1use anyhow::anyhow;
  2use axum::{routing::get, Extension, Router};
  3use collab::{db, env, executor::Executor, AppState, Config, MigrateConfig, Result};
  4use db::Database;
  5use std::{
  6    env::args,
  7    net::{SocketAddr, TcpListener},
  8    path::Path,
  9    sync::Arc,
 10};
 11use tokio::signal::unix::SignalKind;
 12use tracing_log::LogTracer;
 13use tracing_subscriber::{filter::EnvFilter, fmt::format::JsonFields, Layer};
 14use util::ResultExt;
 15
 16const VERSION: &'static str = env!("CARGO_PKG_VERSION");
 17
 18#[tokio::main]
 19async fn main() -> Result<()> {
 20    if let Err(error) = env::load_dotenv() {
 21        eprintln!(
 22            "error loading .env.toml (this is expected in production): {}",
 23            error
 24        );
 25    }
 26
 27    match args().skip(1).next().as_deref() {
 28        Some("version") => {
 29            println!("collab v{VERSION}");
 30        }
 31        Some("migrate") => {
 32            let config = envy::from_env::<MigrateConfig>().expect("error loading config");
 33            let mut db_options = db::ConnectOptions::new(config.database_url.clone());
 34            db_options.max_connections(5);
 35            let db = Database::new(db_options, Executor::Production).await?;
 36
 37            let migrations_path = config
 38                .migrations_path
 39                .as_deref()
 40                .unwrap_or_else(|| Path::new(concat!(env!("CARGO_MANIFEST_DIR"), "/migrations")));
 41
 42            let migrations = db.migrate(&migrations_path, false).await?;
 43            for (migration, duration) in migrations {
 44                println!(
 45                    "Ran {} {} {:?}",
 46                    migration.version, migration.description, duration
 47                );
 48            }
 49
 50            return Ok(());
 51        }
 52        Some("serve") => {
 53            let config = envy::from_env::<Config>().expect("error loading config");
 54            init_tracing(&config);
 55
 56            let state = AppState::new(config).await?;
 57
 58            let listener = TcpListener::bind(&format!("0.0.0.0:{}", state.config.http_port))
 59                .expect("failed to bind TCP listener");
 60
 61            let epoch = state
 62                .db
 63                .create_server(&state.config.zed_environment)
 64                .await?;
 65            let rpc_server = collab::rpc::Server::new(epoch, state.clone(), Executor::Production);
 66            rpc_server.start().await?;
 67
 68            let app = collab::api::routes(rpc_server.clone(), state.clone())
 69                .merge(collab::rpc::routes(rpc_server.clone()))
 70                .merge(
 71                    Router::new()
 72                        .route("/", get(handle_root))
 73                        .route("/healthz", get(handle_liveness_probe))
 74                        .layer(Extension(state.clone())),
 75                );
 76
 77            axum::Server::from_tcp(listener)?
 78                .serve(app.into_make_service_with_connect_info::<SocketAddr>())
 79                .with_graceful_shutdown(async move {
 80                    let mut sigterm = tokio::signal::unix::signal(SignalKind::terminate())
 81                        .expect("failed to listen for interrupt signal");
 82                    let mut sigint = tokio::signal::unix::signal(SignalKind::interrupt())
 83                        .expect("failed to listen for interrupt signal");
 84                    let sigterm = sigterm.recv();
 85                    let sigint = sigint.recv();
 86                    futures::pin_mut!(sigterm, sigint);
 87                    futures::future::select(sigterm, sigint).await;
 88                    tracing::info!("Received interrupt signal");
 89                    rpc_server.teardown();
 90                })
 91                .await?;
 92        }
 93        _ => {
 94            Err(anyhow!("usage: collab <version | migrate | serve>"))?;
 95        }
 96    }
 97    Ok(())
 98}
 99
100async fn handle_root() -> String {
101    format!("collab v{VERSION}")
102}
103
104async fn handle_liveness_probe(Extension(state): Extension<Arc<AppState>>) -> Result<String> {
105    state.db.get_all_users(0, 1).await?;
106    Ok("ok".to_string())
107}
108
109pub fn init_tracing(config: &Config) -> Option<()> {
110    use std::str::FromStr;
111    use tracing_subscriber::layer::SubscriberExt;
112    let rust_log = config.rust_log.clone()?;
113
114    LogTracer::init().log_err()?;
115
116    let subscriber = tracing_subscriber::Registry::default()
117        .with(if config.log_json.unwrap_or(false) {
118            Box::new(
119                tracing_subscriber::fmt::layer()
120                    .fmt_fields(JsonFields::default())
121                    .event_format(
122                        tracing_subscriber::fmt::format()
123                            .json()
124                            .flatten_event(true)
125                            .with_span_list(true),
126                    ),
127            ) as Box<dyn Layer<_> + Send + Sync>
128        } else {
129            Box::new(
130                tracing_subscriber::fmt::layer()
131                    .event_format(tracing_subscriber::fmt::format().pretty()),
132            )
133        })
134        .with(EnvFilter::from_str(rust_log.as_str()).log_err()?);
135
136    tracing::subscriber::set_global_default(subscriber).unwrap();
137
138    None
139}