Layer definition

TOML Source-Definition file

The Lambda-function is configured via a toml-file (sources.toml). during the build-process. The TOML-File should contain an array of sources. Each source may contain properties and should contain an array of layers. Each Layer may contain properties and may contain an array of variants.

[[sources]]
    property = foo
    (...)
    [[sources.layers]]
        property = bar
        (...)
        [[sources.layers.variants]]
            property = something

Layer Properties

property	type	description	default if not given
name	string	A name for the item. Must be alphanumeric + underscore [A-Za-z0-9_]. No special characters allowed.	(must be provided)
minzoom	number	minimum (greater-or-equal-than) zoom value where the layer must be provided	0
maxzoom	number	maximum (less-than) zoom value where the layer must be provided	32
geom	string	name of the geometry-column to be used in the vector tile	"geometry"
keys	string[]	array of column names that will be encoded besides the geometry column. May contain SQL-expressions.	""
where	string[]	array of conditions that will be used in the SQL-query as WHERE-Clause. Multiple conditions are concatenated with AND	""
prefix	string	SQL-Statement that will be inserted before the ST_AsMvtGeom-Function. Useful for DISTINCT ON()-Statements	""
postfix	string	SQL-Statement that will be inserted after the WHERE-Clause. Useful for ORDER BY-Statements	""
srid	number	identifier of the spatial reference system	3857
extend	number	tile extent in pixels (see ST_AsMVTGeom)	4096
buffer	number	buffer in pixels around each tile (see ST_AsMVTGeom)	256
clip_geom	boolean	clip geometries that lie outside the current tile incl. buffer (see ST_AsMVTGeom)	true