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Add more info to the inconsistent cardinality errors 

Signed-off-by: Peter Jausovec <peter.jausovec@oracle.com>
This commit is contained in:
Peter Jausovec 2018-10-31 10:59:13 -07:00
parent f30f428035
commit 902733d080
5 changed files with 9 additions and 5 deletions
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3
prometheus/counter.go
View File

@ -136,7 +136,8 @@ func NewCounterVec(opts CounterOpts, labelNames []string) *CounterVec {
return &CounterVec{
metricVec: newMetricVec(desc, func(lvs ...string) Metric {
if len(lvs) != len(desc.variableLabels) {
panic(errInconsistentCardinality)
err := fmt.Errorf("%s: labels and values for '%s' don't match: labels %v, values %v", errInconsistentCardinality, desc.fqName, desc.variableLabels, lvs)
panic(err)
}
result := &counter{desc: desc, labelPairs: makeLabelPairs(desc, lvs)}
result.init(result) // Init self-collection.

3
prometheus/gauge.go
View File

@ -147,7 +147,8 @@ func NewGaugeVec(opts GaugeOpts, labelNames []string) *GaugeVec {
return &GaugeVec{
metricVec: newMetricVec(desc, func(lvs ...string) Metric {
if len(lvs) != len(desc.variableLabels) {
panic(errInconsistentCardinality)
err := fmt.Errorf("%s: labels and values for '%s' don't match: labels %v, values %v", errInconsistentCardinality, desc.fqName, desc.variableLabels, labelValues)
panic(err)
}
result := &gauge{desc: desc, labelPairs: makeLabelPairs(desc, lvs)}
result.init(result) // Init self-collection.

3
prometheus/histogram.go
View File

@ -165,7 +165,8 @@ func NewHistogram(opts HistogramOpts) Histogram {
func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogram {
if len(desc.variableLabels) != len(labelValues) {
panic(errInconsistentCardinality)
err := fmt.Errorf("%s: labels and values for '%s' don't match: labels %v, values %v", errInconsistentCardinality, desc.fqName, desc.variableLabels, labelValues)
panic(err)
}
for _, n := range desc.variableLabels {

2
prometheus/labels.go
View File

@ -39,7 +39,7 @@ var errInconsistentCardinality = errors.New("inconsistent label cardinality")
func validateValuesInLabels(labels Labels, expectedNumberOfValues int) error {
if len(labels) != expectedNumberOfValues {
return errInconsistentCardinality
return fmt.Errorf("%s: number of labels and values don't match: expected %d, actual %d, labels %v", errInconsistentCardinality, expectedNumberOfValues, len(labels), labels)
}
for name, val := range labels {

3
prometheus/summary.go
View File

@ -181,7 +181,8 @@ func NewSummary(opts SummaryOpts) Summary {
func newSummary(desc *Desc, opts SummaryOpts, labelValues ...string) Summary {
if len(desc.variableLabels) != len(labelValues) {
panic(errInconsistentCardinality)
err := fmt.Errorf("%s: labels and values for '%s' don't match: labels %v, values %v", errInconsistentCardinality, desc.fqName, desc.variableLabels, labelValues)
panic(err)
}
for _, n := range desc.variableLabels {