From eb4d0e035ed717bd43752761fbb67b3e4bf403b7 Mon Sep 17 00:00:00 2001
From: BitfuryLightning <lightning@bitfury.com>
Date: Mon, 5 Dec 2016 06:59:36 -0500
Subject: [PATCH] channeldb: save outgoing payments

Add structure for outgoing payments. Saving payment in DB
after successful payment send. Add RPC call for listing
all payments.
---
 channeldb/error.go         |   2 +
 channeldb/invoices.go      |  17 +-
 channeldb/payments.go      | 211 +++++++++++++++++
 channeldb/payments_test.go | 163 +++++++++++++
 cmd/lncli/commands.go      |  24 ++
 cmd/lncli/main.go          |   1 +
 lnd_test.go                | 128 ++++++++++
 lnrpc/rpc.pb.go            | 466 +++++++++++++++++++++++++------------
 lnrpc/rpc.pb.gw.go         |  82 +++++++
 lnrpc/rpc.proto            |  36 +++
 lnrpc/rpc.swagger.json     |  78 +++++++
 rpcserver.go               |  77 ++++--
 12 files changed, 1117 insertions(+), 168 deletions(-)
 create mode 100644 channeldb/payments.go
 create mode 100644 channeldb/payments_test.go

diff --git a/channeldb/error.go b/channeldb/error.go
index 036dca01..91422dd2 100644
--- a/channeldb/error.go
+++ b/channeldb/error.go
@@ -14,6 +14,8 @@ var (
 	ErrNoInvoicesCreated = fmt.Errorf("there are no existing invoices")
 	ErrDuplicateInvoice  = fmt.Errorf("invoice with payment hash already exists")
 
+	ErrNoPaymentsCreated = fmt.Errorf("there are no existing payments")
+
 	ErrNodeNotFound = fmt.Errorf("link node with target identity not found")
 	ErrMetaNotFound = fmt.Errorf("unable to locate meta information")
 
diff --git a/channeldb/invoices.go b/channeldb/invoices.go
index 56b7eed5..92ab9330 100644
--- a/channeldb/invoices.go
+++ b/channeldb/invoices.go
@@ -98,11 +98,7 @@ type Invoice struct {
 	Terms ContractTerm
 }
 
-// AddInvoice inserts the targeted invoice into the database. If the invoice
-// has *any* payment hashes which already exists within the database, then the
-// insertion will be aborted and rejected due to the strict policy banning any
-// duplicate payment hashes.
-func (d *DB) AddInvoice(i *Invoice) error {
+func validateInvoice(i *Invoice) error {
 	if len(i.Memo) > MaxMemoSize {
 		return fmt.Errorf("max length a memo is %v, and invoice "+
 			"of length %v was provided", MaxMemoSize, len(i.Memo))
@@ -112,7 +108,18 @@ func (d *DB) AddInvoice(i *Invoice) error {
 			"of length %v was provided", MaxReceiptSize,
 			len(i.Receipt))
 	}
+	return nil
+}
 
+// AddInvoice inserts the targeted invoice into the database. If the invoice
+// has *any* payment hashes which already exists within the database, then the
+// insertion will be aborted and rejected due to the strict policy banning any
+// duplicate payment hashes.
+func (d *DB) AddInvoice(i *Invoice) error {
+	err := validateInvoice(i)
+	if err != nil {
+		return err
+	}
 	return d.Update(func(tx *bolt.Tx) error {
 		invoices, err := tx.CreateBucketIfNotExists(invoiceBucket)
 		if err != nil {
diff --git a/channeldb/payments.go b/channeldb/payments.go
new file mode 100644
index 00000000..5c91300d
--- /dev/null
+++ b/channeldb/payments.go
@@ -0,0 +1,211 @@
+package channeldb
+
+import (
+	"github.com/roasbeef/btcutil"
+	"io"
+	"github.com/roasbeef/btcd/wire"
+	"github.com/boltdb/bolt"
+	"encoding/binary"
+	"bytes"
+)
+
+var (
+	// invoiceBucket is the name of the bucket within the database that
+	// stores all data related to payments.
+	// Within the payments bucket, each invoice is keyed by its invoice ID
+	// which is a monotonically increasing uint64.
+	// BoltDB sequence feature is used for generating monotonically increasing
+	// id.
+	paymentBucket = []byte("payments")
+)
+
+type OutgoingPayment struct {
+	Invoice
+	// Total fee paid
+	Fee btcutil.Amount
+	// Path including starting and ending nodes
+	Path [][]byte
+	TimeLockLength uint64
+	// We probably need both RHash and Preimage
+	// because we start knowing only RHash
+	RHash [32]byte
+}
+
+func validatePayment(p *OutgoingPayment) error {
+	err := validateInvoice(&p.Invoice)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+// AddPayment adds payment to DB.
+// There is no checking that payment with the same hash already exist.
+func (db *DB) AddPayment(p *OutgoingPayment) error {
+	err := validatePayment(p)
+	if err != nil {
+		return err
+	}
+	// We serialize before writing to database
+	// so no db access in the case of serialization errors
+	b := new(bytes.Buffer)
+	err = serializeOutgoingPayment(b, p)
+	if err != nil {
+		return err
+	}
+	paymentBytes := b.Bytes()
+	return db.Update(func (tx *bolt.Tx) error {
+		payments, err := tx.CreateBucketIfNotExists(paymentBucket)
+		if err != nil {
+			return err
+		}
+		paymentId, err := payments.NextSequence()
+		if err != nil {
+			return err
+		}
+		// We use BigEndian for keys because
+		// it orders keys in ascending order
+		paymentIdBytes := make([]byte, 8)
+		binary.BigEndian.PutUint64(paymentIdBytes, paymentId)
+		err = payments.Put(paymentIdBytes, paymentBytes)
+		if err != nil {
+			return err
+		}
+		return nil
+	})
+}
+
+// FetchAllPayments returns all outgoing payments in DB.
+func (db *DB) FetchAllPayments() ([]*OutgoingPayment, error) {
+	var payments []*OutgoingPayment
+	err := db.View(func (tx *bolt.Tx) error {
+		bucket := tx.Bucket(paymentBucket)
+		if bucket == nil {
+			return nil
+		}
+		err := bucket.ForEach(func (k, v []byte) error {
+			// Value can be nil if it is a sub-backet
+			// so simply ignore it.
+			if v == nil {
+				return nil
+			}
+			r := bytes.NewReader(v)
+			payment, err := deserializeOutgoingPayment(r)
+			if err != nil {
+				return err
+			}
+			payments = append(payments, payment)
+			return nil
+		})
+		return err
+	})
+	if err != nil {
+		return nil, err
+	}
+	return payments, nil
+}
+
+// DeleteAllPayments deletes all payments from DB.
+// If payments bucket does not exist it will create
+// new bucket without error.
+func (db *DB) DeleteAllPayments() error {
+	return db.Update(func (tx *bolt.Tx) error {
+		err := tx.DeleteBucket(paymentBucket)
+		if err != nil && err != bolt.ErrBucketNotFound {
+			return err
+		}
+		_, err = tx.CreateBucket(paymentBucket)
+		if err != nil {
+			return err
+		}
+		return err
+	})
+}
+
+func serializeOutgoingPayment(w io.Writer, p *OutgoingPayment) error {
+	err := serializeInvoice(w, &p.Invoice)
+	if err != nil {
+		return err
+	}
+	// Serialize fee.
+	feeBytes := make([]byte, 8)
+	byteOrder.PutUint64(feeBytes, uint64(p.Fee))
+	_, err = w.Write(feeBytes)
+	if err != nil {
+		return err
+	}
+	// Serialize path.
+	pathLen := uint32(len(p.Path))
+	pathLenBytes := make([]byte, 4)
+	byteOrder.PutUint32(pathLenBytes, pathLen)
+	_, err = w.Write(pathLenBytes)
+	if err != nil {
+		return err
+	}
+	for i := uint32(0); i < pathLen; i++ {
+		err := wire.WriteVarBytes(w, 0, p.Path[i])
+		if err != nil {
+			return err
+		}
+	}
+	// Serialize TimeLockLength
+	timeLockLengthBytes := make([]byte, 8)
+	byteOrder.PutUint64(timeLockLengthBytes, p.TimeLockLength)
+	_, err = w.Write(timeLockLengthBytes)
+	if err != nil {
+		return err
+	}
+	// Serialize RHash
+	_, err = w.Write(p.RHash[:])
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func deserializeOutgoingPayment(r io.Reader) (*OutgoingPayment, error) {
+	p := &OutgoingPayment{}
+	// Deserialize invoice
+	inv, err := deserializeInvoice(r)
+	if err != nil {
+		return nil, err
+	}
+	p.Invoice = *inv
+	// Deserialize fee
+	feeBytes := make([]byte, 8)
+	_, err = r.Read(feeBytes)
+	if err != nil {
+		return nil, err
+	}
+	p.Fee = btcutil.Amount(byteOrder.Uint64(feeBytes))
+	// Deserialize path
+	pathLenBytes := make([]byte, 4)
+	_, err = r.Read(pathLenBytes)
+	if err != nil {
+		return nil, err
+	}
+	pathLen := byteOrder.Uint32(pathLenBytes)
+	path := make([][]byte, pathLen)
+	for i := uint32(0); i<pathLen; i++ {
+		// Each node in path have 33 bytes. It may be changed in future.
+		// So put 100 here.
+		path[i], err = wire.ReadVarBytes(r, 0, 100, "Node id")
+		if err != nil {
+			return nil, err
+		}
+	}
+	p.Path = path
+	// Deserialize TimeLockLength
+	timeLockLengthBytes := make([]byte, 8)
+	_, err = r.Read(timeLockLengthBytes)
+	if err != nil {
+		return nil, err
+	}
+	p.TimeLockLength = byteOrder.Uint64(timeLockLengthBytes)
+	// Deserialize RHash
+	_, err = r.Read(p.RHash[:])
+	if err != nil {
+		return nil, err
+	}
+	return p, nil
+}
\ No newline at end of file
diff --git a/channeldb/payments_test.go b/channeldb/payments_test.go
new file mode 100644
index 00000000..1ed9e983
--- /dev/null
+++ b/channeldb/payments_test.go
@@ -0,0 +1,163 @@
+package channeldb
+
+import (
+	"testing"
+	"time"
+	"github.com/roasbeef/btcutil"
+	"bytes"
+	"reflect"
+	"github.com/davecgh/go-spew/spew"
+	"math/rand"
+	"fmt"
+	"github.com/btcsuite/fastsha256"
+)
+
+func makeFakePayment() *OutgoingPayment {
+	// Create a fake invoice which we'll use several times in the tests
+	// below.
+	fakeInvoice := &Invoice{
+		CreationDate: time.Now(),
+	}
+	fakeInvoice.Memo = []byte("memo")
+	fakeInvoice.Receipt = []byte("recipt")
+	copy(fakeInvoice.Terms.PaymentPreimage[:], rev[:])
+	fakeInvoice.Terms.Value = btcutil.Amount(10000)
+	// Make fake path
+	fakePath := make([][]byte, 3)
+	for i:=0; i<3; i++ {
+		fakePath[i] = make([]byte, 33)
+		for j:=0; j<33; j++ {
+			fakePath[i][j] = byte(i)
+		}
+	}
+	var rHash [32]byte = fastsha256.Sum256(rev[:])
+	fakePayment := & OutgoingPayment{
+		Invoice: *fakeInvoice,
+		Fee: 101,
+		Path: fakePath,
+		TimeLockLength: 1000,
+		RHash: rHash,
+	}
+	return fakePayment
+}
+
+// randomBytes creates random []byte with length
+// in range [minLen, maxLen)
+func randomBytes(minLen, maxLen int) []byte {
+	l := minLen + rand.Intn(maxLen-minLen)
+	b := make([]byte, l)
+	_, err := rand.Read(b)
+	if err != nil {
+		panic(fmt.Sprintf("Internal error. Cannot generate random string: %v", err))
+	}
+	return b
+}
+
+func makeRandomFakePayment() *OutgoingPayment {
+	// Create a fake invoice which we'll use several times in the tests
+	// below.
+	fakeInvoice := &Invoice{
+		CreationDate: time.Now(),
+	}
+	fakeInvoice.Memo = randomBytes(1, 50)
+	fakeInvoice.Receipt = randomBytes(1, 50)
+	copy(fakeInvoice.Terms.PaymentPreimage[:], randomBytes(32, 33))
+	fakeInvoice.Terms.Value = btcutil.Amount(rand.Intn(10000))
+	// Make fake path
+	fakePathLen := 1 + rand.Intn(5)
+	fakePath := make([][]byte, fakePathLen)
+	for i:=0; i<fakePathLen; i++ {
+		fakePath[i] = randomBytes(33, 34)
+	}
+	var rHash [32]byte = fastsha256.Sum256(
+		fakeInvoice.Terms.PaymentPreimage[:],
+	)
+	fakePayment := & OutgoingPayment{
+		Invoice: *fakeInvoice,
+		Fee: btcutil.Amount(rand.Intn(1001)),
+		Path: fakePath,
+		TimeLockLength: uint64(rand.Intn(10000)),
+		RHash: rHash,
+	}
+	return fakePayment
+}
+
+func TestOutgoingPaymentSerialization(t *testing.T) {
+	fakePayment := makeFakePayment()
+	b := new(bytes.Buffer)
+	err := serializeOutgoingPayment(b, fakePayment)
+	if err != nil {
+		t.Fatalf("Can't serialize outgoing payment: %v", err)
+	}
+	newPayment, err := deserializeOutgoingPayment(b)
+	if err != nil {
+		t.Fatalf("Can't deserialize outgoing payment: %v", err)
+	}
+	if !reflect.DeepEqual(fakePayment, newPayment) {
+		t.Fatalf("Payments do not match after serialization/deserialization %v vs %v",
+			spew.Sdump(fakePayment),
+			spew.Sdump(newPayment),
+		)
+	}
+}
+
+func TestOutgoingPaymentWorkflow(t *testing.T) {
+	db, cleanUp, err := makeTestDB()
+	if err != nil {
+		t.Fatalf("unable to make test db: %v", err)
+	}
+	defer cleanUp()
+
+	fakePayment := makeFakePayment()
+	err = db.AddPayment(fakePayment)
+	if err != nil {
+		t.Fatalf("Can't put payment in DB: %v", err)
+	}
+
+	payments, err := db.FetchAllPayments()
+	if err != nil {
+		t.Fatalf("Can't get payments from DB: %v", err)
+	}
+	correctPayments := []*OutgoingPayment{fakePayment}
+	if !reflect.DeepEqual(payments, correctPayments) {
+		t.Fatalf("Wrong payments after reading from DB."+
+			"Got %v, want %v",
+			spew.Sdump(payments),
+			spew.Sdump(correctPayments),
+		)
+	}
+
+	// Make some random payments
+	for i:=0; i<5; i++ {
+		randomPayment := makeRandomFakePayment()
+		err := db.AddPayment(randomPayment)
+		if err != nil {
+			t.Fatalf("Can't put payment in DB: %v", err)
+		}
+		correctPayments = append(correctPayments, randomPayment)
+	}
+	payments, err = db.FetchAllPayments()
+	if err != nil {
+		t.Fatalf("Can't get payments from DB: %v", err)
+	}
+	if !reflect.DeepEqual(payments, correctPayments) {
+		t.Fatalf("Wrong payments after reading from DB."+
+			"Got %v, want %v",
+			spew.Sdump(payments),
+			spew.Sdump(correctPayments),
+		)
+	}
+
+	// Delete all payments.
+	err = db.DeleteAllPayments()
+	if err != nil {
+		t.Fatalf("Can't delete payments from DB: %v", err)
+	}
+	paymentsAfterDeletion, err := db.FetchAllPayments()
+	if err != nil {
+		t.Fatalf("Can't get payments after deletion: %v", err)
+	}
+	if len(paymentsAfterDeletion) != 0 {
+		t.Fatalf("After deletion DB has %v payments, want %v", len(paymentsAfterDeletion), 0)
+	}
+}
diff --git a/cmd/lncli/commands.go b/cmd/lncli/commands.go
index b6e0c12d..e257376e 100644
--- a/cmd/lncli/commands.go
+++ b/cmd/lncli/commands.go
@@ -1076,3 +1076,27 @@ func printRTAsJSON(r *rt.RoutingTable) {
 	}
 	printRespJson(channels)
 }
+
+
+
+var ListPaymentsCommand = cli.Command{
+	Name:        "listpayments",
+	Usage:       "listpayments",
+	Description: "list all outgoing payments",
+	Action: listPayments,
+}
+
+func listPayments(ctx *cli.Context) error {
+	client := getClient(ctx)
+
+	req := &lnrpc.ListPaymentsRequest{}
+
+	payments, err := client.ListPayments(context.Background(), req)
+	if err != nil {
+		return err
+	}
+
+	printRespJson(payments)
+
+	return nil
+}
\ No newline at end of file
diff --git a/cmd/lncli/main.go b/cmd/lncli/main.go
index 5a6a855a..3a222fd2 100644
--- a/cmd/lncli/main.go
+++ b/cmd/lncli/main.go
@@ -66,6 +66,7 @@ func main() {
 		ListInvoicesCommand,
 		ShowRoutingTableCommand,
 		ListChannelsCommand,
+		ListPaymentsCommand,
 	}
 
 	if err := app.Run(os.Args); err != nil {
diff --git a/lnd_test.go b/lnd_test.go
index 9951c266..648c5c12 100644
--- a/lnd_test.go
+++ b/lnd_test.go
@@ -24,6 +24,8 @@ import (
 	"github.com/roasbeef/btcutil"
 	"golang.org/x/net/context"
 	"google.golang.org/grpc"
+	"reflect"
+	"encoding/hex"
 )
 
 // harnessTest wraps a regular testing.T providing enhanced error detection
@@ -491,6 +493,128 @@ func testSingleHopInvoice(net *networkHarness, t *harnessTest) {
 	closeChannelAndAssert(t, net, ctxt, net.Alice, chanPoint, false)
 }
 
+func testListPayments(net *networkHarness, t *harnessTest) {
+	ctxb := context.Background()
+	timeout := time.Duration(time.Second * 5)
+	ctxt, _ := context.WithTimeout(ctxb, timeout)
+
+	// Delete all payments from Alice. DB should have no payments
+	deleteAllPaymentsInitialReq := &lnrpc.DeleteAllPaymentsRequest{}
+	_, err := net.Alice.DeleteAllPayments(ctxt, deleteAllPaymentsInitialReq)
+	if err != nil {
+		t.Fatalf("Can't delete payments at the begining: %v", err)
+	}
+
+	// Check that there are no payments before test.
+	reqInit := &lnrpc.ListPaymentsRequest{}
+	paymentsRespInit, err := net.Alice.ListPayments(ctxt, reqInit)
+	if err != nil {
+		t.Fatalf("error when obtaining Alice payments: %v", err)
+	}
+	if len(paymentsRespInit.Payments) != 0 {
+		t.Fatalf("incorrect number of payments, got %v, want %v", len(paymentsRespInit.Payments), 0)
+	}
+
+	// Open a channel with 100k satoshis between Alice and Bob with Alice being
+	// the sole funder of the channel.
+
+	chanAmt := btcutil.Amount(100000)
+	chanPoint := openChannelAndAssert(t, net, ctxt, net.Alice, net.Bob, chanAmt)
+
+	// Now that the channel is open, create an invoice for Bob which
+	// expects a payment of 1000 satoshis from Alice paid via a particular
+	// pre-image.
+	const paymentAmt = 1000
+	preimage := bytes.Repeat([]byte("B"), 32)
+	invoice := &lnrpc.Invoice{
+		Memo:      "testing",
+		RPreimage: preimage,
+		Value:     paymentAmt,
+	}
+	invoiceResp, err := net.Bob.AddInvoice(ctxt, invoice)
+	if err != nil {
+		t.Fatalf("unable to add invoice: %v", err)
+	}
+
+	// With the invoice for Bob added, send a payment towards Alice paying
+	// to the above generated invoice.
+	sendStream, err := net.Alice.SendPayment(ctxt)
+	if err != nil {
+		t.Fatalf("unable to create alice payment stream: %v", err)
+	}
+	sendReq := &lnrpc.SendRequest{
+		PaymentHash: invoiceResp.RHash,
+		Dest:        net.Bob.PubKey[:],
+		Amt:         paymentAmt,
+	}
+	if err := sendStream.Send(sendReq); err != nil {
+		t.Fatalf("unable to send payment: %v", err)
+	}
+	if _, err := sendStream.Recv(); err != nil {
+		t.Fatalf("error when attempting recv: %v", err)
+	}
+
+	// We doesn't check different states of parties
+	// like balance here because it is already checked in
+	// testSingleHopInvoice
+	req := &lnrpc.ListPaymentsRequest{}
+	paymentsResp, err := net.Alice.ListPayments(ctxt, req)
+	if err != nil {
+		t.Fatalf("error when obtaining Alice payments: %v", err)
+	}
+	if len(paymentsResp.Payments) != 1 {
+		t.Fatalf("incorrect number of payments, got %v, want %v", len(paymentsResp.Payments), 1)
+	}
+	p := paymentsResp.Payments[0]
+
+	// Check path.
+	expectedPath := []string {
+		net.Alice.PubKeyStr,
+		net.Bob.PubKeyStr,
+	}
+	if !reflect.DeepEqual(p.Path, expectedPath) {
+		t.Fatalf("incorrect path, got %v, want %v", p.Path, expectedPath)
+	}
+
+	// Check amount.
+	if p.Value != paymentAmt {
+		t.Fatalf("incorrect amount, got %v, want %v", p.Value, paymentAmt)
+	}
+
+	// Check RHash.
+	correctRHash := hex.EncodeToString(invoiceResp.RHash)
+	if !reflect.DeepEqual(p.RHash, correctRHash){
+		t.Fatalf("incorrect RHash, got %v, want %v", p.RHash, correctRHash)
+	}
+
+	// Check Fee.
+	// Currently there is no fees so assume value 0 for fees.
+	if p.Fee != 0 {
+		t.Fatalf("incorrect Fee, got %v, want %v", p.Fee, 0)
+	}
+
+	// Delete all payments from Alice. DB should have no payments.
+	deleteAllPaymentsEndReq := &lnrpc.DeleteAllPaymentsRequest{}
+	_, err = net.Alice.DeleteAllPayments(ctxt, deleteAllPaymentsEndReq)
+	if err != nil {
+		t.Fatalf("Can't delete payments at the end: %v", err)
+	}
+
+	// Check that there are no payments before test.
+	reqEnd := &lnrpc.ListPaymentsRequest{}
+	_, err = net.Alice.ListPayments(ctxt, reqEnd)
+	if err != nil {
+		t.Fatalf("error when obtaining Alice payments: %v", err)
+	}
+	if len(paymentsRespInit.Payments) != 0 {
+		t.Fatalf("incorrect number of payments, got %v, want %v", len(paymentsRespInit.Payments), 0)
+	}
+
+
+	ctxt, _ = context.WithTimeout(ctxb, timeout)
+	closeChannelAndAssert(t, net, ctxt, net.Alice, chanPoint, false)
+}
+
 func testMultiHopPayments(net *networkHarness, t *harnessTest) {
 	const chanAmt = btcutil.Amount(100000)
 	ctxb := context.Background()
@@ -1205,6 +1329,10 @@ var testsCases = []*testCase{
 		name: "single hop invoice",
 		test: testSingleHopInvoice,
 	},
+	{
+		name: "list of outgoing payments",
+		test: testListPayments,
+	},
 	{
 		name: "max pending channel",
 		test: testMaxPendingChannels,
diff --git a/lnrpc/rpc.pb.go b/lnrpc/rpc.pb.go
index 1585721a..db05f985 100644
--- a/lnrpc/rpc.pb.go
+++ b/lnrpc/rpc.pb.go
@@ -57,6 +57,11 @@ It has these top-level messages:
 	ListInvoiceRequest
 	ListInvoiceResponse
 	InvoiceSubscription
+	Payment
+	ListPaymentsRequest
+	ListPaymentsResponse
+	DeleteAllPaymentsRequest
+	DeleteAllPaymentsResponse
 */
 package lnrpc
 
@@ -1685,6 +1690,94 @@ func (m *InvoiceSubscription) String() string            { return proto.CompactT
 func (*InvoiceSubscription) ProtoMessage()               {}
 func (*InvoiceSubscription) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{47} }
 
+type Payment struct {
+	RHash        string   `protobuf:"bytes,1,opt,name=r_hash" json:"r_hash,omitempty"`
+	Value        int64    `protobuf:"varint,2,opt,name=value" json:"value,omitempty"`
+	CreationDate int64    `protobuf:"varint,3,opt,name=creation_date" json:"creation_date,omitempty"`
+	Path         []string `protobuf:"bytes,4,rep,name=path" json:"path,omitempty"`
+	Fee          int64    `protobuf:"varint,5,opt,name=fee" json:"fee,omitempty"`
+}
+
+func (m *Payment) Reset()                    { *m = Payment{} }
+func (m *Payment) String() string            { return proto.CompactTextString(m) }
+func (*Payment) ProtoMessage()               {}
+func (*Payment) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{48} }
+
+func (m *Payment) GetRHash() string {
+	if m != nil {
+		return m.RHash
+	}
+	return ""
+}
+
+func (m *Payment) GetValue() int64 {
+	if m != nil {
+		return m.Value
+	}
+	return 0
+}
+
+func (m *Payment) GetCreationDate() int64 {
+	if m != nil {
+		return m.CreationDate
+	}
+	return 0
+}
+
+func (m *Payment) GetPath() []string {
+	if m != nil {
+		return m.Path
+	}
+	return nil
+}
+
+func (m *Payment) GetFee() int64 {
+	if m != nil {
+		return m.Fee
+	}
+	return 0
+}
+
+type ListPaymentsRequest struct {
+}
+
+func (m *ListPaymentsRequest) Reset()                    { *m = ListPaymentsRequest{} }
+func (m *ListPaymentsRequest) String() string            { return proto.CompactTextString(m) }
+func (*ListPaymentsRequest) ProtoMessage()               {}
+func (*ListPaymentsRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{49} }
+
+type ListPaymentsResponse struct {
+	Payments []*Payment `protobuf:"bytes,1,rep,name=payments" json:"payments,omitempty"`
+}
+
+func (m *ListPaymentsResponse) Reset()                    { *m = ListPaymentsResponse{} }
+func (m *ListPaymentsResponse) String() string            { return proto.CompactTextString(m) }
+func (*ListPaymentsResponse) ProtoMessage()               {}
+func (*ListPaymentsResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{50} }
+
+func (m *ListPaymentsResponse) GetPayments() []*Payment {
+	if m != nil {
+		return m.Payments
+	}
+	return nil
+}
+
+type DeleteAllPaymentsRequest struct {
+}
+
+func (m *DeleteAllPaymentsRequest) Reset()                    { *m = DeleteAllPaymentsRequest{} }
+func (m *DeleteAllPaymentsRequest) String() string            { return proto.CompactTextString(m) }
+func (*DeleteAllPaymentsRequest) ProtoMessage()               {}
+func (*DeleteAllPaymentsRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{51} }
+
+type DeleteAllPaymentsResponse struct {
+}
+
+func (m *DeleteAllPaymentsResponse) Reset()                    { *m = DeleteAllPaymentsResponse{} }
+func (m *DeleteAllPaymentsResponse) String() string            { return proto.CompactTextString(m) }
+func (*DeleteAllPaymentsResponse) ProtoMessage()               {}
+func (*DeleteAllPaymentsResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{52} }
+
 func init() {
 	proto.RegisterType((*Transaction)(nil), "lnrpc.Transaction")
 	proto.RegisterType((*GetTransactionsRequest)(nil), "lnrpc.GetTransactionsRequest")
@@ -1735,6 +1828,11 @@ func init() {
 	proto.RegisterType((*ListInvoiceRequest)(nil), "lnrpc.ListInvoiceRequest")
 	proto.RegisterType((*ListInvoiceResponse)(nil), "lnrpc.ListInvoiceResponse")
 	proto.RegisterType((*InvoiceSubscription)(nil), "lnrpc.InvoiceSubscription")
+	proto.RegisterType((*Payment)(nil), "lnrpc.Payment")
+	proto.RegisterType((*ListPaymentsRequest)(nil), "lnrpc.ListPaymentsRequest")
+	proto.RegisterType((*ListPaymentsResponse)(nil), "lnrpc.ListPaymentsResponse")
+	proto.RegisterType((*DeleteAllPaymentsRequest)(nil), "lnrpc.DeleteAllPaymentsRequest")
+	proto.RegisterType((*DeleteAllPaymentsResponse)(nil), "lnrpc.DeleteAllPaymentsResponse")
 	proto.RegisterEnum("lnrpc.ChannelStatus", ChannelStatus_name, ChannelStatus_value)
 	proto.RegisterEnum("lnrpc.NewAddressRequest_AddressType", NewAddressRequest_AddressType_name, NewAddressRequest_AddressType_value)
 }
@@ -1774,6 +1872,8 @@ type LightningClient interface {
 	LookupInvoice(ctx context.Context, in *PaymentHash, opts ...grpc.CallOption) (*Invoice, error)
 	SubscribeInvoices(ctx context.Context, in *InvoiceSubscription, opts ...grpc.CallOption) (Lightning_SubscribeInvoicesClient, error)
 	ShowRoutingTable(ctx context.Context, in *ShowRoutingTableRequest, opts ...grpc.CallOption) (*ShowRoutingTableResponse, error)
+	ListPayments(ctx context.Context, in *ListPaymentsRequest, opts ...grpc.CallOption) (*ListPaymentsResponse, error)
+	DeleteAllPayments(ctx context.Context, in *DeleteAllPaymentsRequest, opts ...grpc.CallOption) (*DeleteAllPaymentsResponse, error)
 }
 
 type lightningClient struct {
@@ -2105,6 +2205,24 @@ func (c *lightningClient) ShowRoutingTable(ctx context.Context, in *ShowRoutingT
 	return out, nil
 }
 
+func (c *lightningClient) ListPayments(ctx context.Context, in *ListPaymentsRequest, opts ...grpc.CallOption) (*ListPaymentsResponse, error) {
+	out := new(ListPaymentsResponse)
+	err := grpc.Invoke(ctx, "/lnrpc.Lightning/ListPayments", in, out, c.cc, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *lightningClient) DeleteAllPayments(ctx context.Context, in *DeleteAllPaymentsRequest, opts ...grpc.CallOption) (*DeleteAllPaymentsResponse, error) {
+	out := new(DeleteAllPaymentsResponse)
+	err := grpc.Invoke(ctx, "/lnrpc.Lightning/DeleteAllPayments", in, out, c.cc, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // Server API for Lightning service
 
 type LightningServer interface {
@@ -2132,6 +2250,8 @@ type LightningServer interface {
 	LookupInvoice(context.Context, *PaymentHash) (*Invoice, error)
 	SubscribeInvoices(*InvoiceSubscription, Lightning_SubscribeInvoicesServer) error
 	ShowRoutingTable(context.Context, *ShowRoutingTableRequest) (*ShowRoutingTableResponse, error)
+	ListPayments(context.Context, *ListPaymentsRequest) (*ListPaymentsResponse, error)
+	DeleteAllPayments(context.Context, *DeleteAllPaymentsRequest) (*DeleteAllPaymentsResponse, error)
 }
 
 func RegisterLightningServer(s *grpc.Server, srv LightningServer) {
@@ -2572,6 +2692,42 @@ func _Lightning_ShowRoutingTable_Handler(srv interface{}, ctx context.Context, d
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Lightning_ListPayments_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ListPaymentsRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(LightningServer).ListPayments(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/lnrpc.Lightning/ListPayments",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(LightningServer).ListPayments(ctx, req.(*ListPaymentsRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Lightning_DeleteAllPayments_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(DeleteAllPaymentsRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(LightningServer).DeleteAllPayments(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/lnrpc.Lightning/DeleteAllPayments",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(LightningServer).DeleteAllPayments(ctx, req.(*DeleteAllPaymentsRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var _Lightning_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "lnrpc.Lightning",
 	HandlerType: (*LightningServer)(nil),
@@ -2648,6 +2804,14 @@ var _Lightning_serviceDesc = grpc.ServiceDesc{
 			MethodName: "ShowRoutingTable",
 			Handler:    _Lightning_ShowRoutingTable_Handler,
 		},
+		{
+			MethodName: "ListPayments",
+			Handler:    _Lightning_ListPayments_Handler,
+		},
+		{
+			MethodName: "DeleteAllPayments",
+			Handler:    _Lightning_DeleteAllPayments_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{
@@ -2683,152 +2847,158 @@ var _Lightning_serviceDesc = grpc.ServiceDesc{
 func init() { proto.RegisterFile("rpc.proto", fileDescriptor0) }
 
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+	0x76, 0x78, 0xd9, 0x0c, 0x14, 0x4c, 0x49, 0x35, 0x83, 0x0c, 0xae, 0x49, 0x35, 0x83, 0x2c, 0xae,
+	0x49, 0x37, 0x03, 0x05, 0x9e, 0x90, 0x07, 0xad, 0x05, 0x28, 0x14, 0x0f, 0x90, 0x9b, 0x00, 0x94,
+	0xb9, 0x71, 0xf3, 0x85, 0xb4, 0xb4, 0xad, 0x94, 0xb4, 0xf3, 0x55, 0xfe, 0xdf, 0x9e, 0x4f, 0xff,
+	0x17, 0x00, 0x00, 0xff, 0xff, 0x6e, 0x2f, 0x7f, 0x12, 0x1f, 0x1a, 0x00, 0x00,
 }
diff --git a/lnrpc/rpc.pb.gw.go b/lnrpc/rpc.pb.gw.go
index e99ec490..316dbda9 100644
--- a/lnrpc/rpc.pb.gw.go
+++ b/lnrpc/rpc.pb.gw.go
@@ -324,6 +324,24 @@ func request_Lightning_SubscribeInvoices_0(ctx context.Context, marshaler runtim
 
 }
 
+func request_Lightning_ListPayments_0(ctx context.Context, marshaler runtime.Marshaler, client LightningClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq ListPaymentsRequest
+	var metadata runtime.ServerMetadata
+
+	msg, err := client.ListPayments(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+
+}
+
+func request_Lightning_DeleteAllPayments_0(ctx context.Context, marshaler runtime.Marshaler, client LightningClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq DeleteAllPaymentsRequest
+	var metadata runtime.ServerMetadata
+
+	msg, err := client.DeleteAllPayments(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+
+}
+
 // RegisterLightningHandlerFromEndpoint is same as RegisterLightningHandler but
 // automatically dials to "endpoint" and closes the connection when "ctx" gets done.
 func RegisterLightningHandlerFromEndpoint(ctx context.Context, mux *runtime.ServeMux, endpoint string, opts []grpc.DialOption) (err error) {
@@ -830,6 +848,62 @@ func RegisterLightningHandler(ctx context.Context, mux *runtime.ServeMux, conn *
 
 	})
 
+	mux.Handle("GET", pattern_Lightning_ListPayments_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(ctx)
+		defer cancel()
+		if cn, ok := w.(http.CloseNotifier); ok {
+			go func(done <-chan struct{}, closed <-chan bool) {
+				select {
+				case <-done:
+				case <-closed:
+					cancel()
+				}
+			}(ctx.Done(), cn.CloseNotify())
+		}
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		rctx, err := runtime.AnnotateContext(ctx, req)
+		if err != nil {
+			runtime.HTTPError(ctx, outboundMarshaler, w, req, err)
+		}
+		resp, md, err := request_Lightning_ListPayments_0(rctx, inboundMarshaler, client, req, pathParams)
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_Lightning_ListPayments_0(ctx, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
+	mux.Handle("DELETE", pattern_Lightning_DeleteAllPayments_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(ctx)
+		defer cancel()
+		if cn, ok := w.(http.CloseNotifier); ok {
+			go func(done <-chan struct{}, closed <-chan bool) {
+				select {
+				case <-done:
+				case <-closed:
+					cancel()
+				}
+			}(ctx.Done(), cn.CloseNotify())
+		}
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		rctx, err := runtime.AnnotateContext(ctx, req)
+		if err != nil {
+			runtime.HTTPError(ctx, outboundMarshaler, w, req, err)
+		}
+		resp, md, err := request_Lightning_DeleteAllPayments_0(rctx, inboundMarshaler, client, req, pathParams)
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_Lightning_DeleteAllPayments_0(ctx, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
 	return nil
 }
 
@@ -867,6 +941,10 @@ var (
 	pattern_Lightning_LookupInvoice_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 1, 0, 4, 1, 5, 2}, []string{"v1", "invoices", "r_hash_str"}, ""))
 
 	pattern_Lightning_SubscribeInvoices_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2}, []string{"v1", "invoices", "subscribe"}, ""))
+
+	pattern_Lightning_ListPayments_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1}, []string{"v1", "payments"}, ""))
+
+	pattern_Lightning_DeleteAllPayments_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1}, []string{"v1", "payments"}, ""))
 )
 
 var (
@@ -903,4 +981,8 @@ var (
 	forward_Lightning_LookupInvoice_0 = runtime.ForwardResponseMessage
 
 	forward_Lightning_SubscribeInvoices_0 = runtime.ForwardResponseStream
+
+	forward_Lightning_ListPayments_0 = runtime.ForwardResponseMessage
+
+	forward_Lightning_DeleteAllPayments_0 = runtime.ForwardResponseMessage
 )
diff --git a/lnrpc/rpc.proto b/lnrpc/rpc.proto
index 16baae53..297a877b 100644
--- a/lnrpc/rpc.proto
+++ b/lnrpc/rpc.proto
@@ -113,6 +113,18 @@ service Lightning {
     }
 
     rpc ShowRoutingTable(ShowRoutingTableRequest) returns (ShowRoutingTableResponse);
+
+    rpc ListPayments(ListPaymentsRequest) returns (ListPaymentsResponse){
+        option (google.api.http) = {
+            get: "/v1/payments"
+        };
+    };
+
+    rpc DeleteAllPayments(DeleteAllPaymentsRequest) returns (DeleteAllPaymentsResponse) {
+        option (google.api.http) = {
+            delete: "/v1/payments"
+        };
+    };
 }
 
 
@@ -396,3 +408,27 @@ message ListInvoiceResponse {
 }
 
 message InvoiceSubscription {}
+
+
+message Payment {
+    string r_hash = 1;
+
+    int64 value = 2;
+
+    int64 creation_date = 3;
+    repeated string path = 4;
+    int64 fee = 5;
+}
+
+message ListPaymentsRequest {
+}
+
+message ListPaymentsResponse {
+    repeated Payment payments = 1;
+}
+
+message DeleteAllPaymentsRequest {
+}
+
+message DeleteAllPaymentsResponse {
+}
\ No newline at end of file
diff --git a/lnrpc/rpc.swagger.json b/lnrpc/rpc.swagger.json
index c9caef8e..6c499757 100644
--- a/lnrpc/rpc.swagger.json
+++ b/lnrpc/rpc.swagger.json
@@ -293,6 +293,36 @@
         ]
       }
     },
+    "/v1/payments": {
+      "get": {
+        "operationId": "ListPayments",
+        "responses": {
+          "200": {
+            "description": "",
+            "schema": {
+              "$ref": "#/definitions/lnrpcListPaymentsResponse"
+            }
+          }
+        },
+        "tags": [
+          "Lightning"
+        ]
+      },
+      "delete": {
+        "operationId": "DeleteAllPayments",
+        "responses": {
+          "200": {
+            "description": "",
+            "schema": {
+              "$ref": "#/definitions/lnrpcDeleteAllPaymentsResponse"
+            }
+          }
+        },
+        "tags": [
+          "Lightning"
+        ]
+      }
+    },
     "/v1/peers": {
       "get": {
         "operationId": "ListPeers",
@@ -582,6 +612,12 @@
         }
       }
     },
+    "lnrpcDeleteAllPaymentsRequest": {
+      "type": "object"
+    },
+    "lnrpcDeleteAllPaymentsResponse": {
+      "type": "object"
+    },
     "lnrpcGetInfoRequest": {
       "type": "object"
     },
@@ -733,6 +769,20 @@
         }
       }
     },
+    "lnrpcListPaymentsRequest": {
+      "type": "object"
+    },
+    "lnrpcListPaymentsResponse": {
+      "type": "object",
+      "properties": {
+        "payments": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/lnrpcPayment"
+          }
+        }
+      }
+    },
     "lnrpcListPeersRequest": {
       "type": "object"
     },
@@ -792,6 +842,34 @@
         }
       }
     },
+    "lnrpcPayment": {
+      "type": "object",
+      "properties": {
+        "creation_date": {
+          "type": "string",
+          "format": "int64"
+        },
+        "fee": {
+          "type": "string",
+          "format": "int64"
+        },
+        "path": {
+          "type": "array",
+          "items": {
+            "type": "string",
+            "format": "string"
+          }
+        },
+        "r_hash": {
+          "type": "string",
+          "format": "string"
+        },
+        "value": {
+          "type": "string",
+          "format": "int64"
+        }
+      }
+    },
     "lnrpcPaymentHash": {
       "type": "object",
       "properties": {
diff --git a/rpcserver.go b/rpcserver.go
index 050db288..71e76724 100644
--- a/rpcserver.go
+++ b/rpcserver.go
@@ -597,6 +597,19 @@ func (r *rpcServer) ListChannels(ctx context.Context,
 	return resp, nil
 }
 
+func constructPayment(path []graph.Vertex, amount btcutil.Amount, rHash []byte) *channeldb.OutgoingPayment {
+	payment := &channeldb.OutgoingPayment{}
+	copy(payment.RHash[:], rHash)
+	payment.Invoice.Terms.Value = btcutil.Amount(amount)
+	payment.Invoice.CreationDate = time.Now()
+	pathBytes := make([][]byte, len(path))
+	for i:=0; i<len(path); i++ {
+		pathBytes[i] = path[i].ToByte()
+	}
+	payment.Path = pathBytes
+	return payment
+}
+
 // SendPayment dispatches a bi-directional streaming RPC for sending payments
 // through the Lightning Network. A single RPC invocation creates a persistent
 // bi-directional stream allowing clients to rapidly send payments through the
@@ -641,13 +654,6 @@ func (r *rpcServer) SendPayment(paymentStream lnrpc.Lightning_SendPaymentServer)
 			// Query the routing table for a potential path to the
 			// destination node. If a path is ultimately
 			// unavailable, then an error will be returned.
-			destNode := nextPayment.Dest
-			targetVertex := graph.NewVertex(destNode)
-			path, err := r.server.routingMgr.FindPath(targetVertex)
-			if err != nil {
-				return err
-			}
-			rpcsLog.Tracef("[sendpayment] selected route: %v", path)
 			// If we're in debug HTLC mode, then all outgoing
 			// HTLC's will pay to the same debug rHash. Otherwise,
 			// we pay to the rHash specified within the RPC
@@ -661,11 +667,12 @@ func (r *rpcServer) SendPayment(paymentStream lnrpc.Lightning_SendPaymentServer)
 			// Construct and HTLC packet which a payment route (if
 			// one is found) to the destination using a Sphinx
 			// onoin packet to encode the route.
-			htlcPkt, err := r.constructPaymentRoute([]byte(nextPayment.Dest),
+			htlcPkt, path, err := r.constructPaymentRoute([]byte(nextPayment.Dest),
 				nextPayment.Amt, rHash)
 			if err != nil {
 				return err
 			}
+			rpcsLog.Tracef("[sendpayment] selected route: %v", path)
 			// We launch a new goroutine to execute the current
 			// payment so we can continue to serve requests while
 			// this payment is being dispatiched.
@@ -680,7 +687,9 @@ func (r *rpcServer) SendPayment(paymentStream lnrpc.Lightning_SendPaymentServer)
 					errChan <- err
 					return
 				}
-
+				// Save payment to DB.
+				payment := constructPayment(path, btcutil.Amount(nextPayment.Amt), rHash[:])
+				r.server.chanDB.AddPayment(payment)
 				// TODO(roasbeef): proper responses
 				resp := &lnrpc.SendResponse{}
 				if err := paymentStream.Send(resp); err != nil {
@@ -719,7 +728,7 @@ func (r *rpcServer) SendPaymentSync(ctx context.Context,
 	// Construct and HTLC packet which a payment route (if
 	// one is found) to the destination using a Sphinx
 	// onoin packet to encode the route.
-	htlcPkt, err := r.constructPaymentRoute([]byte(nextPayment.DestString),
+	htlcPkt, path, err := r.constructPaymentRoute([]byte(nextPayment.DestString),
 		nextPayment.Amt, rHash)
 	if err != nil {
 		return nil, err
@@ -730,7 +739,8 @@ func (r *rpcServer) SendPaymentSync(ctx context.Context,
 	if err := r.server.htlcSwitch.SendHTLC(htlcPkt); err != nil {
 		return nil, err
 	}
-
+	payment := constructPayment(path, btcutil.Amount(nextPayment.Amt), rHash[:])
+				r.server.chanDB.AddPayment(payment)
 	return &lnrpc.SendResponse{}, nil
 }
 
@@ -739,7 +749,7 @@ func (r *rpcServer) SendPaymentSync(ctx context.Context,
 // payment instructions necessary to complete an HTLC. If a route is unable to
 // be located, then an error is returned indicating as much.
 func (r *rpcServer) constructPaymentRoute(destPubkey []byte, amt int64,
-	rHash [32]byte) (*htlcPacket, error) {
+	rHash [32]byte) (*htlcPacket, []graph.Vertex, error) {
 
 	const queryTimeout = time.Duration(time.Second * 10)
 
@@ -749,7 +759,7 @@ func (r *rpcServer) constructPaymentRoute(destPubkey []byte, amt int64,
 	targetVertex := graph.NewVertex(destPubkey)
 	path, err := r.server.routingMgr.FindPath(targetVertex)
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 	rpcsLog.Tracef("[sendpayment] selected route: %v", path)
 
@@ -758,7 +768,7 @@ func (r *rpcServer) constructPaymentRoute(destPubkey []byte, amt int64,
 	// the routing table's star graph, we're always the first hop.
 	sphinxPacket, err := generateSphinxPacket(path[1:], rHash[:])
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 
 	// Craft an HTLC packet to send to the routing sub-system. The
@@ -776,7 +786,7 @@ func (r *rpcServer) constructPaymentRoute(destPubkey []byte, amt int64,
 	return &htlcPacket{
 		dest: destInterface,
 		msg:  htlcAdd,
-	}, nil
+	}, path, nil
 }
 
 // generateSphinxPacket generates then encodes a sphinx packet which encodes
@@ -1121,3 +1131,40 @@ func (r *rpcServer) ShowRoutingTable(ctx context.Context,
 		Channels: channels,
 	}, nil
 }
+
+
+// ListPayments returns a list of all outgoing payments.
+func (r *rpcServer) ListPayments(context.Context,
+	*lnrpc.ListPaymentsRequest) (*lnrpc.ListPaymentsResponse, error) {
+	rpcsLog.Debugf("[ListPayments]")
+	payments, err := r.server.chanDB.FetchAllPayments()
+	if err != nil {
+		return nil, err
+	}
+	paymentsResp := &lnrpc.ListPaymentsResponse{
+		Payments: make([]*lnrpc.Payment, len(payments)),
+	}
+	for i:=0; i<len(payments); i++{
+		p := &lnrpc.Payment{}
+		p.CreationDate = payments[i].CreationDate.Unix()
+		p.Value = int64(payments[i].Terms.Value)
+		p.RHash = hex.EncodeToString(payments[i].RHash[:])
+		path := make([]string, len(payments[i].Path))
+		for j:=0; j<len(path); j++ {
+			path[j] = hex.EncodeToString(payments[i].Path[j])
+		}
+		p.Path = path
+		paymentsResp.Payments[i] = p
+	}
+
+	return paymentsResp, nil
+}
+
+// DeleteAllPayments deletes all outgoing payments from DB.
+func (r *rpcServer) DeleteAllPayments(context.Context,
+	*lnrpc.DeleteAllPaymentsRequest) (*lnrpc.DeleteAllPaymentsResponse, error) {
+	rpcsLog.Debugf("[DeleteAllPayments]")
+	err := r.server.chanDB.DeleteAllPayments()
+	resp := &lnrpc.DeleteAllPaymentsResponse{}
+	return resp, err
+}
\ No newline at end of file