/
span_entitiess.go
265 lines (220 loc) 路 6.46 KB
/
span_entitiess.go
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package traces
import (
"encoding/json"
"fmt"
"strconv"
"time"
"github.com/kubeshop/tracetest/server/pkg/timing"
"github.com/kubeshop/tracetest/server/test/trigger"
"go.opentelemetry.io/otel/trace"
)
const (
TracetestMetadataFieldStartTime string = "tracetest.span.start_time"
TracetestMetadataFieldEndTime string = "tracetest.span.end_time"
TracetestMetadataFieldDuration string = "tracetest.span.duration"
TracetestMetadataFieldType string = "tracetest.span.type"
TracetestMetadataFieldName string = "tracetest.span.name"
TracetestMetadataFieldParentID string = "tracetest.span.parent_id"
TracetestMetadataFieldKind string = "tracetest.span.kind"
TracetestMetadataFieldStatusCode string = "tracetest.span.status_code"
TracetestMetadataFieldStatusDescription string = "tracetest.span.status_description"
)
type Attributes map[string]string
func (a Attributes) Get(key string) string {
if v, ok := a[key]; ok {
return v
}
return ""
}
func (a Attributes) SetPointerValue(key string, value *string) {
if value != nil {
a[key] = *value
}
}
type Spans []Span
func (s Spans) ForEach(fn func(ix int, _ Span) bool) Spans {
for i, span := range s {
doNext := fn(i, span)
if !doNext {
break
}
}
return s
}
func (s Spans) OrEmpty(fn func()) Spans {
if len(s) == 0 {
fn()
}
return s
}
type SpanKind string
var (
SpanKindClient SpanKind = "client"
SpanKindServer SpanKind = "server"
SpanKindConsumer SpanKind = "consumer"
SpanKindProducer SpanKind = "producer"
SpanKindInternal SpanKind = "internal"
SpanKindUnespecified SpanKind = "unespecified"
)
type Span struct {
ID trace.SpanID
Name string
StartTime time.Time
EndTime time.Time
Attributes Attributes
Kind SpanKind
Events []SpanEvent
Status *SpanStatus
Parent *Span `json:"-"`
Children []*Span `json:"-"`
}
type SpanStatus struct {
Code string
Description string
}
func (s *Span) injectEventsIntoAttributes() {
if s.Events == nil {
s.Events = make([]SpanEvent, 0)
}
eventsJson, _ := json.Marshal(s.Events)
s.Attributes["span.events"] = string(eventsJson)
}
type SpanEvent struct {
Name string `json:"name"`
Timestamp time.Time `json:"timestamp"`
Attributes Attributes `json:"attributes"`
}
type encodedSpan struct {
ID string
Name string
StartTime string
EndTime string
Attributes Attributes
Children []encodedSpan
}
func (s Span) IsZero() bool {
return !s.ID.IsValid()
}
func (s Span) MarshalJSON() ([]byte, error) {
enc := encodeSpan(s)
return json.Marshal(&enc)
}
func encodeSpan(s Span) encodedSpan {
return encodedSpan{
ID: s.ID.String(),
Name: s.Name,
StartTime: strconv.FormatInt(s.StartTime.UnixMilli(), 10),
EndTime: strconv.FormatInt(s.EndTime.UnixMilli(), 10),
Attributes: s.Attributes,
Children: encodeChildren(s.Children),
}
}
func encodeChildren(children []*Span) []encodedSpan {
res := make([]encodedSpan, len(children))
for i, c := range children {
res[i] = encodeSpan(*c)
}
return res
}
func (s *Span) UnmarshalJSON(data []byte) error {
aux := encodedSpan{}
if err := json.Unmarshal(data, &aux); err != nil {
return fmt.Errorf("unmarshal span: %w", err)
}
return s.decodeSpan(aux)
}
func (s *Span) decodeSpan(aux encodedSpan) error {
sid, err := trace.SpanIDFromHex(aux.ID)
if err != nil {
return fmt.Errorf("unmarshal span: %w", err)
}
children, err := decodeChildren(s, aux.Children, getCache())
if err != nil {
return fmt.Errorf("unmarshal span: %w", err)
}
startTime, err := getTimeFromString(aux.StartTime)
if err != nil {
return fmt.Errorf("unmarshal span: %w", err)
}
endTime, err := getTimeFromString(aux.EndTime)
if err != nil {
return fmt.Errorf("unmarshal span: %w", err)
}
s.ID = sid
s.Name = aux.Name
s.StartTime = startTime.UTC()
s.EndTime = endTime.UTC()
s.Attributes = aux.Attributes
s.Children = children
return nil
}
func getTimeFromString(value string) (time.Time, error) {
parsedValue, err := strconv.Atoi(value)
if err != nil {
// Maybe it is in RFC3339 format. Convert it for compatibility sake
output, err := time.Parse(time.RFC3339, value)
if err != nil {
return time.Time{}, fmt.Errorf("could not convert string (%s) to time: %w", value, err)
}
return output, nil
}
return timing.ParseUnix(int64(parsedValue)), nil
}
func decodeChildren(parent *Span, children []encodedSpan, cache spanCache) ([]*Span, error) {
if len(children) == 0 {
return nil, nil
}
res := make([]*Span, len(children))
for i, c := range children {
if span, ok := cache.Get(c.ID); ok {
res[i] = span
continue
}
span := &Span{
Parent: parent,
}
if err := span.decodeSpan(c); err != nil {
return nil, fmt.Errorf("unmarshal children: %w", err)
}
children, err := decodeChildren(span, c.Children, cache)
if err != nil {
return nil, fmt.Errorf("unmarshal children: %w", err)
}
span.Children = children
res[i] = span
cache.Set(span.ID.String(), span)
}
return res, nil
}
func (span Span) setMetadataAttributes() Span {
if span.Attributes == nil {
span.Attributes = Attributes{}
}
span.Attributes[TracetestMetadataFieldName] = span.Name
span.Attributes[TracetestMetadataFieldType] = spanType(span.Attributes)
span.Attributes[TracetestMetadataFieldDuration] = spanDuration(span)
span.Attributes[TracetestMetadataFieldStartTime] = strconv.FormatInt(span.StartTime.UTC().UnixNano(), 10)
span.Attributes[TracetestMetadataFieldEndTime] = strconv.FormatInt(span.EndTime.UTC().UnixNano(), 10)
if span.Status != nil {
span.Attributes[TracetestMetadataFieldStatusCode] = span.Status.Code
span.Attributes[TracetestMetadataFieldStatusDescription] = span.Status.Description
}
return span
}
func (span Span) setTriggerResultAttributes(result trigger.TriggerResult) Span {
switch result.Type {
case trigger.TriggerTypeHTTP:
resp := result.HTTP
jsonheaders, _ := json.Marshal(resp.Headers)
span.Attributes["tracetest.response.status"] = strconv.Itoa(resp.StatusCode)
span.Attributes["tracetest.response.body"] = resp.Body
span.Attributes["tracetest.response.headers"] = string(jsonheaders)
case trigger.TriggerTypeGRPC:
resp := result.GRPC
jsonheaders, _ := json.Marshal(resp.Metadata)
span.Attributes["tracetest.response.status"] = strconv.Itoa(resp.StatusCode)
span.Attributes["tracetest.response.body"] = resp.Body
span.Attributes["tracetest.response.headers"] = string(jsonheaders)
}
return span
}