1.13.0 / 2022-08-06

• [CHANGE] Minimum required Go version is now 1.17 (we also test client_golang against the new 1.19 version).
• [ENHANCEMENT] Added prometheus.TransactionalGatherer interface for promhttp.Handler use which allows using low allocation update techniques for custom collectors. #989
• [ENHANCEMENT] Added exemplar support to prometheus.NewConstHistogram. See ExampleNewConstHistogram_WithExemplar example on how to use it. #986
• [ENHANCEMENT] Query requests are now retried after network error. #1022
• [ENHANCEMENT] prometheus/push.Pusher now has context-aware methods that pass context to HTTP requests. #1028
• [ENHANCEMENT] prometheus/push.Pusher has now Error method that retrieve last error. #1075
• [ENHANCEMENT] testutil.GatherAndCompare provides now readable diff on failed comparisons. #998
• [ENHANCEMENT] Query API now supports timeouts. #1014
• [ENHANCEMENT] New MetricVec method DeletePartialMatch(labels Labels) for deleting all metrics that match provided labels. #1013
• [ENHANCEMENT] api.Config now accepts passing custom *http.Client. #1025
• [BUGFIX] Raise exemplar labels limit from 64 to 128 bytes as specified in OpenMetrics spec. #1091
• [BUGFIX] Allow adding exemplar to +Inf bucket to const histograms. #1094
• [ENHANCEMENT] Most promhttp.Instrument* middlewares now support adding exemplars to metrics. This allows hooking those to your tracing middleware that retrieves trace ID and puts it in exemplar if present. #1055
• [ENHANCEMENT] Added testutil.ScrapeAndCompare method. #1043
• [BUGFIX] Fixed GopherJS build support. #897
• [ENHANCEMENT] ⚠️ Added way to specify what runtime/metrics collectors.NewGoCollector should use. See ExampleGoCollector_WithAdvancedGoMetrics. #1102

New Contributors ❤️

• @alissa-tung made their first contribution in #1000
• @wperron made their first contribution in #986
• @zhijian-pro made their first contribution in #1005
• @dohnto made their first contribution in #1021
• @tatsuhiro-t made their first contribution in #1028
• @sourikghosh made their first contribution in #998
• @josephwoodward made their first contribution in #1014
• @stone-z made their first contribution in #1013
• @yolossn made their first contribution in #1025
• @xrstf made their first contribution in #1039
• @dependabot made their first contribution in #1051
• @sazary made their first contribution in #1056
• @oiooj made their first contribution in #1075
• @fredr made their first contribution in #1095
• @inosato made their first contribution in #1096
• @arun-shopify made their first contribution in #1094
• @paralin made their first contribution in #897

Commits

• go.mod: Set minimal support version of go to 1.15 by @mrueg in #980
• Enable CodeQL Analysis by @kakkoyun in #982
• Added Transactional Gatherer allowed cached solutions by @bwplotka in #989
• Synchronize common files from prometheus/prometheus by @prombot in #992
• Synchronize common files from prometheus/prometheus by @prombot in #1003
• Fix deprecated NewBuildInfoCollector API by @alissa-tung in #1000
• Add exemplar support for const histogram by @wperron in #986
• Fixed lint warning. by @bwplotka in #1007
• .circleci: Add config to test against go1.18 by @kakkoyun in #1006
• When prefix is empty, no more dots should be written by @zhijian-pro in #1005
• Add statebot config by @kakkoyun in #1001
• Synchronize common files from prometheus/prometheus by @prombot in #1009
• Remove workaround for pre go1.15 by @johejo in #1010
• go.mod: Update dependencies by @mrueg in #1018
• Synchronize common files from prometheus/prometheus by @prombot in #1019
• Refactor apiClientImpl.DoGetFallback by @dohnto in #1021
• Added info about our slack channel. by @bwplotka in #1029
• push: Add PushContext and AddContext to Pusher by @tatsuhiro-t in #1028
• Make Query requests idempotent by @dohnto in #1022
• Bump minimum required Go version to 1.16 by @mrueg in https://github.com/prometheus/client_golang/pull/10327
• Update query API to support timeouts by @josephwoodward in #1014
• Implement deletion based on partially matching labels by @stone-z in #1013
• Document WithTimeout option for Query/QueryRange by @josephwoodward in #1037
• client: Allow configuration of http client by @yolossn in #1025
• update branch names in a few links by @xrstf in #1039
• Synchronize common files from prometheus/prometheus by @prombot in #1045
• Synchronize common files from prometheus/prometheus by @prombot in #1046
• prometheus: Fix convention violating names for generated collector metrics by @kakkoyun in #1048
• Remove -Inf buckets from go collector histograms by @kakkoyun in #1049
• Enable dependabot by @SuperQ in #1050
• Bump github.com/prometheus/common from 0.33.0 to 0.34.0 by @dependabot in #1051
• Cut v1.12.2 by @kakkoyun in #1052
• Update readme after v0.12.2 by @kakkoyun in #1053
• Synchronize common files from prometheus/prometheus by @prombot in #1061
• Update minimum supported Go version (1.17) by @SuperQ in #1062
• Add GitHub settings by @SuperQ in #1063
• Synchronize common files from prometheus/prometheus by @prombot in #1064
• Enable same linters as the Prometheus repo itself by @sazary in #1056
• Synchronize common files from prometheus/prometheus by @prombot in #1068
• Add Error API for pusher by @oiooj in #1075
• Bump github.com/prometheus/common from 0.34.0 to 0.35.0 by @dependabot in #1076
• Merge release-1.12 branch back into main by @beorn7 in #1079
• Fix version number in VERSION by @beorn7 in #1080
• Merging release branch back to main again by @beorn7 in #1081
• Raise exemplar labels limit from 64 to 128 by @bboreham in #1091
• Update documentation for exemplar label limit by @fredr in #1095
• Bump github.com/prometheus/common from 0.35.0 to 0.37.0 by @dependabot in #1098
• Bump google.golang.org/protobuf from 1.28.0 to 1.28.1 by @dependabot in #1099
• Remove ioutil by @inosato in #1096
• Bump github.com/prometheus/procfs from 0.7.3 to 0.8.0 by @dependabot in #1097
• explicitly add +inf bucket in withExemplarsMetric by @arun-shopify in #1094
• Ensure tests verify request params by @josephwoodward in #1047
• Fixed support for unordered input of exemplars. by @bwplotka in #1100
• Added exemplar support to http middleware. by @bwplotka in #1055
• fix assorted oddities found by golangci-lint by @xrstf in #1040
• Generate new Go runtime metrics for go 1.19 by @kakkoyun in #1105
• testutil: Add ScrapeAndCompare by @sazary in #1043
• Fix build against GopherJS by @paralin in #897
• collectors.GoCollector: Added rule support for granular metric configuration. by @bwplotka in #1102
• Cut 1.13.0 by @bwplotka in #1110