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standard.go (961B)

      1 // Copyright 2020 The Go Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style
      3 // license that can be found in the LICENSE file.
      4 
      5 package keys
      6 
      7 var (
      8 	// Msg is a key used to add message strings to label lists.
      9 	Msg = NewString("message", "a readable message")
     10 	// Label is a key used to indicate an event adds labels to the context.
     11 	Label = NewTag("label", "a label context marker")
     12 	// Start is used for things like traces that have a name.
     13 	Start = NewString("start", "span start")
     14 	// Metric is a key used to indicate an event records metrics.
     15 	End = NewTag("end", "a span end marker")
     16 	// Metric is a key used to indicate an event records metrics.
     17 	Detach = NewTag("detach", "a span detach marker")
     18 	// Err is a key used to add error values to label lists.
     19 	Err = NewError("error", "an error that occurred")
     20 	// Metric is a key used to indicate an event records metrics.
     21 	Metric = NewTag("metric", "a metric event marker")
     22 )