diff --git a/go.mod b/go.mod index 04052ebb..0ec9c534 100644 --- a/go.mod +++ b/go.mod @@ -4,9 +4,9 @@ go 1.23 require ( github.com/beevik/ntp v1.4.3 - github.com/prometheus/client_golang v1.20.1 + github.com/prometheus/client_golang v1.20.2 github.com/sapcc/go-api-declarations v1.12.4 - github.com/sapcc/go-bits v0.0.0-20240822124354-41dc601581db + github.com/sapcc/go-bits v0.0.0-20240829073103-7495f31d66ad go.uber.org/automaxprocs v1.5.3 ) @@ -16,9 +16,9 @@ require ( github.com/klauspost/compress v1.17.9 // indirect github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect github.com/prometheus/client_model v0.6.1 // indirect - github.com/prometheus/common v0.55.0 // indirect + github.com/prometheus/common v0.57.0 // indirect github.com/prometheus/procfs v0.15.1 // indirect - golang.org/x/net v0.26.0 // indirect + golang.org/x/net v0.27.0 // indirect golang.org/x/sys v0.24.0 // indirect google.golang.org/protobuf v1.34.2 // indirect ) diff --git a/go.sum b/go.sum index b8d2a59d..6d410647 100644 --- a/go.sum +++ b/go.sum @@ -18,26 +18,26 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= github.com/prashantv/gostub v1.1.0 h1:BTyx3RfQjRHnUWaGF9oQos79AlQ5k8WNktv7VGvVH4g= github.com/prashantv/gostub v1.1.0/go.mod h1:A5zLQHz7ieHGG7is6LLXLz7I8+3LZzsrV0P1IAHhP5U= -github.com/prometheus/client_golang v1.20.1 h1:IMJXHOD6eARkQpxo8KkhgEVFlBNm+nkrFUyGlIu7Na8= -github.com/prometheus/client_golang v1.20.1/go.mod h1:PIEt8X02hGcP8JWbeHyeZ53Y/jReSnHgO035n//V5WE= +github.com/prometheus/client_golang v1.20.2 h1:5ctymQzZlyOON1666svgwn3s6IKWgfbjsejTMiXIyjg= +github.com/prometheus/client_golang v1.20.2/go.mod h1:PIEt8X02hGcP8JWbeHyeZ53Y/jReSnHgO035n//V5WE= github.com/prometheus/client_model v0.6.1 h1:ZKSh/rekM+n3CeS952MLRAdFwIKqeY8b62p8ais2e9E= github.com/prometheus/client_model v0.6.1/go.mod h1:OrxVMOVHjw3lKMa8+x6HeMGkHMQyHDk9E3jmP2AmGiY= -github.com/prometheus/common v0.55.0 h1:KEi6DK7lXW/m7Ig5i47x0vRzuBsHuvJdi5ee6Y3G1dc= -github.com/prometheus/common v0.55.0/go.mod h1:2SECS4xJG1kd8XF9IcM1gMX6510RAEL65zxzNImwdc8= +github.com/prometheus/common v0.57.0 h1:Ro/rKjwdq9mZn1K5QPctzh+MA4Lp0BuYk5ZZEVhoNcY= +github.com/prometheus/common v0.57.0/go.mod h1:7uRPFSUTbfZWsJ7MHY56sqt7hLQu3bxXHDnNhl8E9qI= github.com/prometheus/procfs v0.15.1 h1:YagwOFzUgYfKKHX6Dr+sHT7km/hxC76UB0learggepc= github.com/prometheus/procfs v0.15.1/go.mod h1:fB45yRUv8NstnjriLhBQLuOUt+WW4BsoGhij/e3PBqk= github.com/sapcc/go-api-declarations v1.12.4 h1:TPYwcrs1zBmwEZEOCCwTgZrS6HKUFJMf86oqANc22wo= github.com/sapcc/go-api-declarations v1.12.4/go.mod h1:83R3hTANhuRXt/pXDby37IJetw8l7DG41s33Tp9NXxI= -github.com/sapcc/go-bits v0.0.0-20240822124354-41dc601581db h1:SVRZ0S5zWQWgwSKgCVwmtRhWO55KgXSyTRB71+yUzdE= -github.com/sapcc/go-bits v0.0.0-20240822124354-41dc601581db/go.mod h1:8yHEStM8Pw03CuVriCZ3drboIoo0RyP2U6YgvRjxySE= +github.com/sapcc/go-bits v0.0.0-20240829073103-7495f31d66ad h1:Jau1UyHxB3+SzlgGQl8OcWHEQ0iFHoWCrMbjraES4M4= +github.com/sapcc/go-bits v0.0.0-20240829073103-7495f31d66ad/go.mod h1:O/QfcQtqIl95QUAt6dRtc9oSxshwfjlFJVADt0j6Kiw= github.com/sergi/go-diff v1.3.1 h1:xkr+Oxo4BOQKmkn/B9eMK0g5Kg/983T9DqqPHwYqD+8= github.com/sergi/go-diff v1.3.1/go.mod h1:aMJSSKb2lpPvRNec0+w3fl7LP9IOFzdc9Pa4NFbPK1I= github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg= github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY= go.uber.org/automaxprocs v1.5.3 h1:kWazyxZUrS3Gs4qUpbwo5kEIMGe/DAvi5Z4tl2NW4j8= go.uber.org/automaxprocs v1.5.3/go.mod h1:eRbA25aqJrxAbsLO0xy5jVwPt7FQnRgjW+efnwa1WM0= -golang.org/x/net v0.26.0 h1:soB7SVo0PWrY4vPW/+ay0jKDNScG2X9wFeYlXIvJsOQ= -golang.org/x/net v0.26.0/go.mod h1:5YKkiSynbBIh3p6iOc/vibscux0x38BZDkn8sCUPxHE= +golang.org/x/net v0.27.0 h1:5K3Njcw06/l2y9vpGCSdcxWOYHOUk3dVNGDXN+FvAys= +golang.org/x/net v0.27.0/go.mod h1:dDi0PyhWNoiUOrAS8uXv/vnScO4wnHQO4mj9fn/RytE= golang.org/x/sys v0.24.0 h1:Twjiwq9dn6R1fQcyiK+wQyHWfaz/BJB+YIpzU/Cv3Xg= golang.org/x/sys v0.24.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA= google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6hg= diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go index 2e0b9a86..e598e66e 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go @@ -203,8 +203,10 @@ func HandlerForTransactional(reg prometheus.TransactionalGatherer, opts HandlerO defer closeWriter() - rsp.Header().Set(contentEncodingHeader, encodingHeader) - + // Set Content-Encoding only when data is compressed + if encodingHeader != string(Identity) { + rsp.Header().Set(contentEncodingHeader, encodingHeader) + } enc := expfmt.NewEncoder(w, contentType) // handleError handles the error according to opts.ErrorHandling diff --git a/vendor/github.com/prometheus/common/expfmt/decode.go b/vendor/github.com/prometheus/common/expfmt/decode.go index 25cfaa21..1448439b 100644 --- a/vendor/github.com/prometheus/common/expfmt/decode.go +++ b/vendor/github.com/prometheus/common/expfmt/decode.go @@ -45,7 +45,7 @@ func ResponseFormat(h http.Header) Format { mediatype, params, err := mime.ParseMediaType(ct) if err != nil { - return fmtUnknown + return FmtUnknown } const textType = "text/plain" @@ -53,21 +53,21 @@ func ResponseFormat(h http.Header) Format { switch mediatype { case ProtoType: if p, ok := params["proto"]; ok && p != ProtoProtocol { - return fmtUnknown + return FmtUnknown } if e, ok := params["encoding"]; ok && e != "delimited" { - return fmtUnknown + return FmtUnknown } - return fmtProtoDelim + return FmtProtoDelim case textType: if v, ok := params["version"]; ok && v != TextVersion { - return fmtUnknown + return FmtUnknown } - return fmtText + return FmtText } - return fmtUnknown + return FmtUnknown } // NewDecoder returns a new decoder based on the given input format. diff --git a/vendor/github.com/prometheus/common/expfmt/encode.go b/vendor/github.com/prometheus/common/expfmt/encode.go index ff5ef7a9..cf0c150c 100644 --- a/vendor/github.com/prometheus/common/expfmt/encode.go +++ b/vendor/github.com/prometheus/common/expfmt/encode.go @@ -77,18 +77,18 @@ func Negotiate(h http.Header) Format { if ac.Type+"/"+ac.SubType == ProtoType && ac.Params["proto"] == ProtoProtocol { switch ac.Params["encoding"] { case "delimited": - return fmtProtoDelim + escapingScheme + return FmtProtoDelim + escapingScheme case "text": - return fmtProtoText + escapingScheme + return FmtProtoText + escapingScheme case "compact-text": - return fmtProtoCompact + escapingScheme + return FmtProtoCompact + escapingScheme } } if ac.Type == "text" && ac.SubType == "plain" && (ver == TextVersion || ver == "") { - return fmtText + escapingScheme + return FmtText + escapingScheme } } - return fmtText + escapingScheme + return FmtText + escapingScheme } // NegotiateIncludingOpenMetrics works like Negotiate but includes @@ -110,26 +110,26 @@ func NegotiateIncludingOpenMetrics(h http.Header) Format { if ac.Type+"/"+ac.SubType == ProtoType && ac.Params["proto"] == ProtoProtocol { switch ac.Params["encoding"] { case "delimited": - return fmtProtoDelim + escapingScheme + return FmtProtoDelim + escapingScheme case "text": - return fmtProtoText + escapingScheme + return FmtProtoText + escapingScheme case "compact-text": - return fmtProtoCompact + escapingScheme + return FmtProtoCompact + escapingScheme } } if ac.Type == "text" && ac.SubType == "plain" && (ver == TextVersion || ver == "") { - return fmtText + escapingScheme + return FmtText + escapingScheme } if ac.Type+"/"+ac.SubType == OpenMetricsType && (ver == OpenMetricsVersion_0_0_1 || ver == OpenMetricsVersion_1_0_0 || ver == "") { switch ver { case OpenMetricsVersion_1_0_0: - return fmtOpenMetrics_1_0_0 + escapingScheme + return FmtOpenMetrics_1_0_0 + escapingScheme default: - return fmtOpenMetrics_0_0_1 + escapingScheme + return FmtOpenMetrics_0_0_1 + escapingScheme } } } - return fmtText + escapingScheme + return FmtText + escapingScheme } // NewEncoder returns a new encoder based on content type negotiation. All diff --git a/vendor/github.com/prometheus/common/expfmt/expfmt.go b/vendor/github.com/prometheus/common/expfmt/expfmt.go index 051b38cd..14034a67 100644 --- a/vendor/github.com/prometheus/common/expfmt/expfmt.go +++ b/vendor/github.com/prometheus/common/expfmt/expfmt.go @@ -32,24 +32,31 @@ type Format string // it on the wire, new content-type strings will have to be agreed upon and // added here. const ( - TextVersion = "0.0.4" - ProtoType = `application/vnd.google.protobuf` - ProtoProtocol = `io.prometheus.client.MetricFamily` - protoFmt = ProtoType + "; proto=" + ProtoProtocol + ";" + TextVersion = "0.0.4" + ProtoType = `application/vnd.google.protobuf` + ProtoProtocol = `io.prometheus.client.MetricFamily` + // Deprecated: Use expfmt.NewFormat(expfmt.TypeProtoCompact) instead. + ProtoFmt = ProtoType + "; proto=" + ProtoProtocol + ";" OpenMetricsType = `application/openmetrics-text` OpenMetricsVersion_0_0_1 = "0.0.1" OpenMetricsVersion_1_0_0 = "1.0.0" - // The Content-Type values for the different wire protocols. Note that these - // values are now unexported. If code was relying on comparisons to these - // constants, instead use FormatType(). - fmtUnknown Format = `` - fmtText Format = `text/plain; version=` + TextVersion + `; charset=utf-8` - fmtProtoDelim Format = protoFmt + ` encoding=delimited` - fmtProtoText Format = protoFmt + ` encoding=text` - fmtProtoCompact Format = protoFmt + ` encoding=compact-text` - fmtOpenMetrics_1_0_0 Format = OpenMetricsType + `; version=` + OpenMetricsVersion_1_0_0 + `; charset=utf-8` - fmtOpenMetrics_0_0_1 Format = OpenMetricsType + `; version=` + OpenMetricsVersion_0_0_1 + `; charset=utf-8` + // The Content-Type values for the different wire protocols. Do not do direct + // comparisons to these constants, instead use the comparison functions. + // Deprecated: Use expfmt.NewFormat(expfmt.TypeUnknown) instead. + FmtUnknown Format = `` + // Deprecated: Use expfmt.NewFormat(expfmt.TypeTextPlain) instead. + FmtText Format = `text/plain; version=` + TextVersion + `; charset=utf-8` + // Deprecated: Use expfmt.NewFormat(expfmt.TypeProtoDelim) instead. + FmtProtoDelim Format = ProtoFmt + ` encoding=delimited` + // Deprecated: Use expfmt.NewFormat(expfmt.TypeProtoText) instead. + FmtProtoText Format = ProtoFmt + ` encoding=text` + // Deprecated: Use expfmt.NewFormat(expfmt.TypeProtoCompact) instead. + FmtProtoCompact Format = ProtoFmt + ` encoding=compact-text` + // Deprecated: Use expfmt.NewFormat(expfmt.TypeOpenMetrics) instead. + FmtOpenMetrics_1_0_0 Format = OpenMetricsType + `; version=` + OpenMetricsVersion_1_0_0 + `; charset=utf-8` + // Deprecated: Use expfmt.NewFormat(expfmt.TypeOpenMetrics) instead. + FmtOpenMetrics_0_0_1 Format = OpenMetricsType + `; version=` + OpenMetricsVersion_0_0_1 + `; charset=utf-8` ) const ( @@ -79,17 +86,17 @@ const ( func NewFormat(t FormatType) Format { switch t { case TypeProtoCompact: - return fmtProtoCompact + return FmtProtoCompact case TypeProtoDelim: - return fmtProtoDelim + return FmtProtoDelim case TypeProtoText: - return fmtProtoText + return FmtProtoText case TypeTextPlain: - return fmtText + return FmtText case TypeOpenMetrics: - return fmtOpenMetrics_1_0_0 + return FmtOpenMetrics_1_0_0 default: - return fmtUnknown + return FmtUnknown } } @@ -97,12 +104,12 @@ func NewFormat(t FormatType) Format { // specified version number. func NewOpenMetricsFormat(version string) (Format, error) { if version == OpenMetricsVersion_0_0_1 { - return fmtOpenMetrics_0_0_1, nil + return FmtOpenMetrics_0_0_1, nil } if version == OpenMetricsVersion_1_0_0 { - return fmtOpenMetrics_1_0_0, nil + return FmtOpenMetrics_1_0_0, nil } - return fmtUnknown, fmt.Errorf("unknown open metrics version string") + return FmtUnknown, fmt.Errorf("unknown open metrics version string") } // FormatType deduces an overall FormatType for the given format. diff --git a/vendor/github.com/prometheus/common/expfmt/openmetrics_create.go b/vendor/github.com/prometheus/common/expfmt/openmetrics_create.go index 353c5e93..11c8ff4b 100644 --- a/vendor/github.com/prometheus/common/expfmt/openmetrics_create.go +++ b/vendor/github.com/prometheus/common/expfmt/openmetrics_create.go @@ -477,7 +477,7 @@ func writeOpenMetricsNameAndLabelPairs( if name != "" { // If the name does not pass the legacy validity check, we must put the // metric name inside the braces, quoted. - if !model.IsValidLegacyMetricName(model.LabelValue(name)) { + if !model.IsValidLegacyMetricName(name) { metricInsideBraces = true err := w.WriteByte(separator) written++ diff --git a/vendor/github.com/prometheus/common/expfmt/text_create.go b/vendor/github.com/prometheus/common/expfmt/text_create.go index f9b8265a..4b86434b 100644 --- a/vendor/github.com/prometheus/common/expfmt/text_create.go +++ b/vendor/github.com/prometheus/common/expfmt/text_create.go @@ -354,7 +354,7 @@ func writeNameAndLabelPairs( if name != "" { // If the name does not pass the legacy validity check, we must put the // metric name inside the braces. - if !model.IsValidLegacyMetricName(model.LabelValue(name)) { + if !model.IsValidLegacyMetricName(name) { metricInsideBraces = true err := w.WriteByte(separator) written++ @@ -498,7 +498,7 @@ func writeInt(w enhancedWriter, i int64) (int, error) { // writeName writes a string as-is if it complies with the legacy naming // scheme, or escapes it in double quotes if not. func writeName(w enhancedWriter, name string) (int, error) { - if model.IsValidLegacyMetricName(model.LabelValue(name)) { + if model.IsValidLegacyMetricName(name) { return w.WriteString(name) } var written int diff --git a/vendor/github.com/prometheus/common/expfmt/text_parse.go b/vendor/github.com/prometheus/common/expfmt/text_parse.go index 26490211..25db4f21 100644 --- a/vendor/github.com/prometheus/common/expfmt/text_parse.go +++ b/vendor/github.com/prometheus/common/expfmt/text_parse.go @@ -22,9 +22,9 @@ import ( "math" "strconv" "strings" + "unicode/utf8" dto "github.com/prometheus/client_model/go" - "google.golang.org/protobuf/proto" "github.com/prometheus/common/model" @@ -60,6 +60,7 @@ 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' @@ -74,6 +75,7 @@ type TextParser struct { // count and sum of that summary/histogram. currentIsSummaryCount, currentIsSummarySum bool currentIsHistogramCount, currentIsHistogramSum bool + currentMetricIsInsideBraces bool } // TextToMetricFamilies reads 'in' as the simple and flat text-based exchange @@ -137,12 +139,14 @@ 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 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. @@ -158,6 +162,9 @@ 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 } @@ -275,6 +282,8 @@ 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. } @@ -287,6 +296,38 @@ 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.currentMF != nil && p.currentMF.GetName() != p.currentToken.String() { + p.parseError(fmt.Sprintf("multiple metric names %s %s", p.currentMF.GetName(), p.currentToken.String())) + return nil + } + switch p.currentByte { + case ',': + p.setOrCreateCurrentMF() + p.currentMetric = &dto.Metric{} + return p.startLabelName + case '}': + p.setOrCreateCurrentMF() + 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)) @@ -296,23 +337,17 @@ 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.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 + p.currentLabelPairs = append(p.currentLabelPairs, p.currentLabelPair) } // Check for duplicate label names. labels := make(map[string]struct{}) - for _, l := range p.currentMetric.Label { + for _, l := range p.currentLabelPairs { 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 } } @@ -345,6 +380,7 @@ 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 { @@ -371,12 +407,19 @@ 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 } } @@ -585,6 +628,8 @@ 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 @@ -610,13 +655,45 @@ 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.currentToken.WriteByte(p.currentByte) + 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) + } + } p.currentByte, p.err = p.buf.ReadByte() - if p.err != nil || !isValidMetricNameContinuation(p.currentByte) { + if !isValidMetricNameContinuation(p.currentByte, quoted) || (!quoted && p.currentByte == ' ') { return } } @@ -628,13 +705,45 @@ 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.currentToken.WriteByte(p.currentByte) + 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) + } + } p.currentByte, p.err = p.buf.ReadByte() - if p.err != nil || !isValidLabelNameContinuation(p.currentByte) { + if !isValidLabelNameContinuation(p.currentByte, quoted) || (!quoted && p.currentByte == '=') { return } } @@ -660,6 +769,7 @@ 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 @@ -718,19 +828,19 @@ func (p *TextParser) setOrCreateCurrentMF() { } func isValidLabelNameStart(b byte) bool { - return (b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z') || b == '_' + return (b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z') || b == '_' || b == '"' } -func isValidLabelNameContinuation(b byte) bool { - return isValidLabelNameStart(b) || (b >= '0' && b <= '9') +func isValidLabelNameContinuation(b byte, quoted bool) bool { + return isValidLabelNameStart(b) || (b >= '0' && b <= '9') || (quoted && utf8.ValidString(string(b))) } func isValidMetricNameStart(b byte) bool { return isValidLabelNameStart(b) || b == ':' } -func isValidMetricNameContinuation(b byte) bool { - return isValidLabelNameContinuation(b) || b == ':' +func isValidMetricNameContinuation(b byte, quoted bool) bool { + return isValidLabelNameContinuation(b, quoted) || b == ':' } func isBlankOrTab(b byte) bool { diff --git a/vendor/github.com/prometheus/common/model/labels.go b/vendor/github.com/prometheus/common/model/labels.go index 3317ce22..73b7aa3e 100644 --- a/vendor/github.com/prometheus/common/model/labels.go +++ b/vendor/github.com/prometheus/common/model/labels.go @@ -97,26 +97,35 @@ var LabelNameRE = regexp.MustCompile("^[a-zA-Z_][a-zA-Z0-9_]*$") // therewith. type LabelName string -// IsValid returns true iff name matches the pattern of LabelNameRE for legacy -// names, and iff it's valid UTF-8 if NameValidationScheme is set to -// UTF8Validation. For the legacy matching, it does not use LabelNameRE for the -// check but a much faster hardcoded implementation. +// IsValid returns true iff the name matches the pattern of LabelNameRE when +// NameValidationScheme is set to LegacyValidation, or valid UTF-8 if +// NameValidationScheme is set to UTF8Validation. func (ln LabelName) IsValid() bool { if len(ln) == 0 { return false } switch NameValidationScheme { case LegacyValidation: - for i, b := range ln { - if !((b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z') || b == '_' || (b >= '0' && b <= '9' && i > 0)) { - return false - } - } + return ln.IsValidLegacy() case UTF8Validation: return utf8.ValidString(string(ln)) default: panic(fmt.Sprintf("Invalid name validation scheme requested: %d", NameValidationScheme)) } +} + +// IsValidLegacy returns true iff name matches the pattern of LabelNameRE for +// legacy names. It does not use LabelNameRE for the check but a much faster +// hardcoded implementation. +func (ln LabelName) IsValidLegacy() bool { + if len(ln) == 0 { + return false + } + for i, b := range ln { + if !((b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z') || b == '_' || (b >= '0' && b <= '9' && i > 0)) { + return false + } + } return true } diff --git a/vendor/github.com/prometheus/common/model/metric.go b/vendor/github.com/prometheus/common/model/metric.go index eb865e5a..c44f93f3 100644 --- a/vendor/github.com/prometheus/common/model/metric.go +++ b/vendor/github.com/prometheus/common/model/metric.go @@ -161,7 +161,7 @@ func (m Metric) FastFingerprint() Fingerprint { func IsValidMetricName(n LabelValue) bool { switch NameValidationScheme { case LegacyValidation: - return IsValidLegacyMetricName(n) + return IsValidLegacyMetricName(string(n)) case UTF8Validation: if len(n) == 0 { return false @@ -176,7 +176,7 @@ func IsValidMetricName(n LabelValue) bool { // legacy validation scheme regardless of the value of NameValidationScheme. // This function, however, does not use MetricNameRE for the check but a much // faster hardcoded implementation. -func IsValidLegacyMetricName(n LabelValue) bool { +func IsValidLegacyMetricName(n string) bool { if len(n) == 0 { return false } @@ -208,7 +208,7 @@ func EscapeMetricFamily(v *dto.MetricFamily, scheme EscapingScheme) *dto.MetricF } // If the name is nil, copy as-is, don't try to escape. - if v.Name == nil || IsValidLegacyMetricName(LabelValue(v.GetName())) { + if v.Name == nil || IsValidLegacyMetricName(v.GetName()) { out.Name = v.Name } else { out.Name = proto.String(EscapeName(v.GetName(), scheme)) @@ -230,7 +230,7 @@ func EscapeMetricFamily(v *dto.MetricFamily, scheme EscapingScheme) *dto.MetricF for _, l := range m.Label { if l.GetName() == MetricNameLabel { - if l.Value == nil || IsValidLegacyMetricName(LabelValue(l.GetValue())) { + if l.Value == nil || IsValidLegacyMetricName(l.GetValue()) { escaped.Label = append(escaped.Label, l) continue } @@ -240,7 +240,7 @@ func EscapeMetricFamily(v *dto.MetricFamily, scheme EscapingScheme) *dto.MetricF }) continue } - if l.Name == nil || IsValidLegacyMetricName(LabelValue(l.GetName())) { + if l.Name == nil || IsValidLegacyMetricName(l.GetName()) { escaped.Label = append(escaped.Label, l) continue } @@ -256,10 +256,10 @@ func EscapeMetricFamily(v *dto.MetricFamily, scheme EscapingScheme) *dto.MetricF func metricNeedsEscaping(m *dto.Metric) bool { for _, l := range m.Label { - if l.GetName() == MetricNameLabel && !IsValidLegacyMetricName(LabelValue(l.GetValue())) { + if l.GetName() == MetricNameLabel && !IsValidLegacyMetricName(l.GetValue()) { return true } - if !IsValidLegacyMetricName(LabelValue(l.GetName())) { + if !IsValidLegacyMetricName(l.GetName()) { return true } } @@ -283,7 +283,7 @@ func EscapeName(name string, scheme EscapingScheme) string { case NoEscaping: return name case UnderscoreEscaping: - if IsValidLegacyMetricName(LabelValue(name)) { + if IsValidLegacyMetricName(name) { return name } for i, b := range name { @@ -309,7 +309,7 @@ func EscapeName(name string, scheme EscapingScheme) string { } return escaped.String() case ValueEncodingEscaping: - if IsValidLegacyMetricName(LabelValue(name)) { + if IsValidLegacyMetricName(name) { return name } escaped.WriteString("U__") @@ -452,6 +452,6 @@ func ToEscapingScheme(s string) (EscapingScheme, error) { case EscapeValues: return ValueEncodingEscaping, nil default: - return NoEscaping, fmt.Errorf("unknown format scheme " + s) + return NoEscaping, fmt.Errorf("unknown format scheme %s", s) } } diff --git a/vendor/modules.txt b/vendor/modules.txt index 771284ad..598e35b6 100644 --- a/vendor/modules.txt +++ b/vendor/modules.txt @@ -19,7 +19,7 @@ github.com/klauspost/compress/zstd/internal/xxhash # github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 ## explicit github.com/munnerz/goautoneg -# github.com/prometheus/client_golang v1.20.1 +# github.com/prometheus/client_golang v1.20.2 ## explicit; go 1.20 github.com/prometheus/client_golang/internal/github.com/golang/gddo/httputil github.com/prometheus/client_golang/internal/github.com/golang/gddo/httputil/header @@ -29,7 +29,7 @@ github.com/prometheus/client_golang/prometheus/promhttp # github.com/prometheus/client_model v0.6.1 ## explicit; go 1.19 github.com/prometheus/client_model/go -# github.com/prometheus/common v0.55.0 +# github.com/prometheus/common v0.57.0 ## explicit; go 1.20 github.com/prometheus/common/expfmt github.com/prometheus/common/model @@ -41,7 +41,7 @@ github.com/prometheus/procfs/internal/util # github.com/sapcc/go-api-declarations v1.12.4 ## explicit; go 1.21 github.com/sapcc/go-api-declarations/bininfo -# github.com/sapcc/go-bits v0.0.0-20240822124354-41dc601581db +# github.com/sapcc/go-bits v0.0.0-20240829073103-7495f31d66ad ## explicit; go 1.22 github.com/sapcc/go-bits/httpext github.com/sapcc/go-bits/logg @@ -52,7 +52,7 @@ go.uber.org/automaxprocs go.uber.org/automaxprocs/internal/cgroups go.uber.org/automaxprocs/internal/runtime go.uber.org/automaxprocs/maxprocs -# golang.org/x/net v0.26.0 +# golang.org/x/net v0.27.0 ## explicit; go 1.18 golang.org/x/net/bpf golang.org/x/net/internal/iana