mirror of
https://github.com/octoleo/restic.git
synced 2024-12-02 09:58:25 +00:00
44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
// Copyright 2018, OpenCensus 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 trace
|
|
|
|
import (
|
|
"context"
|
|
"encoding/hex"
|
|
|
|
"go.opencensus.io/exemplar"
|
|
)
|
|
|
|
func init() {
|
|
exemplar.RegisterAttachmentExtractor(attachSpanContext)
|
|
}
|
|
|
|
func attachSpanContext(ctx context.Context, a exemplar.Attachments) exemplar.Attachments {
|
|
span := FromContext(ctx)
|
|
if span == nil {
|
|
return a
|
|
}
|
|
sc := span.SpanContext()
|
|
if !sc.IsSampled() {
|
|
return a
|
|
}
|
|
if a == nil {
|
|
a = make(exemplar.Attachments)
|
|
}
|
|
a[exemplar.KeyTraceID] = hex.EncodeToString(sc.TraceID[:])
|
|
a[exemplar.KeySpanID] = hex.EncodeToString(sc.SpanID[:])
|
|
return a
|
|
}
|