/
main.go
161 lines (135 loc) · 4.5 KB
/
main.go
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package main
import (
"context"
"encoding/hex"
"encoding/json"
"fmt"
"log"
"strings"
"time"
"github.com/btcsuite/btcd/btcec/v2/schnorr"
"github.com/kelseyhightower/envconfig"
gorpc "github.com/libp2p/go-libp2p-gorpc"
"github.com/libp2p/go-libp2p/core/host"
"github.com/nbd-wtf/go-nostr"
p2pHost "github.com/sithumonline/demedia-nostr/host"
"github.com/sithumonline/demedia-nostr/keys"
"github.com/sithumonline/demedia-nostr/peer/bridge"
"github.com/sithumonline/demedia-nostr/peer/handler"
"github.com/sithumonline/demedia-nostr/port"
"github.com/sithumonline/demedia-nostr/relayer"
"github.com/sithumonline/demedia-nostr/relayer/ql"
"github.com/sithumonline/demedia-nostr/relayer/storage/postgresql"
"github.com/sithumonline/demedia-nostr/trace"
)
type Relay struct {
PostgresDatabase string `envconfig:"POSTGRESQL_DATABASE"`
storage *postgresql.PostgresBackend
host host.Host
Hex string `envconfig:"HEX" default:"fad5c8855b840a0b1ed4c323dbad0f11a83a49cad6b3fe8d5819ac83d38b6a19"`
PeerAddress string
BtcPubKey string
Hub string `envconfig:"HUB" default:"/ip4/192.168.1.3/tcp/10880/p2p/16Uiu2HAmP44YB5WWWdYccDYRzByum6fWDma13csdVUcySzwPMqYx"`
WebPort string `envconfig:"WEB_PORT" default:"4000"`
P2PPort string `envconfig:"P2P_PORT" default:"10880"`
LocalNet string `envconfig:"LOCAL_NET" default:"1"`
Environment string `envconfig:"ENVIRONMENT" default:"development"`
Version string `envconfig:"VERSION" default:"0.0.1"`
TraceExporter string `envconfig:"TRACE_EXPORTER" default:"jaeger"`
}
func (r *Relay) Name() string {
return "Peer"
}
func (r *Relay) Storage() relayer.Storage {
return r.storage
}
func (r *Relay) OnInitialized(*relayer.Server) {}
func (r *Relay) Init() error {
err := envconfig.Process("", r)
if err != nil {
return fmt.Errorf("couldn't process envconfig: %w", err)
}
// every hour, delete all very old events
go func() {
db := r.Storage().(*postgresql.PostgresBackend)
for {
time.Sleep(60 * time.Minute)
db.DB.Exec(`DELETE FROM event WHERE created_at < $1`, time.Now().AddDate(0, -3, 0).Unix()) // 3 months
}
}()
go func() {
ticker := time.NewTicker(3 * time.Second)
logger := relayer.DefaultLogger()
for range ticker.C {
reply, err := ql.QlCall(r.host, context.Background(), fmt.Sprintf("%s;%s", r.BtcPubKey, r.PeerAddress), r.Hub, "PingService", "Ping", "", nil)
if err != nil {
if strings.Contains(fmt.Sprint(err), "connection refused") {
logger.Infof("connection refused, please check the address")
ticker.Reset(10 * time.Second)
continue
} else if strings.Contains(fmt.Sprint(err), "dial backoff") {
ticker.Reset(15 * time.Second)
logger.Errorf("dial backoff: %v", err)
continue
} else {
logger.Panicf("error: %v", err)
}
}
logger.CustomLevel("ping", "Response from hub: %s", reply.Data)
ticker.Reset(5 * time.Second)
}
}()
return nil
}
func (r *Relay) AcceptEvent(evt *nostr.Event) bool {
// block events that are too large
jsonb, _ := json.Marshal(evt)
if len(jsonb) > 10000 {
return false
}
return true
}
func main() {
r := Relay{}
if err := envconfig.Process("", &r); err != nil {
log.Fatalf("failed to read from env: %v", err)
}
tc, shutdown := trace.CreateTracers(trace.TracerConfig{
ServiceName: r.Name(),
Environment: r.Environment,
ServiceVersion: r.Version,
TraceExporter: r.TraceExporter,
})
defer shutdown(context.Background())
r.storage = &postgresql.PostgresBackend{DatabaseURL: r.PostgresDatabase, ServiceName: r.Name()}
var p string
if r.P2PPort == "10880" {
p = fmt.Sprintf("%d", port.GetTargetAddressPort())
} else {
p = r.P2PPort
}
_, privKey, btcPvtKey, btcPubKey, err := keys.GetKeys(r.Hex)
if err != nil {
log.Fatalf("failed to get priv key for libp2p: %v", err)
}
r.BtcPubKey = hex.EncodeToString(schnorr.SerializePubKey(btcPubKey))
log.Printf("BTC PvtKey: %s", hex.EncodeToString(btcPvtKey.Serialize()))
add := p2pHost.GetAdd(p, r.LocalNet)
h, err := p2pHost.GetHost(*privKey, add)
if err != nil {
log.Fatalf("failed to get host: %v", err)
}
r.host = h
peerAddr := p2pHost.GetMultiAddr(h)
r.PeerAddress = peerAddr.String()
log.Printf("Peer: listening on %s\n", peerAddr)
rpcHost := gorpc.NewServer(h, "/p2p/1.0.0")
bridgeService := bridge.NewBridgeService(&r, tc)
if err := rpcHost.Register(bridgeService); err != nil {
log.Fatalf("failed to register rpc server: %v", err)
}
go handler.Start(fmt.Sprintf(":%s", r.WebPort), &r)
if err := relayer.Start(&r, nil, nil, nil, tc); err != nil {
log.Fatalf("server terminated: %v", err)
}
}