Update dependencies
This commit is contained in:
180
vendor/github.com/prometheus/common/expfmt/text_create.go
generated
vendored
180
vendor/github.com/prometheus/common/expfmt/text_create.go
generated
vendored
@@ -22,9 +22,9 @@ import (
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"strings"
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"sync"
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"github.com/prometheus/common/model"
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dto "github.com/prometheus/client_model/go"
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"github.com/prometheus/common/model"
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)
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// enhancedWriter has all the enhanced write functions needed here. bufio.Writer
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@@ -62,6 +62,18 @@ var (
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// contains duplicate metrics or invalid metric or label names, the conversion
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// will result in invalid text format output.
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//
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// If metric names conform to the legacy validation pattern, they will be placed
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// outside the brackets in the traditional way, like `foo{}`. If the metric name
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// fails the legacy validation check, it will be placed quoted inside the
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// brackets: `{"foo"}`. As stated above, the input is assumed to be santized and
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// no error will be thrown in this case.
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//
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// Similar to metric names, if label names conform to the legacy validation
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// pattern, they will be unquoted as normal, like `foo{bar="baz"}`. If the label
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// name fails the legacy validation check, it will be quoted:
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// `foo{"bar"="baz"}`. As stated above, the input is assumed to be santized and
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// no error will be thrown in this case.
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//
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// This method fulfills the type 'prometheus.encoder'.
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func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (written int, err error) {
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// Fail-fast checks.
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@@ -96,38 +108,38 @@ func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (written int, err e
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n, err = w.WriteString("# HELP ")
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written += n
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if err != nil {
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return
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return written, err
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}
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n, err = w.WriteString(name)
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n, err = writeName(w, name)
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written += n
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if err != nil {
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return
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return written, err
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}
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err = w.WriteByte(' ')
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written++
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if err != nil {
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return
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return written, err
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}
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n, err = writeEscapedString(w, *in.Help, false)
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written += n
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if err != nil {
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return
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return written, err
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}
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err = w.WriteByte('\n')
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written++
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if err != nil {
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return
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return written, err
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}
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}
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n, err = w.WriteString("# TYPE ")
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written += n
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if err != nil {
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return
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return written, err
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}
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n, err = w.WriteString(name)
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n, err = writeName(w, name)
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written += n
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if err != nil {
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return
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return written, err
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}
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metricType := in.GetType()
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switch metricType {
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@@ -139,14 +151,17 @@ func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (written int, err e
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n, err = w.WriteString(" summary\n")
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case dto.MetricType_UNTYPED:
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n, err = w.WriteString(" untyped\n")
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case dto.MetricType_HISTOGRAM:
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case dto.MetricType_HISTOGRAM, dto.MetricType_GAUGE_HISTOGRAM:
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// The classic Prometheus text format has no notion of a gauge
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// histogram. We render a gauge histogram in the same way as a
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// regular histogram.
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n, err = w.WriteString(" histogram\n")
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default:
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return written, fmt.Errorf("unknown metric type %s", metricType.String())
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}
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written += n
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if err != nil {
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return
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return written, err
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}
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// Finally the samples, one line for each.
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@@ -196,7 +211,7 @@ func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (written int, err e
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)
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written += n
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if err != nil {
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return
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return written, err
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}
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}
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n, err = writeSample(
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@@ -205,13 +220,13 @@ func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (written int, err e
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)
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written += n
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if err != nil {
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return
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return written, err
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}
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n, err = writeSample(
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w, name, "_count", metric, "", 0,
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float64(metric.Summary.GetSampleCount()),
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)
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case dto.MetricType_HISTOGRAM:
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case dto.MetricType_HISTOGRAM, dto.MetricType_GAUGE_HISTOGRAM:
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if metric.Histogram == nil {
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return written, fmt.Errorf(
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"expected histogram in metric %s %s", name, metric,
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@@ -219,28 +234,36 @@ func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (written int, err e
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}
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infSeen := false
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for _, b := range metric.Histogram.Bucket {
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v := b.GetCumulativeCountFloat()
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if v == 0 {
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v = float64(b.GetCumulativeCount())
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}
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n, err = writeSample(
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w, name, "_bucket", metric,
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model.BucketLabel, b.GetUpperBound(),
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float64(b.GetCumulativeCount()),
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v,
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)
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written += n
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if err != nil {
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return
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return written, err
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}
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if math.IsInf(b.GetUpperBound(), +1) {
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infSeen = true
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}
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}
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if !infSeen {
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v := metric.Histogram.GetSampleCountFloat()
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if v == 0 {
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v = float64(metric.Histogram.GetSampleCount())
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}
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n, err = writeSample(
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w, name, "_bucket", metric,
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model.BucketLabel, math.Inf(+1),
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float64(metric.Histogram.GetSampleCount()),
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v,
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)
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written += n
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if err != nil {
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return
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return written, err
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}
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}
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n, err = writeSample(
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@@ -249,12 +272,13 @@ func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (written int, err e
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)
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written += n
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if err != nil {
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return
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return written, err
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}
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n, err = writeSample(
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w, name, "_count", metric, "", 0,
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float64(metric.Histogram.GetSampleCount()),
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)
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v := metric.Histogram.GetSampleCountFloat()
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if v == 0 {
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v = float64(metric.Histogram.GetSampleCount())
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}
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n, err = writeSample(w, name, "_count", metric, "", 0, v)
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default:
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return written, fmt.Errorf(
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"unexpected type in metric %s %s", name, metric,
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@@ -262,10 +286,10 @@ func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (written int, err e
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}
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written += n
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if err != nil {
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return
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return written, err
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}
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}
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return
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return written, err
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}
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// writeSample writes a single sample in text format to w, given the metric
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@@ -280,21 +304,9 @@ func writeSample(
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additionalLabelName string, additionalLabelValue float64,
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value float64,
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) (int, error) {
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var written int
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n, err := w.WriteString(name)
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written += n
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if err != nil {
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return written, err
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}
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if suffix != "" {
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n, err = w.WriteString(suffix)
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written += n
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if err != nil {
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return written, err
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}
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}
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n, err = writeLabelPairs(
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w, metric.Label, additionalLabelName, additionalLabelValue,
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written := 0
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n, err := writeNameAndLabelPairs(
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w, name+suffix, metric.Label, additionalLabelName, additionalLabelValue,
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)
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written += n
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if err != nil {
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@@ -330,32 +342,64 @@ func writeSample(
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return written, nil
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}
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// writeLabelPairs converts a slice of LabelPair proto messages plus the
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// explicitly given additional label pair into text formatted as required by the
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// text format and writes it to 'w'. An empty slice in combination with an empty
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// string 'additionalLabelName' results in nothing being written. Otherwise, the
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// label pairs are written, escaped as required by the text format, and enclosed
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// in '{...}'. The function returns the number of bytes written and any error
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// encountered.
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func writeLabelPairs(
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// writeNameAndLabelPairs converts a slice of LabelPair proto messages plus the
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// explicitly given metric name and additional label pair into text formatted as
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// required by the text format and writes it to 'w'. An empty slice in
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// combination with an empty string 'additionalLabelName' results in nothing
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// being written. Otherwise, the label pairs are written, escaped as required by
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// the text format, and enclosed in '{...}'. The function returns the number of
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// bytes written and any error encountered. If the metric name is not
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// legacy-valid, it will be put inside the brackets as well. Legacy-invalid
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// label names will also be quoted.
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func writeNameAndLabelPairs(
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w enhancedWriter,
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name string,
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in []*dto.LabelPair,
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additionalLabelName string, additionalLabelValue float64,
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) (int, error) {
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if len(in) == 0 && additionalLabelName == "" {
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return 0, nil
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}
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var (
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written int
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separator byte = '{'
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written int
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separator byte = '{'
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metricInsideBraces = false
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)
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if name != "" {
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// If the name does not pass the legacy validity check, we must put the
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// metric name inside the braces.
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if !model.LegacyValidation.IsValidMetricName(name) {
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metricInsideBraces = true
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err := w.WriteByte(separator)
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written++
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if err != nil {
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return written, err
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}
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separator = ','
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}
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n, err := writeName(w, name)
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written += n
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if err != nil {
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return written, err
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}
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}
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if len(in) == 0 && additionalLabelName == "" {
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if metricInsideBraces {
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err := w.WriteByte('}')
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written++
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if err != nil {
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return written, err
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}
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}
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return written, nil
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}
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for _, lp := range in {
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err := w.WriteByte(separator)
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written++
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if err != nil {
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return written, err
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}
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n, err := w.WriteString(lp.GetName())
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n, err := writeName(w, lp.GetName())
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written += n
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if err != nil {
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return written, err
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@@ -462,3 +506,27 @@ func writeInt(w enhancedWriter, i int64) (int, error) {
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numBufPool.Put(bp)
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return written, err
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}
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// writeName writes a string as-is if it complies with the legacy naming
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// scheme, or escapes it in double quotes if not.
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func writeName(w enhancedWriter, name string) (int, error) {
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if model.LegacyValidation.IsValidMetricName(name) {
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return w.WriteString(name)
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}
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var written int
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var err error
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err = w.WriteByte('"')
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written++
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if err != nil {
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return written, err
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}
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var n int
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n, err = writeEscapedString(w, name, true)
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written += n
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if err != nil {
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return written, err
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}
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err = w.WriteByte('"')
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written++
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return written, err
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}
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