sweep: add list sweeps function

sweep/sweeper.go

@@ -9,6 +9,7 @@ import (
 	"sync/atomic"
 	"time"
 
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
 	"github.com/btcsuite/btcd/wire"
 	"github.com/btcsuite/btcutil"
 	"github.com/davecgh/go-spew/spew"
@@ -1262,6 +1263,11 @@ func DefaultNextAttemptDeltaFunc(attempts int) int32 {
 	return 1 + rand.Int31n(1<<uint(attempts-1))
 }
 
+// ListSweeps returns a list of the the sweeps recorded by the sweep store.
+func (s *UtxoSweeper) ListSweeps() ([]chainhash.Hash, error) {
+	return s.cfg.Store.ListSweeps()
+}
+
 // init initializes the random generator for random input rescheduling.
 func init() {
 	rand.Seed(time.Now().Unix())