121 lines
3.1 KiB
Go
121 lines
3.1 KiB
Go
// Copyright The OpenTelemetry Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package propagation_test
|
|
|
|
import (
|
|
"context"
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/assert"
|
|
"github.com/stretchr/testify/require"
|
|
|
|
"go.opentelemetry.io/otel/propagation"
|
|
"go.opentelemetry.io/otel/trace"
|
|
)
|
|
|
|
const (
|
|
traceIDStr = "4bf92f3577b34da6a3ce929d0e0e4736"
|
|
spanIDStr = "00f067aa0ba902b7"
|
|
)
|
|
|
|
var (
|
|
traceID = mustTraceIDFromHex(traceIDStr)
|
|
spanID = mustSpanIDFromHex(spanIDStr)
|
|
)
|
|
|
|
func mustTraceIDFromHex(s string) (t trace.TraceID) {
|
|
var err error
|
|
t, err = trace.TraceIDFromHex(s)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return
|
|
}
|
|
|
|
func mustSpanIDFromHex(s string) (t trace.SpanID) {
|
|
var err error
|
|
t, err = trace.SpanIDFromHex(s)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return
|
|
}
|
|
|
|
type outOfThinAirPropagator struct {
|
|
t *testing.T
|
|
}
|
|
|
|
var _ propagation.TextMapPropagator = outOfThinAirPropagator{}
|
|
|
|
func (p outOfThinAirPropagator) Extract(ctx context.Context, carrier propagation.TextMapCarrier) context.Context {
|
|
sc := trace.SpanContext{
|
|
TraceID: traceID,
|
|
SpanID: spanID,
|
|
TraceFlags: 0,
|
|
}
|
|
require.True(p.t, sc.IsValid())
|
|
return trace.ContextWithRemoteSpanContext(ctx, sc)
|
|
}
|
|
|
|
func (outOfThinAirPropagator) Inject(context.Context, propagation.TextMapCarrier) {}
|
|
|
|
func (outOfThinAirPropagator) Fields() []string {
|
|
return nil
|
|
}
|
|
|
|
type nilCarrier struct{}
|
|
|
|
var _ propagation.TextMapCarrier = nilCarrier{}
|
|
|
|
func (nilCarrier) Keys() []string {
|
|
return nil
|
|
}
|
|
|
|
func (nilCarrier) Get(key string) string {
|
|
return ""
|
|
}
|
|
|
|
func (nilCarrier) Set(key string, value string) {}
|
|
|
|
func TestMultiplePropagators(t *testing.T) {
|
|
ootaProp := outOfThinAirPropagator{t: t}
|
|
ns := nilCarrier{}
|
|
testProps := []propagation.TextMapPropagator{
|
|
propagation.TraceContext{},
|
|
}
|
|
bg := context.Background()
|
|
// sanity check of oota propagator, ensuring that it really
|
|
// generates the valid span context out of thin air
|
|
{
|
|
ctx := ootaProp.Extract(bg, ns)
|
|
sc := trace.RemoteSpanContextFromContext(ctx)
|
|
require.True(t, sc.IsValid(), "oota prop failed sanity check")
|
|
}
|
|
// sanity check for real propagators, ensuring that they
|
|
// really are not putting any valid span context into an empty
|
|
// go context in absence of the HTTP headers.
|
|
for _, prop := range testProps {
|
|
ctx := prop.Extract(bg, ns)
|
|
sc := trace.RemoteSpanContextFromContext(ctx)
|
|
require.Falsef(t, sc.IsValid(), "%#v failed sanity check", prop)
|
|
}
|
|
for _, prop := range testProps {
|
|
props := propagation.NewCompositeTextMapPropagator(ootaProp, prop)
|
|
ctx := props.Extract(bg, ns)
|
|
sc := trace.RemoteSpanContextFromContext(ctx)
|
|
assert.Truef(t, sc.IsValid(), "%#v clobbers span context", prop)
|
|
}
|
|
}
|