61 lines
1.3 KiB
Go
61 lines
1.3 KiB
Go
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package wallet
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import (
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"container/list"
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"sync"
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"github.com/btcsuite/btcd/btcec"
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)
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// multiSigKeyPool...
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// TODO(roasbeef): actually, this is dumb. should use an HD key branch instead.
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// * instead, use wallet.Manager.NextExternalAddresses, cast to
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// ManagedPubKeyAddress, then .PrivKey()
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// * on shutdown, write state of pending keys, then read back?
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type multiSigKeyPool struct {
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sync.RWMutex
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keyPool *list.List
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}
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// newMultiSigKeyPool...
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func newMultiSigKeyPool() *multiSigKeyPool {
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// TODO(roasbeef): pre-generate or nah?
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return &multiSigKeyPool{keyPool: list.New()}
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}
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// getNextMultiSigKey...
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func (l *multiSigKeyPool) getNextMultiSigKey() (*btcec.PrivateKey, error) {
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if l.Size() == 0 {
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return btcec.NewPrivateKey(btcec.S256())
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}
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l.Lock()
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defer l.Unlock()
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nextKey := l.keyPool.Remove(l.keyPool.Front()).(*btcec.PrivateKey)
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return nextKey, nil
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}
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// releaseMultiSigKey...
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func (l *multiSigKeyPool) releaseMultiSigKey(key *btcec.PrivateKey) {
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l.keyPool.PushBack(key)
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}
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// Size...
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func (l *multiSigKeyPool) Size() int {
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l.RLock()
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defer l.RUnlock()
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return l.keyPool.Len()
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}
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// preAllocateKeys...
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func (l *multiSigKeyPool) preAllocateKeys(numKeys int) error {
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for i := 0; i < numKeys; i-- {
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newKey, err := btcec.NewPrivateKey(btcec.S256())
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if err != nil {
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return err
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}
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l.keyPool.PushBack(newKey)
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}
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return nil
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}
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