Merge pull request #115 from elisasre/tracepropagation

add carrier headers to http requests

go.mod

@@ -20,6 +20,7 @@ require (
 	github.com/rs/zerolog v1.31.0
 	github.com/spf13/viper v1.17.0
 	github.com/stretchr/testify v1.8.4
+	go.opentelemetry.io/otel v1.19.0
 	gopkg.in/yaml.v2 v2.4.0
 	gorm.io/gorm v1.25.5
 )
@@ -210,6 +211,7 @@ require (
 	github.com/yuin/gopher-lua v1.1.0 // indirect
 	gitlab.com/bosi/decorder v0.2.3 // indirect
 	go.opencensus.io v0.24.0 // indirect
+	go.opentelemetry.io/otel/trace v1.19.0 // indirect
 	go.tmz.dev/musttag v0.7.0 // indirect
 	go.uber.org/atomic v1.9.0 // indirect
 	go.uber.org/multierr v1.9.0 // indirect

go.sum

@@ -235,6 +235,8 @@ github.com/go-logfmt/logfmt v0.5.0/go.mod h1:wCYkCAKZfumFQihp8CzCvQ3paCTfi41vtzG
 github.com/go-logr/logr v1.2.0/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
 github.com/go-logr/logr v1.2.4 h1:g01GSCwiDw2xSZfjJ2/T9M+S6pFdcNtFYsp+Y43HYDQ=
 github.com/go-logr/logr v1.2.4/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
+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/go-playground/assert/v2 v2.2.0 h1:JvknZsQTYeFEAhQwI4qEt9cyV5ONwRHC+lYKSsYSR8s=
 github.com/go-playground/assert/v2 v2.2.0/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
 github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/oXslEjJA=
@@ -761,6 +763,12 @@ go.opencensus.io v0.22.5/go.mod h1:5pWMHQbX5EPX2/62yrJeAkowc+lfs/XD7Uxpq3pI6kk=
 go.opencensus.io v0.23.0/go.mod h1:XItmlyltB5F7CS4xOC1DcqMoFqwtC6OG2xF7mCv7P7E=
 go.opencensus.io v0.24.0 h1:y73uSU6J157QMP2kn2r30vwW1A2W2WFwSCGnAVxeaD0=
 go.opencensus.io v0.24.0/go.mod h1:vNK8G9p7aAivkbmorf4v+7Hgx+Zs0yY+0fOtgBfjQKo=
+go.opentelemetry.io/otel v1.19.0 h1:MuS/TNf4/j4IXsZuJegVzI1cwut7Qc00344rgH7p8bs=
+go.opentelemetry.io/otel v1.19.0/go.mod h1:i0QyjOq3UPoTzff0PJB2N66fb4S0+rSbSB15/oyH9fY=
+go.opentelemetry.io/otel/metric v1.19.0 h1:aTzpGtV0ar9wlV4Sna9sdJyII5jTVJEvKETPiOKwvpE=
+go.opentelemetry.io/otel/metric v1.19.0/go.mod h1:L5rUsV9kM1IxCj1MmSdS+JQAcVm319EUrDVLrt7jqt8=
+go.opentelemetry.io/otel/trace v1.19.0 h1:DFVQmlVbfVeOuBRrwdtaehRrWiL1JoVs9CPIQ1Dzxpg=
+go.opentelemetry.io/otel/trace v1.19.0/go.mod h1:mfaSyvGyEJEI0nyV2I4qhNQnbBOUUmYZpYojqMnX2vo=
 go.opentelemetry.io/proto/otlp v0.7.0/go.mod h1:PqfVotwruBrMGOCsRd/89rSnXhoiJIqeYNgFYFoEGnI=
 go.tmz.dev/musttag v0.7.0 h1:QfytzjTWGXZmChoX0L++7uQN+yRCPfyFm+whsM+lfGc=
 go.tmz.dev/musttag v0.7.0/go.mod h1:oTFPvgOkJmp5kYL02S8+jrH0eLrBIl57rzWeA26zDEM=

request.go

@@ -13,6 +13,7 @@ import (
 
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
+	"go.opentelemetry.io/otel/propagation"
 )
 
 func init() {
@@ -66,6 +67,12 @@ func MakeRequest(
 	if request.Unmarshaler == nil {
 		request.Unmarshaler = json.Unmarshal
 	}
+	propgator := propagation.NewCompositeTextMapPropagator(propagation.TraceContext{}, propagation.Baggage{})
+	carrier := propagation.MapCarrier{}
+	propgator.Inject(ctx, carrier)
+	for k, v := range carrier {
+		request.Headers[k] = v
+	}
 	err := SleepUntil(backoff, func() (bool, error) {
 		httpreq, err := http.NewRequest(request.Method, request.URL, nil)
 		if err != nil {