swap,sctx,debugapi: add optional gas limit and gas price to cashout (#1455)

pkg/debugapi/balances.go

@@ -19,7 +19,7 @@ var (
 	errCantBalances   = "Cannot get balances"
 	errCantBalance    = "Cannot get balance"
 	errNoBalance      = "No balance for peer"
-	errInvaliAddress = "Invalid address"
+	errInvalidAddress = "Invalid address"
 )
 
 type balanceResponse struct {
@@ -59,7 +59,7 @@ func (s *Service) peerBalanceHandler(w http.ResponseWriter, r *http.Request) {
 	if err != nil {
 		s.logger.Debugf("debug api: balances peer: invalid peer address %s: %v", addr, err)
 		s.logger.Errorf("debug api: balances peer: invalid peer address %s", addr)
-		jsonhttp.NotFound(w, errInvaliAddress)
+		jsonhttp.NotFound(w, errInvalidAddress)
 		return
 	}
 
@@ -109,7 +109,7 @@ func (s *Service) compensatedPeerBalanceHandler(w http.ResponseWriter, r *http.R
 	if err != nil {
 		s.logger.Debugf("debug api: compensated balances peer: invalid peer address %s: %v", addr, err)
 		s.logger.Errorf("debug api: compensated balances peer: invalid peer address %s", addr)
-		jsonhttp.NotFound(w, errInvaliAddress)
+		jsonhttp.NotFound(w, errInvalidAddress)
 		return
 	}
 

pkg/debugapi/balances_test.go

@@ -136,7 +136,7 @@ func TestBalancesInvalidAddress(t *testing.T) {
 
 	jsonhttptest.Request(t, testServer.Client, http.MethodGet, "/balances/"+peer, http.StatusNotFound,
 		jsonhttptest.WithExpectedJSONResponse(jsonhttp.StatusResponse{
-			Message: debugapi.ErrInvaliAddress,
+			Message: debugapi.ErrInvalidAddress,
 			Code:    http.StatusNotFound,
 		}),
 	)
@@ -289,7 +289,7 @@ func TestConsumedInvalidAddress(t *testing.T) {
 
 	jsonhttptest.Request(t, testServer.Client, http.MethodGet, "/consumed/"+peer, http.StatusNotFound,
 		jsonhttptest.WithExpectedJSONResponse(jsonhttp.StatusResponse{
-			Message: debugapi.ErrInvaliAddress,
+			Message: debugapi.ErrInvalidAddress,
 			Code:    http.StatusNotFound,
 		}),
 	)

pkg/debugapi/chequebook.go

@@ -8,9 +8,11 @@ import (
 	"errors"
 	"math/big"
 	"net/http"
+	"strconv"
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethersphere/bee/pkg/jsonhttp"
+	"github.com/ethersphere/bee/pkg/sctx"
 	"github.com/ethersphere/bee/pkg/settlement/swap/chequebook"
 
 	"github.com/ethersphere/bee/pkg/swarm"
@@ -29,6 +31,11 @@ var (
 	errCannotCashStatus            = "cannot get cashout status"
 	errNoCashout                   = "no prior cashout"
 	errNoCheque                    = "no prior cheque"
+	errBadGasPrice                 = "bad gas price"
+	errBadGasLimit                 = "bad gas limit"
+
+	gasPriceHeader = "Gas-Price"
+	gasLimitHeader = "Gas-Limit"
 )
 
 type chequebookBalanceResponse struct {
@@ -87,7 +94,7 @@ func (s *Service) chequebookLastPeerHandler(w http.ResponseWriter, r *http.Reque
 	if err != nil {
 		s.logger.Debugf("debug api: chequebook cheque peer: invalid peer address %s: %v", addr, err)
 		s.logger.Errorf("debug api: chequebook cheque peer: invalid peer address %s", addr)
-		jsonhttp.NotFound(w, errInvaliAddress)
+		jsonhttp.NotFound(w, errInvalidAddress)
 		return
 	}
 
@@ -200,11 +207,33 @@ func (s *Service) swapCashoutHandler(w http.ResponseWriter, r *http.Request) {
 	if err != nil {
 		s.logger.Debugf("debug api: cashout peer: invalid peer address %s: %v", addr, err)
 		s.logger.Errorf("debug api: cashout peer: invalid peer address %s", addr)
-		jsonhttp.NotFound(w, errInvaliAddress)
+		jsonhttp.NotFound(w, errInvalidAddress)
+		return
+	}
+
+	ctx := r.Context()
+	if price, ok := r.Header[gasPriceHeader]; ok {
+		p, ok := big.NewInt(0).SetString(price[0], 10)
+		if !ok {
+			s.logger.Error("debug api: cashout peer: bad gas price")
+			jsonhttp.BadRequest(w, errBadGasPrice)
 			return
 		}
+		ctx = sctx.SetGasPrice(ctx, p)
+	}
+
+	if limit, ok := r.Header[gasLimitHeader]; ok {
+		l, err := strconv.ParseUint(limit[0], 10, 64)
+		if err != nil {
+			s.logger.Debugf("debug api: cashout peer: bad gas limit: %v", err)
+			s.logger.Error("debug api: cashout peer: bad gas limit")
+			jsonhttp.BadRequest(w, errBadGasLimit)
+			return
+		}
+		ctx = sctx.SetGasLimit(ctx, l)
+	}
 
-	txHash, err := s.swap.CashCheque(r.Context(), peer)
+	txHash, err := s.swap.CashCheque(ctx, peer)
 	if err != nil {
 		s.logger.Debugf("debug api: cashout peer: cannot cash %s: %v", addr, err)
 		s.logger.Errorf("debug api: cashout peer: cannot cash %s", addr)
@@ -236,7 +265,7 @@ func (s *Service) swapCashoutStatusHandler(w http.ResponseWriter, r *http.Reques
 	if err != nil {
 		s.logger.Debugf("debug api: cashout status peer: invalid peer address %s: %v", addr, err)
 		s.logger.Errorf("debug api: cashout status peer: invalid peer address %s", addr)
-		jsonhttp.NotFound(w, errInvaliAddress)
+		jsonhttp.NotFound(w, errInvalidAddress)
 		return
 	}
 

pkg/debugapi/chequebook_test.go

@@ -16,6 +16,7 @@ import (
 	"github.com/ethersphere/bee/pkg/debugapi"
 	"github.com/ethersphere/bee/pkg/jsonhttp"
 	"github.com/ethersphere/bee/pkg/jsonhttp/jsonhttptest"
+	"github.com/ethersphere/bee/pkg/sctx"
 	"github.com/ethersphere/bee/pkg/settlement/swap/chequebook"
 	"github.com/ethersphere/bee/pkg/settlement/swap/chequebook/mock"
 	swapmock "github.com/ethersphere/bee/pkg/settlement/swap/mock"
@@ -433,6 +434,45 @@ func TestChequebookCashout(t *testing.T) {
 	}
 }
 
+func TestChequebookCashout_CustomGas(t *testing.T) {
+
+	addr := swarm.MustParseHexAddress("1000000000000000000000000000000000000000000000000000000000000000")
+	deployCashingHash := common.HexToHash("0xffff")
+
+	var price *big.Int
+	var limit uint64
+	cashChequeFunc := func(ctx context.Context, peer swarm.Address) (common.Hash, error) {
+		price = sctx.GetGasPrice(ctx)
+		limit = sctx.GetGasLimit(ctx)
+		return deployCashingHash, nil
+	}
+
+	testServer := newTestServer(t, testServerOptions{
+		SwapOpts: []swapmock.Option{swapmock.WithCashChequeFunc(cashChequeFunc)},
+	})
+
+	expected := &debugapi.SwapCashoutResponse{TransactionHash: deployCashingHash.String()}
+
+	var got *debugapi.SwapCashoutResponse
+	jsonhttptest.Request(t, testServer.Client, http.MethodPost, "/chequebook/cashout/"+addr.String(), http.StatusOK,
+		jsonhttptest.WithRequestHeader("Gas-Price", "10000"),
+		jsonhttptest.WithRequestHeader("Gas-Limit", "12221"),
+		jsonhttptest.WithUnmarshalJSONResponse(&got),
+	)
+
+	if !reflect.DeepEqual(got, expected) {
+		t.Fatalf("Got: \n %+v \n\n Expected: \n %+v \n\n", got, expected)
+	}
+
+	if price.Cmp(big.NewInt(10000)) != 0 {
+		t.Fatalf("expected gas price 10000 got %s", price)
+	}
+
+	if limit != 12221 {
+		t.Fatalf("expected gas limit 12221 got %d", limit)
+	}
+}
+
 func TestChequebookCashoutStatus(t *testing.T) {
 
 	actionTxHash := common.HexToHash("0xacfe")

pkg/debugapi/export_test.go

@@ -35,5 +35,5 @@ var (
 	ErrCantSettlementsPeer = errCantSettlementsPeer
 	ErrCantSettlements     = errCantSettlements
 	ErrChequebookBalance   = errChequebookBalance
-	ErrInvaliAddress       = errInvaliAddress
+	ErrInvalidAddress      = errInvalidAddress
 )

pkg/debugapi/settlements.go

@@ -94,7 +94,7 @@ func (s *Service) peerSettlementsHandler(w http.ResponseWriter, r *http.Request)
 	if err != nil {
 		s.logger.Debugf("debug api: settlements peer: invalid peer address %s: %v", addr, err)
 		s.logger.Errorf("debug api: settlements peer: invalid peer address %s", addr)
-		jsonhttp.NotFound(w, errInvaliAddress)
+		jsonhttp.NotFound(w, errInvalidAddress)
 		return
 	}
 

pkg/debugapi/settlements_test.go

@@ -182,7 +182,7 @@ func TestSettlementsInvalidAddress(t *testing.T) {
 
 	jsonhttptest.Request(t, testServer.Client, http.MethodGet, "/settlements/"+peer, http.StatusNotFound,
 		jsonhttptest.WithExpectedJSONResponse(jsonhttp.StatusResponse{
-			Message: debugapi.ErrInvaliAddress,
+			Message: debugapi.ErrInvalidAddress,
 			Code:    http.StatusNotFound,
 		}),
 	)

pkg/sctx/sctx.go

@@ -10,6 +10,7 @@ import (
 	"context"
 	"encoding/hex"
 	"errors"
+	"math/big"
 	"strings"
 
 	"github.com/ethersphere/bee/pkg/pss"
@@ -26,6 +27,8 @@ type (
 	requestHostKey    struct{}
 	tagKey            struct{}
 	targetsContextKey struct{}
+	gasPriceKey       struct{}
+	gasLimitKey       struct{}
 )
 
 // SetHost sets the http request host in the context
@@ -84,3 +87,28 @@ func GetTargets(ctx context.Context) pss.Targets {
 	}
 	return targets
 }
+
+func SetGasLimit(ctx context.Context, limit uint64) context.Context {
+	return context.WithValue(ctx, gasLimitKey{}, limit)
+}
+
+func GetGasLimit(ctx context.Context) uint64 {
+	v, ok := ctx.Value(gasLimitKey{}).(uint64)
+	if ok {
+		return v
+	}
+	return 0
+}
+
+func SetGasPrice(ctx context.Context, price *big.Int) context.Context {
+	return context.WithValue(ctx, gasPriceKey{}, price)
+
+}
+
+func GetGasPrice(ctx context.Context) *big.Int {
+	v, ok := ctx.Value(gasPriceKey{}).(*big.Int)
+	if ok {
+		return v
+	}
+	return nil
+}

pkg/settlement/swap/chequebook/cashout.go

@@ -12,6 +12,7 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethersphere/bee/pkg/sctx"
 	"github.com/ethersphere/bee/pkg/settlement/swap/transaction"
 	"github.com/ethersphere/bee/pkg/storage"
 )
@@ -100,12 +101,16 @@ func (s *cashoutService) CashCheque(ctx context.Context, chequebook, recipient c
 	if err != nil {
 		return common.Hash{}, err
 	}
-
+	lim := sctx.GetGasLimit(ctx)
+	if lim == 0 {
+		// fix for out of gas errors
+		lim = 300000
+	}
 	request := &transaction.TxRequest{
 		To:       &chequebook,
 		Data:     callData,
-		GasPrice: nil,
-		GasLimit: 0,
+		GasPrice: sctx.GetGasPrice(ctx),
+		GasLimit: lim,
 		Value:    big.NewInt(0),
 	}