minotari_node 5.4.0-pre.2

//  Copyright 2022, The Tari Project
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use anyhow::{Error, anyhow};
use async_trait::async_trait;
use clap::Parser;
use tari_common_types::epoch::VnEpoch;
use tari_core::chain_storage::ValidatorNodeRegistrationInfo;
use tari_utilities::hex::{Hex, to_hex};

use super::{CommandContext, HandleCommand};
use crate::table::Table;

/// Lists the peer connections currently held by this node
#[derive(Debug, Parser)]
pub struct Args {
    epoch: Option<VnEpoch>,
}

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

impl CommandContext {
    async fn print_validator_nodes_list(&mut self, vns: &[ValidatorNodeRegistrationInfo]) {
        let num_vns = vns.len();
        let mut table = Table::new();
        table.set_titles(vec!["Public Key", "VN Network", "Shard ID"]);
        for ValidatorNodeRegistrationInfo {
            public_key,
            sidechain_id: validator_network,
            shard_key,
            ..
        } in vns
        {
            table.add_row(row![
                public_key,
                validator_network
                    .as_ref()
                    .map(|v| v.to_hex())
                    .unwrap_or_else(|| "<default>".to_string()),
                to_hex(shard_key),
            ]);
        }

        table.print_stdout();

        println!();
        println!("{num_vns} active validator(s)");
    }
}

impl CommandContext {
    /// Function to process the list-connections command
    pub async fn list_validator_nodes(&mut self, args: Args) -> Result<(), Error> {
        let metadata = self.blockchain_db.get_chain_metadata().await?;
        let constants = self.consensus_rules.consensus_constants(metadata.best_block_height());
        let height = args
            .epoch
            .map(|epoch| constants.epoch_to_block_height(epoch))
            .unwrap_or_else(|| metadata.best_block_height());
        let current_epoch = constants.block_height_to_epoch(height);
        let next_epoch = VnEpoch(current_epoch.as_u64() + 1);
        let next_epoch_height = constants.epoch_to_block_height(next_epoch);

        let header = self
            .blockchain_db
            .fetch_header(height)
            .await?
            .ok_or_else(|| anyhow!("Block at height {height} not found"))?;
        let vns = self.blockchain_db.fetch_all_active_validator_nodes(height).await?;
        let next_vns = self
            .blockchain_db
            .fetch_all_active_validator_nodes(next_epoch_height)
            .await?;

        println!();
        println!("Registered validator nodes for epoch {}", current_epoch.as_u64());
        println!("Merkle root: {}", header.validator_node_mr);
        println!("----------------------------------");
        if vns.is_empty() {
            println!("No active validator nodes.");
        } else {
            println!();
            self.print_validator_nodes_list(&vns).await;
        }
        println!();
        println!("Registered validator nodes for next epoch {}", next_epoch.as_u64());
        println!("----------------------------------");
        if next_vns.is_empty() {
            println!("No active validator nodes.");
        } else {
            println!();
            self.print_validator_nodes_list(&next_vns).await;
        }

        Ok(())
    }
}