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Add exemplar support for const histogram #986

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merged 7 commits into from
Mar 17, 2022
Merged

Add exemplar support for const histogram #986

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d7f6f6f
Add support for exemplars on constHistogram
arun-shopify Jan 21, 2022
3d744ce
remove GetExemplars function
wperron Feb 15, 2022
ad6f1f6
fixed linting warnings
wperron Feb 15, 2022
47d3c54
Add values to correct bucket
wperron Mar 7, 2022
16ac129
Misc fixes
wperron Mar 11, 2022
daaf45b
avoid panic when there are fewer buckets than exemplars
arun-shopify Mar 9, 2022
3c2e890
Added MustNewMetricWithExemplars that wraps metrics with exemplar (#3)
bwplotka Mar 16, 2022
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avoid panic when there are fewer buckets than exemplars 
Co-authored-by: Arun Mahendra <[email protected]>

Signed-off-by: William Perron <[email protected]>
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@arun-shopify @wperron
arun-shopify authored and wperron committed Mar 11, 2022
commit daaf45b2ed492ecb3dc13038819f2513998d400f
3 changes: 2 additions & 1 deletion prometheus/histogram.go
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Original file line number Diff line number Diff line change
Expand Up @@ -604,7 +604,8 @@ func (h *constHistogram) Write(out *dto.Metric) error {

if len(h.exemplars) > 0 {
r := len(buckets)
for i := 0; i < r; i++ {
l := len(h.exemplars)
for i := 0; i < r && i < l; i++ {
bound := sort.SearchFloat64s(bounds, *h.exemplars[i].Value)
// Only append the exemplar if it's within the bounds defined in the
// buckets.
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