github.com/cockroachdb/cockroach@v20.2.0-alpha.1+incompatible/pkg/util/tracing/recorded_span.go (about)

     1  // Copyright 2019 The Cockroach Authors.
     2  //
     3  // Use of this software is governed by the Business Source License
     4  // included in the file licenses/BSL.txt.
     5  //
     6  // As of the Change Date specified in that file, in accordance with
     7  // the Business Source License, use of this software will be governed
     8  // by the Apache License, Version 2.0, included in the file
     9  // licenses/APL.txt.
    10  
    11  package tracing
    12  
    13  import (
    14  	"fmt"
    15  	"strings"
    16  	"time"
    17  )
    18  
    19  // LogMessageField is the field name used for the opentracing.Span.LogFields()
    20  // for a log message.
    21  const LogMessageField = "event"
    22  
    23  func (s *RecordedSpan) String() string {
    24  	sb := strings.Builder{}
    25  	sb.WriteString(fmt.Sprintf("=== %s (id: %d parent: %d)\n", s.Operation, s.SpanID, s.ParentSpanID))
    26  	for _, ev := range s.Logs {
    27  		sb.WriteString(fmt.Sprintf("%s %s\n", ev.Time.UTC().Format(time.RFC3339Nano), ev.Msg()))
    28  	}
    29  	return sb.String()
    30  }
    31  
    32  // Msg extracts the message of the LogRecord, which is either in an "event" or
    33  // "error" field.
    34  func (l LogRecord) Msg() string {
    35  	for _, f := range l.Fields {
    36  		key := f.Key
    37  		if key == LogMessageField {
    38  			return f.Value
    39  		}
    40  		if key == "error" {
    41  			return fmt.Sprint("error:", f.Value)
    42  		}
    43  	}
    44  	return ""
    45  }