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vendor/go.opencensus.io/trace/exemplar.go

@@ -1,43 +0,0 @@
-// 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
-}