minotari_node 5.4.0-pre.2

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use anyhow::Error;
use async_trait::async_trait;
use clap::Parser;
use minotari_app_utilities::utilities::UniNodeId;
use tari_comms::peer_manager::NodeId;
use tari_p2p::services::liveness::LivenessEvent;
use tokio::{sync::broadcast::error::RecvError, task};

use super::{CommandContext, HandleCommand};

/// Send a ping to a known peer and wait for a pong reply
#[derive(Debug, Parser)]
pub struct Args {
    /// hex public key or emoji id
    node_id: UniNodeId,
}

#[async_trait]
impl HandleCommand<Args> for CommandContext {
    async fn handle_command(&mut self, args: Args) -> Result<(), Error> {
        self.ping_peer(args.node_id.into()).await
    }
}

impl CommandContext {
    /// Function to process the ping-peer command
    pub async fn ping_peer(&mut self, dest_node_id: NodeId) -> Result<(), Error> {
        let mut liveness_events = self.liveness.get_event_stream();
        let mut liveness = self.liveness.clone();
        task::spawn(async move {
            match liveness.send_ping(dest_node_id.clone()).await {
                Ok(nonce) => {
                    println!("🏓 Pinging peer {dest_node_id} with nonce {nonce} ...");
                    loop {
                        match liveness_events.recv().await {
                            Ok(event) => {
                                if let LivenessEvent::ReceivedPong(pong) = &*event &&
                                    pong.node_id == dest_node_id &&
                                    pong.nonce == nonce
                                {
                                    println!(
                                        "🏓️ Pong: peer {} responded with nonce {}, round-trip-time is {:.2?}!",
                                        pong.node_id,
                                        pong.nonce,
                                        pong.latency.unwrap_or_default()
                                    );
                                    break;
                                }
                            },
                            Err(RecvError::Closed) => {
                                break;
                            },
                            Err(RecvError::Lagged(_)) => {},
                        }
                    }
                },
                Err(e) => {
                    println!("🏓 Ping failed to send to {dest_node_id}: {e}");
                },
            }
        });
        Ok(())
    }
}