When trying to delete a granule from an ImageMosaic on a Secured GeoServer, the operation doesn't succeed returning this message:
"Coverage exists, but is no structured grid coverage".
The problem is that the DefaultSecurityFactory wraps the reader with a SecuredGridCoverage2DReader which implements standard GridCoverage2DReader.
Granules management can only be performed on StructuredGridCoverage2DReader so the Factory should wrap that interface with a Secured*Structured*GridCoverage2DReader implementing it.
When doing that, it should also take care of checking the wrapping policies and filters for operations like read, harvest, granules removal, coverage removal and so on.
Mass closing all resolved issues not modified in the last 4 weeks