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https://github.com/lightningnetwork/lnd.git
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2a614cc596
Follow up labelling of external transactions with labels for the transaction types we create within lnd. Since these labels will live a life of string matching, a version number and rigid format is added so that string matching is less painful. We start out with channel ID, where available, and a transaction "type". External labels, added in a previous PR, are not updated to this new versioned label because they are not lnd-initiated transactions. Label matching can check this case, then check for a version number.
60 lines
1.8 KiB
Go
60 lines
1.8 KiB
Go
package lookout
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import (
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"github.com/btcsuite/btcd/wire"
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"github.com/lightningnetwork/lnd/labels"
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)
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// PunisherConfig houses the resources required by the Punisher.
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type PunisherConfig struct {
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// PublishTx provides the ability to send a signed transaction to the
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// network.
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PublishTx func(*wire.MsgTx, string) error
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// TODO(conner) add DB tracking and spend ntfn registration to see if
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// ours confirmed or not
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}
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// BreachPunisher handles the responsibility of constructing and broadcasting
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// justice transactions. Justice transactions are constructed from previously
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// accepted state updates uploaded by the watchtower's clients.
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type BreachPunisher struct {
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cfg *PunisherConfig
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}
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// NewBreachPunisher constructs a new BreachPunisher given a PunisherConfig.
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func NewBreachPunisher(cfg *PunisherConfig) *BreachPunisher {
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return &BreachPunisher{
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cfg: cfg,
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}
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}
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// Punish constructs a justice transaction given a JusticeDescriptor and
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// publishes is it to the network.
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func (p *BreachPunisher) Punish(desc *JusticeDescriptor, quit <-chan struct{}) error {
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justiceTxn, err := desc.CreateJusticeTxn()
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if err != nil {
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log.Errorf("Unable to create justice txn for "+
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"client=%s with breach-txid=%s: %v",
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desc.SessionInfo.ID, desc.BreachedCommitTx.TxHash(), err)
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return err
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}
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log.Infof("Publishing justice transaction for client=%s with txid=%s",
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desc.SessionInfo.ID, justiceTxn.TxHash())
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label := labels.MakeLabel(labels.LabelTypeJusticeTransaction, nil)
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err = p.cfg.PublishTx(justiceTxn, label)
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if err != nil {
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log.Errorf("Unable to publish justice txn for client=%s"+
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"with breach-txid=%s: %v",
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desc.SessionInfo.ID, desc.BreachedCommitTx.TxHash(), err)
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return err
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}
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// TODO(conner): register for spend and remove from db after
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// confirmation
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return nil
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}
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