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tagger.go
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tagger.go
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package v2
import (
"strconv"
"code.cloudfoundry.org/go-loggregator/v9/rpc/loggregator_v2"
)
type Tagger struct {
defaultTags map[string]string
}
func NewTagger(ts map[string]string) Tagger {
return Tagger{
defaultTags: ts,
}
}
func (t Tagger) TagEnvelope(env *loggregator_v2.Envelope) {
if env.Tags == nil {
env.Tags = make(map[string]string)
}
t.moveDeprecatedTags(env)
t.addDefaultTags(env)
}
func (t Tagger) moveDeprecatedTags(env *loggregator_v2.Envelope) {
// Move deprecated defaultTags to defaultTags.
for k, v := range env.GetDeprecatedTags() {
switch v.Data.(type) {
case *loggregator_v2.Value_Text:
env.Tags[k] = v.GetText()
case *loggregator_v2.Value_Integer:
env.Tags[k] = strconv.FormatInt(v.GetInteger(), 10)
case *loggregator_v2.Value_Decimal:
env.Tags[k] = strconv.FormatFloat(v.GetDecimal(), 'f', -1, 64)
default:
env.Tags[k] = v.String()
}
}
}
func (t Tagger) addDefaultTags(env *loggregator_v2.Envelope) {
for k, v := range t.defaultTags {
if _, ok := env.Tags[k]; !ok {
env.Tags[k] = v
}
}
}