mirror of https://github.com/knative/pkg.git
62 lines
1.9 KiB
Go
62 lines
1.9 KiB
Go
/*
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Copyright 2020 The Knative Authors
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package tracecontextb3
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import (
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"go.opencensus.io/plugin/ochttp/propagation/b3"
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"go.opencensus.io/plugin/ochttp/propagation/tracecontext"
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ocpropagation "go.opencensus.io/trace/propagation"
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"knative.dev/pkg/tracing/propagation"
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)
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// TraceContextB3Egress is a propagation.HTTPFormat that reads both TraceContext and B3 tracing
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// formats, preferring TraceContext. It always writes both formats.
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var TraceContextB3Egress = &propagation.HTTPFormatSequence{
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Ingress: []ocpropagation.HTTPFormat{
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&tracecontext.HTTPFormat{},
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&b3.HTTPFormat{},
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},
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Egress: []ocpropagation.HTTPFormat{
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&tracecontext.HTTPFormat{},
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&b3.HTTPFormat{},
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},
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}
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// TraceContextEgress is a propagation.HTTPFormat that reads both TraceContext and B3 tracing
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// formats, preferring TraceContext. It always writes TraceContext format exclusively.
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var TraceContextEgress = &propagation.HTTPFormatSequence{
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Ingress: []ocpropagation.HTTPFormat{
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&tracecontext.HTTPFormat{},
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&b3.HTTPFormat{},
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},
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Egress: []ocpropagation.HTTPFormat{
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&tracecontext.HTTPFormat{},
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},
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}
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// B3Egress is a propagation.HTTPFormat that reads both TraceContext and B3 tracing formats,
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// preferring TraceContext. It always writes B3 format exclusively.
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var B3Egress = &propagation.HTTPFormatSequence{
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Ingress: []ocpropagation.HTTPFormat{
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&tracecontext.HTTPFormat{},
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&b3.HTTPFormat{},
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},
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Egress: []ocpropagation.HTTPFormat{
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&b3.HTTPFormat{},
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},
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}
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