aggregation - URL encoded viewparams throws org.geoserver.platform.ServiceException

[ngageoint]

aggregation - URL encoded viewparams throws org.geoserver.platform.ServiceException

[sjudeng]

The first encoded URL is missing the backslash to escape the comma. See below (note the escaped \, %5C).

http://localhost:8080/geoserver/denver/wms?SERVICE=WMS&REQUEST=GetMap&VERSION=1.1.1&LAYERS=denver%3Areport&STYLES=geohashgrid&FORMAT=image%2Fpng&TRANSPARENT=true&HEIGHT=256&WIDTH=256&VIEWPARAMS=a%3A%7B%22agg%22%3A%20%7B%22geohash_grid%22%3A%20%7B%22field%22%3A%20%22location%22%5C%2C%20%22precision%22%3A%203%7D%7D%7D&SRS=EPSG%3A3857&BBOX=-11662456.027639052,4774562.53480525,-11623320.26915704,4813698.293287256

Maybe in the layer definition you need a double backslash to make sure it's included in the request?

[nreese]

Thanks for the extra set of eyes - adding an additional backslash resolved the error.

viewparams: 'a:{"agg": {"geohash_grid": {"field": "location"\\, "precision": 3}}}'

Now all of my tiles are empty. Is there a simple SLD that will display grids with counts greater than zero one color and empty grids another?

[sjudeng]

I'd expect you'd see something with the example SLD from the docs but you could try updating ColorMapEntry quantity values with better max value for your expected doc counts.

<ColorMapEntry color="#FFFFFF" quantity="0" label="nodata" opacity="0"/>
<ColorMapEntry color="#00FF00" quantity="1" label="values"/>
<ColorMapEntry color="#0000FF" quantity="1000" label="label"/>

If this doesn't help you might turn up logging and check the queries that are being executed.

[nreese]

Putting some debug code into GeoHashGrid, I get the following when initalize is called.

num buckets: 0
precision: 2
cellWidth: 11.25
cellHeight: 5.625

The number of buckets should not be zero. Is there a way to print the Elasticsearch aggregation request and response?

[nreese]

Found the problem. My elastic store was using port 9300 instead of port 9200 for REST client like the documentation stated. I am out of the starting blocks.