func queryForAggregateTags(query *opentsdb.Query) (opentsdb.TagSet, error) {
req := opentsdb.Request{}
req.Queries = []*opentsdb.Query{query}
req.Start = "1h-ago"
resp, err := req.Query(*tsdbHost)
if err != nil {
return nil, err
}
if len(resp) < 1 {
return nil, fmt.Errorf("No points in last hour to learn aggregate tags")
}
tagset := make(opentsdb.TagSet)
for _, t := range resp[0].AggregateTags {
tagset[t] = "*"
}
return tagset, nil
}
