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fundingmanager: move startup state check into advanceFundingState method
This commit extracts the funding state check we do at startup into a new method advanceFundingState. In later commits we will modify this method to work for all funding state machine flows, not only on restart.
This commit is contained in:
Johan T. Halseth
parent
e189f78567
commit
08cb313934
1 changed files with 110 additions and 96 deletions
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@ -598,104 +598,10 @@ func (f *fundingManager) start() error {
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}
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for _, channel := range openChannels {
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channelState, shortChanID, err := f.getChannelOpeningState(
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&channel.FundingOutpoint)
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if err == ErrChannelNotFound {
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// Channel not in fundingManager's opening database,
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// meaning it was successfully announced to the
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// network.
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continue
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} else if err != nil {
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err = f.advanceFundingState(channel)
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if err != nil {
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return err
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}
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chanID := lnwire.NewChanIDFromOutPoint(&channel.FundingOutpoint)
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fndgLog.Debugf("channel (%v) with opening state %v found",
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chanID, channelState)
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// If we did find the channel in the opening state database, we
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// have seen the funding transaction being confirmed, but we
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// did not finish the rest of the setup procedure before we shut
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// down. We handle the remaining steps of this setup by
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// continuing the procedure where we left off.
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switch channelState {
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case markedOpen:
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// The funding transaction was confirmed, but we did not
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// successfully send the fundingLocked message to the
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// peer, so let's do that now.
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f.wg.Add(1)
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go func(dbChan *channeldb.OpenChannel) {
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defer f.wg.Done()
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peerChan := make(chan lnpeer.Peer, 1)
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var peerKey [33]byte
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copy(peerKey[:], dbChan.IdentityPub.SerializeCompressed())
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f.cfg.NotifyWhenOnline(peerKey, peerChan)
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var peer lnpeer.Peer
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select {
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case peer = <-peerChan:
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case <-f.quit:
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return
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}
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err := f.handleFundingConfirmation(
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peer, dbChan, shortChanID,
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)
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if err != nil {
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fndgLog.Errorf("Failed to handle "+
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"funding confirmation: %v", err)
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return
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}
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}(channel)
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case fundingLockedSent:
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// fundingLocked was sent to peer, but the channel
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// was not added to the router graph and the channel
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// announcement was not sent.
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f.wg.Add(1)
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go func(dbChan *channeldb.OpenChannel) {
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defer f.wg.Done()
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err = f.addToRouterGraph(dbChan, shortChanID)
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if err != nil {
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fndgLog.Errorf("failed adding to "+
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"router graph: %v", err)
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return
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}
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// TODO(halseth): should create a state machine
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// that can more easily be resumed from
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// different states, to avoid this code
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// duplication.
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err = f.annAfterSixConfs(dbChan, shortChanID)
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if err != nil {
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fndgLog.Errorf("error sending channel "+
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"announcements: %v", err)
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return
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}
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}(channel)
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case addedToRouterGraph:
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// The channel was added to the Router's topology, but
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// the channel announcement was not sent.
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f.wg.Add(1)
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go func(dbChan *channeldb.OpenChannel) {
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defer f.wg.Done()
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err = f.annAfterSixConfs(dbChan, shortChanID)
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if err != nil {
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fndgLog.Errorf("error sending channel "+
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"announcement: %v", err)
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return
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}
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}(channel)
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default:
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fndgLog.Errorf("undefined channelState: %v",
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channelState)
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}
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}
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f.wg.Add(1) // TODO(roasbeef): tune
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@ -920,6 +826,114 @@ func (f *fundingManager) reservationCoordinator() {
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}
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}
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// advanceFundingState will advance the channel fromt the markedOpen state to
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// the point where the channel is ready for operation. This includes sending
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// funding locked to the peer, adding the channel to the router graph, and
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// announcing the channel.
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func (f *fundingManager) advanceFundingState(
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channel *channeldb.OpenChannel) error {
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channelState, shortChanID, err := f.getChannelOpeningState(
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&channel.FundingOutpoint)
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if err == ErrChannelNotFound {
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// Channel not in fundingManager's opening database,
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// meaning it was successfully announced to the
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// network.
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return nil
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} else if err != nil {
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return err
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}
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chanID := lnwire.NewChanIDFromOutPoint(&channel.FundingOutpoint)
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fndgLog.Debugf("channel (%v) with opening state %v found",
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chanID, channelState)
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// If we did find the channel in the opening state database, we have
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// seen the funding transaction being confirmed, but we did not finish
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// the rest of the setup procedure before we shut down. We handle the
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// remaining steps of this setup by continuing the procedure where we
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// left off.
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switch channelState {
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// The funding transaction was confirmed, but we did not successfully
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// send the fundingLocked message to the peer, so let's do that now.
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case markedOpen:
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f.wg.Add(1)
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go func(dbChan *channeldb.OpenChannel) {
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defer f.wg.Done()
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peerChan := make(chan lnpeer.Peer, 1)
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var peerKey [33]byte
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copy(peerKey[:], dbChan.IdentityPub.SerializeCompressed())
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f.cfg.NotifyWhenOnline(peerKey, peerChan)
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var peer lnpeer.Peer
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select {
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case peer = <-peerChan:
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case <-f.quit:
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return
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}
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err := f.handleFundingConfirmation(
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peer, dbChan, shortChanID,
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)
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if err != nil {
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fndgLog.Errorf("Failed to handle "+
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"funding confirmation: %v", err)
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return
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}
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}(channel)
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// fundingLocked was sent to peer, but the channel was not added to the
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// router graph and the channel announcement was not sent.
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case fundingLockedSent:
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f.wg.Add(1)
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go func(dbChan *channeldb.OpenChannel) {
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defer f.wg.Done()
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err = f.addToRouterGraph(dbChan, shortChanID)
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if err != nil {
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fndgLog.Errorf("failed adding to "+
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"router graph: %v", err)
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return
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}
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// TODO(halseth): should create a state machine
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// that can more easily be resumed from
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// different states, to avoid this code
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// duplication.
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err = f.annAfterSixConfs(dbChan, shortChanID)
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if err != nil {
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fndgLog.Errorf("error sending channel "+
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"announcements: %v", err)
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return
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}
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}(channel)
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// The channel was added to the Router's topology, but the channel
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// announcement was not sent.
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case addedToRouterGraph:
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f.wg.Add(1)
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go func(dbChan *channeldb.OpenChannel) {
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defer f.wg.Done()
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err = f.annAfterSixConfs(dbChan, shortChanID)
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if err != nil {
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fndgLog.Errorf("error sending channel "+
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"announcement: %v", err)
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return
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}
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}(channel)
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default:
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return fmt.Errorf("undefined channelState: %v",
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channelState)
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}
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return nil
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}
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// handlePendingChannels responds to a request for details concerning all
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// currently pending channels waiting for the final phase of the funding
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// workflow (funding txn confirmation).
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