucharest
    https://github.com/opengeospatial/oapi_common
    

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18. Links, links everywhere!
    FOSS4G 2019, August 26th/30th, Bucharest
    /collections
    /collections/{collectionId}
    Backlinks to self and alternative
    representations
    (different formats/encodings)
    Links to each collection in each of its formats
    {
    "href":"http://data.example.org/collections.json",
    "rel":"self",
    "type":"application/json",
    "title":"this document"
    }
    

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19. Very little is mandatory
    FOSS4G 2019, August 26th/30th, Bucharest
    {
    "conformsTo": [
    "http://www.opengis.net/spec/ogcapi-features-1/1.0/conf/core",
    "http://www.opengis.net/spec/ogcapi-features-1/1.0/conf/oas30",
    "http://www.opengis.net/spec/ogcapi-features-1/1.0/conf/html",
    "http://www.opengis.net/spec/ogcapi-features-1/1.0/conf/geojson"
    ]
    }
    

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20. Features API Core
    

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21. Features API Core
    FOSS4G 2019, August 26th/30th, Bucharest
    

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22. FOSS4G 2019, August 26th/30th, Bucharest
    

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23. FOSS4G 2019, August 26th/30th, Bucharest
    

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24. FOSS4G 2019, August 26th/30th, Bucharest
    

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25. FOSS4G 2019, August 26th/30th, Bucharest
    …/collections/buildings/items?
    bbox=41,54,42,55
    &datetime=2018-02-12T23%3A20%3A52Z
    &buildingState=good
    

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26. FOSS4G 2019, August 26th/30th, Bucharest
    [
    {
    "href":"http://example.org/collections/buildings/items.json?limit:50",
    "rel":"prev",
    "type":"application/geo+json"
    },
    {
    "href":"http://example.org/collections/buildings/items.json?limit:50&offset:50",
    "rel":"self",
    "type":"application/geo+json"
    },
    {
    "href":"http://example.org/collections/buildings/items.json?limit:50&offset:100",
    "rel":"next",
    "type":"application/geo+json"
    }
    ]
    

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27. FOSS4G 2019, August 26th/30th, Bucharest
    

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28. FOSS4G 2019, August 26th/30th, Bucharest
    

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29. FOSS4G 2019, August 26th/30th, Bucharest
    https://github.com/opengeospatial/WFS_FES/tree/master/
    extensions/crs
    http://docs.opengeospatial.org/per/18-021.html
    

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30. How does it look in GeoServer?
    An exploration of HTML encoding
    

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31. FOSS4G 2019, August 26th/30th, Bucharest
    

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32. FOSS4G 2019, August 26th/30th, Bucharest
    

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33. FOSS4G 2019, August 26th/30th, Bucharest
    

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34. FOSS4G 2019, August 26th/30th, Bucharest
    

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35. FOSS4G 2019, August 26th/30th, Bucharest
    Paging links
    

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36. FOSS4G 2019, August 26th/30th, Bucharest
    

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37. One minute view of tiles and styles
    

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38. Styles API
    FOSS4G 2019, August 26th/30th, Bucharest
    

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39. Style metadata
    FOSS4G 2019, August 26th/30th, Bucharest
    Basic metadata info
    (yeah, I did not fill it yet, no love lost for metadata!)
    Access to style source, native (CSS)
    and converted (SLD) when possible
    List of layers involved in the style (could have many)
    and attributes used in each (style editor can use them
    to check compatibility with available data)
    The style identifier
    

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40. Styles API client
    FOSS4G 2019, August 26th/30th, Bucharest
    

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41. Tiles API
    FOSS4G 2019, August 26th/30th, Bucharest
    https://github.com/opengeospatial/OGC-API-
    Map-Tiles
    

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42. Some example insertion points
    FOSS4G 2019, August 26th/30th, Bucharest
    

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43. That’s all folks!
    Questions?
    info@geo-solutions.it
    

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