7c9314f231
* swarm: propagate ctx, enable opentracing * swarm/tracing: log error when tracing is misconfigured
56 lines
1.5 KiB
Go
56 lines
1.5 KiB
Go
// Copyright (c) 2017 Uber Technologies, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package jaeger
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import (
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"github.com/opentracing/opentracing-go"
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)
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// TODO this file should not be needed after TChannel PR.
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type formatKey int
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// SpanContextFormat is a constant used as OpenTracing Format.
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// Requires *SpanContext as carrier.
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// This format is intended for interop with TChannel or other Zipkin-like tracers.
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const SpanContextFormat formatKey = iota
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type jaegerTraceContextPropagator struct {
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tracer *Tracer
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}
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func (p *jaegerTraceContextPropagator) Inject(
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ctx SpanContext,
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abstractCarrier interface{},
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) error {
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carrier, ok := abstractCarrier.(*SpanContext)
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if !ok {
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return opentracing.ErrInvalidCarrier
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}
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carrier.CopyFrom(&ctx)
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return nil
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}
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func (p *jaegerTraceContextPropagator) Extract(abstractCarrier interface{}) (SpanContext, error) {
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carrier, ok := abstractCarrier.(*SpanContext)
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if !ok {
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return emptyContext, opentracing.ErrInvalidCarrier
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}
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ctx := new(SpanContext)
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ctx.CopyFrom(carrier)
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return *ctx, nil
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}
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