Update dependencies
This commit is contained in:
170
vendor/github.com/prometheus/common/expfmt/text_parse.go
generated
vendored
170
vendor/github.com/prometheus/common/expfmt/text_parse.go
generated
vendored
@@ -16,17 +16,15 @@ package expfmt
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"math"
|
||||
"strconv"
|
||||
"strings"
|
||||
"unicode/utf8"
|
||||
|
||||
dto "github.com/prometheus/client_model/go"
|
||||
"google.golang.org/protobuf/proto"
|
||||
|
||||
"github.com/golang/protobuf/proto" //nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
|
||||
"github.com/prometheus/common/model"
|
||||
)
|
||||
|
||||
@@ -60,7 +58,6 @@ type TextParser struct {
|
||||
currentMF *dto.MetricFamily
|
||||
currentMetric *dto.Metric
|
||||
currentLabelPair *dto.LabelPair
|
||||
currentLabelPairs []*dto.LabelPair // Temporarily stores label pairs while parsing a metric line.
|
||||
|
||||
// The remaining member variables are only used for summaries/histograms.
|
||||
currentLabels map[string]string // All labels including '__name__' but excluding 'quantile'/'le'
|
||||
@@ -75,9 +72,6 @@ type TextParser struct {
|
||||
// count and sum of that summary/histogram.
|
||||
currentIsSummaryCount, currentIsSummarySum bool
|
||||
currentIsHistogramCount, currentIsHistogramSum bool
|
||||
// These indicate if the metric name from the current line being parsed is inside
|
||||
// braces and if that metric name was found respectively.
|
||||
currentMetricIsInsideBraces, currentMetricInsideBracesIsPresent bool
|
||||
}
|
||||
|
||||
// TextToMetricFamilies reads 'in' as the simple and flat text-based exchange
|
||||
@@ -118,7 +112,7 @@ func (p *TextParser) TextToMetricFamilies(in io.Reader) (map[string]*dto.MetricF
|
||||
// stream. Turn this error into something nicer and more
|
||||
// meaningful. (io.EOF is often used as a signal for the legitimate end
|
||||
// of an input stream.)
|
||||
if p.err != nil && errors.Is(p.err, io.EOF) {
|
||||
if p.err == io.EOF {
|
||||
p.parseError("unexpected end of input stream")
|
||||
}
|
||||
return p.metricFamiliesByName, p.err
|
||||
@@ -141,21 +135,18 @@ func (p *TextParser) reset(in io.Reader) {
|
||||
}
|
||||
p.currentQuantile = math.NaN()
|
||||
p.currentBucket = math.NaN()
|
||||
p.currentMF = nil
|
||||
}
|
||||
|
||||
// startOfLine represents the state where the next byte read from p.buf is the
|
||||
// start of a line (or whitespace leading up to it).
|
||||
func (p *TextParser) startOfLine() stateFn {
|
||||
p.lineCount++
|
||||
p.currentMetricIsInsideBraces = false
|
||||
p.currentMetricInsideBracesIsPresent = false
|
||||
if p.skipBlankTab(); p.err != nil {
|
||||
// This is the only place that we expect to see io.EOF,
|
||||
// which is not an error but the signal that we are done.
|
||||
// Any other error that happens to align with the start of
|
||||
// a line is still an error.
|
||||
if errors.Is(p.err, io.EOF) {
|
||||
if p.err == io.EOF {
|
||||
p.err = nil
|
||||
}
|
||||
return nil
|
||||
@@ -165,9 +156,6 @@ func (p *TextParser) startOfLine() stateFn {
|
||||
return p.startComment
|
||||
case '\n':
|
||||
return p.startOfLine // Empty line, start the next one.
|
||||
case '{':
|
||||
p.currentMetricIsInsideBraces = true
|
||||
return p.readingLabels
|
||||
}
|
||||
return p.readingMetricName
|
||||
}
|
||||
@@ -285,8 +273,6 @@ func (p *TextParser) startLabelName() stateFn {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
if p.currentByte == '}' {
|
||||
p.currentMetric.Label = append(p.currentMetric.Label, p.currentLabelPairs...)
|
||||
p.currentLabelPairs = nil
|
||||
if p.skipBlankTab(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
@@ -299,45 +285,6 @@ func (p *TextParser) startLabelName() stateFn {
|
||||
p.parseError(fmt.Sprintf("invalid label name for metric %q", p.currentMF.GetName()))
|
||||
return nil
|
||||
}
|
||||
if p.skipBlankTabIfCurrentBlankTab(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
if p.currentByte != '=' {
|
||||
if p.currentMetricIsInsideBraces {
|
||||
if p.currentMetricInsideBracesIsPresent {
|
||||
p.parseError(fmt.Sprintf("multiple metric names for metric %q", p.currentMF.GetName()))
|
||||
return nil
|
||||
}
|
||||
switch p.currentByte {
|
||||
case ',':
|
||||
p.setOrCreateCurrentMF()
|
||||
if p.currentMF.Type == nil {
|
||||
p.currentMF.Type = dto.MetricType_UNTYPED.Enum()
|
||||
}
|
||||
p.currentMetric = &dto.Metric{}
|
||||
p.currentMetricInsideBracesIsPresent = true
|
||||
return p.startLabelName
|
||||
case '}':
|
||||
p.setOrCreateCurrentMF()
|
||||
if p.currentMF.Type == nil {
|
||||
p.currentMF.Type = dto.MetricType_UNTYPED.Enum()
|
||||
}
|
||||
p.currentMetric = &dto.Metric{}
|
||||
p.currentMetric.Label = append(p.currentMetric.Label, p.currentLabelPairs...)
|
||||
p.currentLabelPairs = nil
|
||||
if p.skipBlankTab(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
return p.readingValue
|
||||
default:
|
||||
p.parseError(fmt.Sprintf("unexpected end of metric name %q", p.currentByte))
|
||||
return nil
|
||||
}
|
||||
}
|
||||
p.parseError(fmt.Sprintf("expected '=' after label name, found %q", p.currentByte))
|
||||
p.currentLabelPairs = nil
|
||||
return nil
|
||||
}
|
||||
p.currentLabelPair = &dto.LabelPair{Name: proto.String(p.currentToken.String())}
|
||||
if p.currentLabelPair.GetName() == string(model.MetricNameLabel) {
|
||||
p.parseError(fmt.Sprintf("label name %q is reserved", model.MetricNameLabel))
|
||||
@@ -347,17 +294,23 @@ func (p *TextParser) startLabelName() stateFn {
|
||||
// labels to 'real' labels.
|
||||
if !(p.currentMF.GetType() == dto.MetricType_SUMMARY && p.currentLabelPair.GetName() == model.QuantileLabel) &&
|
||||
!(p.currentMF.GetType() == dto.MetricType_HISTOGRAM && p.currentLabelPair.GetName() == model.BucketLabel) {
|
||||
p.currentLabelPairs = append(p.currentLabelPairs, p.currentLabelPair)
|
||||
p.currentMetric.Label = append(p.currentMetric.Label, p.currentLabelPair)
|
||||
}
|
||||
if p.skipBlankTabIfCurrentBlankTab(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
if p.currentByte != '=' {
|
||||
p.parseError(fmt.Sprintf("expected '=' after label name, found %q", p.currentByte))
|
||||
return nil
|
||||
}
|
||||
// Check for duplicate label names.
|
||||
labels := make(map[string]struct{})
|
||||
for _, l := range p.currentLabelPairs {
|
||||
for _, l := range p.currentMetric.Label {
|
||||
lName := l.GetName()
|
||||
if _, exists := labels[lName]; !exists {
|
||||
labels[lName] = struct{}{}
|
||||
} else {
|
||||
p.parseError(fmt.Sprintf("duplicate label names for metric %q", p.currentMF.GetName()))
|
||||
p.currentLabelPairs = nil
|
||||
return nil
|
||||
}
|
||||
}
|
||||
@@ -390,7 +343,6 @@ func (p *TextParser) startLabelValue() stateFn {
|
||||
if p.currentQuantile, p.err = parseFloat(p.currentLabelPair.GetValue()); p.err != nil {
|
||||
// Create a more helpful error message.
|
||||
p.parseError(fmt.Sprintf("expected float as value for 'quantile' label, got %q", p.currentLabelPair.GetValue()))
|
||||
p.currentLabelPairs = nil
|
||||
return nil
|
||||
}
|
||||
} else {
|
||||
@@ -417,19 +369,12 @@ func (p *TextParser) startLabelValue() stateFn {
|
||||
return p.startLabelName
|
||||
|
||||
case '}':
|
||||
if p.currentMF == nil {
|
||||
p.parseError("invalid metric name")
|
||||
return nil
|
||||
}
|
||||
p.currentMetric.Label = append(p.currentMetric.Label, p.currentLabelPairs...)
|
||||
p.currentLabelPairs = nil
|
||||
if p.skipBlankTab(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
return p.readingValue
|
||||
default:
|
||||
p.parseError(fmt.Sprintf("unexpected end of label value %q", p.currentLabelPair.GetValue()))
|
||||
p.currentLabelPairs = nil
|
||||
return nil
|
||||
}
|
||||
}
|
||||
@@ -638,8 +583,6 @@ func (p *TextParser) readTokenUntilNewline(recognizeEscapeSequence bool) {
|
||||
p.currentToken.WriteByte(p.currentByte)
|
||||
case 'n':
|
||||
p.currentToken.WriteByte('\n')
|
||||
case '"':
|
||||
p.currentToken.WriteByte('"')
|
||||
default:
|
||||
p.parseError(fmt.Sprintf("invalid escape sequence '\\%c'", p.currentByte))
|
||||
return
|
||||
@@ -665,45 +608,13 @@ func (p *TextParser) readTokenUntilNewline(recognizeEscapeSequence bool) {
|
||||
// but not into p.currentToken.
|
||||
func (p *TextParser) readTokenAsMetricName() {
|
||||
p.currentToken.Reset()
|
||||
// A UTF-8 metric name must be quoted and may have escaped characters.
|
||||
quoted := false
|
||||
escaped := false
|
||||
if !isValidMetricNameStart(p.currentByte) {
|
||||
return
|
||||
}
|
||||
for p.err == nil {
|
||||
if escaped {
|
||||
switch p.currentByte {
|
||||
case '\\':
|
||||
p.currentToken.WriteByte(p.currentByte)
|
||||
case 'n':
|
||||
p.currentToken.WriteByte('\n')
|
||||
case '"':
|
||||
p.currentToken.WriteByte('"')
|
||||
default:
|
||||
p.parseError(fmt.Sprintf("invalid escape sequence '\\%c'", p.currentByte))
|
||||
return
|
||||
}
|
||||
escaped = false
|
||||
} else {
|
||||
switch p.currentByte {
|
||||
case '"':
|
||||
quoted = !quoted
|
||||
if !quoted {
|
||||
p.currentByte, p.err = p.buf.ReadByte()
|
||||
return
|
||||
}
|
||||
case '\n':
|
||||
p.parseError(fmt.Sprintf("metric name %q contains unescaped new-line", p.currentToken.String()))
|
||||
return
|
||||
case '\\':
|
||||
escaped = true
|
||||
default:
|
||||
p.currentToken.WriteByte(p.currentByte)
|
||||
}
|
||||
}
|
||||
for {
|
||||
p.currentToken.WriteByte(p.currentByte)
|
||||
p.currentByte, p.err = p.buf.ReadByte()
|
||||
if !isValidMetricNameContinuation(p.currentByte, quoted) || (!quoted && p.currentByte == ' ') {
|
||||
if p.err != nil || !isValidMetricNameContinuation(p.currentByte) {
|
||||
return
|
||||
}
|
||||
}
|
||||
@@ -715,45 +626,13 @@ func (p *TextParser) readTokenAsMetricName() {
|
||||
// but not into p.currentToken.
|
||||
func (p *TextParser) readTokenAsLabelName() {
|
||||
p.currentToken.Reset()
|
||||
// A UTF-8 label name must be quoted and may have escaped characters.
|
||||
quoted := false
|
||||
escaped := false
|
||||
if !isValidLabelNameStart(p.currentByte) {
|
||||
return
|
||||
}
|
||||
for p.err == nil {
|
||||
if escaped {
|
||||
switch p.currentByte {
|
||||
case '\\':
|
||||
p.currentToken.WriteByte(p.currentByte)
|
||||
case 'n':
|
||||
p.currentToken.WriteByte('\n')
|
||||
case '"':
|
||||
p.currentToken.WriteByte('"')
|
||||
default:
|
||||
p.parseError(fmt.Sprintf("invalid escape sequence '\\%c'", p.currentByte))
|
||||
return
|
||||
}
|
||||
escaped = false
|
||||
} else {
|
||||
switch p.currentByte {
|
||||
case '"':
|
||||
quoted = !quoted
|
||||
if !quoted {
|
||||
p.currentByte, p.err = p.buf.ReadByte()
|
||||
return
|
||||
}
|
||||
case '\n':
|
||||
p.parseError(fmt.Sprintf("label name %q contains unescaped new-line", p.currentToken.String()))
|
||||
return
|
||||
case '\\':
|
||||
escaped = true
|
||||
default:
|
||||
p.currentToken.WriteByte(p.currentByte)
|
||||
}
|
||||
}
|
||||
for {
|
||||
p.currentToken.WriteByte(p.currentByte)
|
||||
p.currentByte, p.err = p.buf.ReadByte()
|
||||
if !isValidLabelNameContinuation(p.currentByte, quoted) || (!quoted && p.currentByte == '=') {
|
||||
if p.err != nil || !isValidLabelNameContinuation(p.currentByte) {
|
||||
return
|
||||
}
|
||||
}
|
||||
@@ -779,7 +658,6 @@ func (p *TextParser) readTokenAsLabelValue() {
|
||||
p.currentToken.WriteByte('\n')
|
||||
default:
|
||||
p.parseError(fmt.Sprintf("invalid escape sequence '\\%c'", p.currentByte))
|
||||
p.currentLabelPairs = nil
|
||||
return
|
||||
}
|
||||
escaped = false
|
||||
@@ -838,19 +716,19 @@ func (p *TextParser) setOrCreateCurrentMF() {
|
||||
}
|
||||
|
||||
func isValidLabelNameStart(b byte) bool {
|
||||
return (b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z') || b == '_' || b == '"'
|
||||
return (b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z') || b == '_'
|
||||
}
|
||||
|
||||
func isValidLabelNameContinuation(b byte, quoted bool) bool {
|
||||
return isValidLabelNameStart(b) || (b >= '0' && b <= '9') || (quoted && utf8.ValidString(string(b)))
|
||||
func isValidLabelNameContinuation(b byte) bool {
|
||||
return isValidLabelNameStart(b) || (b >= '0' && b <= '9')
|
||||
}
|
||||
|
||||
func isValidMetricNameStart(b byte) bool {
|
||||
return isValidLabelNameStart(b) || b == ':'
|
||||
}
|
||||
|
||||
func isValidMetricNameContinuation(b byte, quoted bool) bool {
|
||||
return isValidLabelNameContinuation(b, quoted) || b == ':'
|
||||
func isValidMetricNameContinuation(b byte) bool {
|
||||
return isValidLabelNameContinuation(b) || b == ':'
|
||||
}
|
||||
|
||||
func isBlankOrTab(b byte) bool {
|
||||
@@ -895,7 +773,7 @@ func histogramMetricName(name string) string {
|
||||
|
||||
func parseFloat(s string) (float64, error) {
|
||||
if strings.ContainsAny(s, "pP_") {
|
||||
return 0, errors.New("unsupported character in float")
|
||||
return 0, fmt.Errorf("unsupported character in float")
|
||||
}
|
||||
return strconv.ParseFloat(s, 64)
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user