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use std::process::exit;
use std::time::Duration;
use actions::Action;
use anyhow::{bail, Context, Result};
use async_scoped::TokioScope;
use clap::Parser;
use human_panic::setup_panic;
use log::{error, info, warn};
#[cfg(unix)]
use tokio::signal::unix::{signal, SignalKind};
use tokio::time::sleep;
mod actions;
mod blockchain;
mod config;
mod message;
mod wallets;
use crate::actions::{get_actions, run_actions};
use crate::message::MessageParams;
use crate::{
blockchain::BlockchainState,
config::{get_config, Args},
wallets::{get_wallets, SafeWalletInfo},
};
fn set_logger() {
let mut builder = pretty_env_logger::formatted_builder();
match std::env::var("RUST_LOG") {
Ok(_) => builder.parse_default_env(),
Err(_) => builder.filter_module(env!("CARGO_PKG_NAME"), log::LevelFilter::Info),
};
builder.init();
}
fn set_signal_handlers() -> Result<()> {
tokio::spawn(async move {
if let Err(e) = tokio::signal::ctrl_c().await {
return e;
}
warn!("received ctrl-c signal. Exiting...");
exit(0)
});
#[cfg(unix)]
tokio::spawn(async move {
let mut stream = match signal(SignalKind::terminate()) {
Err(e) => return e,
Ok(s) => s,
};
stream.recv().await;
warn!("received process termination signal. Exiting...");
exit(0)
});
#[cfg(unix)]
tokio::spawn(async move {
let mut stream = match signal(SignalKind::hangup()) {
Err(e) => return e,
Ok(s) => s,
};
stream.recv().await;
warn!("received process hangup signal. Exiting...");
exit(0)
});
Ok(())
}
fn get_and_handle_new_txs(
wallet_info: &SafeWalletInfo,
actions: &[&(dyn Action<'_> + Sync)],
) -> Result<()> {
let mut locked_wallet_info = wallet_info.lock().unwrap();
let txs = locked_wallet_info.get_new_txs();
TokioScope::scope_and_block(|s| {
for tx in txs.iter() {
let params = MessageParams::new(tx, &locked_wallet_info);
s.spawn(run_actions(actions, Some(params)));
}
});
Ok(())
}
async fn update_blockchain_thread(blockchain_state: &mut BlockchainState) {
loop {
blockchain_state.update_height();
sleep(Duration::from_secs(60)).await;
}
}
async fn watch_wallet_thread(wallet_info: &SafeWalletInfo, actions: &[&(dyn Action<'_> + Sync)]) {
loop {
if let Err(e) = get_and_handle_new_txs(wallet_info, actions) {
warn!("{:?}", e);
}
}
}
async fn initial_wallet_sync(blockchain_state: &mut BlockchainState, wallets: &[SafeWalletInfo]) {
TokioScope::scope_and_block(|s| {
s.spawn(async { blockchain_state.update_height() });
for wallet_info in wallets {
s.spawn(async {
if let Err(e) = get_and_handle_new_txs(wallet_info, &[]) {
warn!("{:?}", e);
}
});
}
});
}
async fn watch_wallets(
blockchain_state: &mut BlockchainState,
wallets: &[SafeWalletInfo],
actions: &[&(dyn Action<'_> + Sync)],
) {
TokioScope::scope_and_block(|s| {
s.spawn(update_blockchain_thread(blockchain_state));
for wallet_info in wallets {
s.spawn(watch_wallet_thread(wallet_info, actions));
}
});
}
async fn do_main() -> Result<()> {
setup_panic!();
let args = Args::parse();
set_logger();
set_signal_handlers().context("failed to setup a signal termination handler")?;
let config = get_config(&args.config())?;
let actions = get_actions(config.message(), config.actions()).await;
if actions.is_empty() {
bail!("no actions properly configured");
}
let actions_ref = actions.iter().map(Box::as_ref).collect::<Vec<_>>();
if args.test() {
run_actions(&actions_ref, None).await;
return Ok(());
}
let mut blockchain_state = BlockchainState::new(config.electrum())?;
let wallets = get_wallets(config.wallets(), config.electrum());
if wallets.is_empty() {
bail!("no wallets properly configured");
}
if !args.notify_past_txs() {
info!("initial wallet sync");
initial_wallet_sync(&mut blockchain_state, &wallets).await;
}
info!("listening for new relevant events");
watch_wallets(&mut blockchain_state, &wallets, &actions_ref).await;
Ok(())
}
#[tokio::main]
async fn main() {
if let Err(e) = do_main().await {
error!("{:?}", e);
exit(1);
}
}
|
