+ Event::PaymentForwarded {
+ prev_channel_id,
+ next_channel_id,
+ fee_earned_msat,
+ claim_from_onchain_tx,
+ outbound_amount_forwarded_msat,
+ } => {
+ let read_only_network_graph = network_graph.read_only();
+ let nodes = read_only_network_graph.nodes();
+ let channels = channel_manager.list_channels();
+
+ let node_str = |channel_id: &Option<ChannelId>| match channel_id {
+ None => String::new(),
+ Some(channel_id) => match channels.iter().find(|c| c.channel_id == *channel_id) {
+ None => String::new(),
+ Some(channel) => {
+ match nodes.get(&NodeId::from_pubkey(&channel.counterparty.node_id)) {
+ None => "private node".to_string(),
+ Some(node) => match &node.announcement_info {
+ None => "unnamed node".to_string(),
+ Some(announcement) => {
+ format!("node {}", announcement.alias)
+ }
+ },
+ }
+ }
+ },
+ };
+ let channel_str = |channel_id: &Option<ChannelId>| {
+ channel_id
+ .map(|channel_id| format!(" with channel {}", channel_id))
+ .unwrap_or_default()
+ };
+ let from_prev_str =
+ format!(" from {}{}", node_str(&prev_channel_id), channel_str(&prev_channel_id));
+ let to_next_str =
+ format!(" to {}{}", node_str(&next_channel_id), channel_str(&next_channel_id));
+
+ let from_onchain_str = if claim_from_onchain_tx {
+ "from onchain downstream claim"
+ } else {
+ "from HTLC fulfill message"
+ };
+ let amt_args = if let Some(v) = outbound_amount_forwarded_msat {
+ format!("{}", v)
+ } else {
+ "?".to_string()
+ };
+ if let Some(fee_earned) = fee_earned_msat {
+ println!(
+ "\nEVENT: Forwarded payment for {} msat{}{}, earning {} msat {}",
+ amt_args, from_prev_str, to_next_str, fee_earned, from_onchain_str
+ );
+ } else {
+ println!(
+ "\nEVENT: Forwarded payment for {} msat{}{}, claiming onchain {}",
+ amt_args, from_prev_str, to_next_str, from_onchain_str
+ );
+ }
+ print!("> ");
+ io::stdout().flush().unwrap();
+ }
+ Event::HTLCHandlingFailed { .. } => {}