The core protocol of WoopChain
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woop/cmd/harmony/main.go

591 lines
22 KiB

package main
import (
"encoding/hex"
"flag"
"fmt"
"math/big"
"math/rand"
"os"
"path"
"runtime"
"strconv"
"time"
ethCommon "github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/log"
"github.com/harmony-one/bls/ffi/go/bls"
"github.com/pkg/errors"
"github.com/harmony-one/harmony/api/service/syncing"
"github.com/harmony-one/harmony/consensus"
"github.com/harmony-one/harmony/consensus/quorum"
"github.com/harmony-one/harmony/core"
"github.com/harmony-one/harmony/internal/blsgen"
"github.com/harmony-one/harmony/internal/common"
nodeconfig "github.com/harmony-one/harmony/internal/configs/node"
shardingconfig "github.com/harmony-one/harmony/internal/configs/sharding"
"github.com/harmony-one/harmony/internal/genesis"
hmykey "github.com/harmony-one/harmony/internal/keystore"
"github.com/harmony-one/harmony/internal/memprofiling"
"github.com/harmony-one/harmony/internal/shardchain"
"github.com/harmony-one/harmony/internal/utils"
"github.com/harmony-one/harmony/node"
"github.com/harmony-one/harmony/p2p"
"github.com/harmony-one/harmony/p2p/p2pimpl"
p2putils "github.com/harmony-one/harmony/p2p/utils"
"github.com/harmony-one/harmony/shard"
golog "github.com/ipfs/go-log"
gologging "github.com/whyrusleeping/go-logging"
)
// Version string variables
var (
version string
builtBy string
builtAt string
commit string
)
// Host
var (
myHost p2p.Host
)
func printVersion() {
_, _ = fmt.Fprintln(os.Stderr, nodeconfig.GetVersion())
os.Exit(0)
}
var (
ip = flag.String("ip", "127.0.0.1", "ip of the node")
port = flag.String("port", "9000", "port of the node.")
logFolder = flag.String("log_folder", "latest", "the folder collecting the logs of this execution")
logMaxSize = flag.Int("log_max_size", 100, "the max size in megabytes of the log file before it gets rotated")
freshDB = flag.Bool("fresh_db", false, "true means the existing disk based db will be removed")
profile = flag.Bool("profile", false, "Turn on profiling (CPU, Memory).")
metricsReportURL = flag.String("metrics_report_url", "", "If set, reports metrics to this URL.")
versionFlag = flag.Bool("version", false, "Output version info")
onlyLogTps = flag.Bool("only_log_tps", false, "Only log TPS if true")
dnsZone = flag.String("dns_zone", "", "if given and not empty, use peers from the zone (default: use libp2p peer discovery instead)")
dnsFlag = flag.Bool("dns", true, "[deprecated] equivalent to -dns_zone t.hmny.io")
//Leader needs to have a minimal number of peers to start consensus
minPeers = flag.Int("min_peers", 32, "Minimal number of Peers in shard")
// Key file to store the private key
keyFile = flag.String("key", "./.hmykey", "the p2p key file of the harmony node")
// isGenesis indicates this node is a genesis node
isGenesis = flag.Bool("is_genesis", true, "true means this node is a genesis node")
// isArchival indicates this node is an archival node that will save and archive current blockchain
isArchival = flag.Bool("is_archival", true, "false makes node faster by turning caching off")
// delayCommit is the commit-delay timer, used by Harmony nodes
delayCommit = flag.String("delay_commit", "0ms", "how long to delay sending commit messages in consensus, ex: 500ms, 1s")
// nodeType indicates the type of the node: validator, explorer
nodeType = flag.String("node_type", "validator", "node type: validator, explorer")
// networkType indicates the type of the network
networkType = flag.String("network_type", "mainnet", "type of the network: mainnet, testnet, devnet, localnet")
// syncFreq indicates sync frequency
syncFreq = flag.Int("sync_freq", 60, "unit in seconds")
// beaconSyncFreq indicates beaconchain sync frequency
beaconSyncFreq = flag.Int("beacon_sync_freq", 60, "unit in seconds")
// blockPeriod indicates the how long the leader waits to propose a new block.
blockPeriod = flag.Int("block_period", 8, "how long in second the leader waits to propose a new block.")
leaderOverride = flag.Bool("leader_override", false, "true means override the default leader role and acts as validator")
// staking indicates whether the node is operating in staking mode.
stakingFlag = flag.Bool("staking", false, "whether the node should operate in staking mode")
// shardID indicates the shard ID of this node
shardID = flag.Int("shard_id", -1, "the shard ID of this node")
enableMemProfiling = flag.Bool("enableMemProfiling", false, "Enable memsize logging.")
enableGC = flag.Bool("enableGC", true, "Enable calling garbage collector manually .")
blsKeyFile = flag.String("blskey_file", "", "The encrypted file of bls serialized private key by passphrase.")
blsPass = flag.String("blspass", "", "The file containing passphrase to decrypt the encrypted bls file.")
blsPassphrase string
// Sharding configuration parameters for devnet
devnetNumShards = flag.Uint("dn_num_shards", 2, "number of shards for -network_type=devnet (default: 2)")
devnetShardSize = flag.Int("dn_shard_size", 10, "number of nodes per shard for -network_type=devnet (default 10)")
devnetHarmonySize = flag.Int("dn_hmy_size", -1, "number of Harmony-operated nodes per shard for -network_type=devnet; negative (default) means equal to -dn_shard_size")
// logConn logs incoming/outgoing connections
logConn = flag.Bool("log_conn", false, "log incoming/outgoing connections")
keystoreDir = flag.String("keystore", hmykey.DefaultKeyStoreDir, "The default keystore directory")
// Use a separate log file to log libp2p traces
logP2P = flag.Bool("log_p2p", false, "log libp2p debug info")
initialAccount = &genesis.DeployAccount{}
// logging verbosity
verbosity = flag.Int("verbosity", 5, "Logging verbosity: 0=silent, 1=error, 2=warn, 3=info, 4=debug, 5=detail (default: 5)")
// dbDir is the database directory.
dbDir = flag.String("db_dir", "", "blockchain database directory")
// Disable view change.
disableViewChange = flag.Bool("disable_view_change", false, "Do not propose view change (testing only)")
// metrics flag to collct meetrics or not, pushgateway ip and port for metrics
metricsFlag = flag.Bool("metrics", false, "Collect and upload node metrics")
pushgatewayIP = flag.String("pushgateway_ip", "grafana.harmony.one", "Metrics view ip")
pushgatewayPort = flag.String("pushgateway_port", "9091", "Metrics view port")
publicRPC = flag.Bool("public_rpc", false, "Enable Public RPC Access (default: false)")
// Bad block revert
doRevertBefore = flag.Int("do_revert_before", 0, "If the current block is less than do_revert_before, revert all blocks until (including) revert_to block")
revertTo = flag.Int("revert_to", 0, "The revert will rollback all blocks until and including block number revert_to")
revertBeacon = flag.Bool("revert_beacon", false, "Whether to revert beacon chain or the chain this node is assigned to")
)
func initSetup() {
// maybe request passphrase for bls key.
passphraseForBls()
// Configure log parameters
utils.SetLogContext(*port, *ip)
utils.SetLogVerbosity(log.Lvl(*verbosity))
utils.AddLogFile(fmt.Sprintf("%v/validator-%v-%v.log", *logFolder, *ip, *port), *logMaxSize)
if *onlyLogTps {
matchFilterHandler := log.MatchFilterHandler("msg", "TPS Report", utils.GetLogInstance().GetHandler())
utils.GetLogInstance().SetHandler(matchFilterHandler)
}
// Add GOMAXPROCS to achieve max performance.
runtime.GOMAXPROCS(runtime.NumCPU() * 4)
// Set port and ip to global config.
nodeconfig.GetDefaultConfig().Port = *port
nodeconfig.GetDefaultConfig().IP = *ip
// Set sharding schedule
nodeconfig.SetShardingSchedule(shard.Schedule)
// Setup mem profiling.
memprofiling.GetMemProfiling().Config()
// Set default keystore Dir
hmykey.DefaultKeyStoreDir = *keystoreDir
// Set up randomization seed.
rand.Seed(int64(time.Now().Nanosecond()))
if len(p2putils.BootNodes) == 0 {
bootNodeAddrs, err := p2putils.StringsToAddrs(p2putils.DefaultBootNodeAddrStrings)
if err != nil {
utils.FatalErrMsg(err, "cannot parse default bootnode list %#v",
p2putils.DefaultBootNodeAddrStrings)
}
p2putils.BootNodes = bootNodeAddrs
}
}
func passphraseForBls() {
// If FN node running, they should either specify blsPrivateKey or the file with passphrase
// However, explorer or non-validator nodes need no blskey
if *nodeType != "validator" {
return
}
if *blsKeyFile == "" || *blsPass == "" {
fmt.Println("Internal nodes need to have pass to decrypt blskey")
os.Exit(101)
}
passphrase, err := utils.GetPassphraseFromSource(*blsPass)
if err != nil {
_, _ = fmt.Fprintf(os.Stderr, "ERROR when reading passphrase file: %v\n", err)
os.Exit(100)
}
blsPassphrase = passphrase
}
func setupLegacyNodeAccount() error {
genesisShardingConfig := shard.Schedule.InstanceForEpoch(big.NewInt(core.GenesisEpoch))
pubKey := setupConsensusKey(nodeconfig.GetDefaultConfig())
reshardingEpoch := genesisShardingConfig.ReshardingEpoch()
if reshardingEpoch != nil && len(reshardingEpoch) > 0 {
for _, epoch := range reshardingEpoch {
config := shard.Schedule.InstanceForEpoch(epoch)
_, initialAccount = config.FindAccount(pubKey.SerializeToHexStr())
if initialAccount != nil {
break
}
}
} else {
_, initialAccount = genesisShardingConfig.FindAccount(pubKey.SerializeToHexStr())
}
if initialAccount == nil {
return errors.Errorf("cannot find key %s in table", pubKey.SerializeToHexStr())
}
fmt.Printf("My Genesis Account: %v\n", *initialAccount)
return nil
}
func setupStakingNodeAccount() error {
pubKey := setupConsensusKey(nodeconfig.GetDefaultConfig())
shardID, err := nodeconfig.GetDefaultConfig().ShardIDFromConsensusKey()
if err != nil {
return errors.Wrap(err, "cannot determine shard to join")
}
initialAccount = &genesis.DeployAccount{}
initialAccount.ShardID = shardID
initialAccount.BlsPublicKey = pubKey.SerializeToHexStr()
initialAccount.Address = ""
return nil
}
func setupConsensusKey(nodeConfig *nodeconfig.ConfigType) *bls.PublicKey {
consensusPriKey, err := blsgen.LoadBlsKeyWithPassPhrase(*blsKeyFile, blsPassphrase)
if err != nil {
_, _ = fmt.Fprintf(os.Stderr, "ERROR when loading bls key, err :%v\n", err)
os.Exit(100)
}
pubKey := consensusPriKey.GetPublicKey()
// Consensus keys are the BLS12-381 keys used to sign consensus messages
nodeConfig.ConsensusPriKey, nodeConfig.ConsensusPubKey = consensusPriKey, consensusPriKey.GetPublicKey()
if nodeConfig.ConsensusPriKey == nil || nodeConfig.ConsensusPubKey == nil {
fmt.Println("error to get consensus keys.")
os.Exit(100)
}
return pubKey
}
func createGlobalConfig() (*nodeconfig.ConfigType, error) {
var err error
nodeConfig := nodeconfig.GetShardConfig(initialAccount.ShardID)
if *nodeType == "validator" {
// Set up consensus keys.
setupConsensusKey(nodeConfig)
} else {
nodeConfig.ConsensusPriKey = &bls.SecretKey{} // set dummy bls key for consensus object
}
// Set network type
netType := nodeconfig.NetworkType(*networkType)
nodeconfig.SetNetworkType(netType) // sets for both global and shard configs
nodeConfig.SetPushgatewayIP(*pushgatewayIP)
nodeConfig.SetPushgatewayPort(*pushgatewayPort)
nodeConfig.SetMetricsFlag(*metricsFlag)
// P2p private key is used for secure message transfer between p2p nodes.
nodeConfig.P2pPriKey, _, err = utils.LoadKeyFromFile(*keyFile)
if err != nil {
return nil, errors.Wrapf(err, "cannot load or create P2P key at %#v",
*keyFile)
}
selfPeer := p2p.Peer{IP: *ip, Port: *port, ConsensusPubKey: nodeConfig.ConsensusPubKey}
myHost, err = p2pimpl.NewHost(&selfPeer, nodeConfig.P2pPriKey)
if err != nil {
return nil, errors.Wrap(err, "cannot create P2P network host")
}
if *logConn && nodeConfig.GetNetworkType() != nodeconfig.Mainnet {
myHost.GetP2PHost().Network().Notify(utils.NewConnLogger(utils.GetLogger()))
}
nodeConfig.DBDir = *dbDir
return nodeConfig, nil
}
func setupConsensusAndNode(nodeConfig *nodeconfig.ConfigType) *node.Node {
// Consensus object.
// TODO: consensus object shouldn't start here
// TODO(minhdoan): During refactoring, found out that the peers list is actually empty. Need to clean up the logic of consensus later.
decider := quorum.NewDecider(quorum.SuperMajorityVote)
currentConsensus, err := consensus.New(
myHost, nodeConfig.ShardID, p2p.Peer{}, nodeConfig.ConsensusPriKey, decider,
)
currentConsensus.Decider.SetShardIDProvider(func() (uint32, error) {
return currentConsensus.ShardID, nil
})
currentConsensus.Decider.SetMyPublicKeyProvider(func() (*bls.PublicKey, error) {
return currentConsensus.PubKey, nil
})
if initialAccount.Address != "" { // staking validator doesn't have to specify ECDSA address
currentConsensus.SelfAddress = common.ParseAddr(initialAccount.Address)
}
if err != nil {
_, _ = fmt.Fprintf(os.Stderr, "Error :%v \n", err)
os.Exit(1)
}
commitDelay, err := time.ParseDuration(*delayCommit)
if err != nil || commitDelay < 0 {
_, _ = fmt.Fprintf(os.Stderr, "ERROR invalid commit delay %#v", *delayCommit)
os.Exit(1)
}
currentConsensus.SetCommitDelay(commitDelay)
currentConsensus.MinPeers = *minPeers
if *disableViewChange {
currentConsensus.DisableViewChangeForTestingOnly()
}
// Current node.
chainDBFactory := &shardchain.LDBFactory{RootDir: nodeConfig.DBDir}
currentNode := node.New(myHost, currentConsensus, chainDBFactory, *isArchival)
switch {
case *networkType == nodeconfig.Localnet:
epochConfig := shard.Schedule.InstanceForEpoch(ethCommon.Big0)
selfPort, err := strconv.ParseUint(*port, 10, 16)
if err != nil {
utils.Logger().Fatal().
Err(err).
Str("self_port_string", *port).
Msg("cannot convert self port string into port number")
}
currentNode.SyncingPeerProvider = node.NewLocalSyncingPeerProvider(
6000, uint16(selfPort), epochConfig.NumShards(), uint32(epochConfig.NumNodesPerShard()))
case *dnsZone != "":
currentNode.SyncingPeerProvider = node.NewDNSSyncingPeerProvider(*dnsZone, syncing.GetSyncingPort(*port))
case *dnsFlag:
currentNode.SyncingPeerProvider = node.NewDNSSyncingPeerProvider("t.hmny.io", syncing.GetSyncingPort(*port))
default:
currentNode.SyncingPeerProvider = node.NewLegacySyncingPeerProvider(currentNode)
}
// TODO: refactor the creation of blockchain out of node.New()
currentConsensus.ChainReader = currentNode.Blockchain()
// Set up prometheus pushgateway for metrics monitoring serivce.
currentNode.NodeConfig.SetPushgatewayIP(nodeConfig.PushgatewayIP)
currentNode.NodeConfig.SetPushgatewayPort(nodeConfig.PushgatewayPort)
currentNode.NodeConfig.SetMetricsFlag(nodeConfig.MetricsFlag)
currentNode.NodeConfig.SetBeaconGroupID(nodeconfig.NewGroupIDByShardID(0))
switch *nodeType {
case "explorer":
nodeconfig.SetDefaultRole(nodeconfig.ExplorerNode)
currentNode.NodeConfig.SetRole(nodeconfig.ExplorerNode)
currentNode.NodeConfig.SetShardGroupID(nodeconfig.NewGroupIDByShardID(nodeconfig.ShardID(*shardID)))
currentNode.NodeConfig.SetClientGroupID(nodeconfig.NewClientGroupIDByShardID(nodeconfig.ShardID(*shardID)))
case "validator":
nodeconfig.SetDefaultRole(nodeconfig.Validator)
currentNode.NodeConfig.SetRole(nodeconfig.Validator)
if nodeConfig.ShardID == shard.BeaconChainShardID {
currentNode.NodeConfig.SetShardGroupID(nodeconfig.NewGroupIDByShardID(shard.BeaconChainShardID))
currentNode.NodeConfig.SetClientGroupID(nodeconfig.NewClientGroupIDByShardID(shard.BeaconChainShardID))
} else {
currentNode.NodeConfig.SetShardGroupID(nodeconfig.NewGroupIDByShardID(nodeconfig.ShardID(nodeConfig.ShardID)))
currentNode.NodeConfig.SetClientGroupID(nodeconfig.NewClientGroupIDByShardID(nodeconfig.ShardID(nodeConfig.ShardID)))
}
}
currentNode.NodeConfig.ConsensusPubKey = nodeConfig.ConsensusPubKey
currentNode.NodeConfig.ConsensusPriKey = nodeConfig.ConsensusPriKey
// Setup block period for currentNode.
currentNode.BlockPeriod = time.Duration(*blockPeriod) * time.Second
// TODO: Disable drand. Currently drand isn't functioning but we want to compeletely turn it off for full protection.
// Enable it back after mainnet.
// dRand := drand.New(nodeConfig.Host, nodeConfig.ShardID, []p2p.Peer{}, nodeConfig.Leader, currentNode.ConfirmedBlockChannel, nodeConfig.ConsensusPriKey)
// currentNode.Consensus.RegisterPRndChannel(dRand.PRndChannel)
// currentNode.Consensus.RegisterRndChannel(dRand.RndChannel)
// currentNode.DRand = dRand
// This needs to be executed after consensus and drand are setup
if err := currentNode.InitConsensusWithValidators(); err != nil {
utils.Logger().Warn().
Int("shardID", *shardID).
Err(err).
Msg("InitConsensusWithMembers failed")
}
// Set the consensus ID to be the current block number
viewID := currentNode.Blockchain().CurrentBlock().Header().ViewID().Uint64()
currentConsensus.SetViewID(viewID + 1)
utils.Logger().Info().
Uint64("viewID", viewID).
Msg("Init Blockchain")
// Assign closure functions to the consensus object
currentConsensus.BlockVerifier = currentNode.VerifyNewBlock
currentConsensus.OnConsensusDone = currentNode.PostConsensusProcessing
currentNode.State = node.NodeWaitToJoin
// update consensus information based on the blockchain
currentConsensus.SetMode(currentConsensus.UpdateConsensusInformation())
// Watching currentNode and currentConsensus.
memprofiling.GetMemProfiling().Add("currentNode", currentNode)
memprofiling.GetMemProfiling().Add("currentConsensus", currentConsensus)
return currentNode
}
func main() {
// HACK Force usage of go implementation rather than the C based one. Do the right way, see the
// notes one line 66,67 of https://golang.org/src/net/net.go that say can make the decision at
// build time.
os.Setenv("GODEBUG", "netdns=go")
flag.Var(&p2putils.BootNodes, "bootnodes", "a list of bootnode multiaddress (delimited by ,)")
flag.Parse()
switch *nodeType {
case "validator":
case "explorer":
break
default:
_, _ = fmt.Fprintf(os.Stderr, "Unknown node type: %s\n", *nodeType)
os.Exit(1)
}
nodeconfig.SetPublicRPC(*publicRPC)
nodeconfig.SetVersion(
fmt.Sprintf("Harmony (C) 2020. %v, version %v-%v (%v %v)",
path.Base(os.Args[0]), version, commit, builtBy, builtAt),
)
if *versionFlag {
printVersion()
}
switch *networkType {
case nodeconfig.Mainnet:
shard.Schedule = shardingconfig.MainnetSchedule
case nodeconfig.Testnet:
shard.Schedule = shardingconfig.TestnetSchedule
case nodeconfig.Pangaea:
shard.Schedule = shardingconfig.PangaeaSchedule
case nodeconfig.Localnet:
shard.Schedule = shardingconfig.LocalnetSchedule
case nodeconfig.Devnet:
if *devnetHarmonySize < 0 {
*devnetHarmonySize = *devnetShardSize
}
// TODO (leo): use a passing list of accounts here
devnetConfig, err := shardingconfig.NewInstance(
uint32(*devnetNumShards), *devnetShardSize, *devnetHarmonySize, genesis.HarmonyAccounts, genesis.FoundationalNodeAccounts, nil, shardingconfig.VLBPE)
if err != nil {
_, _ = fmt.Fprintf(os.Stderr, "ERROR invalid devnet sharding config: %s",
err)
os.Exit(1)
}
shard.Schedule = shardingconfig.NewFixedSchedule(devnetConfig)
default:
_, _ = fmt.Fprintf(os.Stderr, "invalid network type: %#v\n", *networkType)
os.Exit(2)
}
initSetup()
// Set up manual call for garbage collection.
if *enableGC {
memprofiling.MaybeCallGCPeriodically()
}
if *nodeType == "validator" {
var err error
if *stakingFlag {
err = setupStakingNodeAccount()
} else {
err = setupLegacyNodeAccount()
}
if err != nil {
_, _ = fmt.Fprintf(os.Stderr, "cannot set up node account: %s\n", err)
os.Exit(1)
}
}
fmt.Printf("%s mode; node key %s -> shard %d\n",
map[bool]string{false: "Legacy", true: "Staking"}[*stakingFlag],
nodeconfig.GetDefaultConfig().ConsensusPubKey.SerializeToHexStr(),
initialAccount.ShardID)
if *nodeType != "validator" && *shardID >= 0 {
utils.Logger().Info().
Uint32("original", initialAccount.ShardID).
Int("override", *shardID).
Msg("ShardID Override")
initialAccount.ShardID = uint32(*shardID)
}
nodeConfig, err := createGlobalConfig()
if err != nil {
_, _ = fmt.Fprintf(os.Stderr, "ERROR cannot configure node: %s\n", err)
os.Exit(1)
}
currentNode := setupConsensusAndNode(nodeConfig)
//setup state syncing and beacon syncing frequency
currentNode.SetSyncFreq(*syncFreq)
currentNode.SetBeaconSyncFreq(*beaconSyncFreq)
if nodeConfig.ShardID != shard.BeaconChainShardID &&
currentNode.NodeConfig.Role() != nodeconfig.ExplorerNode {
utils.Logger().Info().
Uint32("shardID", currentNode.Blockchain().ShardID()).
Uint32("shardID", nodeConfig.ShardID).Msg("SupportBeaconSyncing")
currentNode.SupportBeaconSyncing()
}
if uint64(*doRevertBefore) != 0 && uint64(*revertTo) != 0 {
chain := currentNode.Blockchain()
if *revertBeacon {
chain = currentNode.Beaconchain()
}
curNum := chain.CurrentBlock().NumberU64()
if curNum < uint64(*doRevertBefore) && curNum >= uint64(*revertTo) {
// Remove invalid blocks
for chain.CurrentBlock().NumberU64() >= uint64(*revertTo) {
curBlock := chain.CurrentBlock()
rollbacks := []ethCommon.Hash{curBlock.Hash()}
chain.Rollback(rollbacks)
lastSig := curBlock.Header().LastCommitSignature()
sigAndBitMap := append(lastSig[:], curBlock.Header().LastCommitBitmap()...)
chain.WriteLastCommits(sigAndBitMap)
}
}
}
startMsg := "==== New Harmony Node ===="
if *nodeType == "explorer" {
startMsg = "==== New Explorer Node ===="
}
utils.Logger().Info().
Str("BlsPubKey", hex.EncodeToString(nodeConfig.ConsensusPubKey.Serialize())).
Uint32("ShardID", nodeConfig.ShardID).
Str("ShardGroupID", nodeConfig.GetShardGroupID().String()).
Str("BeaconGroupID", nodeConfig.GetBeaconGroupID().String()).
Str("ClientGroupID", nodeConfig.GetClientGroupID().String()).
Str("Role", currentNode.NodeConfig.Role().String()).
Str("multiaddress", fmt.Sprintf("/ip4/%s/tcp/%s/p2p/%s", *ip, *port, myHost.GetID().Pretty())).
Msg(startMsg)
if *enableMemProfiling {
memprofiling.GetMemProfiling().Start()
}
if *logP2P {
f, err := os.OpenFile(path.Join(*logFolder, "libp2p.log"), os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to open libp2p.log. %v\n", err)
} else {
defer f.Close()
backend1 := gologging.NewLogBackend(f, "", 0)
gologging.SetBackend(backend1)
golog.SetAllLoggers(gologging.DEBUG) // Change to DEBUG for extra info
}
}
go currentNode.SupportSyncing()
currentNode.ServiceManagerSetup()
currentNode.RunServices()
// RPC for SDK not supported for mainnet.
if err := currentNode.StartRPC(*port); err != nil {
utils.Logger().Warn().
Err(err).
Msg("StartRPC failed")
}
// Run additional node collectors
// Collect node metrics if metrics flag is set
if currentNode.NodeConfig.GetMetricsFlag() {
go currentNode.CollectMetrics()
}
currentNode.StartServer()
}