upub/main.rs

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Rust
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use std::path::PathBuf;
use clap::{Parser, Subcommand};
use sea_orm::{ConnectOptions, Database};
use signal_hook::consts::signal::*;
use signal_hook_tokio::Signals;
use futures::stream::StreamExt;
use upub::ext::LoggableError;
#[cfg(feature = "cli")]
use upub_cli as cli;
#[cfg(feature = "migrate")]
use upub_migrations as migrations;
#[cfg(feature = "serve")]
use upub_routes as routes;
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#[cfg(feature = "worker")]
use upub_worker as worker;
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#[derive(Parser)]
/// all names were taken
struct Args {
#[clap(subcommand)]
/// command to run
command: Mode,
/// path to config file, leave empty to not use any
#[arg(short, long)]
config: Option<PathBuf>,
#[arg(long = "db")]
/// database connection uri, overrides config value
database: Option<String>,
#[arg(long)]
/// instance base domain, for AP ids, overrides config value
domain: Option<String>,
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#[arg(long, default_value_t=false)]
/// run with debug level tracing
debug: bool,
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#[arg(long)]
/// force set number of worker threads for async runtime, defaults to number of cores
threads: Option<usize>,
}
#[derive(Clone, Subcommand)]
enum Mode {
/// print current or default configuration
Config,
#[cfg(feature = "migrate")]
/// apply database migrations
Migrate,
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#[cfg(feature = "cli")]
/// run maintenance CLI tasks
Cli {
#[clap(subcommand)]
/// task to run
command: cli::CliCommand,
},
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#[cfg(all(feature = "serve", feature = "worker"))]
/// start both api routes and background workers
Monolith {
#[arg(short, long, default_value="127.0.0.1:3000")]
/// addr to bind and serve onto
bind: String,
#[arg(short, long, default_value_t = 4)]
/// how many concurrent jobs to process with this worker
tasks: usize,
#[arg(short, long, default_value_t = 20)]
/// interval for polling new tasks
poll: u64,
},
#[cfg(feature = "serve")]
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/// start api routes server
Serve {
#[arg(short, long, default_value="127.0.0.1:3000")]
/// addr to bind and serve onto
bind: String,
},
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#[cfg(feature = "worker")]
/// start background job worker
Work {
/// only run tasks of this type, run all if not given
filter: Filter,
/// how many concurrent jobs to process with this worker
#[arg(short, long, default_value_t = 4)]
tasks: usize,
#[arg(short, long, default_value_t = 20)]
/// interval for polling new tasks
poll: u64,
},
}
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fn main() {
let args = Args::parse();
tracing_subscriber::fmt()
.compact()
.with_max_level(if args.debug { tracing::Level::DEBUG } else { tracing::Level::INFO })
.init();
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let config = upub::Config::load(args.config.as_ref());
if matches!(args.command, Mode::Config) {
println!("{}", toml::to_string_pretty(&config).expect("failed serializing config"));
return;
}
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let mut runtime = tokio::runtime::Builder::new_multi_thread();
if let Some(threads) = args.threads {
runtime.worker_threads(threads);
}
runtime
.enable_io()
.enable_time()
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.thread_name("upub-worker")
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.build()
.expect("failed creating tokio async runtime")
.block_on(async { init(args, config).await })
}
async fn init(args: Args, config: upub::Config) {
let database = args.database.unwrap_or(config.datasource.connection_string.clone());
let domain = args.domain.unwrap_or(config.instance.domain.clone());
// TODO can i do connectoptions.into() or .connect() and skip these ugly bindings?
let mut opts = ConnectOptions::new(&database);
opts
.sqlx_logging(true)
.sqlx_logging_level(tracing::log::LevelFilter::Debug)
.max_connections(config.datasource.max_connections)
.min_connections(config.datasource.min_connections)
.acquire_timeout(std::time::Duration::from_secs(config.datasource.acquire_timeout_seconds))
.connect_timeout(std::time::Duration::from_secs(config.datasource.connect_timeout_seconds))
.sqlx_slow_statements_logging_settings(
if config.datasource.slow_query_warn_enable { tracing::log::LevelFilter::Warn } else { tracing::log::LevelFilter::Debug },
std::time::Duration::from_secs(config.datasource.slow_query_warn_seconds)
);
let db = Database::connect(opts)
.await.expect("error connecting to db");
#[cfg(feature = "migrate")]
if matches!(args.command, Mode::Migrate) {
use migrations::MigratorTrait;
migrations::Migrator::up(&db, None)
.await
.expect("error applying migrations");
return;
}
let ctx = upub::Context::new(db, domain, config.clone())
.await.expect("failed creating server context");
#[cfg(feature = "cli")]
if let Mode::Cli { command } = args.command {
cli::run(ctx, command)
.await.expect("failed running cli task");
return;
}
// register signal handler only for long-lasting modes, such as server or worker
let (tx, rx) = tokio::sync::watch::channel(false);
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let signals = Signals::new([SIGTERM, SIGINT]).expect("failed registering signal handler");
let handle = signals.handle();
let signals_task = tokio::spawn(handle_signals(signals, tx));
let stop = CancellationToken(rx);
match args.command {
#[cfg(feature = "serve")]
Mode::Serve { bind } =>
routes::serve(ctx, bind, stop)
.await.expect("failed serving api routes"),
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#[cfg(feature = "worker")]
Mode::Work { filter, tasks, poll } =>
worker::spawn(ctx, tasks, poll, filter.into(), stop)
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.await.expect("failed running worker"),
#[cfg(all(feature = "serve", feature = "worker"))]
Mode::Monolith { bind, tasks, poll } => {
worker::spawn(ctx.clone(), tasks, poll, None, stop.clone());
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routes::serve(ctx, bind, stop)
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.await.expect("failed serving api routes");
},
Mode::Config => unreachable!(),
#[cfg(feature = "migrate")]
Mode::Migrate => unreachable!(),
#[cfg(feature = "cli")]
Mode::Cli { .. } => unreachable!(),
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}
handle.close();
signals_task.await.expect("failed joining signal handler task");
}
#[derive(Clone)]
struct CancellationToken(tokio::sync::watch::Receiver<bool>);
impl worker::StopToken for CancellationToken {
fn stop(&self) -> bool {
*self.0.borrow()
}
}
#[sea_orm::prelude::async_trait::async_trait] // ahahaha we avoid this???
impl routes::ShutdownToken for CancellationToken {
async fn event(mut self) {
self.0.changed().await.warn_failed("cancellation token channel closed, stopping...");
}
}
async fn handle_signals(
mut signals: signal_hook_tokio::Signals,
tx: tokio::sync::watch::Sender<bool>,
) {
while let Some(signal) = signals.next().await {
match signal {
SIGTERM | SIGINT => {
tracing::info!("received stop signal, closing tasks");
tx.send(true).info_failed("error sending stop signal to tasks")
},
_ => unreachable!(),
}
}
}
#[derive(Debug, Clone, clap::ValueEnum)]
enum Filter {
All,
Delivery,
Inbound,
Outbound,
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}
impl From<Filter> for Option<upub::model::job::JobType> {
fn from(value: Filter) -> Self {
match value {
Filter::All => None,
Filter::Delivery => Some(upub::model::job::JobType::Delivery),
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Filter::Inbound => Some(upub::model::job::JobType::Inbound),
Filter::Outbound => Some(upub::model::job::JobType::Outbound),
}
}
}