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ping.go
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ping.go
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package metrics
import (
"time"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promauto"
"github.com/onflow/flow-go/model/flow"
)
type PingCollector struct {
reachable *prometheus.GaugeVec
sealedHeight *prometheus.GaugeVec
hotstuffCurView *prometheus.GaugeVec
}
func NewPingCollector() *PingCollector {
pc := &PingCollector{
reachable: promauto.NewGaugeVec(prometheus.GaugeOpts{
Name: "node_reachable",
Namespace: namespaceNetwork,
Subsystem: subsystemGossip,
Help: "report whether a node is reachable",
}, []string{LabelNodeID, LabelNodeAddress, LabelNodeRole, LabelNodeInfo}),
sealedHeight: promauto.NewGaugeVec(prometheus.GaugeOpts{
Name: "sealed_height",
Namespace: namespaceNetwork,
Subsystem: subsystemGossip,
Help: "the last sealed height of a node",
}, []string{LabelNodeID, LabelNodeAddress, LabelNodeRole, LabelNodeInfo, LabelNodeVersion}),
hotstuffCurView: promauto.NewGaugeVec(prometheus.GaugeOpts{
Name: "hotstuff_curview",
Namespace: namespaceNetwork,
Subsystem: subsystemGossip,
Help: "the hotstuff current view",
}, []string{LabelNodeID, LabelNodeAddress, LabelNodeInfo}),
}
return pc
}
func (pc *PingCollector) NodeReachable(node *flow.Identity, nodeInfo string, rtt time.Duration) {
var rttValue float64
if rtt > 0 {
rttValue = float64(rtt.Milliseconds())
} else {
rttValue = -1
}
pc.reachable.With(prometheus.Labels{
LabelNodeID: node.NodeID.String(),
LabelNodeAddress: node.Address,
LabelNodeRole: node.Role.String(),
LabelNodeInfo: nodeInfo}).
Set(rttValue)
}
func (pc *PingCollector) NodeInfo(node *flow.Identity, nodeInfo string, version string, sealedHeight uint64, hotstuffCurView uint64) {
pc.sealedHeight.With(prometheus.Labels{
LabelNodeID: node.NodeID.String(),
LabelNodeAddress: node.Address,
LabelNodeRole: node.Role.String(),
LabelNodeInfo: nodeInfo,
LabelNodeVersion: version}).
Set(float64(sealedHeight))
// we only need this metrics from consensus nodes.
// since non-consensus nodes will report this metrics as well, and the value will always be 0,
// we can exclude metrics from non-consensus nodes by checking if the value is above 0.
// consensus nodes will start this metrics value with 0 as well, and won't report, but that's
// OK, because their hotstuff view will quickly go up and start reporting.
if hotstuffCurView > 0 {
pc.hotstuffCurView.With(prometheus.Labels{
LabelNodeID: node.NodeID.String(),
LabelNodeAddress: node.Address,
LabelNodeInfo: nodeInfo,
}).
Set(float64(hotstuffCurView))
}
}