Update xk6-output-prometheus-remote to its latest main commit

This allows us to make all TrendSink properties private and finish that refactoring effort.

go.mod

@@ -15,7 +15,7 @@ require (
 	github.com/gorilla/websocket v1.5.0
 	github.com/grafana/xk6-browser v0.10.0
 	github.com/grafana/xk6-grpc v0.1.2
-	github.com/grafana/xk6-output-prometheus-remote v0.2.1
+	github.com/grafana/xk6-output-prometheus-remote v0.2.2-0.20230719110733-69f101ee8ade
 	github.com/grafana/xk6-redis v0.1.1
 	github.com/grafana/xk6-timers v0.1.2
 	github.com/grafana/xk6-webcrypto v0.1.0

go.sum

@@ -183,8 +183,8 @@ github.com/grafana/xk6-browser v0.10.0 h1:Mnx0Ho+mlyFGlV7zW7zXkN0njRglh9JflLV+Oz
 github.com/grafana/xk6-browser v0.10.0/go.mod h1:ax6OHARpNEu9hSGYOAI4grAwiRapsNPi9TBQxDYurKw=
 github.com/grafana/xk6-grpc v0.1.2 h1:gNN3PYV2dIPoq1zTVz8YOxrWhl1D15jhRR0EA9ZYhBw=
 github.com/grafana/xk6-grpc v0.1.2/go.mod h1:iq6qHN64XgAEmDHKf0OXZ4mvoqF4Udr22fiCIXNpXA0=
-github.com/grafana/xk6-output-prometheus-remote v0.2.1 h1:/JOMHwByfCkFe17iokUDKCIjh8e5g0gqqnrg8zSnxf4=
-github.com/grafana/xk6-output-prometheus-remote v0.2.1/go.mod h1:JWUOn1fY8Yp3dM+IaPSNMM6t+sF3aJ2AA7Qzs6lKGww=
+github.com/grafana/xk6-output-prometheus-remote v0.2.2-0.20230719110733-69f101ee8ade h1:DY8H7hMVBpP4yuKlNnPBykL+WJ4hBobwT0BG8nDcFLw=
+github.com/grafana/xk6-output-prometheus-remote v0.2.2-0.20230719110733-69f101ee8ade/go.mod h1:rI7naMHdQ+vLVoonZ6LYkrXz8ZiWIptTstVbV2CSahY=
 github.com/grafana/xk6-redis v0.1.1 h1:rvWnLanRB2qzDwuY6NMBe6PXei3wJ3kjYvfCwRJ+q+8=
 github.com/grafana/xk6-redis v0.1.1/go.mod h1:z7el1Tz8advY+ex419KfLbENzSQYgaA2lQYwMlt9yMM=
 github.com/grafana/xk6-timers v0.1.2 h1:YVM6hPDgvy4SkdZQpd+/r9M0kDi1g+QdbSxW5ClfwDk=

metrics/engine/ingester_test.go

@@ -44,7 +44,7 @@ func TestIngesterOutputFlushMetrics(t *testing.T) {
 	assert.Equal(t, testMetric, metric)
 
 	sink := metric.Sink.(*metrics.TrendSink) //nolint:forcetypeassert
-	assert.Equal(t, 42.0, sink.Sum)
+	assert.Equal(t, 42.0, sink.Total())
 }
 
 func TestIngesterOutputFlushSubmetrics(t *testing.T) {

metrics/sink.go

@@ -99,9 +99,7 @@ type TrendSink struct {
 
 	count    uint64
 	min, max float64
-	// TODO: unexport after this dependency is removed:
-	// https://github.com/grafana/xk6-output-prometheus-remote/blob/v0.2.1/pkg/remotewrite/remotewrite.go#L173
-	Sum float64
+	sum      float64
 }
 
 // IsEmpty indicates whether the TrendSink is empty.
@@ -122,7 +120,7 @@ func (t *TrendSink) Add(s Sample) {
 	t.values = append(t.values, s.Value)
 	t.sorted = false
 	t.count++
-	t.Sum += s.Value
+	t.sum += s.Value
 }
 
 // P calculates the given percentile from sink values.
@@ -167,14 +165,14 @@ func (t *TrendSink) Count() uint64 {
 // Avg returns the average (i.e. mean) value.
 func (t *TrendSink) Avg() float64 {
 	if t.count > 0 {
-		return t.Sum / float64(t.count)
+		return t.sum / float64(t.count)
 	}
 	return 0
 }
 
 // Total returns the total (i.e. "sum") value for all measurements.
 func (t *TrendSink) Total() float64 {
-	return t.Sum
+	return t.sum
 }
 
 func (t *TrendSink) Format(tt time.Duration) map[string]float64 {

vendor/modules.txt

@@ -160,7 +160,7 @@ github.com/grafana/xk6-browser/storage
 ## explicit; go 1.19
 github.com/grafana/xk6-grpc/grpc
 github.com/grafana/xk6-grpc/lib/netext/grpcext
-# github.com/grafana/xk6-output-prometheus-remote v0.2.1
+# github.com/grafana/xk6-output-prometheus-remote v0.2.2-0.20230719110733-69f101ee8ade
 ## explicit; go 1.18
 github.com/grafana/xk6-output-prometheus-remote/pkg/remote
 github.com/grafana/xk6-output-prometheus-remote/pkg/remotewrite