app/vmselect: show query origin (aka remote_addr or client address) on the /api/v1/status/active_queries page for every query

app/vmselect/prometheus/prometheus.go

@@ -693,6 +693,7 @@ func QueryHandler(startTime time.Time, w http.ResponseWriter, r *http.Request) e
 		Start:         start,
 		End:           start,
 		Step:          step,
+		RemoteAddr:    r.RemoteAddr,
 		Deadline:      deadline,
 		LookbackDelta: lookbackDelta,
 	}
@@ -777,6 +778,7 @@ func queryRangeHandler(startTime time.Time, w http.ResponseWriter, query string,
 		Start:         start,
 		End:           end,
 		Step:          step,
+		RemoteAddr:    r.RemoteAddr,
 		Deadline:      deadline,
 		MayCache:      mayCache,
 		LookbackDelta: lookbackDelta,

app/vmselect/promql/active_queries.go

@@ -20,7 +20,8 @@ func WriteActiveQueries(w io.Writer) {
 	now := time.Now()
 	for _, aqe := range aqes {
 		d := now.Sub(aqe.startTime)
-		fmt.Fprintf(w, "\tduration: %.3fs, id=%016X, query=%q, start=%d, end=%d, step=%d\n", d.Seconds(), aqe.qid, aqe.q, aqe.start, aqe.end, aqe.step)
+		fmt.Fprintf(w, "\tduration: %.3fs, id=%016X, remote_addr=%q, query=%q, start=%d, end=%d, step=%d\n",
+			d.Seconds(), aqe.qid, aqe.remoteAddr, aqe.q, aqe.start, aqe.end, aqe.step)
 	}
 }
 
@@ -36,6 +37,7 @@ type activeQueryEntry struct {
 	end        int64
 	step       int64
 	qid        uint64
+	remoteAddr string
 	q          string
 	startTime  time.Time
 }
@@ -52,6 +54,7 @@ func (aq *activeQueries) Add(ec *EvalConfig, q string) uint64 {
 	aqe.end = ec.End
 	aqe.step = ec.Step
 	aqe.qid = atomic.AddUint64(&nextActiveQueryID, 1)
+	aqe.remoteAddr = ec.RemoteAddr
 	aqe.q = q
 	aqe.startTime = time.Now()
 

app/vmselect/promql/eval.go

@@ -75,6 +75,7 @@ type EvalConfig struct {
 	End   int64
 	Step  int64
 
+	RemoteAddr string
 	Deadline   netstorage.Deadline
 
 	MayCache bool