TUN-5261: Collect QUIC metrics about RTT, packets and bytes transfered and log events at tracing level

vendor/github.com/lucas-clemente/quic-go/qlog/trace.go

@@ -0,0 +1,66 @@
+package qlog
+
+import (
+	"time"
+
+	"github.com/francoispqt/gojay"
+
+	"github.com/lucas-clemente/quic-go/internal/protocol"
+)
+
+type topLevel struct {
+	trace trace
+}
+
+func (topLevel) IsNil() bool { return false }
+func (l topLevel) MarshalJSONObject(enc *gojay.Encoder) {
+	enc.StringKey("qlog_format", "NDJSON")
+	enc.StringKey("qlog_version", "draft-02")
+	enc.StringKeyOmitEmpty("title", "quic-go qlog")
+	enc.StringKey("code_version", quicGoVersion)
+	enc.ObjectKey("trace", l.trace)
+}
+
+type vantagePoint struct {
+	Name string
+	Type protocol.Perspective
+}
+
+func (p vantagePoint) IsNil() bool { return false }
+func (p vantagePoint) MarshalJSONObject(enc *gojay.Encoder) {
+	enc.StringKeyOmitEmpty("name", p.Name)
+	switch p.Type {
+	case protocol.PerspectiveClient:
+		enc.StringKey("type", "client")
+	case protocol.PerspectiveServer:
+		enc.StringKey("type", "server")
+	}
+}
+
+type commonFields struct {
+	ODCID         connectionID
+	GroupID       connectionID
+	ProtocolType  string
+	ReferenceTime time.Time
+}
+
+func (f commonFields) MarshalJSONObject(enc *gojay.Encoder) {
+	enc.StringKey("ODCID", f.ODCID.String())
+	enc.StringKey("group_id", f.ODCID.String())
+	enc.StringKeyOmitEmpty("protocol_type", f.ProtocolType)
+	enc.Float64Key("reference_time", float64(f.ReferenceTime.UnixNano())/1e6)
+	enc.StringKey("time_format", "relative")
+}
+
+func (f commonFields) IsNil() bool { return false }
+
+type trace struct {
+	VantagePoint vantagePoint
+	CommonFields commonFields
+}
+
+func (trace) IsNil() bool { return false }
+func (t trace) MarshalJSONObject(enc *gojay.Encoder) {
+	enc.ObjectKey("vantage_point", t.VantagePoint)
+	enc.ObjectKey("common_fields", t.CommonFields)
+}