linera-service 0.15.7

Executable for clients (aka CLI wallets), proxy (aka validator frontend) and servers of the Linera protocol.
Documentation 
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// Copyright (c) Zefchain Labs, Inc.
// SPDX-License-Identifier: Apache-2.0

use linera_base::{
    data_types::{ChainDescription, ChainOrigin},
    identifiers::ChainId,
};
pub use linera_client::wallet::*;

pub fn pretty_print(wallet: &Wallet, chain_ids: Vec<ChainId>) {
    let chain_ids: Vec<_> = chain_ids.into_iter().collect();
    let total_chains = chain_ids.len();

    let plural_s = if total_chains == 1 { "" } else { "s" };
    tracing::info!("Found {total_chains} chain{plural_s}");

    let mut chains = chain_ids
        .into_iter()
        .map(|chain_id| ChainDetails::new(chain_id, wallet))
        .collect::<Vec<_>>();
    // Print first the default, then the admin chain, then other root chains, and finally the
    // child chains.
    chains.sort_unstable_by_key(|chain| {
        let root_id = chain
            .origin
            .and_then(|origin| origin.root())
            .unwrap_or(u32::MAX);
        let chain_id = chain.user_chain.chain_id;
        (!chain.is_default, !chain.is_admin, root_id, chain_id)
    });
    for chain in chains {
        chain.print_paragraph();
    }
    println!("------------------------");
}

struct ChainDetails<'a> {
    is_default: bool,
    is_admin: bool,
    origin: Option<ChainOrigin>,
    user_chain: &'a UserChain,
}

impl<'a> ChainDetails<'a> {
    fn new(chain_id: ChainId, wallet: &'a Wallet) -> Self {
        let Some(user_chain) = wallet.chains.get(&chain_id) else {
            panic!("Chain {} not found.", chain_id);
        };
        ChainDetails {
            is_default: Some(chain_id) == wallet.default,
            is_admin: chain_id == wallet.genesis_admin_chain(),
            origin: wallet
                .genesis_config()
                .chains
                .iter()
                .find(|description| description.id() == chain_id)
                .map(ChainDescription::origin),
            user_chain,
        }
    }

    fn print_paragraph(&self) {
        println!("-----------------------");
        println!("{:<20}  {}", "Chain ID:", self.user_chain.chain_id);

        let mut tags = Vec::new();
        if self.is_default {
            tags.push("DEFAULT");
        }
        if self.is_admin {
            tags.push("ADMIN");
        }
        if !tags.is_empty() {
            println!("{:<20}  {}", "Tags:", tags.join(", "));
        }

        match self.origin {
            Some(ChainOrigin::Root(_)) | None => {
                println!("{:<20}  -", "Parent chain:");
            }
            Some(ChainOrigin::Child { parent, .. }) => {
                println!("{:<20}  {parent}", "Parent chain:");
            }
        }

        if let Some(owner) = &self.user_chain.owner {
            println!("{:<20}  {owner}", "Default owner:");
        } else {
            println!("{:<20}  No owner key", "Default owner:");
        }

        println!("{:<20}  {}", "Timestamp:", self.user_chain.timestamp);
        println!("{:<20}  {}", "Blocks:", self.user_chain.next_block_height);

        if let Some(hash) = self.user_chain.block_hash {
            println!("{:<20}  {hash}", "Latest block hash:");
        }

        if self.user_chain.pending_proposal.is_some() {
            println!("{:<20}  present", "Pending proposal:");
        }
    }
}