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| author | 2025-09-04 15:29:27 +0200 | |
|---|---|---|
| committer | 2025-09-04 15:29:27 +0200 | |
| commit | 78defcd9166a202eb3140dc27afd288e1f9bfec4 (patch) | |
| tree | dfe061abc810096f0141b7f585d38401c099c488 /vendor/go.opentelemetry.io/otel/sdk/metric/config.go | |
| parent | [performance] faster request id generation (#4405) (diff) | |
| download | gotosocial-78defcd9166a202eb3140dc27afd288e1f9bfec4.tar.xz | |
[chore] bump dependencies (#4406)
- codeberg.org/gruf/go-ffmpreg: v0.6.9 -> v0.6.10
- github.com/ncruces/go-sqlite3: v0.27.1 -> v0.28.0
- github.com/stretchr/testify: v1.10.0 -> v1.11.1
- github.com/tdewolff/minify/v2 v2.23.11 -> v2.24.2
- go.opentelemetry.io/otel{,/*}: v1.37.0 -> v1.38.0
- go.opentelemetry.io/contrib/*: v0.62.0 -> v0.63.0
Reviewed-on: https://codeberg.org/superseriousbusiness/gotosocial/pulls/4406
Co-authored-by: kim <grufwub@gmail.com>
Co-committed-by: kim <grufwub@gmail.com>
Diffstat (limited to 'vendor/go.opentelemetry.io/otel/sdk/metric/config.go')
| -rw-r--r-- | vendor/go.opentelemetry.io/otel/sdk/metric/config.go | 46 |
1 files changed, 40 insertions, 6 deletions
diff --git a/vendor/go.opentelemetry.io/otel/sdk/metric/config.go b/vendor/go.opentelemetry.io/otel/sdk/metric/config.go index 203cd9d65..c6440a134 100644 --- a/vendor/go.opentelemetry.io/otel/sdk/metric/config.go +++ b/vendor/go.opentelemetry.io/otel/sdk/metric/config.go @@ -7,6 +7,7 @@ import ( "context" "errors" "os" + "strconv" "strings" "sync" @@ -17,12 +18,15 @@ import ( // config contains configuration options for a MeterProvider. type config struct { - res *resource.Resource - readers []Reader - views []View - exemplarFilter exemplar.Filter + res *resource.Resource + readers []Reader + views []View + exemplarFilter exemplar.Filter + cardinalityLimit int } +const defaultCardinalityLimit = 0 + // readerSignals returns a force-flush and shutdown function for a // MeterProvider to call in their respective options. All Readers c contains // will have their force-flush and shutdown methods unified into returned @@ -69,8 +73,9 @@ func unifyShutdown(funcs []func(context.Context) error) func(context.Context) er // newConfig returns a config configured with options. func newConfig(options []Option) config { conf := config{ - res: resource.Default(), - exemplarFilter: exemplar.TraceBasedFilter, + res: resource.Default(), + exemplarFilter: exemplar.TraceBasedFilter, + cardinalityLimit: cardinalityLimitFromEnv(), } for _, o := range meterProviderOptionsFromEnv() { conf = o.apply(conf) @@ -155,6 +160,21 @@ func WithExemplarFilter(filter exemplar.Filter) Option { }) } +// WithCardinalityLimit sets the cardinality limit for the MeterProvider. +// +// The cardinality limit is the hard limit on the number of metric datapoints +// that can be collected for a single instrument in a single collect cycle. +// +// Setting this to a zero or negative value means no limit is applied. +func WithCardinalityLimit(limit int) Option { + // For backward compatibility, the environment variable `OTEL_GO_X_CARDINALITY_LIMIT` + // can also be used to set this value. + return optionFunc(func(cfg config) config { + cfg.cardinalityLimit = limit + return cfg + }) +} + func meterProviderOptionsFromEnv() []Option { var opts []Option // https://github.com/open-telemetry/opentelemetry-specification/blob/d4b241f451674e8f611bb589477680341006ad2b/specification/configuration/sdk-environment-variables.md#exemplar @@ -170,3 +190,17 @@ func meterProviderOptionsFromEnv() []Option { } return opts } + +func cardinalityLimitFromEnv() int { + const cardinalityLimitKey = "OTEL_GO_X_CARDINALITY_LIMIT" + v := strings.TrimSpace(os.Getenv(cardinalityLimitKey)) + if v == "" { + return defaultCardinalityLimit + } + n, err := strconv.Atoi(v) + if err != nil { + otel.Handle(err) + return defaultCardinalityLimit + } + return n +} |
