cluster_wave.promql

# Transform a map of
#   { <wave1>: [<cluster1>, ... <clusterN>], ... }
# to entries as
#   absent(__foo{cluster="cluster1", wave="wave1"}) or
#   absent(__foo{cluster="cluster2", wave="wave1"})
# which are join-able via promQL against cluster- labeled timeseries
$ ./scripts/monitoring/rightsizing/clusters-by-wave.sh karpenter | jq -r '. as $r 
    | ["ops","prod0","prod1","prod2","prod3","prod4"] as $wave
    | reduce $wave[] as $w ([]; . + (( $r[$w] // [] ) 
    | map({wave:$w, cluster:.})))
    | to_entries
    | .[] | "absent(__foo{cluster=\"\(.value.cluster)\", wave=\"\(.value.wave)\"}) or"' \
  | sed '$s/or$//' # remove last "or"