mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2024-12-12 10:04:29 +02:00
19294aab4c
* `porto -w --include-internal .` * Bump `porto` to 0.4.0 and include internal files Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
113 lines
3.4 KiB
Go
113 lines
3.4 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 internaltest // import "go.opentelemetry.io/otel/internal/internaltest"
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
"testing"
|
|
|
|
"go.opentelemetry.io/otel/propagation"
|
|
)
|
|
|
|
type ctxKeyType string
|
|
|
|
type state struct {
|
|
Injections uint64
|
|
Extractions uint64
|
|
}
|
|
|
|
func newState(encoded string) state {
|
|
if encoded == "" {
|
|
return state{}
|
|
}
|
|
split := strings.SplitN(encoded, ",", 2)
|
|
injects, _ := strconv.ParseUint(split[0], 10, 64)
|
|
extracts, _ := strconv.ParseUint(split[1], 10, 64)
|
|
return state{
|
|
Injections: injects,
|
|
Extractions: extracts,
|
|
}
|
|
}
|
|
|
|
func (s state) String() string {
|
|
return fmt.Sprintf("%d,%d", s.Injections, s.Extractions)
|
|
}
|
|
|
|
// TextMapPropagator is a propagation.TextMapPropagator used for testing.
|
|
type TextMapPropagator struct {
|
|
name string
|
|
ctxKey ctxKeyType
|
|
}
|
|
|
|
var _ propagation.TextMapPropagator = (*TextMapPropagator)(nil)
|
|
|
|
// NewTextMapPropagator returns a new TextMapPropagator for testing. It will
|
|
// use name as the key it injects into a TextMapCarrier when Inject is called.
|
|
func NewTextMapPropagator(name string) *TextMapPropagator {
|
|
return &TextMapPropagator{name: name, ctxKey: ctxKeyType(name)}
|
|
}
|
|
|
|
func (p *TextMapPropagator) stateFromContext(ctx context.Context) state {
|
|
if v := ctx.Value(p.ctxKey); v != nil {
|
|
if s, ok := v.(state); ok {
|
|
return s
|
|
}
|
|
}
|
|
return state{}
|
|
}
|
|
|
|
func (p *TextMapPropagator) stateFromCarrier(carrier propagation.TextMapCarrier) state {
|
|
return newState(carrier.Get(p.name))
|
|
}
|
|
|
|
// Inject sets cross-cutting concerns for p from ctx into carrier.
|
|
func (p *TextMapPropagator) Inject(ctx context.Context, carrier propagation.TextMapCarrier) {
|
|
s := p.stateFromContext(ctx)
|
|
s.Injections++
|
|
carrier.Set(p.name, s.String())
|
|
}
|
|
|
|
// InjectedN tests if p has made n injections to carrier.
|
|
func (p *TextMapPropagator) InjectedN(t *testing.T, carrier *TextMapCarrier, n int) bool {
|
|
if actual := p.stateFromCarrier(carrier).Injections; actual != uint64(n) {
|
|
t.Errorf("TextMapPropagator{%q} injected %d times, not %d", p.name, actual, n)
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Extract reads cross-cutting concerns for p from carrier into ctx.
|
|
func (p *TextMapPropagator) Extract(ctx context.Context, carrier propagation.TextMapCarrier) context.Context {
|
|
s := p.stateFromCarrier(carrier)
|
|
s.Extractions++
|
|
return context.WithValue(ctx, p.ctxKey, s)
|
|
}
|
|
|
|
// ExtractedN tests if p has made n extractions from the lineage of ctx.
|
|
// nolint (context is not first arg)
|
|
func (p *TextMapPropagator) ExtractedN(t *testing.T, ctx context.Context, n int) bool {
|
|
if actual := p.stateFromContext(ctx).Extractions; actual != uint64(n) {
|
|
t.Errorf("TextMapPropagator{%q} extracted %d time, not %d", p.name, actual, n)
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Fields returns the name of p as the key who's value is set with Inject.
|
|
func (p *TextMapPropagator) Fields() []string { return []string{p.name} }
|