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Update tracing dependencies

This commit is contained in:
Ludovic Fernandez 2019-04-05 11:58:06 +02:00 committed by Traefiker Bot
parent 4919b638f9
commit ed12366d52
98 changed files with 3371 additions and 2808 deletions

View file

@ -51,15 +51,17 @@ type Extractor interface {
Extract(carrier interface{}) (SpanContext, error)
}
type textMapPropagator struct {
// TextMapPropagator is a combined Injector and Extractor for TextMap format
type TextMapPropagator struct {
headerKeys *HeadersConfig
metrics Metrics
encodeValue func(string) string
decodeValue func(string) string
}
func newTextMapPropagator(headerKeys *HeadersConfig, metrics Metrics) *textMapPropagator {
return &textMapPropagator{
// NewTextMapPropagator creates a combined Injector and Extractor for TextMap format
func NewTextMapPropagator(headerKeys *HeadersConfig, metrics Metrics) *TextMapPropagator {
return &TextMapPropagator{
headerKeys: headerKeys,
metrics: metrics,
encodeValue: func(val string) string {
@ -71,8 +73,9 @@ func newTextMapPropagator(headerKeys *HeadersConfig, metrics Metrics) *textMapPr
}
}
func newHTTPHeaderPropagator(headerKeys *HeadersConfig, metrics Metrics) *textMapPropagator {
return &textMapPropagator{
// NewHTTPHeaderPropagator creates a combined Injector and Extractor for HTTPHeaders format
func NewHTTPHeaderPropagator(headerKeys *HeadersConfig, metrics Metrics) *TextMapPropagator {
return &TextMapPropagator{
headerKeys: headerKeys,
metrics: metrics,
encodeValue: func(val string) string {
@ -88,19 +91,22 @@ func newHTTPHeaderPropagator(headerKeys *HeadersConfig, metrics Metrics) *textMa
}
}
type binaryPropagator struct {
// BinaryPropagator is a combined Injector and Extractor for Binary format
type BinaryPropagator struct {
tracer *Tracer
buffers sync.Pool
}
func newBinaryPropagator(tracer *Tracer) *binaryPropagator {
return &binaryPropagator{
// NewBinaryPropagator creates a combined Injector and Extractor for Binary format
func NewBinaryPropagator(tracer *Tracer) *BinaryPropagator {
return &BinaryPropagator{
tracer: tracer,
buffers: sync.Pool{New: func() interface{} { return &bytes.Buffer{} }},
}
}
func (p *textMapPropagator) Inject(
// Inject implements Injector of TextMapPropagator
func (p *TextMapPropagator) Inject(
sc SpanContext,
abstractCarrier interface{},
) error {
@ -121,7 +127,8 @@ func (p *textMapPropagator) Inject(
return nil
}
func (p *textMapPropagator) Extract(abstractCarrier interface{}) (SpanContext, error) {
// Extract implements Extractor of TextMapPropagator
func (p *TextMapPropagator) Extract(abstractCarrier interface{}) (SpanContext, error) {
textMapReader, ok := abstractCarrier.(opentracing.TextMapReader)
if !ok {
return emptyContext, opentracing.ErrInvalidCarrier
@ -166,7 +173,8 @@ func (p *textMapPropagator) Extract(abstractCarrier interface{}) (SpanContext, e
return ctx, nil
}
func (p *binaryPropagator) Inject(
// Inject implements Injector of BinaryPropagator
func (p *BinaryPropagator) Inject(
sc SpanContext,
abstractCarrier interface{},
) error {
@ -207,7 +215,8 @@ func (p *binaryPropagator) Inject(
return nil
}
func (p *binaryPropagator) Extract(abstractCarrier interface{}) (SpanContext, error) {
// Extract implements Extractor of BinaryPropagator
func (p *BinaryPropagator) Extract(abstractCarrier interface{}) (SpanContext, error) {
carrier, ok := abstractCarrier.(io.Reader)
if !ok {
return emptyContext, opentracing.ErrInvalidCarrier
@ -269,7 +278,7 @@ func (p *binaryPropagator) Extract(abstractCarrier interface{}) (SpanContext, er
// is converted to map[string]string { "key1" : "value1",
// "key2" : "value2",
// "key3" : "value3" }
func (p *textMapPropagator) parseCommaSeparatedMap(value string) map[string]string {
func (p *TextMapPropagator) parseCommaSeparatedMap(value string) map[string]string {
baggage := make(map[string]string)
value, err := url.QueryUnescape(value)
if err != nil {
@ -289,12 +298,12 @@ func (p *textMapPropagator) parseCommaSeparatedMap(value string) map[string]stri
// Converts a baggage item key into an http header format,
// by prepending TraceBaggageHeaderPrefix and encoding the key string
func (p *textMapPropagator) addBaggageKeyPrefix(key string) string {
func (p *TextMapPropagator) addBaggageKeyPrefix(key string) string {
// TODO encodeBaggageKeyAsHeader add caching and escaping
return fmt.Sprintf("%v%v", p.headerKeys.TraceBaggageHeaderPrefix, key)
}
func (p *textMapPropagator) removeBaggageKeyPrefix(key string) string {
func (p *TextMapPropagator) removeBaggageKeyPrefix(key string) string {
// TODO decodeBaggageHeaderKey add caching and escaping
return key[len(p.headerKeys.TraceBaggageHeaderPrefix):]
}