staticaddr: withdrawal manager and interface

Author: hieblmi

staticaddr/log.go

@@ -4,6 +4,7 @@ import (
 	"github.com/btcsuite/btclog"
 	"github.com/lightninglabs/loop/staticaddr/address"
 	"github.com/lightninglabs/loop/staticaddr/deposit"
+	"github.com/lightninglabs/loop/staticaddr/withdraw"
 	"github.com/lightningnetwork/lnd/build"
 )
 
@@ -25,4 +26,5 @@ func UseLogger(logger btclog.Logger) {
 	log = logger
 	address.UseLogger(log)
 	deposit.UseLogger(log)
+	withdraw.UseLogger(log)
 }

staticaddr/withdraw/interface.go

@@ -0,0 +1,44 @@
+package withdraw
+
+import (
+	"context"
+
+	"github.com/btcsuite/btcd/wire"
+	"github.com/lightninglabs/loop/fsm"
+	"github.com/lightninglabs/loop/staticaddr/address"
+	"github.com/lightninglabs/loop/staticaddr/deposit"
+	"github.com/lightninglabs/loop/staticaddr/script"
+	"github.com/lightningnetwork/lnd/lnwallet"
+)
+
+const (
+	IdLength = 32
+)
+
+// AddressManager handles fetching of address parameters.
+type AddressManager interface {
+	// GetStaticAddressParameters returns the static address parameters.
+	GetStaticAddressParameters(ctx context.Context) (*address.Parameters,
+		error)
+
+	// GetStaticAddress returns the deposit address for the given
+	// client and server public keys.
+	GetStaticAddress(ctx context.Context) (*script.StaticAddress, error)
+
+	// ListUnspent returns a list of utxos at the static address.
+	ListUnspent(ctx context.Context, minConfs,
+		maxConfs int32) ([]*lnwallet.Utxo, error)
+}
+
+type DepositManager interface {
+	GetActiveDepositsInState(stateFilter fsm.StateType) ([]*deposit.Deposit,
+		error)
+
+	AllOutpointsActiveDeposits(outpoints []wire.OutPoint,
+		stateFilter fsm.StateType) ([]*deposit.Deposit, bool)
+
+	TransitionDeposits(deposits []*deposit.Deposit, event fsm.EventType,
+		expectedFinalState fsm.StateType) error
+
+	UpdateDeposit(d *deposit.Deposit) error
+}

staticaddr/withdraw/log.go

@@ -0,0 +1,15 @@
+package withdraw
+
+import (
+	"github.com/btcsuite/btclog"
+)
+
+// log is a logger that is initialized with no output filters. This means the
+// package will not perform any logging by default until the caller requests it.
+var log btclog.Logger
+
+// UseLogger uses a specified Logger to output package logging info. This should
+// be used in preference to SetLogWriter if the caller is also using btclog.
+func UseLogger(logger btclog.Logger) {
+	log = logger
+}