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mirror of https://github.com/open-telemetry/opentelemetry-go.git synced 2025-08-10 22:31:50 +02:00

Add an auto-instrumentable no-op implementation to the trace package (#6203)

This copes the `go.opentelemetry.io/auto/sdk` package into the
`go.opentelemetry.io/otel/trace` package. This is done to avoid package
import cycles and still provide an auto-instrumentable SDK (see
https://github.com/open-telemetry/opentelemetry-go-instrumentation/issues/974).

## Overview of changes

The code copied is updated with the following changes. The over-all goal
is to ensure none of this is exported and follows the `auto/sdk` as
close as possible to help maintenance.

### `trace/auto.go`

Consolidation of the following into a single file:

-
aea085dd2a/sdk/tracer_provider.go
-
aea085dd2a/sdk/tracer.go
-
aea085dd2a/sdk/span.go
-
aea085dd2a/sdk/limit.go

Has the following changes:

- `func TracerProvider()` renamed to `newAutoTracerProvider`
- `type tracerProvider struct` renamed to `autoTracerProvider`
- `type tracer struct` renamed to `autoTracer`
- `type span struct` renamed to `autoSpan`
- Lint issues addressed based on this repositories configuration (these
changes are being back-ported upstream)

### `trace/auto_test.go`

Consolidation of the following into a single file:

-
aea085dd2a/sdk/tracer_provider_test.go
-
aea085dd2a/sdk/tracer_test.go
-
aea085dd2a/sdk/span_test.go
-
aea085dd2a/sdk/limit_test.go

Has the following changes:

- Renames in `trace/auto.go` are applied here
- Lint issues addressed based on this repositories configuration (these
changes are being back-ported upstream)

### `trace/internal/telemetry`

Copied from
aea085dd2a/sdk/internal/telemetry

- Pacakge vanity URLs added
- Lint issues addressed based on this repositories configuration (these
changes are being back-ported upstream)
- Use of the package name has been updated

#### `trace/internal/telemetry/test`

Copied from
aea085dd2a/sdk/internal/telemetry/test

- Module name updated
- Documentation updated with new package name
- Testing values updated with new package name

---------

Co-authored-by: Ron Federman <73110295+RonFed@users.noreply.github.com>
This commit is contained in:
Tyler Yahn
2025-02-04 08:04:14 -08:00
committed by GitHub
parent fa5a782c57
commit 9aae208463
25 changed files with 4440 additions and 1 deletions

661
trace/auto.go Normal file
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@@ -0,0 +1,661 @@
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package trace // import "go.opentelemetry.io/otel/trace"
import (
"context"
"encoding/json"
"fmt"
"math"
"os"
"reflect"
"runtime"
"strconv"
"strings"
"sync"
"sync/atomic"
"time"
"unicode/utf8"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/codes"
semconv "go.opentelemetry.io/otel/semconv/v1.26.0"
"go.opentelemetry.io/otel/trace/embedded"
"go.opentelemetry.io/otel/trace/internal/telemetry"
)
// newAutoTracerProvider returns an auto-instrumentable [trace.TracerProvider].
// If an [go.opentelemetry.io/auto.Instrumentation] is configured to instrument
// the process using the returned TracerProvider, all of the telemetry it
// produces will be processed and handled by that Instrumentation. By default,
// if no Instrumentation instruments the TracerProvider it will not generate
// any trace telemetry.
func newAutoTracerProvider() TracerProvider { return tracerProviderInstance }
var tracerProviderInstance = new(autoTracerProvider)
type autoTracerProvider struct{ embedded.TracerProvider }
var _ TracerProvider = autoTracerProvider{}
func (p autoTracerProvider) Tracer(name string, opts ...TracerOption) Tracer {
cfg := NewTracerConfig(opts...)
return autoTracer{
name: name,
version: cfg.InstrumentationVersion(),
schemaURL: cfg.SchemaURL(),
}
}
type autoTracer struct {
embedded.Tracer
name, schemaURL, version string
}
var _ Tracer = autoTracer{}
func (t autoTracer) Start(ctx context.Context, name string, opts ...SpanStartOption) (context.Context, Span) {
var psc SpanContext
sampled := true
span := new(autoSpan)
// Ask eBPF for sampling decision and span context info.
t.start(ctx, span, &psc, &sampled, &span.spanContext)
span.sampled.Store(sampled)
ctx = ContextWithSpan(ctx, span)
if sampled {
// Only build traces if sampled.
cfg := NewSpanStartConfig(opts...)
span.traces, span.span = t.traces(name, cfg, span.spanContext, psc)
}
return ctx, span
}
// Expected to be implemented in eBPF.
//
//go:noinline
func (t *autoTracer) start(
ctx context.Context,
spanPtr *autoSpan,
psc *SpanContext,
sampled *bool,
sc *SpanContext,
) {
start(ctx, spanPtr, psc, sampled, sc)
}
// start is used for testing.
var start = func(context.Context, *autoSpan, *SpanContext, *bool, *SpanContext) {}
func (t autoTracer) traces(name string, cfg SpanConfig, sc, psc SpanContext) (*telemetry.Traces, *telemetry.Span) {
span := &telemetry.Span{
TraceID: telemetry.TraceID(sc.TraceID()),
SpanID: telemetry.SpanID(sc.SpanID()),
Flags: uint32(sc.TraceFlags()),
TraceState: sc.TraceState().String(),
ParentSpanID: telemetry.SpanID(psc.SpanID()),
Name: name,
Kind: spanKind(cfg.SpanKind()),
}
span.Attrs, span.DroppedAttrs = convCappedAttrs(maxSpan.Attrs, cfg.Attributes())
links := cfg.Links()
if limit := maxSpan.Links; limit == 0 {
n := int64(len(links))
if n > 0 {
span.DroppedLinks = uint32(min(n, math.MaxUint32)) // nolint: gosec // Bounds checked.
}
} else {
if limit > 0 {
n := int64(max(len(links)-limit, 0))
span.DroppedLinks = uint32(min(n, math.MaxUint32)) // nolint: gosec // Bounds checked.
links = links[n:]
}
span.Links = convLinks(links)
}
if t := cfg.Timestamp(); !t.IsZero() {
span.StartTime = cfg.Timestamp()
} else {
span.StartTime = time.Now()
}
return &telemetry.Traces{
ResourceSpans: []*telemetry.ResourceSpans{
{
ScopeSpans: []*telemetry.ScopeSpans{
{
Scope: &telemetry.Scope{
Name: t.name,
Version: t.version,
},
Spans: []*telemetry.Span{span},
SchemaURL: t.schemaURL,
},
},
},
},
}, span
}
func spanKind(kind SpanKind) telemetry.SpanKind {
switch kind {
case SpanKindInternal:
return telemetry.SpanKindInternal
case SpanKindServer:
return telemetry.SpanKindServer
case SpanKindClient:
return telemetry.SpanKindClient
case SpanKindProducer:
return telemetry.SpanKindProducer
case SpanKindConsumer:
return telemetry.SpanKindConsumer
}
return telemetry.SpanKind(0) // undefined.
}
type autoSpan struct {
embedded.Span
spanContext SpanContext
sampled atomic.Bool
mu sync.Mutex
traces *telemetry.Traces
span *telemetry.Span
}
func (s *autoSpan) SpanContext() SpanContext {
if s == nil {
return SpanContext{}
}
// s.spanContext is immutable, do not acquire lock s.mu.
return s.spanContext
}
func (s *autoSpan) IsRecording() bool {
if s == nil {
return false
}
return s.sampled.Load()
}
func (s *autoSpan) SetStatus(c codes.Code, msg string) {
if s == nil || !s.sampled.Load() {
return
}
s.mu.Lock()
defer s.mu.Unlock()
if s.span.Status == nil {
s.span.Status = new(telemetry.Status)
}
s.span.Status.Message = msg
switch c {
case codes.Unset:
s.span.Status.Code = telemetry.StatusCodeUnset
case codes.Error:
s.span.Status.Code = telemetry.StatusCodeError
case codes.Ok:
s.span.Status.Code = telemetry.StatusCodeOK
}
}
func (s *autoSpan) SetAttributes(attrs ...attribute.KeyValue) {
if s == nil || !s.sampled.Load() {
return
}
s.mu.Lock()
defer s.mu.Unlock()
limit := maxSpan.Attrs
if limit == 0 {
// No attributes allowed.
n := int64(len(attrs))
if n > 0 {
s.span.DroppedAttrs += uint32(min(n, math.MaxUint32)) // nolint: gosec // Bounds checked.
}
return
}
m := make(map[string]int)
for i, a := range s.span.Attrs {
m[a.Key] = i
}
for _, a := range attrs {
val := convAttrValue(a.Value)
if val.Empty() {
s.span.DroppedAttrs++
continue
}
if idx, ok := m[string(a.Key)]; ok {
s.span.Attrs[idx] = telemetry.Attr{
Key: string(a.Key),
Value: val,
}
} else if limit < 0 || len(s.span.Attrs) < limit {
s.span.Attrs = append(s.span.Attrs, telemetry.Attr{
Key: string(a.Key),
Value: val,
})
m[string(a.Key)] = len(s.span.Attrs) - 1
} else {
s.span.DroppedAttrs++
}
}
}
// convCappedAttrs converts up to limit attrs into a []telemetry.Attr. The
// number of dropped attributes is also returned.
func convCappedAttrs(limit int, attrs []attribute.KeyValue) ([]telemetry.Attr, uint32) {
n := len(attrs)
if limit == 0 {
var out uint32
if n > 0 {
out = uint32(min(int64(n), math.MaxUint32)) // nolint: gosec // Bounds checked.
}
return nil, out
}
if limit < 0 {
// Unlimited.
return convAttrs(attrs), 0
}
if n < 0 {
n = 0
}
limit = min(n, limit)
return convAttrs(attrs[:limit]), uint32(n - limit) // nolint: gosec // Bounds checked.
}
func convAttrs(attrs []attribute.KeyValue) []telemetry.Attr {
if len(attrs) == 0 {
// Avoid allocations if not necessary.
return nil
}
out := make([]telemetry.Attr, 0, len(attrs))
for _, attr := range attrs {
key := string(attr.Key)
val := convAttrValue(attr.Value)
if val.Empty() {
continue
}
out = append(out, telemetry.Attr{Key: key, Value: val})
}
return out
}
func convAttrValue(value attribute.Value) telemetry.Value {
switch value.Type() {
case attribute.BOOL:
return telemetry.BoolValue(value.AsBool())
case attribute.INT64:
return telemetry.Int64Value(value.AsInt64())
case attribute.FLOAT64:
return telemetry.Float64Value(value.AsFloat64())
case attribute.STRING:
v := truncate(maxSpan.AttrValueLen, value.AsString())
return telemetry.StringValue(v)
case attribute.BOOLSLICE:
slice := value.AsBoolSlice()
out := make([]telemetry.Value, 0, len(slice))
for _, v := range slice {
out = append(out, telemetry.BoolValue(v))
}
return telemetry.SliceValue(out...)
case attribute.INT64SLICE:
slice := value.AsInt64Slice()
out := make([]telemetry.Value, 0, len(slice))
for _, v := range slice {
out = append(out, telemetry.Int64Value(v))
}
return telemetry.SliceValue(out...)
case attribute.FLOAT64SLICE:
slice := value.AsFloat64Slice()
out := make([]telemetry.Value, 0, len(slice))
for _, v := range slice {
out = append(out, telemetry.Float64Value(v))
}
return telemetry.SliceValue(out...)
case attribute.STRINGSLICE:
slice := value.AsStringSlice()
out := make([]telemetry.Value, 0, len(slice))
for _, v := range slice {
v = truncate(maxSpan.AttrValueLen, v)
out = append(out, telemetry.StringValue(v))
}
return telemetry.SliceValue(out...)
}
return telemetry.Value{}
}
// truncate returns a truncated version of s such that it contains less than
// the limit number of characters. Truncation is applied by returning the limit
// number of valid characters contained in s.
//
// If limit is negative, it returns the original string.
//
// UTF-8 is supported. When truncating, all invalid characters are dropped
// before applying truncation.
//
// If s already contains less than the limit number of bytes, it is returned
// unchanged. No invalid characters are removed.
func truncate(limit int, s string) string {
// This prioritize performance in the following order based on the most
// common expected use-cases.
//
// - Short values less than the default limit (128).
// - Strings with valid encodings that exceed the limit.
// - No limit.
// - Strings with invalid encodings that exceed the limit.
if limit < 0 || len(s) <= limit {
return s
}
// Optimistically, assume all valid UTF-8.
var b strings.Builder
count := 0
for i, c := range s {
if c != utf8.RuneError {
count++
if count > limit {
return s[:i]
}
continue
}
_, size := utf8.DecodeRuneInString(s[i:])
if size == 1 {
// Invalid encoding.
b.Grow(len(s) - 1)
_, _ = b.WriteString(s[:i])
s = s[i:]
break
}
}
// Fast-path, no invalid input.
if b.Cap() == 0 {
return s
}
// Truncate while validating UTF-8.
for i := 0; i < len(s) && count < limit; {
c := s[i]
if c < utf8.RuneSelf {
// Optimization for single byte runes (common case).
_ = b.WriteByte(c)
i++
count++
continue
}
_, size := utf8.DecodeRuneInString(s[i:])
if size == 1 {
// We checked for all 1-byte runes above, this is a RuneError.
i++
continue
}
_, _ = b.WriteString(s[i : i+size])
i += size
count++
}
return b.String()
}
func (s *autoSpan) End(opts ...SpanEndOption) {
if s == nil || !s.sampled.Swap(false) {
return
}
// s.end exists so the lock (s.mu) is not held while s.ended is called.
s.ended(s.end(opts))
}
func (s *autoSpan) end(opts []SpanEndOption) []byte {
s.mu.Lock()
defer s.mu.Unlock()
cfg := NewSpanEndConfig(opts...)
if t := cfg.Timestamp(); !t.IsZero() {
s.span.EndTime = cfg.Timestamp()
} else {
s.span.EndTime = time.Now()
}
b, _ := json.Marshal(s.traces) // TODO: do not ignore this error.
return b
}
// Expected to be implemented in eBPF.
//
//go:noinline
func (*autoSpan) ended(buf []byte) { ended(buf) }
// ended is used for testing.
var ended = func([]byte) {}
func (s *autoSpan) RecordError(err error, opts ...EventOption) {
if s == nil || err == nil || !s.sampled.Load() {
return
}
cfg := NewEventConfig(opts...)
attrs := cfg.Attributes()
attrs = append(attrs,
semconv.ExceptionType(typeStr(err)),
semconv.ExceptionMessage(err.Error()),
)
if cfg.StackTrace() {
buf := make([]byte, 2048)
n := runtime.Stack(buf, false)
attrs = append(attrs, semconv.ExceptionStacktrace(string(buf[0:n])))
}
s.mu.Lock()
defer s.mu.Unlock()
s.addEvent(semconv.ExceptionEventName, cfg.Timestamp(), attrs)
}
func typeStr(i any) string {
t := reflect.TypeOf(i)
if t.PkgPath() == "" && t.Name() == "" {
// Likely a builtin type.
return t.String()
}
return fmt.Sprintf("%s.%s", t.PkgPath(), t.Name())
}
func (s *autoSpan) AddEvent(name string, opts ...EventOption) {
if s == nil || !s.sampled.Load() {
return
}
cfg := NewEventConfig(opts...)
s.mu.Lock()
defer s.mu.Unlock()
s.addEvent(name, cfg.Timestamp(), cfg.Attributes())
}
// addEvent adds an event with name and attrs at tStamp to the span. The span
// lock (s.mu) needs to be held by the caller.
func (s *autoSpan) addEvent(name string, tStamp time.Time, attrs []attribute.KeyValue) {
limit := maxSpan.Events
if limit == 0 {
s.span.DroppedEvents++
return
}
if limit > 0 && len(s.span.Events) == limit {
// Drop head while avoiding allocation of more capacity.
copy(s.span.Events[:limit-1], s.span.Events[1:])
s.span.Events = s.span.Events[:limit-1]
s.span.DroppedEvents++
}
e := &telemetry.SpanEvent{Time: tStamp, Name: name}
e.Attrs, e.DroppedAttrs = convCappedAttrs(maxSpan.EventAttrs, attrs)
s.span.Events = append(s.span.Events, e)
}
func (s *autoSpan) AddLink(link Link) {
if s == nil || !s.sampled.Load() {
return
}
l := maxSpan.Links
s.mu.Lock()
defer s.mu.Unlock()
if l == 0 {
s.span.DroppedLinks++
return
}
if l > 0 && len(s.span.Links) == l {
// Drop head while avoiding allocation of more capacity.
copy(s.span.Links[:l-1], s.span.Links[1:])
s.span.Links = s.span.Links[:l-1]
s.span.DroppedLinks++
}
s.span.Links = append(s.span.Links, convLink(link))
}
func convLinks(links []Link) []*telemetry.SpanLink {
out := make([]*telemetry.SpanLink, 0, len(links))
for _, link := range links {
out = append(out, convLink(link))
}
return out
}
func convLink(link Link) *telemetry.SpanLink {
l := &telemetry.SpanLink{
TraceID: telemetry.TraceID(link.SpanContext.TraceID()),
SpanID: telemetry.SpanID(link.SpanContext.SpanID()),
TraceState: link.SpanContext.TraceState().String(),
Flags: uint32(link.SpanContext.TraceFlags()),
}
l.Attrs, l.DroppedAttrs = convCappedAttrs(maxSpan.LinkAttrs, link.Attributes)
return l
}
func (s *autoSpan) SetName(name string) {
if s == nil || !s.sampled.Load() {
return
}
s.mu.Lock()
defer s.mu.Unlock()
s.span.Name = name
}
func (*autoSpan) TracerProvider() TracerProvider { return newAutoTracerProvider() }
// maxSpan are the span limits resolved during startup.
var maxSpan = newSpanLimits()
type spanLimits struct {
// Attrs is the number of allowed attributes for a span.
//
// This is resolved from the environment variable value for the
// OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT key if it exists. Otherwise, the
// environment variable value for OTEL_ATTRIBUTE_COUNT_LIMIT, or 128 if
// that is not set, is used.
Attrs int
// AttrValueLen is the maximum attribute value length allowed for a span.
//
// This is resolved from the environment variable value for the
// OTEL_SPAN_ATTRIBUTE_VALUE_LENGTH_LIMIT key if it exists. Otherwise, the
// environment variable value for OTEL_ATTRIBUTE_VALUE_LENGTH_LIMIT, or -1
// if that is not set, is used.
AttrValueLen int
// Events is the number of allowed events for a span.
//
// This is resolved from the environment variable value for the
// OTEL_SPAN_EVENT_COUNT_LIMIT key, or 128 is used if that is not set.
Events int
// EventAttrs is the number of allowed attributes for a span event.
//
// The is resolved from the environment variable value for the
// OTEL_EVENT_ATTRIBUTE_COUNT_LIMIT key, or 128 is used if that is not set.
EventAttrs int
// Links is the number of allowed Links for a span.
//
// This is resolved from the environment variable value for the
// OTEL_SPAN_LINK_COUNT_LIMIT, or 128 is used if that is not set.
Links int
// LinkAttrs is the number of allowed attributes for a span link.
//
// This is resolved from the environment variable value for the
// OTEL_LINK_ATTRIBUTE_COUNT_LIMIT, or 128 is used if that is not set.
LinkAttrs int
}
func newSpanLimits() spanLimits {
return spanLimits{
Attrs: firstEnv(
128,
"OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT",
"OTEL_ATTRIBUTE_COUNT_LIMIT",
),
AttrValueLen: firstEnv(
-1, // Unlimited.
"OTEL_SPAN_ATTRIBUTE_VALUE_LENGTH_LIMIT",
"OTEL_ATTRIBUTE_VALUE_LENGTH_LIMIT",
),
Events: firstEnv(128, "OTEL_SPAN_EVENT_COUNT_LIMIT"),
EventAttrs: firstEnv(128, "OTEL_EVENT_ATTRIBUTE_COUNT_LIMIT"),
Links: firstEnv(128, "OTEL_SPAN_LINK_COUNT_LIMIT"),
LinkAttrs: firstEnv(128, "OTEL_LINK_ATTRIBUTE_COUNT_LIMIT"),
}
}
// firstEnv returns the parsed integer value of the first matching environment
// variable from keys. The defaultVal is returned if the value is not an
// integer or no match is found.
func firstEnv(defaultVal int, keys ...string) int {
for _, key := range keys {
strV := os.Getenv(key)
if strV == "" {
continue
}
v, err := strconv.Atoi(strV)
if err == nil {
return v
}
// Ignore invalid environment variable.
}
return defaultVal
}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package telemetry // import "go.opentelemetry.io/otel/trace/internal/telemetry"
// Attr is a key-value pair.
type Attr struct {
Key string `json:"key,omitempty"`
Value Value `json:"value,omitempty"`
}
// String returns an Attr for a string value.
func String(key, value string) Attr {
return Attr{key, StringValue(value)}
}
// Int64 returns an Attr for an int64 value.
func Int64(key string, value int64) Attr {
return Attr{key, Int64Value(value)}
}
// Int returns an Attr for an int value.
func Int(key string, value int) Attr {
return Int64(key, int64(value))
}
// Float64 returns an Attr for a float64 value.
func Float64(key string, value float64) Attr {
return Attr{key, Float64Value(value)}
}
// Bool returns an Attr for a bool value.
func Bool(key string, value bool) Attr {
return Attr{key, BoolValue(value)}
}
// Bytes returns an Attr for a []byte value.
// The passed slice must not be changed after it is passed.
func Bytes(key string, value []byte) Attr {
return Attr{key, BytesValue(value)}
}
// Slice returns an Attr for a []Value value.
// The passed slice must not be changed after it is passed.
func Slice(key string, value ...Value) Attr {
return Attr{key, SliceValue(value...)}
}
// Map returns an Attr for a map value.
// The passed slice must not be changed after it is passed.
func Map(key string, value ...Attr) Attr {
return Attr{key, MapValue(value...)}
}
// Equal returns if a is equal to b.
func (a Attr) Equal(b Attr) bool {
return a.Key == b.Key && a.Value.Equal(b.Value)
}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package telemetry
import "testing"
func TestAttrEncoding(t *testing.T) {
attrs := []Attr{
String("user", "Alice"),
Bool("admin", true),
Int64("floor", -2),
Float64("impact", 0.21362),
Slice("reports", StringValue("Bob"), StringValue("Dave")),
Map("favorites", String("food", "hot dog"), Int("number", 13)),
Bytes("secret", []byte("NUI4RUZGRjc5ODAzODEwM0QyNjlCNjMzODEzRkM2MEM=")),
}
t.Run("CamelCase", runJSONEncodingTests(attrs, []byte(`[
{
"key": "user",
"value": {
"stringValue": "Alice"
}
},
{
"key": "admin",
"value": {
"boolValue": true
}
},
{
"key": "floor",
"value": {
"intValue": "-2"
}
},
{
"key": "impact",
"value": {
"doubleValue": 0.21362
}
},
{
"key": "reports",
"value": {
"arrayValue": {
"values": [
{
"stringValue": "Bob"
},
{
"stringValue": "Dave"
}
]
}
}
},
{
"key": "favorites",
"value": {
"kvlistValue": {
"values": [
{
"key": "food",
"value": {
"stringValue": "hot dog"
}
},
{
"key": "number",
"value": {
"intValue": "13"
}
}
]
}
}
},
{
"key": "secret",
"value": {
"bytesValue": "TlVJNFJVWkdSamM1T0RBek9ERXdNMFF5TmpsQ05qTXpPREV6UmtNMk1FTT0="
}
}
]`)))
t.Run("SnakeCase/Unmarshal", runJSONUnmarshalTest(attrs, []byte(`[
{
"key": "user",
"value": {
"string_value": "Alice"
}
},
{
"key": "admin",
"value": {
"bool_value": true
}
},
{
"key": "floor",
"value": {
"int_value": "-2"
}
},
{
"key": "impact",
"value": {
"double_value": 0.21362
}
},
{
"key": "reports",
"value": {
"array_value": {
"values": [
{
"string_value": "Bob"
},
{
"string_value": "Dave"
}
]
}
}
},
{
"key": "favorites",
"value": {
"kvlist_value": {
"values": [
{
"key": "food",
"value": {
"string_value": "hot dog"
}
},
{
"key": "number",
"value": {
"int_value": "13"
}
}
]
}
}
},
{
"key": "secret",
"value": {
"bytes_value": "TlVJNFJVWkdSamM1T0RBek9ERXdNMFF5TmpsQ05qTXpPREV6UmtNMk1FTT0="
}
}
]`)))
}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package telemetry
import (
"bytes"
"encoding/json"
"testing"
"time"
)
var (
traceID = [16]byte{0x1}
spanID1 = [8]byte{0x1}
spanID2 = [8]byte{0x2}
now = time.Now()
nowPlus1 = now.Add(1 * time.Second)
spanA = &Span{
TraceID: traceID,
SpanID: spanID2,
ParentSpanID: spanID1,
Flags: 1,
Name: "span-a",
StartTime: now,
EndTime: nowPlus1,
Status: &Status{
Message: "test status",
Code: StatusCodeOK,
},
}
spanB = &Span{}
scopeSpans = &ScopeSpans{
Scope: &Scope{
Name: "TestTracer",
Version: "v0.1.0",
},
SchemaURL: "http://go.opentelemetry.io/test",
Spans: []*Span{spanA, spanB},
}
)
func BenchmarkJSONMarshalUnmarshal(b *testing.B) {
var out ScopeSpans
b.ReportAllocs()
b.ResetTimer()
for n := 0; n < b.N; n++ {
var inBuf bytes.Buffer
enc := json.NewEncoder(&inBuf)
err := enc.Encode(scopeSpans)
if err != nil {
b.Fatal(err)
}
payload := inBuf.Bytes()
dec := json.NewDecoder(bytes.NewReader(payload))
err = dec.Decode(&out)
if err != nil {
b.Fatal(err)
}
}
_ = out
}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package telemetry
import (
"bytes"
"encoding/json"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
const schema100 = "http://go.opentelemetry.io/schema/v1.0.0"
var y2k = time.Unix(0, time.Date(2000, 1, 1, 0, 0, 0, 0, time.UTC).UnixNano()) // No location.
func runJSONEncodingTests[T any](decoded T, encoded []byte) func(*testing.T) {
return func(t *testing.T) {
t.Helper()
t.Run("Unmarshal", runJSONUnmarshalTest(decoded, encoded))
t.Run("Marshal", runJSONMarshalTest(decoded, encoded))
}
}
func runJSONMarshalTest[T any](decoded T, encoded []byte) func(*testing.T) {
return func(t *testing.T) {
t.Helper()
got, err := json.Marshal(decoded)
require.NoError(t, err)
var want bytes.Buffer
require.NoError(t, json.Compact(&want, encoded))
assert.Equal(t, want.String(), string(got))
}
}
func runJSONUnmarshalTest[T any](decoded T, encoded []byte) func(*testing.T) {
return func(t *testing.T) {
t.Helper()
var got T
require.NoError(t, json.Unmarshal(encoded, &got))
assert.Equal(t, decoded, got)
}
}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
/*
Package telemetry provides a lightweight representations of OpenTelemetry
telemetry that is compatible with the OTLP JSON protobuf encoding.
*/
package telemetry // import "go.opentelemetry.io/otel/trace/internal/telemetry"

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package telemetry // import "go.opentelemetry.io/otel/trace/internal/telemetry"
import (
"encoding/hex"
"errors"
"fmt"
)
const (
traceIDSize = 16
spanIDSize = 8
)
// TraceID is a custom data type that is used for all trace IDs.
type TraceID [traceIDSize]byte
// String returns the hex string representation form of a TraceID.
func (tid TraceID) String() string {
return hex.EncodeToString(tid[:])
}
// IsEmpty returns false if id contains at least one non-zero byte.
func (tid TraceID) IsEmpty() bool {
return tid == [traceIDSize]byte{}
}
// MarshalJSON converts the trace ID into a hex string enclosed in quotes.
func (tid TraceID) MarshalJSON() ([]byte, error) {
if tid.IsEmpty() {
return []byte(`""`), nil
}
return marshalJSON(tid[:])
}
// UnmarshalJSON inflates the trace ID from hex string, possibly enclosed in
// quotes.
func (tid *TraceID) UnmarshalJSON(data []byte) error {
*tid = [traceIDSize]byte{}
return unmarshalJSON(tid[:], data)
}
// SpanID is a custom data type that is used for all span IDs.
type SpanID [spanIDSize]byte
// String returns the hex string representation form of a SpanID.
func (sid SpanID) String() string {
return hex.EncodeToString(sid[:])
}
// IsEmpty returns true if the span ID contains at least one non-zero byte.
func (sid SpanID) IsEmpty() bool {
return sid == [spanIDSize]byte{}
}
// MarshalJSON converts span ID into a hex string enclosed in quotes.
func (sid SpanID) MarshalJSON() ([]byte, error) {
if sid.IsEmpty() {
return []byte(`""`), nil
}
return marshalJSON(sid[:])
}
// UnmarshalJSON decodes span ID from hex string, possibly enclosed in quotes.
func (sid *SpanID) UnmarshalJSON(data []byte) error {
*sid = [spanIDSize]byte{}
return unmarshalJSON(sid[:], data)
}
// marshalJSON converts id into a hex string enclosed in quotes.
func marshalJSON(id []byte) ([]byte, error) {
// Plus 2 quote chars at the start and end.
hexLen := hex.EncodedLen(len(id)) + 2
b := make([]byte, hexLen)
hex.Encode(b[1:hexLen-1], id)
b[0], b[hexLen-1] = '"', '"'
return b, nil
}
// unmarshalJSON inflates trace id from hex string, possibly enclosed in quotes.
func unmarshalJSON(dst []byte, src []byte) error {
if l := len(src); l >= 2 && src[0] == '"' && src[l-1] == '"' {
src = src[1 : l-1]
}
nLen := len(src)
if nLen == 0 {
return nil
}
if len(dst) != hex.DecodedLen(nLen) {
return errors.New("invalid length for ID")
}
_, err := hex.Decode(dst, src)
if err != nil {
return fmt.Errorf("cannot unmarshal ID from string '%s': %w", string(src), err)
}
return nil
}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package telemetry // import "go.opentelemetry.io/otel/trace/internal/telemetry"
import (
"encoding/json"
"strconv"
)
// protoInt64 represents the protobuf encoding of integers which can be either
// strings or integers.
type protoInt64 int64
// Int64 returns the protoInt64 as an int64.
func (i *protoInt64) Int64() int64 { return int64(*i) }
// UnmarshalJSON decodes both strings and integers.
func (i *protoInt64) UnmarshalJSON(data []byte) error {
if data[0] == '"' {
var str string
if err := json.Unmarshal(data, &str); err != nil {
return err
}
parsedInt, err := strconv.ParseInt(str, 10, 64)
if err != nil {
return err
}
*i = protoInt64(parsedInt)
} else {
var parsedInt int64
if err := json.Unmarshal(data, &parsedInt); err != nil {
return err
}
*i = protoInt64(parsedInt)
}
return nil
}
// protoUint64 represents the protobuf encoding of integers which can be either
// strings or integers.
type protoUint64 uint64
// Int64 returns the protoUint64 as a uint64.
func (i *protoUint64) Uint64() uint64 { return uint64(*i) }
// UnmarshalJSON decodes both strings and integers.
func (i *protoUint64) UnmarshalJSON(data []byte) error {
if data[0] == '"' {
var str string
if err := json.Unmarshal(data, &str); err != nil {
return err
}
parsedUint, err := strconv.ParseUint(str, 10, 64)
if err != nil {
return err
}
*i = protoUint64(parsedUint)
} else {
var parsedUint uint64
if err := json.Unmarshal(data, &parsedUint); err != nil {
return err
}
*i = protoUint64(parsedUint)
}
return nil
}

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@@ -0,0 +1,66 @@
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package telemetry // import "go.opentelemetry.io/otel/trace/internal/telemetry"
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"io"
)
// Resource information.
type Resource struct {
// Attrs are the set of attributes that describe the resource. Attribute
// keys MUST be unique (it is not allowed to have more than one attribute
// with the same key).
Attrs []Attr `json:"attributes,omitempty"`
// DroppedAttrs is the number of dropped attributes. If the value
// is 0, then no attributes were dropped.
DroppedAttrs uint32 `json:"droppedAttributesCount,omitempty"`
}
// UnmarshalJSON decodes the OTLP formatted JSON contained in data into r.
func (r *Resource) UnmarshalJSON(data []byte) error {
decoder := json.NewDecoder(bytes.NewReader(data))
t, err := decoder.Token()
if err != nil {
return err
}
if t != json.Delim('{') {
return errors.New("invalid Resource type")
}
for decoder.More() {
keyIface, err := decoder.Token()
if err != nil {
if errors.Is(err, io.EOF) {
// Empty.
return nil
}
return err
}
key, ok := keyIface.(string)
if !ok {
return fmt.Errorf("invalid Resource field: %#v", keyIface)
}
switch key {
case "attributes":
err = decoder.Decode(&r.Attrs)
case "droppedAttributesCount", "dropped_attributes_count":
err = decoder.Decode(&r.DroppedAttrs)
default:
// Skip unknown.
}
if err != nil {
return err
}
}
return nil
}

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@@ -0,0 +1,37 @@
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package telemetry
import "testing"
func TestResourceEncoding(t *testing.T) {
res := &Resource{
Attrs: []Attr{String("key", "val")},
DroppedAttrs: 10,
}
t.Run("CamelCase", runJSONEncodingTests(res, []byte(`{
"attributes": [
{
"key": "key",
"value": {
"stringValue": "val"
}
}
],
"droppedAttributesCount": 10
}`)))
t.Run("SnakeCase/Unmarshal", runJSONUnmarshalTest(res, []byte(`{
"attributes": [
{
"key": "key",
"value": {
"string_value": "val"
}
}
],
"dropped_attributes_count": 10
}`)))
}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package telemetry // import "go.opentelemetry.io/otel/trace/internal/telemetry"
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"io"
)
// Scope is the identifying values of the instrumentation scope.
type Scope struct {
Name string `json:"name,omitempty"`
Version string `json:"version,omitempty"`
Attrs []Attr `json:"attributes,omitempty"`
DroppedAttrs uint32 `json:"droppedAttributesCount,omitempty"`
}
// UnmarshalJSON decodes the OTLP formatted JSON contained in data into r.
func (s *Scope) UnmarshalJSON(data []byte) error {
decoder := json.NewDecoder(bytes.NewReader(data))
t, err := decoder.Token()
if err != nil {
return err
}
if t != json.Delim('{') {
return errors.New("invalid Scope type")
}
for decoder.More() {
keyIface, err := decoder.Token()
if err != nil {
if errors.Is(err, io.EOF) {
// Empty.
return nil
}
return err
}
key, ok := keyIface.(string)
if !ok {
return fmt.Errorf("invalid Scope field: %#v", keyIface)
}
switch key {
case "name":
err = decoder.Decode(&s.Name)
case "version":
err = decoder.Decode(&s.Version)
case "attributes":
err = decoder.Decode(&s.Attrs)
case "droppedAttributesCount", "dropped_attributes_count":
err = decoder.Decode(&s.DroppedAttrs)
default:
// Skip unknown.
}
if err != nil {
return err
}
}
return nil
}

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@@ -0,0 +1,43 @@
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package telemetry
import "testing"
func TestScopeEncoding(t *testing.T) {
scope := &Scope{
Name: "go.opentelemetry.io/otel/trace/internal/telemetry/test",
Version: "v0.0.1",
Attrs: []Attr{String("department", "ops")},
DroppedAttrs: 1,
}
t.Run("CamelCase", runJSONEncodingTests(scope, []byte(`{
"name": "go.opentelemetry.io/otel/trace/internal/telemetry/test",
"version": "v0.0.1",
"attributes": [
{
"key": "department",
"value": {
"stringValue": "ops"
}
}
],
"droppedAttributesCount": 1
}`)))
t.Run("SnakeCase/Unmarshal", runJSONUnmarshalTest(scope, []byte(`{
"name": "go.opentelemetry.io/otel/trace/internal/telemetry/test",
"version": "v0.0.1",
"attributes": [
{
"key": "department",
"value": {
"string_value": "ops"
}
}
],
"dropped_attributes_count": 1
}`)))
}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package telemetry // import "go.opentelemetry.io/otel/trace/internal/telemetry"
import (
"bytes"
"encoding/hex"
"encoding/json"
"errors"
"fmt"
"io"
"math"
"time"
)
// A Span represents a single operation performed by a single component of the
// system.
type Span struct {
// A unique identifier for a trace. All spans from the same trace share
// the same `trace_id`. The ID is a 16-byte array. An ID with all zeroes OR
// of length other than 16 bytes is considered invalid (empty string in OTLP/JSON
// is zero-length and thus is also invalid).
//
// This field is required.
TraceID TraceID `json:"traceId,omitempty"`
// A unique identifier for a span within a trace, assigned when the span
// is created. The ID is an 8-byte array. An ID with all zeroes OR of length
// other than 8 bytes is considered invalid (empty string in OTLP/JSON
// is zero-length and thus is also invalid).
//
// This field is required.
SpanID SpanID `json:"spanId,omitempty"`
// trace_state conveys information about request position in multiple distributed tracing graphs.
// It is a trace_state in w3c-trace-context format: https://www.w3.org/TR/trace-context/#tracestate-header
// See also https://github.com/w3c/distributed-tracing for more details about this field.
TraceState string `json:"traceState,omitempty"`
// The `span_id` of this span's parent span. If this is a root span, then this
// field must be empty. The ID is an 8-byte array.
ParentSpanID SpanID `json:"parentSpanId,omitempty"`
// Flags, a bit field.
//
// Bits 0-7 (8 least significant bits) are the trace flags as defined in W3C Trace
// Context specification. To read the 8-bit W3C trace flag, use
// `flags & SPAN_FLAGS_TRACE_FLAGS_MASK`.
//
// See https://www.w3.org/TR/trace-context-2/#trace-flags for the flag definitions.
//
// Bits 8 and 9 represent the 3 states of whether a span's parent
// is remote. The states are (unknown, is not remote, is remote).
// To read whether the value is known, use `(flags & SPAN_FLAGS_CONTEXT_HAS_IS_REMOTE_MASK) != 0`.
// To read whether the span is remote, use `(flags & SPAN_FLAGS_CONTEXT_IS_REMOTE_MASK) != 0`.
//
// When creating span messages, if the message is logically forwarded from another source
// with an equivalent flags fields (i.e., usually another OTLP span message), the field SHOULD
// be copied as-is. If creating from a source that does not have an equivalent flags field
// (such as a runtime representation of an OpenTelemetry span), the high 22 bits MUST
// be set to zero.
// Readers MUST NOT assume that bits 10-31 (22 most significant bits) will be zero.
//
// [Optional].
Flags uint32 `json:"flags,omitempty"`
// A description of the span's operation.
//
// For example, the name can be a qualified method name or a file name
// and a line number where the operation is called. A best practice is to use
// the same display name at the same call point in an application.
// This makes it easier to correlate spans in different traces.
//
// This field is semantically required to be set to non-empty string.
// Empty value is equivalent to an unknown span name.
//
// This field is required.
Name string `json:"name"`
// Distinguishes between spans generated in a particular context. For example,
// two spans with the same name may be distinguished using `CLIENT` (caller)
// and `SERVER` (callee) to identify queueing latency associated with the span.
Kind SpanKind `json:"kind,omitempty"`
// start_time_unix_nano is the start time of the span. On the client side, this is the time
// kept by the local machine where the span execution starts. On the server side, this
// is the time when the server's application handler starts running.
// Value is UNIX Epoch time in nanoseconds since 00:00:00 UTC on 1 January 1970.
//
// This field is semantically required and it is expected that end_time >= start_time.
StartTime time.Time `json:"startTimeUnixNano,omitempty"`
// end_time_unix_nano is the end time of the span. On the client side, this is the time
// kept by the local machine where the span execution ends. On the server side, this
// is the time when the server application handler stops running.
// Value is UNIX Epoch time in nanoseconds since 00:00:00 UTC on 1 January 1970.
//
// This field is semantically required and it is expected that end_time >= start_time.
EndTime time.Time `json:"endTimeUnixNano,omitempty"`
// attributes is a collection of key/value pairs. Note, global attributes
// like server name can be set using the resource API. Examples of attributes:
//
// "/http/user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36"
// "/http/server_latency": 300
// "example.com/myattribute": true
// "example.com/score": 10.239
//
// The OpenTelemetry API specification further restricts the allowed value types:
// https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/common/README.md#attribute
// Attribute keys MUST be unique (it is not allowed to have more than one
// attribute with the same key).
Attrs []Attr `json:"attributes,omitempty"`
// dropped_attributes_count is the number of attributes that were discarded. Attributes
// can be discarded because their keys are too long or because there are too many
// attributes. If this value is 0, then no attributes were dropped.
DroppedAttrs uint32 `json:"droppedAttributesCount,omitempty"`
// events is a collection of Event items.
Events []*SpanEvent `json:"events,omitempty"`
// dropped_events_count is the number of dropped events. If the value is 0, then no
// events were dropped.
DroppedEvents uint32 `json:"droppedEventsCount,omitempty"`
// links is a collection of Links, which are references from this span to a span
// in the same or different trace.
Links []*SpanLink `json:"links,omitempty"`
// dropped_links_count is the number of dropped links after the maximum size was
// enforced. If this value is 0, then no links were dropped.
DroppedLinks uint32 `json:"droppedLinksCount,omitempty"`
// An optional final status for this span. Semantically when Status isn't set, it means
// span's status code is unset, i.e. assume STATUS_CODE_UNSET (code = 0).
Status *Status `json:"status,omitempty"`
}
// MarshalJSON encodes s into OTLP formatted JSON.
func (s Span) MarshalJSON() ([]byte, error) {
startT := s.StartTime.UnixNano()
if s.StartTime.IsZero() || startT < 0 {
startT = 0
}
endT := s.EndTime.UnixNano()
if s.EndTime.IsZero() || endT < 0 {
endT = 0
}
// Override non-empty default SpanID marshal and omitempty.
var parentSpanId string
if !s.ParentSpanID.IsEmpty() {
b := make([]byte, hex.EncodedLen(spanIDSize))
hex.Encode(b, s.ParentSpanID[:])
parentSpanId = string(b)
}
type Alias Span
return json.Marshal(struct {
Alias
ParentSpanID string `json:"parentSpanId,omitempty"`
StartTime uint64 `json:"startTimeUnixNano,omitempty"`
EndTime uint64 `json:"endTimeUnixNano,omitempty"`
}{
Alias: Alias(s),
ParentSpanID: parentSpanId,
StartTime: uint64(startT), // nolint:gosec // >0 checked above.
EndTime: uint64(endT), // nolint:gosec // >0 checked above.
})
}
// UnmarshalJSON decodes the OTLP formatted JSON contained in data into s.
func (s *Span) UnmarshalJSON(data []byte) error {
decoder := json.NewDecoder(bytes.NewReader(data))
t, err := decoder.Token()
if err != nil {
return err
}
if t != json.Delim('{') {
return errors.New("invalid Span type")
}
for decoder.More() {
keyIface, err := decoder.Token()
if err != nil {
if errors.Is(err, io.EOF) {
// Empty.
return nil
}
return err
}
key, ok := keyIface.(string)
if !ok {
return fmt.Errorf("invalid Span field: %#v", keyIface)
}
switch key {
case "traceId", "trace_id":
err = decoder.Decode(&s.TraceID)
case "spanId", "span_id":
err = decoder.Decode(&s.SpanID)
case "traceState", "trace_state":
err = decoder.Decode(&s.TraceState)
case "parentSpanId", "parent_span_id":
err = decoder.Decode(&s.ParentSpanID)
case "flags":
err = decoder.Decode(&s.Flags)
case "name":
err = decoder.Decode(&s.Name)
case "kind":
err = decoder.Decode(&s.Kind)
case "startTimeUnixNano", "start_time_unix_nano":
var val protoUint64
err = decoder.Decode(&val)
v := int64(min(val.Uint64(), math.MaxInt64)) // nolint: gosec // Overflow checked.
s.StartTime = time.Unix(0, v)
case "endTimeUnixNano", "end_time_unix_nano":
var val protoUint64
err = decoder.Decode(&val)
v := int64(min(val.Uint64(), math.MaxInt64)) // nolint: gosec // Overflow checked.
s.EndTime = time.Unix(0, v)
case "attributes":
err = decoder.Decode(&s.Attrs)
case "droppedAttributesCount", "dropped_attributes_count":
err = decoder.Decode(&s.DroppedAttrs)
case "events":
err = decoder.Decode(&s.Events)
case "droppedEventsCount", "dropped_events_count":
err = decoder.Decode(&s.DroppedEvents)
case "links":
err = decoder.Decode(&s.Links)
case "droppedLinksCount", "dropped_links_count":
err = decoder.Decode(&s.DroppedLinks)
case "status":
err = decoder.Decode(&s.Status)
default:
// Skip unknown.
}
if err != nil {
return err
}
}
return nil
}
// SpanFlags represents constants used to interpret the
// Span.flags field, which is protobuf 'fixed32' type and is to
// be used as bit-fields. Each non-zero value defined in this enum is
// a bit-mask. To extract the bit-field, for example, use an
// expression like:
//
// (span.flags & SPAN_FLAGS_TRACE_FLAGS_MASK)
//
// See https://www.w3.org/TR/trace-context-2/#trace-flags for the flag definitions.
//
// Note that Span flags were introduced in version 1.1 of the
// OpenTelemetry protocol. Older Span producers do not set this
// field, consequently consumers should not rely on the absence of a
// particular flag bit to indicate the presence of a particular feature.
type SpanFlags int32
const (
// Bits 0-7 are used for trace flags.
SpanFlagsTraceFlagsMask SpanFlags = 255
// Bits 8 and 9 are used to indicate that the parent span or link span is remote.
// Bit 8 (`HAS_IS_REMOTE`) indicates whether the value is known.
// Bit 9 (`IS_REMOTE`) indicates whether the span or link is remote.
SpanFlagsContextHasIsRemoteMask SpanFlags = 256
// SpanFlagsContextHasIsRemoteMask indicates the Span is remote.
SpanFlagsContextIsRemoteMask SpanFlags = 512
)
// SpanKind is the type of span. Can be used to specify additional relationships between spans
// in addition to a parent/child relationship.
type SpanKind int32
const (
// Indicates that the span represents an internal operation within an application,
// as opposed to an operation happening at the boundaries. Default value.
SpanKindInternal SpanKind = 1
// Indicates that the span covers server-side handling of an RPC or other
// remote network request.
SpanKindServer SpanKind = 2
// Indicates that the span describes a request to some remote service.
SpanKindClient SpanKind = 3
// Indicates that the span describes a producer sending a message to a broker.
// Unlike CLIENT and SERVER, there is often no direct critical path latency relationship
// between producer and consumer spans. A PRODUCER span ends when the message was accepted
// by the broker while the logical processing of the message might span a much longer time.
SpanKindProducer SpanKind = 4
// Indicates that the span describes consumer receiving a message from a broker.
// Like the PRODUCER kind, there is often no direct critical path latency relationship
// between producer and consumer spans.
SpanKindConsumer SpanKind = 5
)
// Event is a time-stamped annotation of the span, consisting of user-supplied
// text description and key-value pairs.
type SpanEvent struct {
// time_unix_nano is the time the event occurred.
Time time.Time `json:"timeUnixNano,omitempty"`
// name of the event.
// This field is semantically required to be set to non-empty string.
Name string `json:"name,omitempty"`
// attributes is a collection of attribute key/value pairs on the event.
// Attribute keys MUST be unique (it is not allowed to have more than one
// attribute with the same key).
Attrs []Attr `json:"attributes,omitempty"`
// dropped_attributes_count is the number of dropped attributes. If the value is 0,
// then no attributes were dropped.
DroppedAttrs uint32 `json:"droppedAttributesCount,omitempty"`
}
// MarshalJSON encodes e into OTLP formatted JSON.
func (e SpanEvent) MarshalJSON() ([]byte, error) {
t := e.Time.UnixNano()
if e.Time.IsZero() || t < 0 {
t = 0
}
type Alias SpanEvent
return json.Marshal(struct {
Alias
Time uint64 `json:"timeUnixNano,omitempty"`
}{
Alias: Alias(e),
Time: uint64(t), // nolint: gosec // >0 checked above
})
}
// UnmarshalJSON decodes the OTLP formatted JSON contained in data into se.
func (se *SpanEvent) UnmarshalJSON(data []byte) error {
decoder := json.NewDecoder(bytes.NewReader(data))
t, err := decoder.Token()
if err != nil {
return err
}
if t != json.Delim('{') {
return errors.New("invalid SpanEvent type")
}
for decoder.More() {
keyIface, err := decoder.Token()
if err != nil {
if errors.Is(err, io.EOF) {
// Empty.
return nil
}
return err
}
key, ok := keyIface.(string)
if !ok {
return fmt.Errorf("invalid SpanEvent field: %#v", keyIface)
}
switch key {
case "timeUnixNano", "time_unix_nano":
var val protoUint64
err = decoder.Decode(&val)
v := int64(min(val.Uint64(), math.MaxInt64)) // nolint: gosec // Overflow checked.
se.Time = time.Unix(0, v)
case "name":
err = decoder.Decode(&se.Name)
case "attributes":
err = decoder.Decode(&se.Attrs)
case "droppedAttributesCount", "dropped_attributes_count":
err = decoder.Decode(&se.DroppedAttrs)
default:
// Skip unknown.
}
if err != nil {
return err
}
}
return nil
}
// A pointer from the current span to another span in the same trace or in a
// different trace. For example, this can be used in batching operations,
// where a single batch handler processes multiple requests from different
// traces or when the handler receives a request from a different project.
type SpanLink struct {
// A unique identifier of a trace that this linked span is part of. The ID is a
// 16-byte array.
TraceID TraceID `json:"traceId,omitempty"`
// A unique identifier for the linked span. The ID is an 8-byte array.
SpanID SpanID `json:"spanId,omitempty"`
// The trace_state associated with the link.
TraceState string `json:"traceState,omitempty"`
// attributes is a collection of attribute key/value pairs on the link.
// Attribute keys MUST be unique (it is not allowed to have more than one
// attribute with the same key).
Attrs []Attr `json:"attributes,omitempty"`
// dropped_attributes_count is the number of dropped attributes. If the value is 0,
// then no attributes were dropped.
DroppedAttrs uint32 `json:"droppedAttributesCount,omitempty"`
// Flags, a bit field.
//
// Bits 0-7 (8 least significant bits) are the trace flags as defined in W3C Trace
// Context specification. To read the 8-bit W3C trace flag, use
// `flags & SPAN_FLAGS_TRACE_FLAGS_MASK`.
//
// See https://www.w3.org/TR/trace-context-2/#trace-flags for the flag definitions.
//
// Bits 8 and 9 represent the 3 states of whether the link is remote.
// The states are (unknown, is not remote, is remote).
// To read whether the value is known, use `(flags & SPAN_FLAGS_CONTEXT_HAS_IS_REMOTE_MASK) != 0`.
// To read whether the link is remote, use `(flags & SPAN_FLAGS_CONTEXT_IS_REMOTE_MASK) != 0`.
//
// Readers MUST NOT assume that bits 10-31 (22 most significant bits) will be zero.
// When creating new spans, bits 10-31 (most-significant 22-bits) MUST be zero.
//
// [Optional].
Flags uint32 `json:"flags,omitempty"`
}
// UnmarshalJSON decodes the OTLP formatted JSON contained in data into sl.
func (sl *SpanLink) UnmarshalJSON(data []byte) error {
decoder := json.NewDecoder(bytes.NewReader(data))
t, err := decoder.Token()
if err != nil {
return err
}
if t != json.Delim('{') {
return errors.New("invalid SpanLink type")
}
for decoder.More() {
keyIface, err := decoder.Token()
if err != nil {
if errors.Is(err, io.EOF) {
// Empty.
return nil
}
return err
}
key, ok := keyIface.(string)
if !ok {
return fmt.Errorf("invalid SpanLink field: %#v", keyIface)
}
switch key {
case "traceId", "trace_id":
err = decoder.Decode(&sl.TraceID)
case "spanId", "span_id":
err = decoder.Decode(&sl.SpanID)
case "traceState", "trace_state":
err = decoder.Decode(&sl.TraceState)
case "attributes":
err = decoder.Decode(&sl.Attrs)
case "droppedAttributesCount", "dropped_attributes_count":
err = decoder.Decode(&sl.DroppedAttrs)
case "flags":
err = decoder.Decode(&sl.Flags)
default:
// Skip unknown.
}
if err != nil {
return err
}
}
return nil
}

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@@ -0,0 +1,200 @@
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package telemetry
import (
"testing"
"time"
)
func TestSpanEncoding(t *testing.T) {
span := &Span{
TraceID: [16]byte{0x1},
SpanID: [8]byte{0x2},
TraceState: "test=a",
ParentSpanID: [8]byte{0x1},
Flags: 1,
Name: "span.a",
Kind: SpanKindClient,
StartTime: y2k,
EndTime: y2k.Add(time.Second),
Attrs: []Attr{String("key", "val")},
DroppedAttrs: 2,
Events: []*SpanEvent{{
Name: "name",
}},
DroppedEvents: 3,
Links: []*SpanLink{{
TraceID: TraceID{0x2},
SpanID: SpanID{0x1},
}},
DroppedLinks: 4,
Status: &Status{
Message: "okay",
Code: StatusCodeOK,
},
}
t.Run("CamelCase", runJSONEncodingTests(span, []byte(`{
"traceId": "01000000000000000000000000000000",
"spanId": "0200000000000000",
"traceState": "test=a",
"flags": 1,
"name": "span.a",
"kind": 3,
"attributes": [
{
"key": "key",
"value": {
"stringValue": "val"
}
}
],
"droppedAttributesCount": 2,
"events": [
{
"name": "name"
}
],
"droppedEventsCount": 3,
"links": [
{
"traceId": "02000000000000000000000000000000",
"spanId": "0100000000000000"
}
],
"droppedLinksCount": 4,
"status": {
"message": "okay",
"code": 1
},
"parentSpanId": "0100000000000000",
"startTimeUnixNano": 946684800000000000,
"endTimeUnixNano": 946684801000000000
}`)))
t.Run("SnakeCase/Unmarshal", runJSONUnmarshalTest(span, []byte(`{
"trace_id": "01000000000000000000000000000000",
"span_id": "0200000000000000",
"trace_state": "test=a",
"flags": 1,
"name": "span.a",
"kind": 3,
"attributes": [
{
"key": "key",
"value": {
"string_value": "val"
}
}
],
"dropped_attributes_count": 2,
"events": [
{
"name": "name"
}
],
"dropped_events_count": 3,
"links": [
{
"trace_id": "02000000000000000000000000000000",
"span_id": "0100000000000000"
}
],
"dropped_links_count": 4,
"status": {
"message": "okay",
"code": 1
},
"parent_span_id": "0100000000000000",
"start_time_unix_nano": 946684800000000000,
"end_time_unix_nano": 946684801000000000
}`)))
t.Run("RequiredFields", runJSONMarshalTest(new(Span), []byte(`{
"traceId": "",
"spanId": "",
"name": ""
}`)))
}
func TestSpanEventEncoding(t *testing.T) {
event := &SpanEvent{
Time: y2k.Add(10 * time.Microsecond),
Name: "span.event",
Attrs: []Attr{Float64("impact", 0.4372)},
DroppedAttrs: 2,
}
t.Run("CamelCase", runJSONEncodingTests(event, []byte(`{
"name": "span.event",
"attributes": [
{
"key": "impact",
"value": {
"doubleValue": 0.4372
}
}
],
"droppedAttributesCount": 2,
"timeUnixNano": 946684800000010000
}`)))
t.Run("SnakeCase/Unmarshal", runJSONUnmarshalTest(event, []byte(`{
"name": "span.event",
"attributes": [
{
"key": "impact",
"value": {
"double_value": 0.4372
}
}
],
"dropped_attributes_count": 2,
"time_unix_nano": 946684800000010000
}`)))
}
func TestSpanLinkEncoding(t *testing.T) {
link := &SpanLink{
TraceID: TraceID{0x2},
SpanID: SpanID{0x1},
TraceState: "test=green",
Attrs: []Attr{Int("queue", 17)},
DroppedAttrs: 8,
Flags: 1,
}
t.Run("CamelCase", runJSONEncodingTests(link, []byte(`{
"traceId": "02000000000000000000000000000000",
"spanId": "0100000000000000",
"traceState": "test=green",
"attributes": [
{
"key": "queue",
"value": {
"intValue": "17"
}
}
],
"droppedAttributesCount": 8,
"flags": 1
}`)))
t.Run("SnakeCase/Unmarshal", runJSONUnmarshalTest(link, []byte(`{
"trace_id": "02000000000000000000000000000000",
"span_id": "0100000000000000",
"trace_state": "test=green",
"attributes": [
{
"key": "queue",
"value": {
"int_value": "17"
}
}
],
"dropped_attributes_count": 8,
"flags": 1
}`)))
}

View File

@@ -0,0 +1,40 @@
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package telemetry // import "go.opentelemetry.io/otel/trace/internal/telemetry"
// For the semantics of status codes see
// https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/trace/api.md#set-status
type StatusCode int32
const (
// The default status.
StatusCodeUnset StatusCode = 0
// The Span has been validated by an Application developer or Operator to
// have completed successfully.
StatusCodeOK StatusCode = 1
// The Span contains an error.
StatusCodeError StatusCode = 2
)
var statusCodeStrings = []string{
"Unset",
"OK",
"Error",
}
func (s StatusCode) String() string {
if s >= 0 && int(s) < len(statusCodeStrings) {
return statusCodeStrings[s]
}
return "<unknown telemetry.StatusCode>"
}
// The Status type defines a logical error model that is suitable for different
// programming environments, including REST APIs and RPC APIs.
type Status struct {
// A developer-facing human readable error message.
Message string `json:"message,omitempty"`
// The status code.
Code StatusCode `json:"code,omitempty"`
}

View File

@@ -0,0 +1,244 @@
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package test
import (
"bytes"
"encoding/json"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.opentelemetry.io/collector/pdata/pcommon"
"go.opentelemetry.io/collector/pdata/ptrace"
"go.opentelemetry.io/otel/trace/internal/telemetry"
)
var (
y2k = time.Unix(0, time.Date(2000, 1, 1, 0, 0, 0, 0, time.UTC).UnixNano()) // No location.
attrsA = []telemetry.Attr{
telemetry.String("user", "Alice"),
telemetry.Bool("admin", true),
telemetry.Int64("floor", -2),
telemetry.Float64("impact", 0.21362),
telemetry.Slice(
"reports",
telemetry.StringValue("Bob"),
telemetry.StringValue("Dave"),
),
telemetry.Map(
"favorites",
telemetry.String("food", "hot dog"),
telemetry.Int("number", 13),
),
telemetry.Bytes(
"secret",
[]byte("NUI4RUZGRjc5ODAzODEwM0QyNjlCNjMzODEzRkM2MEM="),
),
}
pAttrsA = func() pcommon.Map {
m := pcommon.NewMap()
m.PutStr("user", "Alice")
m.PutBool("admin", true)
m.PutInt("floor", -2)
m.PutDouble("impact", 0.21362)
s := m.PutEmptySlice("reports")
s.AppendEmpty().SetStr("Bob")
s.AppendEmpty().SetStr("Dave")
fav := m.PutEmptyMap("favorites")
fav.PutStr("food", "hot dog")
fav.PutInt("number", 13)
sec := m.PutEmptyBytes("secret")
sec.FromRaw([]byte("NUI4RUZGRjc5ODAzODEwM0QyNjlCNjMzODEzRkM2MEM="))
return m
}()
link = &telemetry.SpanLink{
TraceID: telemetry.TraceID{0x2},
SpanID: telemetry.SpanID{0x1},
TraceState: "test=green",
Attrs: []telemetry.Attr{telemetry.Int("queue", 17)},
DroppedAttrs: 8,
Flags: 1,
}
pLink = func() ptrace.SpanLink {
l := ptrace.NewSpanLink()
l.SetTraceID(pcommon.TraceID{0x2})
l.SetSpanID(pcommon.SpanID{0x1})
l.TraceState().FromRaw("test=green")
l.Attributes().PutInt("queue", 17)
l.SetDroppedAttributesCount(8)
l.SetFlags(1)
return l
}()
event = &telemetry.SpanEvent{
Time: y2k.Add(10 * time.Microsecond),
Name: "span.event",
Attrs: []telemetry.Attr{telemetry.Float64("impact", 0.4372)},
DroppedAttrs: 2,
}
prevent = func() ptrace.SpanEvent {
e := ptrace.NewSpanEvent()
e.SetTimestamp(pcommon.NewTimestampFromTime(y2k.Add(10 * time.Microsecond)))
e.SetName("span.event")
e.Attributes().PutDouble("impact", 0.4372)
e.SetDroppedAttributesCount(2)
return e
}()
spanA = &telemetry.Span{
TraceID: [16]byte{0x1},
SpanID: [8]byte{0x2},
TraceState: "test=a",
ParentSpanID: [8]byte{0x1},
Flags: 1,
Name: "span.a",
Kind: telemetry.SpanKindClient,
StartTime: y2k,
EndTime: y2k.Add(time.Second),
Attrs: attrsA,
DroppedAttrs: 2,
Events: []*telemetry.SpanEvent{event},
DroppedEvents: 3,
Links: []*telemetry.SpanLink{link},
DroppedLinks: 4,
Status: &telemetry.Status{
Message: "okay",
Code: telemetry.StatusCodeOK,
},
}
pSpanA = func() ptrace.Span {
s := ptrace.NewSpan()
s.SetTraceID(pcommon.TraceID([16]byte{0x1}))
s.SetSpanID(pcommon.SpanID([8]byte{0x2}))
ts := s.TraceState()
ts.FromRaw("test=a")
s.SetParentSpanID(pcommon.SpanID([8]byte{0x1}))
s.SetFlags(1)
s.SetName("span.a")
s.SetKind(ptrace.SpanKindClient)
s.SetStartTimestamp(pcommon.NewTimestampFromTime(y2k))
s.SetEndTimestamp(pcommon.NewTimestampFromTime(y2k.Add(time.Second)))
pAttrsA.CopyTo(s.Attributes())
s.SetDroppedAttributesCount(2)
prevent.CopyTo(s.Events().AppendEmpty())
s.SetDroppedEventsCount(3)
pLink.CopyTo(s.Links().AppendEmpty())
s.SetDroppedLinksCount(4)
stat := s.Status()
stat.SetMessage("okay")
stat.SetCode(ptrace.StatusCodeOk)
return s
}()
schema100 = "http://go.opentelemetry.io/schema/v1.0.0"
scope = &telemetry.Scope{
Name: "go.opentelemetry.io/otel/trace/internal/telemetry/test",
Version: "v0.0.1",
Attrs: []telemetry.Attr{telemetry.String("department", "ops")},
DroppedAttrs: 1,
}
pScope = func() pcommon.InstrumentationScope {
s := pcommon.NewInstrumentationScope()
s.SetName("go.opentelemetry.io/otel/trace/internal/telemetry/test")
s.SetVersion("v0.0.1")
s.Attributes().PutStr("department", "ops")
s.SetDroppedAttributesCount(1)
return s
}()
scopeSpans = &telemetry.ScopeSpans{
Scope: scope,
Spans: []*telemetry.Span{spanA},
SchemaURL: schema100,
}
pScopeSpans = func() ptrace.ScopeSpans {
s := ptrace.NewScopeSpans()
pSpanA.CopyTo(s.Spans().AppendEmpty())
pScope.CopyTo(s.Scope())
s.SetSchemaUrl(schema100)
return s
}()
res = telemetry.Resource{
Attrs: []telemetry.Attr{
telemetry.String("host", "hal"),
telemetry.Int("id", 42),
},
DroppedAttrs: 100,
}
press = func() pcommon.Resource {
r := pcommon.NewResource()
r.Attributes().PutStr("host", "hal")
r.Attributes().PutInt("id", 42)
r.SetDroppedAttributesCount(100)
return r
}()
resSpans = &telemetry.ResourceSpans{
Resource: res,
SchemaURL: schema100,
ScopeSpans: []*telemetry.ScopeSpans{scopeSpans},
}
pResSpans = func() ptrace.ResourceSpans {
rs := ptrace.NewResourceSpans()
press.CopyTo(rs.Resource())
pScopeSpans.CopyTo(rs.ScopeSpans().AppendEmpty())
rs.SetSchemaUrl(schema100)
return rs
}()
traces = telemetry.Traces{
ResourceSpans: []*telemetry.ResourceSpans{
resSpans,
},
}
pTraces = func() ptrace.Traces {
traces := ptrace.NewTraces()
pResSpans.CopyTo(traces.ResourceSpans().AppendEmpty())
return traces
}()
)
func TestDecode(t *testing.T) {
var enc ptrace.JSONMarshaler
b, err := enc.MarshalTraces(pTraces)
require.NoError(t, err)
t.Log(string(b)) // This helps when test fails to understand what is being decoded.
var got telemetry.Traces
dec := json.NewDecoder(bytes.NewReader(b))
require.NoError(t, dec.Decode(&got))
assert.Equal(t, traces, got)
}
func TestEncode(t *testing.T) {
var buf bytes.Buffer
enc := json.NewEncoder(&buf)
require.NoError(t, enc.Encode(traces))
data := buf.Bytes()
t.Log(string(data)) // This helps when test fails to understand what how the data has been encoded.
var dec ptrace.JSONUnmarshaler
got, err := dec.UnmarshalTraces(data)
require.NoError(t, err)
assert.Equal(t, pTraces, got)
}

View File

@@ -0,0 +1,7 @@
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
// Package test provides isolated testing for
// go.opentelemetry.io/ote/trace/internal/telemetry. It exists to ensure that
// package is tested without importing any OTLP or pdata dependencies.
package test // import "go.opentelemetry.io/otel/trace/internal/telemetry/test"

View File

@@ -0,0 +1,35 @@
module go.opentelemetry.io/otel/trace/internal/telemetry/test
go 1.22.0
require (
github.com/stretchr/testify v1.10.0
go.opentelemetry.io/collector/pdata v1.24.0
go.opentelemetry.io/otel/trace v1.32.0
)
require (
github.com/davecgh/go-spew v1.1.1 // indirect
github.com/gogo/protobuf v1.3.2 // indirect
github.com/json-iterator/go v1.1.12 // indirect
github.com/kr/text v0.2.0 // indirect
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
github.com/modern-go/reflect2 v1.0.2 // indirect
github.com/pmezard/go-difflib v1.0.0 // indirect
github.com/rogpeppe/go-internal v1.13.1 // indirect
go.opentelemetry.io/auto/sdk v1.1.0 // indirect
go.uber.org/multierr v1.11.0 // indirect
golang.org/x/net v0.34.0 // indirect
golang.org/x/sys v0.29.0 // indirect
golang.org/x/text v0.21.0 // indirect
google.golang.org/genproto/googleapis/rpc v0.0.0-20250122153221-138b5a5a4fd4 // indirect
google.golang.org/grpc v1.69.4 // indirect
google.golang.org/protobuf v1.36.3 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
)
replace go.opentelemetry.io/otel/trace => ../../..
replace go.opentelemetry.io/otel => ../../../..
replace go.opentelemetry.io/otel/metric => ../../../../metric

View File

@@ -0,0 +1,94 @@
github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/go-logr/logr v1.4.2 h1:6pFjapn8bFcIbiKo3XT4j/BhANplGihG6tvd+8rYgrY=
github.com/go-logr/logr v1.4.2/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
github.com/golang/protobuf v1.5.4 h1:i7eJL8qZTpSEXOPTxNKhASYpMn+8e5Q6AdndVa1dWek=
github.com/golang/protobuf v1.5.4/go.mod h1:lnTiLA8Wa4RWRcIUkrtSVa5nRhsEGBg48fD6rSs7xps=
github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/rogpeppe/go-internal v1.13.1 h1:KvO1DLK/DRN07sQ1LQKScxyZJuNnedQ5/wKSR38lUII=
github.com/rogpeppe/go-internal v1.13.1/go.mod h1:uMEvuHeurkdAXX61udpOXGD/AzZDWNMNyH2VO9fmH0o=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
go.opentelemetry.io/auto/sdk v1.1.0 h1:cH53jehLUN6UFLY71z+NDOiNJqDdPRaXzTel0sJySYA=
go.opentelemetry.io/auto/sdk v1.1.0/go.mod h1:3wSPjt5PWp2RhlCcmmOial7AvC4DQqZb7a7wCow3W8A=
go.opentelemetry.io/collector/pdata v1.24.0 h1:D6j92eAzmAbQgivNBUnt8r9juOl8ugb+ihYynoFZIEg=
go.opentelemetry.io/collector/pdata v1.24.0/go.mod h1:cf3/W9E/uIvPS4MR26SnMFJhraUCattzzM6qusuONuc=
go.opentelemetry.io/otel/sdk v1.31.0 h1:xLY3abVHYZ5HSfOg3l2E5LUj2Cwva5Y7yGxnSW9H5Gk=
go.opentelemetry.io/otel/sdk v1.31.0/go.mod h1:TfRbMdhvxIIr/B2N2LQW2S5v9m3gOQ/08KsbbO5BPT0=
go.opentelemetry.io/otel/sdk/metric v1.31.0 h1:i9hxxLJF/9kkvfHppyLL55aW7iIJz4JjxTeYusH7zMc=
go.opentelemetry.io/otel/sdk/metric v1.31.0/go.mod h1:CRInTMVvNhUKgSAMbKyTMxqOBC0zgyxzW55lZzX43Y8=
go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
golang.org/x/net v0.34.0 h1:Mb7Mrk043xzHgnRM88suvJFwzVrRfHEHJEl5/71CKw0=
golang.org/x/net v0.34.0/go.mod h1:di0qlW3YNM5oh6GqDGQr92MyTozJPmybPK4Ev/Gm31k=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.29.0 h1:TPYlXGxvx1MGTn2GiZDhnjPA9wZzZeGKHHmKhHYvgaU=
golang.org/x/sys v0.29.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.21.0 h1:zyQAAkrwaneQ066sspRyJaG9VNi/YJ1NfzcGB3hZ/qo=
golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/genproto/googleapis/rpc v0.0.0-20250122153221-138b5a5a4fd4 h1:yrTuav+chrF0zF/joFGICKTzYv7mh/gr9AgEXrVU8ao=
google.golang.org/genproto/googleapis/rpc v0.0.0-20250122153221-138b5a5a4fd4/go.mod h1:+2Yz8+CLJbIfL9z73EW45avw8Lmge3xVElCP9zEKi50=
google.golang.org/grpc v1.69.4 h1:MF5TftSMkd8GLw/m0KM6V8CMOCY6NZ1NQDPGFgbTt4A=
google.golang.org/grpc v1.69.4/go.mod h1:vyjdE6jLBI76dgpDojsFGNaHlxdjXN9ghpnd2o7JGZ4=
google.golang.org/protobuf v1.36.3 h1:82DV7MYdb8anAVi3qge1wSnMDrnKK7ebr+I0hHRN1BU=
google.golang.org/protobuf v1.36.3/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

View File

@@ -0,0 +1,189 @@
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package telemetry // import "go.opentelemetry.io/otel/trace/internal/telemetry"
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"io"
)
// Traces represents the traces data that can be stored in a persistent storage,
// OR can be embedded by other protocols that transfer OTLP traces data but do
// not implement the OTLP protocol.
//
// The main difference between this message and collector protocol is that
// in this message there will not be any "control" or "metadata" specific to
// OTLP protocol.
//
// When new fields are added into this message, the OTLP request MUST be updated
// as well.
type Traces struct {
// An array of ResourceSpans.
// For data coming from a single resource this array will typically contain
// one element. Intermediary nodes that receive data from multiple origins
// typically batch the data before forwarding further and in that case this
// array will contain multiple elements.
ResourceSpans []*ResourceSpans `json:"resourceSpans,omitempty"`
}
// UnmarshalJSON decodes the OTLP formatted JSON contained in data into td.
func (td *Traces) UnmarshalJSON(data []byte) error {
decoder := json.NewDecoder(bytes.NewReader(data))
t, err := decoder.Token()
if err != nil {
return err
}
if t != json.Delim('{') {
return errors.New("invalid TracesData type")
}
for decoder.More() {
keyIface, err := decoder.Token()
if err != nil {
if errors.Is(err, io.EOF) {
// Empty.
return nil
}
return err
}
key, ok := keyIface.(string)
if !ok {
return fmt.Errorf("invalid TracesData field: %#v", keyIface)
}
switch key {
case "resourceSpans", "resource_spans":
err = decoder.Decode(&td.ResourceSpans)
default:
// Skip unknown.
}
if err != nil {
return err
}
}
return nil
}
// A collection of ScopeSpans from a Resource.
type ResourceSpans struct {
// The resource for the spans in this message.
// If this field is not set then no resource info is known.
Resource Resource `json:"resource"`
// A list of ScopeSpans that originate from a resource.
ScopeSpans []*ScopeSpans `json:"scopeSpans,omitempty"`
// This schema_url applies to the data in the "resource" field. It does not apply
// to the data in the "scope_spans" field which have their own schema_url field.
SchemaURL string `json:"schemaUrl,omitempty"`
}
// UnmarshalJSON decodes the OTLP formatted JSON contained in data into rs.
func (rs *ResourceSpans) UnmarshalJSON(data []byte) error {
decoder := json.NewDecoder(bytes.NewReader(data))
t, err := decoder.Token()
if err != nil {
return err
}
if t != json.Delim('{') {
return errors.New("invalid ResourceSpans type")
}
for decoder.More() {
keyIface, err := decoder.Token()
if err != nil {
if errors.Is(err, io.EOF) {
// Empty.
return nil
}
return err
}
key, ok := keyIface.(string)
if !ok {
return fmt.Errorf("invalid ResourceSpans field: %#v", keyIface)
}
switch key {
case "resource":
err = decoder.Decode(&rs.Resource)
case "scopeSpans", "scope_spans":
err = decoder.Decode(&rs.ScopeSpans)
case "schemaUrl", "schema_url":
err = decoder.Decode(&rs.SchemaURL)
default:
// Skip unknown.
}
if err != nil {
return err
}
}
return nil
}
// A collection of Spans produced by an InstrumentationScope.
type ScopeSpans struct {
// The instrumentation scope information for the spans in this message.
// Semantically when InstrumentationScope isn't set, it is equivalent with
// an empty instrumentation scope name (unknown).
Scope *Scope `json:"scope"`
// A list of Spans that originate from an instrumentation scope.
Spans []*Span `json:"spans,omitempty"`
// The Schema URL, if known. This is the identifier of the Schema that the span data
// is recorded in. To learn more about Schema URL see
// https://opentelemetry.io/docs/specs/otel/schemas/#schema-url
// This schema_url applies to all spans and span events in the "spans" field.
SchemaURL string `json:"schemaUrl,omitempty"`
}
// UnmarshalJSON decodes the OTLP formatted JSON contained in data into ss.
func (ss *ScopeSpans) UnmarshalJSON(data []byte) error {
decoder := json.NewDecoder(bytes.NewReader(data))
t, err := decoder.Token()
if err != nil {
return err
}
if t != json.Delim('{') {
return errors.New("invalid ScopeSpans type")
}
for decoder.More() {
keyIface, err := decoder.Token()
if err != nil {
if errors.Is(err, io.EOF) {
// Empty.
return nil
}
return err
}
key, ok := keyIface.(string)
if !ok {
return fmt.Errorf("invalid ScopeSpans field: %#v", keyIface)
}
switch key {
case "scope":
err = decoder.Decode(&ss.Scope)
case "spans":
err = decoder.Decode(&ss.Spans)
case "schemaUrl", "schema_url":
err = decoder.Decode(&ss.SchemaURL)
default:
// Skip unknown.
}
if err != nil {
return err
}
}
return nil
}

View File

@@ -0,0 +1,145 @@
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package telemetry
import (
"testing"
"time"
)
func TestTracesEncoding(t *testing.T) {
traces := &Traces{
ResourceSpans: []*ResourceSpans{{}},
}
t.Run("CamelCase", runJSONEncodingTests(traces, []byte(`{
"resourceSpans": [
{
"resource": {}
}
]
}`)))
t.Run("SnakeCase/Unmarshal", runJSONUnmarshalTest(traces, []byte(`{
"resource_spans": [
{
"resource": {}
}
]
}`)))
}
func TestResourceSpansEncoding(t *testing.T) {
rs := &ResourceSpans{
Resource: Resource{
Attrs: []Attr{String("key", "val")},
},
ScopeSpans: []*ScopeSpans{{}},
SchemaURL: schema100,
}
t.Run("CamelCase", runJSONEncodingTests(rs, []byte(`{
"resource": {
"attributes": [
{
"key": "key",
"value": {
"stringValue": "val"
}
}
]
},
"scopeSpans": [
{
"scope": null
}
],
"schemaUrl": "http://go.opentelemetry.io/schema/v1.0.0"
}`)))
t.Run("SnakeCase/Unmarshal", runJSONUnmarshalTest(rs, []byte(`{
"resource": {
"attributes": [
{
"key": "key",
"value": {
"string_value": "val"
}
}
]
},
"scope_spans": [
{
"scope": null
}
],
"schema_url": "http://go.opentelemetry.io/schema/v1.0.0"
}`)))
}
func TestScopeSpansEncoding(t *testing.T) {
ss := &ScopeSpans{
Scope: &Scope{Name: "scope"},
Spans: []*Span{{
TraceID: [16]byte{0x1},
SpanID: [8]byte{0x2},
Name: "A",
StartTime: y2k,
EndTime: y2k.Add(time.Second),
}, {
TraceID: [16]byte{0x1},
SpanID: [8]byte{0x3},
Name: "B",
StartTime: y2k.Add(time.Second),
EndTime: y2k.Add(2 * time.Second),
}},
SchemaURL: schema100,
}
t.Run("CamelCase", runJSONEncodingTests(ss, []byte(`{
"scope": {
"name": "scope"
},
"spans": [
{
"traceId": "01000000000000000000000000000000",
"spanId": "0200000000000000",
"name": "A",
"startTimeUnixNano": 946684800000000000,
"endTimeUnixNano": 946684801000000000
},
{
"traceId": "01000000000000000000000000000000",
"spanId": "0300000000000000",
"name": "B",
"startTimeUnixNano": 946684801000000000,
"endTimeUnixNano": 946684802000000000
}
],
"schemaUrl": "http://go.opentelemetry.io/schema/v1.0.0"
}`)))
t.Run("SnakeCase/Unmarshal", runJSONUnmarshalTest(ss, []byte(`{
"scope": {
"name": "scope"
},
"spans": [
{
"trace_id": "01000000000000000000000000000000",
"span_id": "0200000000000000",
"name": "A",
"start_time_unix_nano": 946684800000000000,
"end_time_unix_nano": 946684801000000000
},
{
"trace_id": "01000000000000000000000000000000",
"span_id": "0300000000000000",
"name": "B",
"start_time_unix_nano": 946684801000000000,
"end_time_unix_nano": 946684802000000000
}
],
"schema_url": "http://go.opentelemetry.io/schema/v1.0.0"
}`)))
}

View File

@@ -0,0 +1,453 @@
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package telemetry // import "go.opentelemetry.io/otel/trace/internal/telemetry"
import (
"bytes"
"cmp"
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"io"
"math"
"slices"
"strconv"
"unsafe"
)
// A Value represents a structured value.
// A zero value is valid and represents an empty value.
type Value struct {
// Ensure forward compatibility by explicitly making this not comparable.
noCmp [0]func() //nolint: unused // This is indeed used.
// num holds the value for Int64, Float64, and Bool. It holds the length
// for String, Bytes, Slice, Map.
num uint64
// any holds either the KindBool, KindInt64, KindFloat64, stringptr,
// bytesptr, sliceptr, or mapptr. If KindBool, KindInt64, or KindFloat64
// then the value of Value is in num as described above. Otherwise, it
// contains the value wrapped in the appropriate type.
any any
}
type (
// sliceptr represents a value in Value.any for KindString Values.
stringptr *byte
// bytesptr represents a value in Value.any for KindBytes Values.
bytesptr *byte
// sliceptr represents a value in Value.any for KindSlice Values.
sliceptr *Value
// mapptr represents a value in Value.any for KindMap Values.
mapptr *Attr
)
// ValueKind is the kind of a [Value].
type ValueKind int
// ValueKind values.
const (
ValueKindEmpty ValueKind = iota
ValueKindBool
ValueKindFloat64
ValueKindInt64
ValueKindString
ValueKindBytes
ValueKindSlice
ValueKindMap
)
var valueKindStrings = []string{
"Empty",
"Bool",
"Float64",
"Int64",
"String",
"Bytes",
"Slice",
"Map",
}
func (k ValueKind) String() string {
if k >= 0 && int(k) < len(valueKindStrings) {
return valueKindStrings[k]
}
return "<unknown telemetry.ValueKind>"
}
// StringValue returns a new [Value] for a string.
func StringValue(v string) Value {
return Value{
num: uint64(len(v)),
any: stringptr(unsafe.StringData(v)),
}
}
// IntValue returns a [Value] for an int.
func IntValue(v int) Value { return Int64Value(int64(v)) }
// Int64Value returns a [Value] for an int64.
func Int64Value(v int64) Value {
return Value{
num: uint64(v), // nolint: gosec // Store raw bytes.
any: ValueKindInt64,
}
}
// Float64Value returns a [Value] for a float64.
func Float64Value(v float64) Value {
return Value{num: math.Float64bits(v), any: ValueKindFloat64}
}
// BoolValue returns a [Value] for a bool.
func BoolValue(v bool) Value { //nolint:revive // Not a control flag.
var n uint64
if v {
n = 1
}
return Value{num: n, any: ValueKindBool}
}
// BytesValue returns a [Value] for a byte slice. The passed slice must not be
// changed after it is passed.
func BytesValue(v []byte) Value {
return Value{
num: uint64(len(v)),
any: bytesptr(unsafe.SliceData(v)),
}
}
// SliceValue returns a [Value] for a slice of [Value]. The passed slice must
// not be changed after it is passed.
func SliceValue(vs ...Value) Value {
return Value{
num: uint64(len(vs)),
any: sliceptr(unsafe.SliceData(vs)),
}
}
// MapValue returns a new [Value] for a slice of key-value pairs. The passed
// slice must not be changed after it is passed.
func MapValue(kvs ...Attr) Value {
return Value{
num: uint64(len(kvs)),
any: mapptr(unsafe.SliceData(kvs)),
}
}
// AsString returns the value held by v as a string.
func (v Value) AsString() string {
if sp, ok := v.any.(stringptr); ok {
return unsafe.String(sp, v.num)
}
// TODO: error handle
return ""
}
// asString returns the value held by v as a string. It will panic if the Value
// is not KindString.
func (v Value) asString() string {
return unsafe.String(v.any.(stringptr), v.num)
}
// AsInt64 returns the value held by v as an int64.
func (v Value) AsInt64() int64 {
if v.Kind() != ValueKindInt64 {
// TODO: error handle
return 0
}
return v.asInt64()
}
// asInt64 returns the value held by v as an int64. If v is not of KindInt64,
// this will return garbage.
func (v Value) asInt64() int64 {
// Assumes v.num was a valid int64 (overflow not checked).
return int64(v.num) // nolint: gosec
}
// AsBool returns the value held by v as a bool.
func (v Value) AsBool() bool {
if v.Kind() != ValueKindBool {
// TODO: error handle
return false
}
return v.asBool()
}
// asBool returns the value held by v as a bool. If v is not of KindBool, this
// will return garbage.
func (v Value) asBool() bool { return v.num == 1 }
// AsFloat64 returns the value held by v as a float64.
func (v Value) AsFloat64() float64 {
if v.Kind() != ValueKindFloat64 {
// TODO: error handle
return 0
}
return v.asFloat64()
}
// asFloat64 returns the value held by v as a float64. If v is not of
// KindFloat64, this will return garbage.
func (v Value) asFloat64() float64 { return math.Float64frombits(v.num) }
// AsBytes returns the value held by v as a []byte.
func (v Value) AsBytes() []byte {
if sp, ok := v.any.(bytesptr); ok {
return unsafe.Slice((*byte)(sp), v.num)
}
// TODO: error handle
return nil
}
// asBytes returns the value held by v as a []byte. It will panic if the Value
// is not KindBytes.
func (v Value) asBytes() []byte {
return unsafe.Slice((*byte)(v.any.(bytesptr)), v.num)
}
// AsSlice returns the value held by v as a []Value.
func (v Value) AsSlice() []Value {
if sp, ok := v.any.(sliceptr); ok {
return unsafe.Slice((*Value)(sp), v.num)
}
// TODO: error handle
return nil
}
// asSlice returns the value held by v as a []Value. It will panic if the Value
// is not KindSlice.
func (v Value) asSlice() []Value {
return unsafe.Slice((*Value)(v.any.(sliceptr)), v.num)
}
// AsMap returns the value held by v as a []Attr.
func (v Value) AsMap() []Attr {
if sp, ok := v.any.(mapptr); ok {
return unsafe.Slice((*Attr)(sp), v.num)
}
// TODO: error handle
return nil
}
// asMap returns the value held by v as a []Attr. It will panic if the
// Value is not KindMap.
func (v Value) asMap() []Attr {
return unsafe.Slice((*Attr)(v.any.(mapptr)), v.num)
}
// Kind returns the Kind of v.
func (v Value) Kind() ValueKind {
switch x := v.any.(type) {
case ValueKind:
return x
case stringptr:
return ValueKindString
case bytesptr:
return ValueKindBytes
case sliceptr:
return ValueKindSlice
case mapptr:
return ValueKindMap
default:
return ValueKindEmpty
}
}
// Empty returns if v does not hold any value.
func (v Value) Empty() bool { return v.Kind() == ValueKindEmpty }
// Equal returns if v is equal to w.
func (v Value) Equal(w Value) bool {
k1 := v.Kind()
k2 := w.Kind()
if k1 != k2 {
return false
}
switch k1 {
case ValueKindInt64, ValueKindBool:
return v.num == w.num
case ValueKindString:
return v.asString() == w.asString()
case ValueKindFloat64:
return v.asFloat64() == w.asFloat64()
case ValueKindSlice:
return slices.EqualFunc(v.asSlice(), w.asSlice(), Value.Equal)
case ValueKindMap:
sv := sortMap(v.asMap())
sw := sortMap(w.asMap())
return slices.EqualFunc(sv, sw, Attr.Equal)
case ValueKindBytes:
return bytes.Equal(v.asBytes(), w.asBytes())
case ValueKindEmpty:
return true
default:
// TODO: error handle
return false
}
}
func sortMap(m []Attr) []Attr {
sm := make([]Attr, len(m))
copy(sm, m)
slices.SortFunc(sm, func(a, b Attr) int {
return cmp.Compare(a.Key, b.Key)
})
return sm
}
// String returns Value's value as a string, formatted like [fmt.Sprint].
//
// The returned string is meant for debugging;
// the string representation is not stable.
func (v Value) String() string {
switch v.Kind() {
case ValueKindString:
return v.asString()
case ValueKindInt64:
// Assumes v.num was a valid int64 (overflow not checked).
return strconv.FormatInt(int64(v.num), 10) // nolint: gosec
case ValueKindFloat64:
return strconv.FormatFloat(v.asFloat64(), 'g', -1, 64)
case ValueKindBool:
return strconv.FormatBool(v.asBool())
case ValueKindBytes:
return fmt.Sprint(v.asBytes())
case ValueKindMap:
return fmt.Sprint(v.asMap())
case ValueKindSlice:
return fmt.Sprint(v.asSlice())
case ValueKindEmpty:
return "<nil>"
default:
// Try to handle this as gracefully as possible.
//
// Don't panic here. The goal here is to have developers find this
// first if a slog.Kind is is not handled. It is
// preferable to have user's open issue asking why their attributes
// have a "unhandled: " prefix than say that their code is panicking.
return fmt.Sprintf("<unhandled telemetry.ValueKind: %s>", v.Kind())
}
}
// MarshalJSON encodes v into OTLP formatted JSON.
func (v *Value) MarshalJSON() ([]byte, error) {
switch v.Kind() {
case ValueKindString:
return json.Marshal(struct {
Value string `json:"stringValue"`
}{v.asString()})
case ValueKindInt64:
return json.Marshal(struct {
Value string `json:"intValue"`
}{strconv.FormatInt(int64(v.num), 10)}) // nolint: gosec // From raw bytes.
case ValueKindFloat64:
return json.Marshal(struct {
Value float64 `json:"doubleValue"`
}{v.asFloat64()})
case ValueKindBool:
return json.Marshal(struct {
Value bool `json:"boolValue"`
}{v.asBool()})
case ValueKindBytes:
return json.Marshal(struct {
Value []byte `json:"bytesValue"`
}{v.asBytes()})
case ValueKindMap:
return json.Marshal(struct {
Value struct {
Values []Attr `json:"values"`
} `json:"kvlistValue"`
}{struct {
Values []Attr `json:"values"`
}{v.asMap()}})
case ValueKindSlice:
return json.Marshal(struct {
Value struct {
Values []Value `json:"values"`
} `json:"arrayValue"`
}{struct {
Values []Value `json:"values"`
}{v.asSlice()}})
case ValueKindEmpty:
return nil, nil
default:
return nil, fmt.Errorf("unknown Value kind: %s", v.Kind().String())
}
}
// UnmarshalJSON decodes the OTLP formatted JSON contained in data into v.
func (v *Value) UnmarshalJSON(data []byte) error {
decoder := json.NewDecoder(bytes.NewReader(data))
t, err := decoder.Token()
if err != nil {
return err
}
if t != json.Delim('{') {
return errors.New("invalid Value type")
}
for decoder.More() {
keyIface, err := decoder.Token()
if err != nil {
if errors.Is(err, io.EOF) {
// Empty.
return nil
}
return err
}
key, ok := keyIface.(string)
if !ok {
return fmt.Errorf("invalid Value key: %#v", keyIface)
}
switch key {
case "stringValue", "string_value":
var val string
err = decoder.Decode(&val)
*v = StringValue(val)
case "boolValue", "bool_value":
var val bool
err = decoder.Decode(&val)
*v = BoolValue(val)
case "intValue", "int_value":
var val protoInt64
err = decoder.Decode(&val)
*v = Int64Value(val.Int64())
case "doubleValue", "double_value":
var val float64
err = decoder.Decode(&val)
*v = Float64Value(val)
case "bytesValue", "bytes_value":
var val64 string
if err := decoder.Decode(&val64); err != nil {
return err
}
var val []byte
val, err = base64.StdEncoding.DecodeString(val64)
*v = BytesValue(val)
case "arrayValue", "array_value":
var val struct{ Values []Value }
err = decoder.Decode(&val)
*v = SliceValue(val.Values...)
case "kvlistValue", "kvlist_value":
var val struct{ Values []Attr }
err = decoder.Decode(&val)
*v = MapValue(val.Values...)
default:
// Skip unknown.
continue
}
// Use first valid. Ignore the rest.
return err
}
// Only unknown fields. Return nil without unmarshaling any value.
return nil
}

View File

@@ -82,4 +82,22 @@ func (noopSpan) AddLink(Link) {}
func (noopSpan) SetName(string) {}
// TracerProvider returns a no-op TracerProvider.
func (noopSpan) TracerProvider() TracerProvider { return noopTracerProvider{} }
func (s noopSpan) TracerProvider() TracerProvider {
return s.tracerProvider(autoInstEnabled)
}
// autoInstEnabled defines if the auto-instrumentation SDK is enabled.
//
// The auto-instrumentation is expected to overwrite this value to true when it
// attaches to the process.
var autoInstEnabled = new(bool)
// tracerProvider return a noopTracerProvider if autoEnabled is false,
// otherwise it will return a TracerProvider from the sdk package used in
// auto-instrumentation.
func (noopSpan) tracerProvider(autoEnabled *bool) TracerProvider {
if *autoEnabled {
return newAutoTracerProvider()
}
return noopTracerProvider{}
}

View File

@@ -40,3 +40,4 @@ module-sets:
- go.opentelemetry.io/otel/schema
excluded-modules:
- go.opentelemetry.io/otel/internal/tools
- go.opentelemetry.io/otel/trace/internal/telemetry/test