lotus/lotus-soup/tracer.go

92 lines
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2020-06-26 08:49:24 +00:00
package main
import (
"context"
"crypto/rand"
"fmt"
"log"
"github.com/testground/sdk-go/sync"
"github.com/libp2p/go-libp2p"
"github.com/libp2p/go-libp2p-core/crypto"
"github.com/libp2p/go-libp2p-core/host"
"github.com/libp2p/go-libp2p-pubsub-tracer/traced"
ma "github.com/multiformats/go-multiaddr"
)
var (
pubsubTracerTopic = sync.NewTopic("pubsubTracer", &PubsubTracerMsg{})
)
type PubsubTracer struct {
host host.Host
traced *traced.TraceCollector
}
type PubsubTracerMsg struct {
Tracer string
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}
func (tr *PubsubTracer) Stop() {
tr.traced.Stop()
err := tr.host.Close()
if err != nil {
log.Printf("error closing host: %s", err)
}
}
func preparePubsubTracer(t *TestEnvironment) (*PubsubTracer, error) {
ctx := context.Background()
privk, _, err := crypto.GenerateEd25519Key(rand.Reader)
if err != nil {
return nil, err
}
tracedIP := t.NetClient.MustGetDataNetworkIP().String()
tracedAddr := fmt.Sprintf("/ip4/%s/tcp/4001", tracedIP)
host, err := libp2p.New(ctx,
libp2p.Identity(privk),
libp2p.ListenAddrStrings(tracedAddr),
)
if err != nil {
return nil, err
}
tracedDir := t.TestOutputsPath + "/traced.logs"
traced, err := traced.NewTraceCollector(host, tracedDir)
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if err != nil {
host.Close()
return nil, err
}
tracedMultiaddrStr := fmt.Sprintf("%s/p2p/%s", tracedAddr, host.ID())
t.RecordMessage("I am %s", tracedMultiaddrStr)
_ = ma.StringCast(tracedMultiaddrStr)
tracedMsg := &PubsubTracerMsg{Tracer: tracedMultiaddrStr}
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t.SyncClient.MustPublish(ctx, pubsubTracerTopic, tracedMsg)
t.RecordMessage("waiting for all nodes to be ready")
t.SyncClient.MustSignalAndWait(ctx, stateReady, t.TestInstanceCount)
return &PubsubTracer{host: host, traced: traced}, nil
}
func runPubsubTracer(t *TestEnvironment) error {
t.RecordMessage("running pubsub tracer")
tracer, err := preparePubsubTracer(t)
if err != nil {
return err
}
defer tracer.Stop()
ctx := context.Background()
t.SyncClient.MustSignalAndWait(ctx, stateDone, t.TestInstanceCount)
return nil
}