Method beginQueryMetrics

server/query_metrics.go:30–39

(start time.Time)

var queryTotalCounter = promauto.NewCounterVec(prometheus.CounterOpts{
	Name: "duckgres_query_total",
	Help: "Total number of non-empty query attempts partitioned by terminal status and reason.",
}, []string{"org", "status", "reason"})

// queryMetricsScope is the per-query observation record. It began life holding
// only the terminal Prometheus classification; it is now also where per-query
// metadata is stamped by whichever layer knows it (protocol, transpile, exec,
// results) and read back by logQuery. Keeping one scope per query means the
// query log and duckgres_query_total cannot disagree about an outcome.
//
// Scopes nest (a batched simple query runs statements inside an outer scope),
// so `previous` restores the parent on finish.
type queryMetricsScope struct {
	start              time.Time