[chore] update otel libraries (#3740)

* chore: update otel dependencies

* refactor: combine tracing & metrics in observability package

* chore: update example tracing compose file

vendor/github.com/grpc-ecosystem/grpc-gateway/v2/runtime/convert.go

@@ -94,7 +94,7 @@ func Int64(val string) (int64, error) {
 }
 
 // Int64Slice converts 'val' where individual integers are separated by
-// 'sep' into a int64 slice.
+// 'sep' into an int64 slice.
 func Int64Slice(val, sep string) ([]int64, error) {
 	s := strings.Split(val, sep)
 	values := make([]int64, len(s))
@@ -118,7 +118,7 @@ func Int32(val string) (int32, error) {
 }
 
 // Int32Slice converts 'val' where individual integers are separated by
-// 'sep' into a int32 slice.
+// 'sep' into an int32 slice.
 func Int32Slice(val, sep string) ([]int32, error) {
 	s := strings.Split(val, sep)
 	values := make([]int32, len(s))
@@ -190,7 +190,7 @@ func Bytes(val string) ([]byte, error) {
 }
 
 // BytesSlice converts 'val' where individual bytes sequences, encoded in URL-safe
-// base64 without padding, are separated by 'sep' into a slice of bytes slices slice.
+// base64 without padding, are separated by 'sep' into a slice of byte slices.
 func BytesSlice(val, sep string) ([][]byte, error) {
 	s := strings.Split(val, sep)
 	values := make([][]byte, len(s))

vendor/github.com/grpc-ecosystem/grpc-gateway/v2/runtime/errors.go

@@ -81,6 +81,21 @@ func HTTPError(ctx context.Context, mux *ServeMux, marshaler Marshaler, w http.R
 	mux.errorHandler(ctx, mux, marshaler, w, r, err)
 }
 
+// HTTPStreamError uses the mux-configured stream error handler to notify error to the client without closing the connection.
+func HTTPStreamError(ctx context.Context, mux *ServeMux, marshaler Marshaler, w http.ResponseWriter, r *http.Request, err error) {
+	st := mux.streamErrorHandler(ctx, err)
+	msg := errorChunk(st)
+	buf, err := marshaler.Marshal(msg)
+	if err != nil {
+		grpclog.Errorf("Failed to marshal an error: %v", err)
+		return
+	}
+	if _, err := w.Write(buf); err != nil {
+		grpclog.Errorf("Failed to notify error to client: %v", err)
+		return
+	}
+}
+
 // DefaultHTTPErrorHandler is the default error handler.
 // If "err" is a gRPC Status, the function replies with the status code mapped by HTTPStatusFromCode.
 // If "err" is a HTTPStatusError, the function replies with the status code provide by that struct. This is

vendor/github.com/grpc-ecosystem/grpc-gateway/v2/runtime/fieldmask.go

@@ -155,7 +155,7 @@ func buildPathsBlindly(name string, in interface{}) []string {
 	return paths
 }
 
-// fieldMaskPathItem stores a in-progress deconstruction of a path for a fieldmask
+// fieldMaskPathItem stores an in-progress deconstruction of a path for a fieldmask
 type fieldMaskPathItem struct {
 	// the list of prior fields leading up to node connected by dots
 	path string

vendor/github.com/grpc-ecosystem/grpc-gateway/v2/runtime/handler.go

@@ -64,7 +64,13 @@ func ForwardResponseStream(ctx context.Context, mux *ServeMux, marshaler Marshal
 		}
 
 		if !wroteHeader {
-			w.Header().Set("Content-Type", marshaler.ContentType(respRw))
+			var contentType string
+			if sct, ok := marshaler.(StreamContentType); ok {
+				contentType = sct.StreamContentType(respRw)
+			} else {
+				contentType = marshaler.ContentType(respRw)
+			}
+			w.Header().Set("Content-Type", contentType)
 		}
 
 		var buf []byte
@@ -194,7 +200,7 @@ func ForwardResponseMessage(ctx context.Context, mux *ServeMux, marshaler Marsha
 		w.Header().Set("Content-Length", strconv.Itoa(len(buf)))
 	}
 
-	if _, err = w.Write(buf); err != nil {
+	if _, err = w.Write(buf); err != nil && !errors.Is(err, http.ErrBodyNotAllowed) {
 		grpclog.Errorf("Failed to write response: %v", err)
 	}
 

vendor/github.com/grpc-ecosystem/grpc-gateway/v2/runtime/marshaler.go

@@ -48,3 +48,11 @@ type Delimited interface {
 	// Delimiter returns the record separator for the stream.
 	Delimiter() []byte
 }
+
+// StreamContentType defines the streaming content type.
+type StreamContentType interface {
+	// StreamContentType returns the content type for a stream. This shares the
+	// same behaviour as for `Marshaler.ContentType`, but is called, if present,
+	// in the case of a streamed response.
+	StreamContentType(v interface{}) string
+}

vendor/github.com/grpc-ecosystem/grpc-gateway/v2/runtime/marshaler_registry.go

@@ -86,8 +86,8 @@ func (m marshalerRegistry) add(mime string, marshaler Marshaler) error {
 // It allows for a mapping of case-sensitive Content-Type MIME type string to runtime.Marshaler interfaces.
 //
 // For example, you could allow the client to specify the use of the runtime.JSONPb marshaler
-// with a "application/jsonpb" Content-Type and the use of the runtime.JSONBuiltin marshaler
-// with a "application/json" Content-Type.
+// with an "application/jsonpb" Content-Type and the use of the runtime.JSONBuiltin marshaler
+// with an "application/json" Content-Type.
 // "*" can be used to match any Content-Type.
 // This can be attached to a ServerMux with the marshaler option.
 func makeMarshalerMIMERegistry() marshalerRegistry {

vendor/github.com/grpc-ecosystem/grpc-gateway/v2/runtime/proto2_convert.go

@@ -40,7 +40,7 @@ func Float32P(val string) (*float32, error) {
 }
 
 // Int64P parses the given string representation of an integer
-// and returns a pointer to a int64 whose value is same as the parsed integer.
+// and returns a pointer to an int64 whose value is same as the parsed integer.
 func Int64P(val string) (*int64, error) {
 	i, err := Int64(val)
 	if err != nil {
@@ -50,7 +50,7 @@ func Int64P(val string) (*int64, error) {
 }
 
 // Int32P parses the given string representation of an integer
-// and returns a pointer to a int32 whose value is same as the parsed integer.
+// and returns a pointer to an int32 whose value is same as the parsed integer.
 func Int32P(val string) (*int32, error) {
 	i, err := Int32(val)
 	if err != nil {

vendor/github.com/grpc-ecosystem/grpc-gateway/v2/runtime/query.go

@@ -141,7 +141,7 @@ func populateFieldValueFromPath(msgValue protoreflect.Message, fieldPath []strin
 	}
 
 	// Check if oneof already set
-	if of := fieldDescriptor.ContainingOneof(); of != nil {
+	if of := fieldDescriptor.ContainingOneof(); of != nil && !of.IsSynthetic() {
 		if f := msgValue.WhichOneof(of); f != nil {
 			return fmt.Errorf("field already set for oneof %q", of.FullName().Name())
 		}
@@ -291,7 +291,11 @@ func parseMessage(msgDescriptor protoreflect.MessageDescriptor, value string) (p
 		if err != nil {
 			return protoreflect.Value{}, err
 		}
-		msg = timestamppb.New(t)
+		timestamp := timestamppb.New(t)
+		if ok := timestamp.IsValid(); !ok {
+			return protoreflect.Value{}, fmt.Errorf("%s before 0001-01-01", value)
+		}
+		msg = timestamp
 	case "google.protobuf.Duration":
 		d, err := time.ParseDuration(value)
 		if err != nil {

vendor/github.com/grpc-ecosystem/grpc-gateway/v2/utilities/pattern.go

@@ -1,6 +1,6 @@
 package utilities
 
-// An OpCode is a opcode of compiled path patterns.
+// OpCode is an opcode of compiled path patterns.
 type OpCode int
 
 // These constants are the valid values of OpCode.

vendor/github.com/grpc-ecosystem/grpc-gateway/v2/utilities/string_array_flag.go

@@ -5,7 +5,7 @@ import (
 	"strings"
 )
 
-// flagInterface is an cut down interface to `flag`
+// flagInterface is a cut down interface to `flag`
 type flagInterface interface {
 	Var(value flag.Value, name string, usage string)
 }

vendor/github.com/prometheus/common/expfmt/encode.go

@@ -68,7 +68,7 @@ func Negotiate(h http.Header) Format {
 		if escapeParam := ac.Params[model.EscapingKey]; escapeParam != "" {
 			switch Format(escapeParam) {
 			case model.AllowUTF8, model.EscapeUnderscores, model.EscapeDots, model.EscapeValues:
-				escapingScheme = Format(fmt.Sprintf("; escaping=%s", escapeParam))
+				escapingScheme = Format("; escaping=" + escapeParam)
 			default:
 				// If the escaping parameter is unknown, ignore it.
 			}
@@ -101,7 +101,7 @@ func NegotiateIncludingOpenMetrics(h http.Header) Format {
 		if escapeParam := ac.Params[model.EscapingKey]; escapeParam != "" {
 			switch Format(escapeParam) {
 			case model.AllowUTF8, model.EscapeUnderscores, model.EscapeDots, model.EscapeValues:
-				escapingScheme = Format(fmt.Sprintf("; escaping=%s", escapeParam))
+				escapingScheme = Format("; escaping=" + escapeParam)
 			default:
 				// If the escaping parameter is unknown, ignore it.
 			}

vendor/github.com/prometheus/common/expfmt/expfmt.go

@@ -15,7 +15,7 @@
 package expfmt
 
 import (
-	"fmt"
+	"errors"
 	"strings"
 
 	"github.com/prometheus/common/model"
@@ -109,7 +109,7 @@ func NewOpenMetricsFormat(version string) (Format, error) {
 	if version == OpenMetricsVersion_1_0_0 {
 		return FmtOpenMetrics_1_0_0, nil
 	}
-	return FmtUnknown, fmt.Errorf("unknown open metrics version string")
+	return FmtUnknown, errors.New("unknown open metrics version string")
 }
 
 // WithEscapingScheme returns a copy of Format with the specified escaping

vendor/github.com/prometheus/common/expfmt/openmetrics_create.go

@@ -152,8 +152,8 @@ func MetricFamilyToOpenMetrics(out io.Writer, in *dto.MetricFamily, options ...E
 	if metricType == dto.MetricType_COUNTER && strings.HasSuffix(compliantName, "_total") {
 		compliantName = name[:len(name)-6]
 	}
-	if toOM.withUnit && in.Unit != nil && !strings.HasSuffix(compliantName, fmt.Sprintf("_%s", *in.Unit)) {
-		compliantName = compliantName + fmt.Sprintf("_%s", *in.Unit)
+	if toOM.withUnit && in.Unit != nil && !strings.HasSuffix(compliantName, "_"+*in.Unit) {
+		compliantName = compliantName + "_" + *in.Unit
 	}
 
 	// Comments, first HELP, then TYPE.

vendor/github.com/prometheus/common/expfmt/text_parse.go

@@ -895,7 +895,7 @@ func histogramMetricName(name string) string {
 
 func parseFloat(s string) (float64, error) {
 	if strings.ContainsAny(s, "pP_") {
-		return 0, fmt.Errorf("unsupported character in float")
+		return 0, errors.New("unsupported character in float")
 	}
 	return strconv.ParseFloat(s, 64)
 }

vendor/github.com/prometheus/common/model/alert.go

@@ -14,6 +14,7 @@
 package model
 
 import (
+	"errors"
 	"fmt"
 	"time"
 )
@@ -89,16 +90,16 @@ func (a *Alert) StatusAt(ts time.Time) AlertStatus {
 // Validate checks whether the alert data is inconsistent.
 func (a *Alert) Validate() error {
 	if a.StartsAt.IsZero() {
-		return fmt.Errorf("start time missing")
+		return errors.New("start time missing")
 	}
 	if !a.EndsAt.IsZero() && a.EndsAt.Before(a.StartsAt) {
-		return fmt.Errorf("start time must be before end time")
+		return errors.New("start time must be before end time")
 	}
 	if err := a.Labels.Validate(); err != nil {
 		return fmt.Errorf("invalid label set: %w", err)
 	}
 	if len(a.Labels) == 0 {
-		return fmt.Errorf("at least one label pair required")
+		return errors.New("at least one label pair required")
 	}
 	if err := a.Annotations.Validate(); err != nil {
 		return fmt.Errorf("invalid annotations: %w", err)

vendor/github.com/prometheus/common/model/labelset_string.go

@@ -11,8 +11,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build go1.21
-
 package model
 
 import (

vendor/github.com/prometheus/common/model/labelset_string_go120.go

@@ -1,39 +0,0 @@
-// Copyright 2024 The Prometheus Authors
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-//go:build !go1.21
-
-package model
-
-import (
-	"fmt"
-	"sort"
-	"strings"
-)
-
-// String was optimized using functions not available for go 1.20
-// or lower. We keep the old implementation for compatibility with client_golang.
-// Once client golang drops support for go 1.20 (scheduled for August 2024), this
-// file can be removed.
-func (l LabelSet) String() string {
-	labelNames := make([]string, 0, len(l))
-	for name := range l {
-		labelNames = append(labelNames, string(name))
-	}
-	sort.Strings(labelNames)
-	lstrs := make([]string, 0, len(l))
-	for _, name := range labelNames {
-		lstrs = append(lstrs, fmt.Sprintf("%s=%q", name, l[LabelName(name)]))
-	}
-	return fmt.Sprintf("{%s}", strings.Join(lstrs, ", "))
-}

vendor/github.com/prometheus/common/model/metric.go

@@ -14,9 +14,11 @@
 package model
 
 import (
+	"errors"
 	"fmt"
 	"regexp"
 	"sort"
+	"strconv"
 	"strings"
 	"unicode/utf8"
 
@@ -269,10 +271,6 @@ func metricNeedsEscaping(m *dto.Metric) bool {
 	return false
 }
 
-const (
-	lowerhex = "0123456789abcdef"
-)
-
 // EscapeName escapes the incoming name according to the provided escaping
 // scheme. Depending on the rules of escaping, this may cause no change in the
 // string that is returned. (Especially NoEscaping, which by definition is a
@@ -307,7 +305,7 @@ func EscapeName(name string, scheme EscapingScheme) string {
 			} else if isValidLegacyRune(b, i) {
 				escaped.WriteRune(b)
 			} else {
-				escaped.WriteRune('_')
+				escaped.WriteString("__")
 			}
 		}
 		return escaped.String()
@@ -317,21 +315,15 @@ func EscapeName(name string, scheme EscapingScheme) string {
 		}
 		escaped.WriteString("U__")
 		for i, b := range name {
-			if isValidLegacyRune(b, i) {
+			if b == '_' {
+				escaped.WriteString("__")
+			} else if isValidLegacyRune(b, i) {
 				escaped.WriteRune(b)
 			} else if !utf8.ValidRune(b) {
 				escaped.WriteString("_FFFD_")
-			} else if b < 0x100 {
+			} else {
 				escaped.WriteRune('_')
-				for s := 4; s >= 0; s -= 4 {
-					escaped.WriteByte(lowerhex[b>>uint(s)&0xF])
-				}
-				escaped.WriteRune('_')
-			} else if b < 0x10000 {
-				escaped.WriteRune('_')
-				for s := 12; s >= 0; s -= 4 {
-					escaped.WriteByte(lowerhex[b>>uint(s)&0xF])
-				}
+				escaped.WriteString(strconv.FormatInt(int64(b), 16))
 				escaped.WriteRune('_')
 			}
 		}
@@ -389,8 +381,9 @@ func UnescapeName(name string, scheme EscapingScheme) string {
 			// We think we are in a UTF-8 code, process it.
 			var utf8Val uint
 			for j := 0; i < len(escapedName); j++ {
-				// This is too many characters for a utf8 value.
-				if j > 4 {
+				// This is too many characters for a utf8 value based on the MaxRune
+				// value of '\U0010FFFF'.
+				if j >= 6 {
 					return name
 				}
 				// Found a closing underscore, convert to a rune, check validity, and append.
@@ -443,7 +436,7 @@ func (e EscapingScheme) String() string {
 
 func ToEscapingScheme(s string) (EscapingScheme, error) {
 	if s == "" {
-		return NoEscaping, fmt.Errorf("got empty string instead of escaping scheme")
+		return NoEscaping, errors.New("got empty string instead of escaping scheme")
 	}
 	switch s {
 	case AllowUTF8:

vendor/github.com/prometheus/common/model/silence.go

@@ -15,6 +15,7 @@ package model
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"regexp"
 	"time"
@@ -34,7 +35,7 @@ func (m *Matcher) UnmarshalJSON(b []byte) error {
 	}
 
 	if len(m.Name) == 0 {
-		return fmt.Errorf("label name in matcher must not be empty")
+		return errors.New("label name in matcher must not be empty")
 	}
 	if m.IsRegex {
 		if _, err := regexp.Compile(m.Value); err != nil {
@@ -77,7 +78,7 @@ type Silence struct {
 // Validate returns true iff all fields of the silence have valid values.
 func (s *Silence) Validate() error {
 	if len(s.Matchers) == 0 {
-		return fmt.Errorf("at least one matcher required")
+		return errors.New("at least one matcher required")
 	}
 	for _, m := range s.Matchers {
 		if err := m.Validate(); err != nil {
@@ -85,22 +86,22 @@ func (s *Silence) Validate() error {
 		}
 	}
 	if s.StartsAt.IsZero() {
-		return fmt.Errorf("start time missing")
+		return errors.New("start time missing")
 	}
 	if s.EndsAt.IsZero() {
-		return fmt.Errorf("end time missing")
+		return errors.New("end time missing")
 	}
 	if s.EndsAt.Before(s.StartsAt) {
-		return fmt.Errorf("start time must be before end time")
+		return errors.New("start time must be before end time")
 	}
 	if s.CreatedBy == "" {
-		return fmt.Errorf("creator information missing")
+		return errors.New("creator information missing")
 	}
 	if s.Comment == "" {
-		return fmt.Errorf("comment missing")
+		return errors.New("comment missing")
 	}
 	if s.CreatedAt.IsZero() {
-		return fmt.Errorf("creation timestamp missing")
+		return errors.New("creation timestamp missing")
 	}
 	return nil
 }

vendor/github.com/prometheus/common/model/value_float.go

@@ -15,6 +15,7 @@ package model
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"math"
 	"strconv"
@@ -39,7 +40,7 @@ func (v SampleValue) MarshalJSON() ([]byte, error) {
 // UnmarshalJSON implements json.Unmarshaler.
 func (v *SampleValue) UnmarshalJSON(b []byte) error {
 	if len(b) < 2 || b[0] != '"' || b[len(b)-1] != '"' {
-		return fmt.Errorf("sample value must be a quoted string")
+		return errors.New("sample value must be a quoted string")
 	}
 	f, err := strconv.ParseFloat(string(b[1:len(b)-1]), 64)
 	if err != nil {

vendor/github.com/prometheus/common/model/value_histogram.go

@@ -15,6 +15,7 @@ package model
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"strconv"
 	"strings"
@@ -32,7 +33,7 @@ func (v FloatString) MarshalJSON() ([]byte, error) {
 
 func (v *FloatString) UnmarshalJSON(b []byte) error {
 	if len(b) < 2 || b[0] != '"' || b[len(b)-1] != '"' {
-		return fmt.Errorf("float value must be a quoted string")
+		return errors.New("float value must be a quoted string")
 	}
 	f, err := strconv.ParseFloat(string(b[1:len(b)-1]), 64)
 	if err != nil {
@@ -141,7 +142,7 @@ type SampleHistogramPair struct {
 
 func (s SampleHistogramPair) MarshalJSON() ([]byte, error) {
 	if s.Histogram == nil {
-		return nil, fmt.Errorf("histogram is nil")
+		return nil, errors.New("histogram is nil")
 	}
 	t, err := json.Marshal(s.Timestamp)
 	if err != nil {
@@ -164,7 +165,7 @@ func (s *SampleHistogramPair) UnmarshalJSON(buf []byte) error {
 		return fmt.Errorf("wrong number of fields: %d != %d", gotLen, wantLen)
 	}
 	if s.Histogram == nil {
-		return fmt.Errorf("histogram is null")
+		return errors.New("histogram is null")
 	}
 	return nil
 }