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use ansi_term::Colour;
use sc_client_api::{BlockchainEvents, UsageProvider};
use futures::prelude::*;
use log::{info, warn, trace};
use sp_runtime::traits::Header;
use sc_service::AbstractService;
use std::time::Duration;
mod display;
#[derive(PartialEq)]
pub enum OutputFormat {
Coloured,
Plain,
}
pub fn build(service: &impl AbstractService, format: OutputFormat) -> impl futures::Future<Output = ()> {
let client = service.client();
let pool = service.transaction_pool();
let mut display = display::InformantDisplay::new(format);
let display_notifications = service
.network_status(Duration::from_millis(5000))
.for_each(move |(net_status, _)| {
let info = client.usage_info();
if let Some(ref usage) = info.usage {
trace!(target: "usage", "Usage statistics: {}", usage);
} else {
trace!(
target: "usage",
"Usage statistics not displayed as backend does not provide it",
)
}
#[cfg(not(target_os = "unknown"))]
trace!(
target: "usage",
"Subsystems memory [txpool: {} kB]",
parity_util_mem::malloc_size(&*pool) / 1024,
);
display.display(&info, net_status);
future::ready(())
});
let client = service.client();
let mut last_best = {
let info = client.usage_info();
Some((info.chain.best_number, info.chain.best_hash))
};
let display_block_import = client.import_notification_stream().for_each(move |n| {
if let Some((ref last_num, ref last_hash)) = last_best {
if n.header.parent_hash() != last_hash && n.is_new_best {
let maybe_ancestor = sp_blockchain::lowest_common_ancestor(
&*client,
last_hash.clone(),
n.hash,
);
match maybe_ancestor {
Ok(ref ancestor) if ancestor.hash != *last_hash => info!(
"♻️ Reorg on #{},{} to #{},{}, common ancestor #{},{}",
Colour::Red.bold().paint(format!("{}", last_num)), last_hash,
Colour::Green.bold().paint(format!("{}", n.header.number())), n.hash,
Colour::White.bold().paint(format!("{}", ancestor.number)), ancestor.hash,
),
Ok(_) => {},
Err(e) => warn!("Error computing tree route: {}", e),
}
}
}
if n.is_new_best {
last_best = Some((n.header.number().clone(), n.hash.clone()));
}
info!(target: "substrate", "✨ Imported #{} ({})", Colour::White.bold().paint(format!("{}", n.header.number())), n.hash);
future::ready(())
});
future::join(
display_notifications,
display_block_import
).map(|_| ())
}