paych: Create lotus paych status command

cli/paych.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"io"
 	"sort"
+	"strings"
 
 	"github.com/filecoin-project/lotus/paychmgr"
 
@@ -79,6 +80,92 @@ var paychGetCmd = &cli.Command{
 	},
 }
 
+var paychStatusCmd = &cli.Command{
+	Name:      "status",
+	Usage:     "Show the status of an outbound payment channel between fromAddress and toAddress",
+	ArgsUsage: "[fromAddress toAddress]",
+	Action: func(cctx *cli.Context) error {
+		if cctx.Args().Len() != 2 {
+			return ShowHelp(cctx, fmt.Errorf("must pass two arguments: <from> <to>"))
+		}
+
+		from, err := address.NewFromString(cctx.Args().Get(0))
+		if err != nil {
+			return ShowHelp(cctx, fmt.Errorf("failed to parse from address: %s", err))
+		}
+
+		to, err := address.NewFromString(cctx.Args().Get(1))
+		if err != nil {
+			return ShowHelp(cctx, fmt.Errorf("failed to parse to address: %s", err))
+		}
+
+		api, closer, err := GetFullNodeAPI(cctx)
+		if err != nil {
+			return err
+		}
+		defer closer()
+
+		avail, err := api.PaychAvailableFunds(from, to)
+		if err != nil {
+			return err
+		}
+
+		if avail.Channel == nil {
+			if avail.PendingWaitSentinel != nil {
+				fmt.Fprint(cctx.App.Writer, "Creating channel\n")
+				fmt.Fprintf(cctx.App.Writer, "  From:          %s\n", from)
+				fmt.Fprintf(cctx.App.Writer, "  To:            %s\n", to)
+				fmt.Fprintf(cctx.App.Writer, "  Pending Amt:   %d\n", avail.PendingAmt)
+				fmt.Fprintf(cctx.App.Writer, "  Wait Sentinel: %s\n", avail.PendingWaitSentinel)
+				return nil
+			}
+			fmt.Fprint(cctx.App.Writer, "Channel does not exist\n")
+			fmt.Fprintf(cctx.App.Writer, "  From: %s\n", from)
+			fmt.Fprintf(cctx.App.Writer, "  To:   %s\n", to)
+			return nil
+		}
+
+		if avail.PendingWaitSentinel != nil {
+			fmt.Fprint(cctx.App.Writer, "Adding Funds to channel\n")
+		} else {
+			fmt.Fprint(cctx.App.Writer, "Channel exists\n")
+		}
+
+		nameValues := [][]string{
+			{"Channel", avail.Channel.String()},
+			{"From", from.String()},
+			{"To", to.String()},
+			{"Confirmed Amt", fmt.Sprintf("%d", avail.ConfirmedAmt)},
+			{"Pending Amt", fmt.Sprintf("%d", avail.PendingAmt)},
+			{"Queued Amt", fmt.Sprintf("%d", avail.QueuedAmt)},
+			{"Voucher Redeemed Amt", fmt.Sprintf("%d", avail.VoucherReedeemedAmt)},
+		}
+		if avail.PendingWaitSentinel != nil {
+			nameValues = append(nameValues, []string{
+				"Add Funds Wait Sentinel",
+				avail.PendingWaitSentinel.String(),
+			})
+		}
+		fmt.Fprint(cctx.App.Writer, formatNameValues(nameValues))
+		return nil
+	},
+}
+
+func formatNameValues(nameValues [][]string) string {
+	maxLen := 0
+	for _, nv := range nameValues {
+		if len(nv[0]) > maxLen {
+			maxLen = len(nv[0])
+		}
+	}
+	out := make([]string, len(nameValues))
+	for i, nv := range nameValues {
+		namePad := strings.Repeat(" ", maxLen-len(nv[0]))
+		out[i] = "  " + nv[0] + ": " + namePad + nv[1]
+	}
+	return strings.Join(out, "\n") + "\n"
+}
+
 var paychListCmd = &cli.Command{
 	Name:  "list",
 	Usage: "List all locally registered payment channels",

cli/paych_test.go

@@ -12,6 +12,8 @@ import (
 	"testing"
 	"time"
 
+	"github.com/filecoin-project/lotus/build"
+
 	"github.com/filecoin-project/specs-actors/actors/abi/big"
 	saminer "github.com/filecoin-project/specs-actors/actors/builtin/miner"
 	"github.com/filecoin-project/specs-actors/actors/builtin/power"
@@ -53,7 +55,7 @@ func TestPaymentChannels(t *testing.T) {
 	ctx := context.Background()
 	nodes, addrs := startTwoNodesOneMiner(ctx, t, blocktime)
 	paymentCreator := nodes[0]
-	paymentReceiver := nodes[0]
+	paymentReceiver := nodes[1]
 	creatorAddr := addrs[0]
 	receiverAddr := addrs[1]
 
@@ -99,6 +101,83 @@ type voucherSpec struct {
 	lane       int
 }
 
+// TestPaymentChannelStatus tests the payment channel status CLI command
+func TestPaymentChannelStatus(t *testing.T) {
+	_ = os.Setenv("BELLMAN_NO_GPU", "1")
+
+	blocktime := 5 * time.Millisecond
+	ctx := context.Background()
+	nodes, addrs := startTwoNodesOneMiner(ctx, t, blocktime)
+	paymentCreator := nodes[0]
+	creatorAddr := addrs[0]
+	receiverAddr := addrs[1]
+
+	// Create mock CLI
+	mockCLI := newMockCLI(t)
+	creatorCLI := mockCLI.client(paymentCreator.ListenAddr)
+
+	cmd := []string{creatorAddr.String(), receiverAddr.String()}
+	out := creatorCLI.runCmd(paychStatusCmd, cmd)
+	fmt.Println(out)
+	noChannelState := "Channel does not exist"
+	require.Regexp(t, regexp.MustCompile(noChannelState), out)
+
+	channelAmt := uint64(100)
+	create := make(chan string)
+	go func() {
+		// creator: paych get <creator> <receiver> <amount>
+		cmd = []string{creatorAddr.String(), receiverAddr.String(), fmt.Sprintf("%d", channelAmt)}
+		create <- creatorCLI.runCmd(paychGetCmd, cmd)
+	}()
+
+	// Wait for the output to stop being "Channel does not exist"
+	for regexp.MustCompile(noChannelState).MatchString(out) {
+		cmd = []string{creatorAddr.String(), receiverAddr.String()}
+		out = creatorCLI.runCmd(paychStatusCmd, cmd)
+	}
+	fmt.Println(out)
+
+	// The next state should be creating channel or channel created, depending
+	// on timing
+	stateCreating := regexp.MustCompile("Creating channel").MatchString(out)
+	stateCreated := regexp.MustCompile("Channel exists").MatchString(out)
+	require.True(t, stateCreating || stateCreated)
+
+	channelAmtAtto := types.BigMul(types.NewInt(channelAmt), types.NewInt(build.FilecoinPrecision))
+	channelAmtStr := fmt.Sprintf("%d", channelAmtAtto)
+	if stateCreating {
+		// If we're in the creating state (most likely) the amount should be pending
+		require.Regexp(t, regexp.MustCompile("Pending.*"+channelAmtStr), out)
+	}
+
+	// Wait for create channel to complete
+	chstr := <-create
+
+	cmd = []string{creatorAddr.String(), receiverAddr.String()}
+	out = creatorCLI.runCmd(paychStatusCmd, cmd)
+	fmt.Println(out)
+	// Output should have the channel address
+	require.Regexp(t, regexp.MustCompile("Channel.*"+chstr), out)
+	// Output should have confirmed amount
+	require.Regexp(t, regexp.MustCompile("Confirmed.*"+channelAmtStr), out)
+
+	chAddr, err := address.NewFromString(chstr)
+	require.NoError(t, err)
+
+	// creator: paych voucher create <channel> <amount>
+	voucherAmt := uint64(10)
+	cmd = []string{chAddr.String(), fmt.Sprintf("%d", voucherAmt)}
+	creatorCLI.runCmd(paychVoucherCreateCmd, cmd)
+
+	cmd = []string{creatorAddr.String(), receiverAddr.String()}
+	out = creatorCLI.runCmd(paychStatusCmd, cmd)
+	fmt.Println(out)
+	voucherAmtAtto := types.BigMul(types.NewInt(voucherAmt), types.NewInt(build.FilecoinPrecision))
+	voucherAmtStr := fmt.Sprintf("%d", voucherAmtAtto)
+	// Output should include voucher amount
+	require.Regexp(t, regexp.MustCompile("Voucher.*"+voucherAmtStr), out)
+}
+
 // TestPaymentChannelVouchers does a basic test to exercise some payment
 // channel voucher commands
 func TestPaymentChannelVouchers(t *testing.T) {