Cut 1.20.5; update comments.
Signed-off-by: bwplotka <bwplotka@gmail.com> # Conflicts: # CHANGELOG.md
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## Unreleased
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## Unreleased
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## 1.20.5 / 2024-10-15
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* [BUGFIX] testutil: Reverted #1424; functions using compareMetricFamilies are (again) only failing if filtered metricNames are in the expected input.
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## 1.20.4 / 2024-09-07
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* [BUGFIX] histograms: Fix possible data race when appending exemplars vs metrics gather. #1623
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* [BUGFIX] histograms: Fix possible data race when appending exemplars vs metrics gather. #1623
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## 1.20.3 / 2024-09-05
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## 1.20.3 / 2024-09-05
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* [FEATURE] promlint: Add duplicated metric lint rule. #1472
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* [FEATURE] promlint: Add duplicated metric lint rule. #1472
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* [BUGFIX] promlint: Relax metric type in name linter rule. #1455
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* [BUGFIX] promlint: Relax metric type in name linter rule. #1455
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* [BUGFIX] promhttp: Make sure server instrumentation wrapping supports new and future extra responseWriter methods. #1480
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* [BUGFIX] promhttp: Make sure server instrumentation wrapping supports new and future extra responseWriter methods. #1480
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* [BUGFIX] testutil: Functions using compareMetricFamilies are now failing if filtered metricNames are not in the input. #1424
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* [BUGFIX] **breaking** testutil: Functions using compareMetricFamilies are now failing if filtered metricNames are not in the input. #1424 (reverted in 1.20.5)
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## 1.19.0 / 2024-02-27
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## 1.19.0 / 2024-02-27
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@ -158,6 +158,9 @@ func GatherAndCount(g prometheus.Gatherer, metricNames ...string) (int, error) {
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// ScrapeAndCompare calls a remote exporter's endpoint which is expected to return some metrics in
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// ScrapeAndCompare calls a remote exporter's endpoint which is expected to return some metrics in
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// plain text format. Then it compares it with the results that the `expected` would return.
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// plain text format. Then it compares it with the results that the `expected` would return.
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// If the `metricNames` is not empty it would filter the comparison only to the given metric names.
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// If the `metricNames` is not empty it would filter the comparison only to the given metric names.
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//
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// NOTE: Be mindful of accidental discrepancies between expected and metricNames; metricNames filter
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// both expected and scraped metrics. See https://github.com/prometheus/client_golang/issues/1351.
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func ScrapeAndCompare(url string, expected io.Reader, metricNames ...string) error {
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func ScrapeAndCompare(url string, expected io.Reader, metricNames ...string) error {
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resp, err := http.Get(url)
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resp, err := http.Get(url)
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if err != nil {
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if err != nil {
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@ -185,6 +188,9 @@ func ScrapeAndCompare(url string, expected io.Reader, metricNames ...string) err
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// CollectAndCompare collects the metrics identified by `metricNames` and compares them in the Prometheus text
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// CollectAndCompare collects the metrics identified by `metricNames` and compares them in the Prometheus text
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// exposition format to the data read from expected.
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// exposition format to the data read from expected.
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//
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// NOTE: Be mindful of accidental discrepancies between expected and metricNames; metricNames filter
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// both expected and collected metrics. See https://github.com/prometheus/client_golang/issues/1351.
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func CollectAndCompare(c prometheus.Collector, expected io.Reader, metricNames ...string) error {
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func CollectAndCompare(c prometheus.Collector, expected io.Reader, metricNames ...string) error {
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reg := prometheus.NewPedanticRegistry()
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reg := prometheus.NewPedanticRegistry()
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if err := reg.Register(c); err != nil {
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if err := reg.Register(c); err != nil {
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@ -197,6 +203,9 @@ func CollectAndCompare(c prometheus.Collector, expected io.Reader, metricNames .
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// it to an expected output read from the provided Reader in the Prometheus text
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// it to an expected output read from the provided Reader in the Prometheus text
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// exposition format. If any metricNames are provided, only metrics with those
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// exposition format. If any metricNames are provided, only metrics with those
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// names are compared.
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// names are compared.
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//
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// NOTE: Be mindful of accidental discrepancies between expected and metricNames; metricNames filter
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// both expected and gathered metrics. See https://github.com/prometheus/client_golang/issues/1351.
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func GatherAndCompare(g prometheus.Gatherer, expected io.Reader, metricNames ...string) error {
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func GatherAndCompare(g prometheus.Gatherer, expected io.Reader, metricNames ...string) error {
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return TransactionalGatherAndCompare(prometheus.ToTransactionalGatherer(g), expected, metricNames...)
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return TransactionalGatherAndCompare(prometheus.ToTransactionalGatherer(g), expected, metricNames...)
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}
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}
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@ -205,6 +214,9 @@ func GatherAndCompare(g prometheus.Gatherer, expected io.Reader, metricNames ...
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// it to an expected output read from the provided Reader in the Prometheus text
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// it to an expected output read from the provided Reader in the Prometheus text
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// exposition format. If any metricNames are provided, only metrics with those
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// exposition format. If any metricNames are provided, only metrics with those
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// names are compared.
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// names are compared.
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//
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// NOTE: Be mindful of accidental discrepancies between expected and metricNames; metricNames filter
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// both expected and gathered metrics. See https://github.com/prometheus/client_golang/issues/1351.
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func TransactionalGatherAndCompare(g prometheus.TransactionalGatherer, expected io.Reader, metricNames ...string) error {
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func TransactionalGatherAndCompare(g prometheus.TransactionalGatherer, expected io.Reader, metricNames ...string) error {
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got, done, err := g.Gather()
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got, done, err := g.Gather()
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defer done()
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defer done()
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