62 lines
2 KiB
Go
62 lines
2 KiB
Go
|
// Copyright (c) 2016 Uber Technologies, Inc.
|
||
|
|
//
|
||
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
|
|
// of this software and associated documentation files (the "Software"), to deal
|
||
|
|
// in the Software without restriction, including without limitation the rights
|
||
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||
|
|
// copies of the Software, and to permit persons to whom the Software is
|
||
|
|
// furnished to do so, subject to the following conditions:
|
||
|
|
//
|
||
|
|
// The above copyright notice and this permission notice shall be included in
|
||
|
|
// all copies or substantial portions of the Software.
|
||
|
|
//
|
||
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||
|
|
// THE SOFTWARE.
|
||
|
|
|
||
|
|
package jaeger
|
||
|
|
|
||
|
|
import (
|
||
|
|
"github.com/opentracing/opentracing-go"
|
||
|
|
)
|
||
|
|
|
||
|
|
// TODO this file should not be needed after TChannel PR.
|
||
|
|
|
||
|
|
type formatKey int
|
||
|
|
|
||
|
|
// SpanContextFormat is a constant used as OpenTracing Format.
|
||
|
|
// Requires *SpanContext as carrier.
|
||
|
|
// This format is intended for interop with TChannel or other Zipkin-like tracers.
|
||
|
|
const SpanContextFormat formatKey = iota
|
||
|
|
|
||
|
|
type jaegerTraceContextPropagator struct {
|
||
|
|
tracer *Tracer
|
||
|
|
}
|
||
|
|
|
||
|
|
func (p *jaegerTraceContextPropagator) Inject(
|
||
|
|
ctx SpanContext,
|
||
|
|
abstractCarrier interface{},
|
||
|
|
) error {
|
||
|
|
carrier, ok := abstractCarrier.(*SpanContext)
|
||
|
|
if !ok {
|
||
|
|
return opentracing.ErrInvalidCarrier
|
||
|
|
}
|
||
|
|
|
||
|
|
carrier.CopyFrom(&ctx)
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (p *jaegerTraceContextPropagator) Extract(abstractCarrier interface{}) (SpanContext, error) {
|
||
|
|
carrier, ok := abstractCarrier.(*SpanContext)
|
||
|
|
if !ok {
|
||
|
|
return emptyContext, opentracing.ErrInvalidCarrier
|
||
|
|
}
|
||
|
|
ctx := new(SpanContext)
|
||
|
|
ctx.CopyFrom(carrier)
|
||
|
|
return *ctx, nil
|
||
|
|
}
|