Merge pull request #1669 from Roasbeef/funding-mgr-server-init
funding+server: move initialization of funding manager into the server
This commit is contained in:
Conner Fromknecht
GitHub
commit
d0179eb6b5
195
lnd.go
195
lnd.go
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@ -33,6 +33,8 @@ import (
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"google.golang.org/grpc"
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"google.golang.org/grpc/credentials"
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"github.com/btcsuite/btcd/btcec"
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"github.com/btcsuite/btcwallet/wallet"
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proxy "github.com/grpc-ecosystem/grpc-gateway/runtime"
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flags "github.com/jessevdk/go-flags"
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"github.com/lightningnetwork/lnd/channeldb"
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@ -41,14 +43,9 @@ import (
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"github.com/lightningnetwork/lnd/lnrpc"
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"github.com/lightningnetwork/lnd/lnwallet"
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"github.com/lightningnetwork/lnd/lnwallet/btcwallet"
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"github.com/lightningnetwork/lnd/lnwire"
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"github.com/lightningnetwork/lnd/macaroons"
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"github.com/lightningnetwork/lnd/signal"
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"github.com/lightningnetwork/lnd/walletunlocker"
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"github.com/btcsuite/btcd/btcec"
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"github.com/btcsuite/btcd/wire"
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"github.com/btcsuite/btcutil"
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"github.com/btcsuite/btcwallet/wallet"
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)
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const (
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@ -289,17 +286,6 @@ func lndMain() error {
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primaryChain := registeredChains.PrimaryChain()
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registeredChains.RegisterChain(primaryChain, activeChainControl)
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// Select the configuration and furnding parameters for Bitcoin or
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// Litecoin, depending on the primary registered chain.
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chainCfg := cfg.Bitcoin
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minRemoteDelay := minBtcRemoteDelay
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maxRemoteDelay := maxBtcRemoteDelay
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if primaryChain == litecoinChain {
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chainCfg = cfg.Litecoin
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minRemoteDelay = minLtcRemoteDelay
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maxRemoteDelay = maxLtcRemoteDelay
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}
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// TODO(roasbeef): add rotation
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idPrivKey, err := activeChainControl.wallet.DerivePrivKey(keychain.KeyDescriptor{
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KeyLocator: keychain.KeyLocator{
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@ -328,183 +314,6 @@ func lndMain() error {
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return err
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}
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// Next, we'll initialize the funding manager itself so it can answer
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// queries while the wallet+chain are still syncing.
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nodeSigner := newNodeSigner(idPrivKey)
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var chanIDSeed [32]byte
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if _, err := rand.Read(chanIDSeed[:]); err != nil {
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return err
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}
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fundingMgr, err := newFundingManager(fundingConfig{
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IDKey: idPrivKey.PubKey(),
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Wallet: activeChainControl.wallet,
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PublishTransaction: activeChainControl.wallet.PublishTransaction,
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Notifier: activeChainControl.chainNotifier,
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FeeEstimator: activeChainControl.feeEstimator,
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SignMessage: func(pubKey *btcec.PublicKey,
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msg []byte) (*btcec.Signature, error) {
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if pubKey.IsEqual(idPrivKey.PubKey()) {
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return nodeSigner.SignMessage(pubKey, msg)
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}
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return activeChainControl.msgSigner.SignMessage(
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pubKey, msg,
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)
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},
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CurrentNodeAnnouncement: func() (lnwire.NodeAnnouncement, error) {
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return server.genNodeAnnouncement(true)
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},
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SendAnnouncement: func(msg lnwire.Message) error {
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errChan := server.authGossiper.ProcessLocalAnnouncement(msg,
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idPrivKey.PubKey())
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return <-errChan
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},
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NotifyWhenOnline: server.NotifyWhenOnline,
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TempChanIDSeed: chanIDSeed,
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FindChannel: func(chanID lnwire.ChannelID) (*lnwallet.LightningChannel, error) {
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dbChannels, err := chanDB.FetchAllChannels()
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if err != nil {
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return nil, err
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}
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for _, channel := range dbChannels {
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if chanID.IsChanPoint(&channel.FundingOutpoint) {
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// TODO(roasbeef): populate beacon
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return lnwallet.NewLightningChannel(
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activeChainControl.signer,
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server.witnessBeacon,
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channel)
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}
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}
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return nil, fmt.Errorf("unable to find channel")
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},
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DefaultRoutingPolicy: activeChainControl.routingPolicy,
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NumRequiredConfs: func(chanAmt btcutil.Amount,
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pushAmt lnwire.MilliSatoshi) uint16 {
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// For large channels we increase the number
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// of confirmations we require for the
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// channel to be considered open. As it is
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// always the responder that gets to choose
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// value, the pushAmt is value being pushed
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// to us. This means we have more to lose
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// in the case this gets re-orged out, and
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// we will require more confirmations before
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// we consider it open.
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// TODO(halseth): Use Litecoin params in case
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// of LTC channels.
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// In case the user has explicitly specified
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// a default value for the number of
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// confirmations, we use it.
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defaultConf := uint16(chainCfg.DefaultNumChanConfs)
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if defaultConf != 0 {
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return defaultConf
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}
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// If not we return a value scaled linearly
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// between 3 and 6, depending on channel size.
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// TODO(halseth): Use 1 as minimum?
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minConf := uint64(3)
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maxConf := uint64(6)
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maxChannelSize := uint64(
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lnwire.NewMSatFromSatoshis(maxFundingAmount))
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stake := lnwire.NewMSatFromSatoshis(chanAmt) + pushAmt
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conf := maxConf * uint64(stake) / maxChannelSize
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if conf < minConf {
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conf = minConf
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}
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if conf > maxConf {
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conf = maxConf
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}
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return uint16(conf)
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},
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RequiredRemoteDelay: func(chanAmt btcutil.Amount) uint16 {
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// We scale the remote CSV delay (the time the
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// remote have to claim funds in case of a unilateral
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// close) linearly from minRemoteDelay blocks
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// for small channels, to maxRemoteDelay blocks
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// for channels of size maxFundingAmount.
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// TODO(halseth): Litecoin parameter for LTC.
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// In case the user has explicitly specified
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// a default value for the remote delay, we
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// use it.
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defaultDelay := uint16(chainCfg.DefaultRemoteDelay)
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if defaultDelay > 0 {
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return defaultDelay
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}
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// If not we scale according to channel size.
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delay := uint16(btcutil.Amount(maxRemoteDelay) *
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chanAmt / maxFundingAmount)
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if delay < minRemoteDelay {
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delay = minRemoteDelay
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}
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if delay > maxRemoteDelay {
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delay = maxRemoteDelay
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}
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return delay
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},
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WatchNewChannel: func(channel *channeldb.OpenChannel,
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peerKey *btcec.PublicKey) error {
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// First, we'll mark this new peer as a persistent peer
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// for re-connection purposes.
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server.mu.Lock()
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pubStr := string(peerKey.SerializeCompressed())
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server.persistentPeers[pubStr] = struct{}{}
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server.mu.Unlock()
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// With that taken care of, we'll send this channel to
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// the chain arb so it can react to on-chain events.
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return server.chainArb.WatchNewChannel(channel)
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},
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ReportShortChanID: func(chanPoint wire.OutPoint) error {
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cid := lnwire.NewChanIDFromOutPoint(&chanPoint)
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return server.htlcSwitch.UpdateShortChanID(cid)
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},
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RequiredRemoteChanReserve: func(chanAmt,
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dustLimit btcutil.Amount) btcutil.Amount {
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// By default, we'll require the remote peer to maintain
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// at least 1% of the total channel capacity at all
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// times. If this value ends up dipping below the dust
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// limit, then we'll use the dust limit itself as the
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// reserve as required by BOLT #2.
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reserve := chanAmt / 100
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if reserve < dustLimit {
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reserve = dustLimit
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}
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return reserve
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},
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RequiredRemoteMaxValue: func(chanAmt btcutil.Amount) lnwire.MilliSatoshi {
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// By default, we'll allow the remote peer to fully
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// utilize the full bandwidth of the channel, minus our
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// required reserve.
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reserve := lnwire.NewMSatFromSatoshis(chanAmt / 100)
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return lnwire.NewMSatFromSatoshis(chanAmt) - reserve
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},
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RequiredRemoteMaxHTLCs: func(chanAmt btcutil.Amount) uint16 {
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// By default, we'll permit them to utilize the full
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// channel bandwidth.
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return uint16(lnwallet.MaxHTLCNumber / 2)
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},
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ZombieSweeperInterval: 1 * time.Minute,
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ReservationTimeout: 10 * time.Minute,
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MinChanSize: btcutil.Amount(cfg.MinChanSize),
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})
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if err != nil {
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return err
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}
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if err := fundingMgr.Start(); err != nil {
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return err
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}
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server.fundingMgr = fundingMgr
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defer fundingMgr.Stop()
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// Check macaroon authentication if macaroons aren't disabled.
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if macaroonService != nil {
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serverOpts = append(serverOpts,
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184
server.go
184
server.go
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@ -678,6 +678,186 @@ func newServer(listenAddrs []net.Addr, chanDB *channeldb.DB, cc *chainControl,
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Store: newRetributionStore(chanDB),
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})
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// Select the configuration and furnding parameters for Bitcoin or
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// Litecoin, depending on the primary registered chain.
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primaryChain := registeredChains.PrimaryChain()
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chainCfg := cfg.Bitcoin
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minRemoteDelay := minBtcRemoteDelay
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maxRemoteDelay := maxBtcRemoteDelay
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if primaryChain == litecoinChain {
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chainCfg = cfg.Litecoin
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minRemoteDelay = minLtcRemoteDelay
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maxRemoteDelay = maxLtcRemoteDelay
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}
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nodeSigner := newNodeSigner(privKey)
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var chanIDSeed [32]byte
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if _, err := rand.Read(chanIDSeed[:]); err != nil {
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return nil, err
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}
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s.fundingMgr, err = newFundingManager(fundingConfig{
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IDKey: privKey.PubKey(),
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Wallet: cc.wallet,
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PublishTransaction: cc.wallet.PublishTransaction,
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Notifier: cc.chainNotifier,
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FeeEstimator: cc.feeEstimator,
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SignMessage: func(pubKey *btcec.PublicKey,
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msg []byte) (*btcec.Signature, error) {
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if pubKey.IsEqual(privKey.PubKey()) {
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return nodeSigner.SignMessage(pubKey, msg)
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}
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return cc.msgSigner.SignMessage(pubKey, msg)
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},
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CurrentNodeAnnouncement: func() (lnwire.NodeAnnouncement, error) {
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return s.genNodeAnnouncement(true)
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},
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SendAnnouncement: func(msg lnwire.Message) error {
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errChan := s.authGossiper.ProcessLocalAnnouncement(
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msg, privKey.PubKey(),
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)
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return <-errChan
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},
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NotifyWhenOnline: s.NotifyWhenOnline,
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TempChanIDSeed: chanIDSeed,
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FindChannel: func(chanID lnwire.ChannelID) (*lnwallet.LightningChannel, error) {
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dbChannels, err := chanDB.FetchAllChannels()
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if err != nil {
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return nil, err
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}
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for _, channel := range dbChannels {
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if chanID.IsChanPoint(&channel.FundingOutpoint) {
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return lnwallet.NewLightningChannel(
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cc.signer, s.witnessBeacon,
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channel,
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)
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}
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}
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return nil, fmt.Errorf("unable to find channel")
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},
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DefaultRoutingPolicy: cc.routingPolicy,
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NumRequiredConfs: func(chanAmt btcutil.Amount,
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pushAmt lnwire.MilliSatoshi) uint16 {
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// For large channels we increase the number
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// of confirmations we require for the
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// channel to be considered open. As it is
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// always the responder that gets to choose
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// value, the pushAmt is value being pushed
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// to us. This means we have more to lose
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// in the case this gets re-orged out, and
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// we will require more confirmations before
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// we consider it open.
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// TODO(halseth): Use Litecoin params in case
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// of LTC channels.
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// In case the user has explicitly specified
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// a default value for the number of
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// confirmations, we use it.
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defaultConf := uint16(chainCfg.DefaultNumChanConfs)
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if defaultConf != 0 {
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return defaultConf
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}
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// If not we return a value scaled linearly
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// between 3 and 6, depending on channel size.
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// TODO(halseth): Use 1 as minimum?
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minConf := uint64(3)
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maxConf := uint64(6)
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maxChannelSize := uint64(
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lnwire.NewMSatFromSatoshis(maxFundingAmount))
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stake := lnwire.NewMSatFromSatoshis(chanAmt) + pushAmt
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conf := maxConf * uint64(stake) / maxChannelSize
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if conf < minConf {
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conf = minConf
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}
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if conf > maxConf {
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conf = maxConf
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}
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return uint16(conf)
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},
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RequiredRemoteDelay: func(chanAmt btcutil.Amount) uint16 {
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// We scale the remote CSV delay (the time the
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// remote have to claim funds in case of a unilateral
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// close) linearly from minRemoteDelay blocks
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// for small channels, to maxRemoteDelay blocks
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// for channels of size maxFundingAmount.
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// TODO(halseth): Litecoin parameter for LTC.
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// In case the user has explicitly specified
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// a default value for the remote delay, we
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// use it.
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defaultDelay := uint16(chainCfg.DefaultRemoteDelay)
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if defaultDelay > 0 {
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return defaultDelay
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}
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// If not we scale according to channel size.
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delay := uint16(btcutil.Amount(maxRemoteDelay) *
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chanAmt / maxFundingAmount)
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if delay < minRemoteDelay {
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delay = minRemoteDelay
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}
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if delay > maxRemoteDelay {
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delay = maxRemoteDelay
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}
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return delay
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},
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WatchNewChannel: func(channel *channeldb.OpenChannel,
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peerKey *btcec.PublicKey) error {
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// First, we'll mark this new peer as a persistent peer
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// for re-connection purposes.
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s.mu.Lock()
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pubStr := string(peerKey.SerializeCompressed())
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s.persistentPeers[pubStr] = struct{}{}
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s.mu.Unlock()
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// With that taken care of, we'll send this channel to
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// the chain arb so it can react to on-chain events.
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return s.chainArb.WatchNewChannel(channel)
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},
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ReportShortChanID: func(chanPoint wire.OutPoint) error {
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cid := lnwire.NewChanIDFromOutPoint(&chanPoint)
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return s.htlcSwitch.UpdateShortChanID(cid)
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},
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RequiredRemoteChanReserve: func(chanAmt,
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dustLimit btcutil.Amount) btcutil.Amount {
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// By default, we'll require the remote peer to maintain
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// at least 1% of the total channel capacity at all
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// times. If this value ends up dipping below the dust
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// limit, then we'll use the dust limit itself as the
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// reserve as required by BOLT #2.
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reserve := chanAmt / 100
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if reserve < dustLimit {
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reserve = dustLimit
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}
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return reserve
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},
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RequiredRemoteMaxValue: func(chanAmt btcutil.Amount) lnwire.MilliSatoshi {
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// By default, we'll allow the remote peer to fully
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// utilize the full bandwidth of the channel, minus our
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// required reserve.
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reserve := lnwire.NewMSatFromSatoshis(chanAmt / 100)
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return lnwire.NewMSatFromSatoshis(chanAmt) - reserve
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},
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RequiredRemoteMaxHTLCs: func(chanAmt btcutil.Amount) uint16 {
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// By default, we'll permit them to utilize the full
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// channel bandwidth.
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return uint16(lnwallet.MaxHTLCNumber / 2)
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},
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ZombieSweeperInterval: 1 * time.Minute,
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ReservationTimeout: 10 * time.Minute,
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MinChanSize: btcutil.Amount(cfg.MinChanSize),
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})
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if err != nil {
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return nil, err
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}
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// Create the connection manager which will be responsible for
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// maintaining persistent outbound connections and also accepting new
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// incoming connections
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@ -752,6 +932,9 @@ func (s *server) Start() error {
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if err := s.chanRouter.Start(); err != nil {
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return err
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}
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if err := s.fundingMgr.Start(); err != nil {
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return err
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}
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s.connMgr.Start()
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if err := s.invoices.Start(); err != nil {
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@ -820,6 +1003,7 @@ func (s *server) Stop() error {
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s.connMgr.Stop()
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s.cc.feeEstimator.Stop()
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s.invoices.Stop()
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s.fundingMgr.Stop()
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// Disconnect from each active peers to ensure that
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// peerTerminationWatchers signal completion to each peer.
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