go-waku/waku/v2/protocol/relay/metrics.go

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package relay
import (
"github.com/libp2p/go-libp2p/p2p/metricshelper"
"github.com/prometheus/client_golang/prometheus"
"github.com/waku-org/go-waku/logging"
waku_proto "github.com/waku-org/go-waku/waku/v2/protocol"
"go.uber.org/zap"
)
var messages = prometheus.NewCounterVec(
prometheus.CounterOpts{
Name: "waku_node_messages",
Help: "The number of the messages received",
},
[]string{"pubsubTopic"},
)
var messageSize = prometheus.NewHistogram(prometheus.HistogramOpts{
Name: "waku_histogram_message_size",
Help: "message size histogram in kB",
Buckets: []float64{0.0, 5.0, 15.0, 50.0, 100.0, 300.0, 700.0, 1000.0},
})
var collectors = []prometheus.Collector{
messages,
messageSize,
}
// Metrics exposes the functions required to update prometheus metrics for relay protocol
type Metrics interface {
RecordMessage(envelope *waku_proto.Envelope)
}
type metricsImpl struct {
log *zap.Logger
reg prometheus.Registerer
}
func newMetrics(reg prometheus.Registerer, logger *zap.Logger) Metrics {
metricshelper.RegisterCollectors(reg, collectors...)
return &metricsImpl{
log: logger,
reg: reg,
}
}
// RecordMessage is used to increase the counter for the number of messages received via waku relay
func (m *metricsImpl) RecordMessage(envelope *waku_proto.Envelope) {
go func() {
payloadSizeInBytes := len(envelope.Message().Payload)
payloadSizeInKb := float64(payloadSizeInBytes) / 1000
messageSize.Observe(payloadSizeInKb)
pubsubTopic := envelope.PubsubTopic()
messages.WithLabelValues(pubsubTopic).Inc()
m.log.Debug("waku.relay received", zap.String("pubsubTopic", pubsubTopic), logging.HexString("hash", envelope.Hash()), zap.Int64("receivedTime", envelope.Index().ReceiverTime), zap.Int("payloadSizeBytes", payloadSizeInBytes))
}()
}