bergquist
84 lines
2.9 KiB
Go
84 lines
2.9 KiB
Go
// Copyright (c) 2017 Uber Technologies, Inc.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
// THE SOFTWARE.
|
|
|
|
package jaeger
|
|
|
|
import (
|
|
"github.com/opentracing/opentracing-go/log"
|
|
|
|
"github.com/uber/jaeger-client-go/internal/baggage"
|
|
)
|
|
|
|
// baggageSetter is an actor that can set a baggage value on a Span given certain
|
|
// restrictions (eg. maxValueLength).
|
|
type baggageSetter struct {
|
|
restrictionManager baggage.RestrictionManager
|
|
metrics *Metrics
|
|
}
|
|
|
|
func newBaggageSetter(restrictionManager baggage.RestrictionManager, metrics *Metrics) *baggageSetter {
|
|
return &baggageSetter{
|
|
restrictionManager: restrictionManager,
|
|
metrics: metrics,
|
|
}
|
|
}
|
|
|
|
// (NB) span should hold the lock before making this call
|
|
func (s *baggageSetter) setBaggage(span *Span, key, value string) {
|
|
var truncated bool
|
|
var prevItem string
|
|
restriction := s.restrictionManager.GetRestriction(key)
|
|
if !restriction.KeyAllowed() {
|
|
s.logFields(span, key, value, prevItem, truncated, restriction.KeyAllowed())
|
|
s.metrics.BaggageUpdateFailure.Inc(1)
|
|
return
|
|
}
|
|
if len(value) > restriction.MaxValueLength() {
|
|
truncated = true
|
|
value = value[:restriction.MaxValueLength()]
|
|
s.metrics.BaggageTruncate.Inc(1)
|
|
}
|
|
prevItem = span.context.baggage[key]
|
|
s.logFields(span, key, value, prevItem, truncated, restriction.KeyAllowed())
|
|
span.context = span.context.WithBaggageItem(key, value)
|
|
s.metrics.BaggageUpdateSuccess.Inc(1)
|
|
}
|
|
|
|
func (s *baggageSetter) logFields(span *Span, key, value, prevItem string, truncated, valid bool) {
|
|
if !span.context.IsSampled() {
|
|
return
|
|
}
|
|
fields := []log.Field{
|
|
log.String("event", "baggage"),
|
|
log.String("key", key),
|
|
log.String("value", value),
|
|
}
|
|
if prevItem != "" {
|
|
fields = append(fields, log.String("override", "true"))
|
|
}
|
|
if truncated {
|
|
fields = append(fields, log.String("truncated", "true"))
|
|
}
|
|
if !valid {
|
|
fields = append(fields, log.String("invalid", "true"))
|
|
}
|
|
span.logFieldsNoLocking(fields...)
|
|
}
|