[mapserver-users] Mapcache - Composite cache problem

[tellett]

Hi all,

I'm trying to use a composite cache in my mapcache instance but am not
having any luck. I've set up the configuration file as best I can in
accordance with the documentation, and I have the tileset (topo2matrikkel)
as an option in the demo client, but only blank tiles are shown. no error
messages are returned. My config file looks like  this:

-------------CACHES --------------------------------------------------------
<cache name="topo2" type="disk">
        <base>/cache/mapcache/topo2</base>
</cache>
<cache name="topo2matrikkelsource" type="disk">
        <base>/cache/mapcache/topo2matrikkelsource</base>
</cache> 	
<cache name="topo2matrikkel" type="composite">
		<cache min-zoom="0" max-zoom="12">topo2</cache>
		<cache min-zoom="13">topo2matrikkelsource</cache>
</cache>
------------TILESET----------------------------------------------------------
<tileset name="topo2">
        <source>topo2</source>
        <cache>topo2</cache>
        <metadata>
            <title>Topografisk Norgeskart</title>
            <abstract>Cache for topo2 produkten</abstract>
            <wgs84bbox></wgs84bbox>
        </metadata>
		<grid>googlemaps</grid>
		<grid>utm33n</grid>
		<grid>crs84quad</grid>
        <format>PNG</format>
        <metatile>8 8</metatile>
        <metabuffer>10</metabuffer>
</tileset>
<tileset name="topo2matrikkel">
        <cache>topo2matrikkel</cache>
        <metadata>
            <title>Matrikkel klient bakgrunnskart</title>
            <wgs84bbox></wgs84bbox>
        </metadata>
	    <grid>utm33n</grid>
            <format>PNG</format>
</tileset>
------------------------------------------------------------------------------

I've checked that there are tiles in the topo2 cache, and yes that cache
does support utm33n and png.
I can run exactly the same request for both the topo2 and topo2matrikkel
tilesets (
REQUEST=GetTile&VERSION=1.0.0&LAYER=topo2matrikkel&STYLE=default&TILEMATRIXSET=utm33n&TILEMATRIX=2&TILEROW=1&TILECOL=1&FORMAT=image%2Fpng)
but only the topo2 request returns data. Perhaps I've missunderstood
something fundamental here?

Thanks in advance for any help,

Tom



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