Prometheus fix inf bucket count (open-telemetry#15287)

 +Inf bucket counts are handled incorrectly in both prometheusexporter and prometheusremotewriteexporter.

.chloggen/prometheus-fix-inf-bucket-count.yaml

@@ -0,0 +1,11 @@
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: bug_fix
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: prometheusremotewriteexporter
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Fix value of `+Inf` histogram bucket to be equal to total count
+
+# One or more tracking issues related to the change
+issues: [4975]

cmd/configschema/go.mod

@@ -511,7 +511,7 @@ require (
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/power-devops/perfstat v0.0.0-20220216144756-c35f1ee13d7c // indirect
 	github.com/pquerna/cachecontrol v0.1.0 // indirect
-	github.com/prometheus/client_golang v1.13.0 // indirect
+	github.com/prometheus/client_golang v1.13.1-0.20221013115219-dcea97eee2b3 // indirect
 	github.com/prometheus/client_model v0.3.0 // indirect
 	github.com/prometheus/common v0.37.0 // indirect
 	github.com/prometheus/common/sigv4 v0.1.0 // indirect

exporter/prometheusexporter/go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/resourcetotelemetry v0.62.0
 	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/translator/prometheus v0.62.0
 	github.com/open-telemetry/opentelemetry-collector-contrib/receiver/prometheusreceiver v0.62.0
-	github.com/prometheus/client_golang v1.13.0
+	github.com/prometheus/client_golang v1.13.1-0.20221013115219-dcea97eee2b3
 	github.com/prometheus/client_model v0.3.0
 	github.com/prometheus/common v0.37.0
 	github.com/prometheus/prometheus v0.38.0

go.mod

@@ -511,7 +511,7 @@ require (
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/power-devops/perfstat v0.0.0-20220216144756-c35f1ee13d7c // indirect
 	github.com/pquerna/cachecontrol v0.1.0 // indirect
-	github.com/prometheus/client_golang v1.13.0 // indirect
+	github.com/prometheus/client_golang v1.13.1-0.20221013115219-dcea97eee2b3 // indirect
 	github.com/prometheus/client_model v0.3.0 // indirect
 	github.com/prometheus/common v0.37.0 // indirect
 	github.com/prometheus/common/sigv4 v0.1.0 // indirect

pkg/translator/prometheusremotewrite/helper.go

@@ -344,10 +344,7 @@ func addSingleHistogramDataPoint(pt pmetric.HistogramDataPoint, resource pcommon
 	if pt.Flags().NoRecordedValue() {
 		infBucket.Value = math.Float64frombits(value.StaleNaN)
 	} else {
-		if pt.BucketCounts().Len() > 0 {
-			cumulativeCount += pt.BucketCounts().At(pt.BucketCounts().Len() - 1)
-		}
-		infBucket.Value = float64(cumulativeCount)
+		infBucket.Value = float64(pt.Count())
 	}
 	infLabels := createAttributes(resource, pt.Attributes(), settings.ExternalLabels, nameStr, baseName+bucketStr, leStr, pInfStr)
 	sig := addSample(tsMap, infBucket, infLabels, metric.Type().String())

processor/spanmetricsprocessor/go.mod

@@ -58,7 +58,7 @@ require (
 	github.com/pelletier/go-toml v1.9.5 // indirect
 	github.com/pelletier/go-toml/v2 v2.0.5 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/prometheus/client_golang v1.13.0 // indirect
+	github.com/prometheus/client_golang v1.13.1-0.20221013115219-dcea97eee2b3 // indirect
 	github.com/prometheus/client_model v0.3.0 // indirect
 	github.com/prometheus/common v0.37.0 // indirect
 	github.com/prometheus/procfs v0.8.0 // indirect

testbed/go.mod

@@ -165,7 +165,7 @@ require (
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/power-devops/perfstat v0.0.0-20210106213030-5aafc221ea8c // indirect
-	github.com/prometheus/client_golang v1.13.0 // indirect
+	github.com/prometheus/client_golang v1.13.1-0.20221013115219-dcea97eee2b3 // indirect
 	github.com/prometheus/client_model v0.3.0 // indirect
 	github.com/prometheus/common/sigv4 v0.1.0 // indirect
 	github.com/prometheus/procfs v0.8.0 // indirect