libp2p-test-plans/dht/test/tracers.go

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package test
import (
"context"
"sync"
"github.com/testground/sdk-go/runtime"
"github.com/libp2p/go-libp2p-core/host"
"github.com/libp2p/go-libp2p-core/network"
routing "github.com/libp2p/go-libp2p-core/routing"
"go.uber.org/zap"
)
var (
qonce sync.Once
qlogger *zap.SugaredLogger
)
// TraceConnections starts tracing connections into an output asset with name
// conn_trace.out.
func TraceConnections(runenv *runtime.RunEnv, node host.Host) error {
_, trace, err := runenv.CreateStructuredAsset("conn_trace.out", runtime.StandardJSONConfig())
if err != nil {
return err
}
trace = trace.With("id", node.ID())
node.Network().Notify(&network.NotifyBundle{
ConnectedF: func(n network.Network, c network.Conn) {
trace.Infow("connect", "peer", c.RemotePeer(), "dir", c.Stat().Direction)
},
DisconnectedF: func(n network.Network, c network.Conn) {
trace.Infow("disconnect", "peer", c.RemotePeer())
},
})
return nil
}
// TraceQuery returns a context.Context that can be used in a DHT query to
// cause query events to be traced. It initialises the output asset once.
func TraceQuery(ctx context.Context, runenv *runtime.RunEnv, node *NodeParams, target string, tag string) context.Context {
qonce.Do(func() {
var err error
_, qlogger, err = runenv.CreateStructuredAsset("dht_queries.out", runtime.StandardJSONConfig())
if err != nil {
runenv.RecordMessage("failed to initialize dht_queries.out asset; nooping logger: %s", err)
qlogger = zap.NewNop().Sugar()
}
})
ectx, events := routing.RegisterForQueryEvents(ctx)
log := qlogger.With("tag", tag, "node", node.host.ID().Pretty(), "target", target)
go func() {
for e := range events {
var msg string
switch e.Type {
case routing.SendingQuery:
msg = "send"
case routing.PeerResponse:
msg = "receive"
case routing.AddingPeer:
msg = "adding"
case routing.DialingPeer:
msg = "dialing"
case routing.QueryError:
msg = "error"
case routing.Provider, routing.Value:
msg = "result"
}
log.Infow(msg, "peer", e.ID, "closer", e.Responses, "value", e.Extra)
}
}()
retCtx := specializedTraceQuery(ectx, runenv, tag)
return retCtx
}