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lnwallet: remove interaction with the btcutil.coinset package

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This commit removes the wrapper functions used to rely on the coinset
package for coin selection. In a future commit the prior behavior will
be replaced by a custom coin selection implementation which estimates
the size of the funding transaction.
This commit is contained in:
Olaoluwa Osuntokun 2016-08-12 15:06:43 -07:00
parent 3c4beddee1
commit a87ddeabdc
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GPG Key ID: 9CC5B105D03521A2
1 changed files with 0 additions and 73 deletions
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73
lnwallet/coin_select.go
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@ -1,73 +0,0 @@
package lnwallet
import (
"encoding/hex"
"github.com/roasbeef/btcd/btcjson"
"github.com/roasbeef/btcd/wire"
"github.com/roasbeef/btcutil"
"github.com/roasbeef/btcutil/coinset"
)
// lnCoin represents a single unspet output. Its purpose is to convert a regular
// output to a struct adhering to the coinset.Coin interface
type lnCoin struct {
hash *wire.ShaHash
index uint32
value btcutil.Amount
pkScript []byte
numConfs int64
valueAge int64
}
func (l *lnCoin) Hash() *wire.ShaHash { return l.hash }
func (l *lnCoin) Index() uint32 { return l.index }
func (l *lnCoin) Value() btcutil.Amount { return l.value }
func (l *lnCoin) PkScript() []byte { return l.pkScript }
func (l *lnCoin) NumConfs() int64 { return l.numConfs }
func (l *lnCoin) ValueAge() int64 { return l.valueAge }
// Ensure lnCoin adheres to the coinset.Coin interface.
var _ coinset.Coin = (*lnCoin)(nil)
// newLnCoin creates a new "coin" from the passed output. Coins are required
// in order to perform coin selection upon.
func newLnCoin(output *btcjson.ListUnspentResult) (coinset.Coin, error) {
txid, err := wire.NewShaHashFromStr(output.TxID)
if err != nil {
return nil, err
}
pkScript, err := hex.DecodeString(output.ScriptPubKey)
if err != nil {
return nil, err
}
return &lnCoin{
hash: txid,
// btcjson.ListUnspentResult shows the amount in BTC,
// translate into Satoshi so coin selection can work properly.
value: btcutil.Amount(output.Amount * 1e8),
index: output.Vout,
pkScript: pkScript,
numConfs: output.Confirmations,
// TODO(roasbeef): output.Amount should be a int64, damn json-RPC :/
valueAge: output.Confirmations * int64(output.Amount),
}, nil
}
// outputsToCoins converts a slice of transaction outputs to a coin-selectable
// slice of "Coins"s.
func outputsToCoins(outputs []*btcjson.ListUnspentResult) ([]coinset.Coin, error) {
coins := make([]coinset.Coin, len(outputs))
for i, output := range outputs {
coin, err := newLnCoin(output)
if err != nil {
return nil, err
}
coins[i] = coin
}
return coins, nil
}