/
pex.go
49 lines (42 loc) · 1.2 KB
/
pex.go
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package pex
import (
"context"
"fmt"
"github.com/libp2p/go-libp2p-core/event"
"github.com/libp2p/go-libp2p-core/host"
"github.com/libp2p/go-libp2p-core/peer"
"github.com/influxdata/influxdb-client-go/v2/api"
"github.com/wetware/casm/pkg/pex"
"golang.org/x/sync/semaphore"
"sync/atomic"
)
const ns = "casm.lab.pex"
var (
metricTick int64 = 1
evtAmount int64 = 0
sem = semaphore.NewWeighted(int64(50))
shortID = make(map[peer.ID]int, 0)
)
func viewMetricsLoop(ctx context.Context, writeAPI api.WriteAPI, h host.Host, sub event.Subscription, gossip *pex.GossipParams) error {
for {
select {
case v := <-sub.Out():
if err := sem.Acquire(ctx, 1); err != nil {
break
}
view := []*pex.GossipRecord(v.(pex.EvtViewUpdated))
viewString := ""
for _, pr := range view {
viewString = fmt.Sprintf("%v-%v", viewString, shortID[pr.PeerID])
}
name := fmt.Sprintf("view,node=%v,records=%v,cluster=%v,tick=%v,"+
"C=%v,S=%v,R=%v,D=%v value=0", shortID[h.ID()], viewString, 0, metricTick,
gossip.C, gossip.S, gossip.R, gossip.D)
writeAPI.WriteRecord(name)
sem.Release(1)
atomic.AddInt64(&evtAmount, 1)
case <-ctx.Done():
return ctx.Err()
}
}
}