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web/api: use stream encoder for embedded labels 

This is much more efficient.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
This commit is contained in:
Bryan Boreham 2023-07-13 15:39:54 +01:00
parent bb528d4a55
commit dcadb32eb1
1 changed files with 3 additions and 18 deletions
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21
web/api/v1/json_codec.go
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@ -70,12 +70,7 @@ func marshalSeriesJSON(ptr unsafe.Pointer, stream *jsoniter.Stream) {
s := *((*promql.Series)(ptr))
stream.WriteObjectStart()
stream.WriteObjectField(`metric`)
m, err := s.Metric.MarshalJSON()
if err != nil {
stream.Error = err
return
}
stream.SetBuffer(append(stream.Buffer(), m...))
marshalLabelsJSON(s.Metric, stream)
for i, p := range s.Floats {
stream.WriteMore()
@ -131,12 +126,7 @@ func marshalSampleJSON(ptr unsafe.Pointer, stream *jsoniter.Stream) {
s := *((*promql.Sample)(ptr))
stream.WriteObjectStart()
stream.WriteObjectField(`metric`)
m, err := s.Metric.MarshalJSON()
if err != nil {
stream.Error = err
return
}
stream.SetBuffer(append(stream.Buffer(), m...))
marshalLabelsJSON(s.Metric, stream)
stream.WriteMore()
if s.H == nil {
stream.WriteObjectField(`value`)
@ -196,12 +186,7 @@ func marshalExemplarJSON(ptr unsafe.Pointer, stream *jsoniter.Stream) {
// "labels" key.
stream.WriteObjectField(`labels`)
lbls, err := p.Labels.MarshalJSON()
if err != nil {
stream.Error = err
return
}
stream.SetBuffer(append(stream.Buffer(), lbls...))
marshalLabelsJSON(p.Labels, stream)
// "value" key.
stream.WriteMore()