Percentage of queue used for tasks waiting to send to the Kafka ingest queue

Example Metric Record:

json
{
   "#repo" : "humio-metrics",
   "#type" : "metrics",
   "@host" : "42",
   "@id" : "Y3hehJLWIC08HrPzpGr145yP_11332_1542_1749978004",
   "@ingesttimestamp" : "1749978004721",
   "@timestamp" : 1749978004667,
   "@timestamp.nanos" : "0",
   "@timezone" : "UTC",
   "name" : "kafka-request-queue-fill-percentage",
   "type" : "GAUGE",
   "value" : "0.0"
}