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108 lines
2.1 KiB
Go
108 lines
2.1 KiB
Go
package deposit
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import (
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"crypto/rand"
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"fmt"
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"sync"
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"github.com/btcsuite/btcd/btcutil"
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"github.com/btcsuite/btcd/chaincfg/chainhash"
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"github.com/btcsuite/btcd/wire"
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"github.com/lightninglabs/loop/fsm"
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)
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// ID is a unique identifier for a deposit.
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type ID [IdLength]byte
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// FromByteSlice creates a deposit id from a byte slice.
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func (r *ID) FromByteSlice(b []byte) error {
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if len(b) != IdLength {
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return fmt.Errorf("deposit id must be 32 bytes, got %d, %x",
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len(b), b)
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}
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copy(r[:], b)
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return nil
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}
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// Deposit bundles an utxo at a static address together with manager-relevant
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// data.
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type Deposit struct {
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// ID is the unique identifier of the deposit.
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ID ID
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// State is the current state of the deposit.
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State fsm.StateType
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// The outpoint of the deposit.
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wire.OutPoint
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// Value is the amount of the deposit.
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Value btcutil.Amount
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// ConfirmationHeight is the absolute height at which the deposit was
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// first confirmed.
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ConfirmationHeight int64
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// TimeOutSweepPkScript is the pk script that is used to sweep the
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// deposit to after it is expired.
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TimeOutSweepPkScript []byte
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// ExpirySweepTxid is the transaction id of the expiry sweep.
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ExpirySweepTxid chainhash.Hash
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sync.Mutex
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}
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// IsInPendingState returns true if the deposit is pending.
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func (d *Deposit) IsInPendingState() bool {
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d.Lock()
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defer d.Unlock()
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return !d.IsInFinalState()
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}
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// IsInFinalState returns true if the deposit is final.
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func (d *Deposit) IsInFinalState() bool {
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d.Lock()
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defer d.Unlock()
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return d.State == Expired || d.State == Failed
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}
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func (d *Deposit) isExpired(currentHeight, expiry uint32) bool {
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d.Lock()
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defer d.Unlock()
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return currentHeight >= uint32(d.ConfirmationHeight)+expiry
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}
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func (d *Deposit) getState() fsm.StateType {
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d.Lock()
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defer d.Unlock()
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return d.State
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}
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func (d *Deposit) setState(state fsm.StateType) {
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d.Lock()
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defer d.Unlock()
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d.State = state
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}
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func (d *Deposit) isInState(state fsm.StateType) bool {
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d.Lock()
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defer d.Unlock()
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return d.State == state
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}
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// GetRandomDepositID generates a random deposit ID.
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func GetRandomDepositID() (ID, error) {
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var id ID
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_, err := rand.Read(id[:])
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return id, err
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}
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