routing: change variable name numShardsInFlight -> numAttemptsInFlight

routing/payment_lifecycle.go

@@ -34,9 +34,9 @@ type paymentLifecycle struct {
 // paymentState holds a number of key insights learned from a given MPPayment
 // that we use to determine what to do on each payment loop iteration.
 type paymentState struct {
-	// numShardsInFlight specifies the number of HTLCs the payment is
+	// numAttemptsInFlight specifies the number of HTLCs the payment is
 	// waiting results for.
-	numShardsInFlight int
+	numAttemptsInFlight int
 
 	// remainingAmt specifies how much more money to be sent.
 	remainingAmt lnwire.MilliSatoshi
@@ -57,7 +57,7 @@ type paymentState struct {
 func (ps paymentState) terminated() bool {
 	// If the payment is in final stage and we have no in flight shards to
 	// wait result for, we consider the whole action terminated.
-	return ps.terminate && ps.numShardsInFlight == 0
+	return ps.terminate && ps.numAttemptsInFlight == 0
 }
 
 // needWaitForShards returns a bool to specify whether we need to wait for the
@@ -66,7 +66,7 @@ func (ps paymentState) needWaitForShards() bool {
 	// If we have in flight shards and the payment is in final stage, we
 	// need to wait for the outcomes from the shards. Or if we have no more
 	// money to be sent, we need to wait for the already launched shards.
-	if ps.numShardsInFlight == 0 {
+	if ps.numAttemptsInFlight == 0 {
 		return false
 	}
 	return ps.terminate || ps.remainingAmt == 0
@@ -115,10 +115,10 @@ func (p *paymentLifecycle) fetchPaymentState() (*channeldb.MPPayment,
 
 	// Update the payment state.
 	state := &paymentState{
-		numShardsInFlight: len(payment.InFlightHTLCs()),
-		remainingAmt:      totalAmt - sentAmt,
-		remainingFees:     feeBudget,
-		terminate:         terminate,
+		numAttemptsInFlight: len(payment.InFlightHTLCs()),
+		remainingAmt:        totalAmt - sentAmt,
+		remainingFees:       feeBudget,
+		terminate:           terminate,
 	}
 
 	return payment, state, nil
@@ -179,7 +179,7 @@ lifecycle:
 
 		log.Debugf("Payment %v in state terminate=%v, "+
 			"active_shards=%v, rem_value=%v, fee_limit=%v",
-			p.identifier, ps.terminate, ps.numShardsInFlight,
+			p.identifier, ps.terminate, ps.numAttemptsInFlight,
 			ps.remainingAmt, ps.remainingFees,
 		)
 
@@ -258,7 +258,7 @@ lifecycle:
 		// Create a new payment attempt from the given payment session.
 		rt, err := p.paySession.RequestRoute(
 			ps.remainingAmt, ps.remainingFees,
-			uint32(ps.numShardsInFlight),
+			uint32(ps.numAttemptsInFlight),
 			uint32(p.currentHeight),
 		)
 		if err != nil {
@@ -273,7 +273,7 @@ lifecycle:
 			// There is no route to try, and we have no active
 			// shards. This means that there is no way for us to
 			// send the payment, so mark it failed with no route.
-			if ps.numShardsInFlight == 0 {
+			if ps.numAttemptsInFlight == 0 {
 				failureCode := routeErr.FailureReason()
 				log.Debugf("Marking payment %v permanently "+
 					"failed with no route: %v",

routing/payment_lifecycle_test.go

@@ -803,9 +803,9 @@ func TestPaymentState(t *testing.T) {
 		// Use the following three params, each is equivalent to a bool
 		// statement, to construct 8 test cases so that we can
 		// exhaustively catch all possible states.
-		numShardsInFlight int
-		remainingAmt      lnwire.MilliSatoshi
-		terminate         bool
+		numAttemptsInFlight int
+		remainingAmt        lnwire.MilliSatoshi
+		terminate           bool
 
 		expectedTerminated        bool
 		expectedNeedWaitForShards bool
@@ -816,7 +816,7 @@ func TestPaymentState(t *testing.T) {
 			// remaining amount is zero, we need to wait for shards
 			// to be finished and launch no more shards.
 			name:                      "state 100",
-			numShardsInFlight:         1,
+			numAttemptsInFlight:       1,
 			remainingAmt:              lnwire.MilliSatoshi(0),
 			terminate:                 false,
 			expectedTerminated:        false,
@@ -828,7 +828,7 @@ func TestPaymentState(t *testing.T) {
 			// wait for shards to be finished and launch no more
 			// shards.
 			name:                      "state 101",
-			numShardsInFlight:         1,
+			numAttemptsInFlight:       1,
 			remainingAmt:              lnwire.MilliSatoshi(0),
 			terminate:                 true,
 			expectedTerminated:        false,
@@ -841,7 +841,7 @@ func TestPaymentState(t *testing.T) {
 			// remaining amount is not zero, we don't need to wait
 			// for shards outcomes and should launch more shards.
 			name:                      "state 110",
-			numShardsInFlight:         1,
+			numAttemptsInFlight:       1,
 			remainingAmt:              lnwire.MilliSatoshi(1),
 			terminate:                 false,
 			expectedTerminated:        false,
@@ -853,7 +853,7 @@ func TestPaymentState(t *testing.T) {
 			// remaining amount is not zero, we need to wait for
 			// shards outcomes because state is terminated.
 			name:                      "state 111",
-			numShardsInFlight:         1,
+			numAttemptsInFlight:       1,
 			remainingAmt:              lnwire.MilliSatoshi(1),
 			terminate:                 true,
 			expectedTerminated:        false,
@@ -865,7 +865,7 @@ func TestPaymentState(t *testing.T) {
 			// need to wait for more shard outcomes because there
 			// are no active shards.
 			name:                      "state 000",
-			numShardsInFlight:         0,
+			numAttemptsInFlight:       0,
 			remainingAmt:              lnwire.MilliSatoshi(0),
 			terminate:                 false,
 			expectedTerminated:        false,
@@ -876,7 +876,7 @@ func TestPaymentState(t *testing.T) {
 			// true, the state is terminated, and we don't need to
 			// wait for shards to be finished.
 			name:                      "state 001",
-			numShardsInFlight:         0,
+			numAttemptsInFlight:       0,
 			remainingAmt:              lnwire.MilliSatoshi(0),
 			terminate:                 true,
 			expectedTerminated:        true,
@@ -888,7 +888,7 @@ func TestPaymentState(t *testing.T) {
 			// remaining amount is not zero, we don't need to wait
 			// for shards outcomes and should launch more shards.
 			name:                      "state 010",
-			numShardsInFlight:         0,
+			numAttemptsInFlight:       0,
 			remainingAmt:              lnwire.MilliSatoshi(1),
 			terminate:                 false,
 			expectedTerminated:        false,
@@ -899,7 +899,7 @@ func TestPaymentState(t *testing.T) {
 			// true, the state is terminated, and we don't need to
 			// wait for shards outcomes.
 			name:                      "state 011",
-			numShardsInFlight:         0,
+			numAttemptsInFlight:       0,
 			remainingAmt:              lnwire.MilliSatoshi(1),
 			terminate:                 true,
 			expectedTerminated:        true,
@@ -913,9 +913,9 @@ func TestPaymentState(t *testing.T) {
 			t.Parallel()
 
 			ps := &paymentState{
-				numShardsInFlight: tc.numShardsInFlight,
-				remainingAmt:      tc.remainingAmt,
-				terminate:         tc.terminate,
+				numAttemptsInFlight: tc.numAttemptsInFlight,
+				remainingAmt:        tc.remainingAmt,
+				terminate:           tc.terminate,
 			}
 
 			require.Equal(
@@ -994,10 +994,10 @@ func TestUpdatePaymentState(t *testing.T) {
 			totalAmt: 1000,
 			feeLimit: 1,
 			expectedState: &paymentState{
-				numShardsInFlight: 1,
-				remainingAmt:      1000 - 90,
-				remainingFees:     0,
-				terminate:         false,
+				numAttemptsInFlight: 1,
+				remainingAmt:        1000 - 90,
+				remainingFees:       0,
+				terminate:           false,
 			},
 		},
 		{
@@ -1015,10 +1015,10 @@ func TestUpdatePaymentState(t *testing.T) {
 			totalAmt: 1000,
 			feeLimit: 100,
 			expectedState: &paymentState{
-				numShardsInFlight: 0,
-				remainingAmt:      1000 - 90,
-				remainingFees:     100 - 10,
-				terminate:         true,
+				numAttemptsInFlight: 0,
+				remainingAmt:        1000 - 90,
+				remainingFees:       100 - 10,
+				terminate:           true,
 			},
 		},
 		{
@@ -1034,10 +1034,10 @@ func TestUpdatePaymentState(t *testing.T) {
 			totalAmt: 1000,
 			feeLimit: 100,
 			expectedState: &paymentState{
-				numShardsInFlight: 0,
-				remainingAmt:      1000,
-				remainingFees:     100,
-				terminate:         true,
+				numAttemptsInFlight: 0,
+				remainingAmt:        1000,
+				remainingFees:       100,
+				terminate:           true,
 			},
 		},
 	}