Add channel age column

README.md

@@ -82,6 +82,7 @@ columns = [
 	"UNSETTLED",   # the amount unsettled in the channel
 	"CFEE",        # the commit fee
 	"LAST UPDATE", # last update of the channel
+	# "AGE",       # approximate channel age
 	"PRIVATE",     # true if channel is private
 	"ID",          # the id of the channel
 	# "SCID",      # short channel id (BxTxO formatted)

config/default.go

@@ -43,6 +43,7 @@ columns = [
 	"UNSETTLED",   # the amount unsettled in the channel
 	"CFEE",        # the commit fee
 	"LAST UPDATE", # last update of the channel
+	# "AGE",       # approximate channel age
 	"PRIVATE",     # true if channel is private
 	"ID",          # the id of the channel
 	# "SCID",      # short channel id (BxTxO formatted)

network/models/channel.go

@@ -45,6 +45,7 @@ type Channel struct {
 	TotalAmountReceived int64
 	UpdatesCount        uint64
 	CSVDelay            uint32
+	Age                 uint32
 	Private             bool
 	PendingHTLC         []*HTLC
 	LastUpdate          *time.Time

ui/models/models.go

@@ -62,6 +62,7 @@ func (m *Models) RefreshChannels(ctx context.Context) error {
 		if channel != nil &&
 			(channel.UpdatesCount < channels[i].UpdatesCount ||
 				channel.LastUpdate == nil || channel.LocalPolicy == nil || channel.RemotePolicy == nil) {
+			channels[i].Age = m.Info.BlockHeight - uint32(channels[i].ID>>40)
 			err := m.network.GetChannelInfo(ctx, channels[i])
 			if err != nil {
 				return err

ui/models/sort.go

@@ -40,6 +40,13 @@ func Float64Sort(a, b float64, o Order) bool {
 	return a > b
 }
 
+func UInt32Sort(a, b uint32, o Order) bool {
+	if o == Asc {
+		return a < b
+	}
+	return a > b
+}
+
 func UInt64Sort(a, b uint64, o Order) bool {
 	if o == Asc {
 		return a < b

ui/views/channels.go

@@ -638,6 +638,23 @@ func NewChannels(cfg *config.View, chans *models.Channels) *Channels {
 					return color.White(opts...)(printer.Sprintf("%7d", val))
 				},
 			}
+		case "AGE":
+			channels.columns[i] = channelsColumn{
+				width: 8,
+				name:  fmt.Sprintf("%10s", columns[i]),
+				sort: func(order models.Order) models.ChannelsSort {
+					return func(c1, c2 *netmodels.Channel) bool {
+						return models.UInt32Sort(c1.Age, c2.Age, order)
+					}
+				},
+				display: func(c *netmodels.Channel, opts ...color.Option) string {
+					if c.ID == 0 {
+						return fmt.Sprintf("%10s", "")
+					}
+					return color.White(opts...)(fmt.Sprintf("%10s", FormatAge(c.Age)))
+				},
+			}
+
 		default:
 			channels.columns[i] = channelsColumn{
 				width: 21,

ui/views/views.go

@@ -116,3 +116,19 @@ func ToScid(id uint64) string {
 
 	return fmt.Sprintf("%dx%dx%d", blocknum, txnum, outnum)
 }
+
+func FormatAge(age uint32) string {
+	if age < 6 {
+		return fmt.Sprintf("%02dm", age*10)
+	}
+	if age < 144 {
+		return fmt.Sprintf("%02dh", age/6)
+	}
+	if age < 4383 {
+		return fmt.Sprintf("%02dd%02dh", age/144, (age%144)/6)
+	}
+	if age < 52596 {
+		return fmt.Sprintf("%02dm%02dd%02dh", age/4383, (age%4383)/144, (age%144)/6)
+	}
+	return fmt.Sprintf("%02dy%02dm%02dd", age/52596, (age%52596)/4383, (age%4383)/144)
+}