ctucx.git: fritzbox-exporter

add usage

diff --git a/src/fb_exporter.nim b/src/fb_exporter.nim
@@ -137,6 +137,10 @@ proc prometheusResponse* (request: Request, state: JsonNode) {.async.} =
                 let cell_distance = data[cell]["distance"].getInt
                 res &= "fritzbox_network_distance{cell=\"" & $num & "\"} " & $(cell_distance/1000) & " " & $(lastUpdated * 1000) & "\n"
 
+              if data[cell].hasKey("usage"):
+                let cell_usage = data[cell]["usage"].getInt
+                res &= "fritzbox_network_usage{cell=\"" & $num & "\"} " & $(cell_usage/1000) & " " & $(lastUpdated * 1000) & "\n"
+
         data.parseCell(0) 
         data.parseCell(1)