55 lines
1.5 KiB
Go
55 lines
1.5 KiB
Go
// Copyright (c) 2017 Uber Technologies, Inc.
|
|
//
|
|
// 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 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
|
|
}
|