rename src/bin to src/main

Signed-off-by: Jason Volk <jason@zemos.net>

src/main/server.rs

@@ -0,0 +1,186 @@
+use std::sync::Arc;
+
+use conduit::{
+	conduwuit_version,
+	config::Config,
+	info,
+	log::{LogLevelReloadHandles, ReloadHandle},
+	utils::{clap, maximize_fd_limit},
+	Error, Result,
+};
+use tokio::runtime;
+use tracing_subscriber::{prelude::*, reload, EnvFilter, Registry};
+
+/// Server runtime state; complete
+pub(crate) struct Server {
+	/// Server runtime state; public portion
+	pub(crate) server: Arc<conduit::Server>,
+
+	_tracing_flame_guard: TracingFlameGuard,
+
+	#[cfg(feature = "sentry_telemetry")]
+	_sentry_guard: Option<sentry::ClientInitGuard>,
+
+	// Module instances; TODO: move to mods::loaded mgmt vector
+	#[cfg(feature = "mods")]
+	pub(crate) mods: tokio::sync::RwLock<Vec<conduit::mods::Module>>,
+}
+
+impl Server {
+	pub(crate) fn build(args: clap::Args, runtime: Option<&runtime::Handle>) -> Result<Arc<Server>, Error> {
+		let config = Config::new(args.config)?;
+		#[cfg(feature = "sentry_telemetry")]
+		let sentry_guard = init_sentry(&config);
+		let (tracing_reload_handle, tracing_flame_guard) = init_tracing(&config);
+
+		config.check()?;
+		#[cfg(unix)]
+		maximize_fd_limit().expect("Unable to increase maximum soft and hard file descriptor limit");
+		info!(
+			server_name = %config.server_name,
+			database_path = ?config.database_path,
+			log_levels = %config.log,
+			"{}",
+			conduwuit_version(),
+		);
+
+		Ok(Arc::new(Server {
+			server: Arc::new(conduit::Server::new(config, runtime.cloned(), tracing_reload_handle)),
+
+			_tracing_flame_guard: tracing_flame_guard,
+
+			#[cfg(feature = "sentry_telemetry")]
+			_sentry_guard: sentry_guard,
+
+			#[cfg(feature = "mods")]
+			mods: tokio::sync::RwLock::new(Vec::new()),
+		}))
+	}
+}
+
+#[cfg(feature = "sentry_telemetry")]
+fn init_sentry(config: &Config) -> Option<sentry::ClientInitGuard> {
+	if !config.sentry {
+		return None;
+	}
+
+	let sentry_endpoint = config
+		.sentry_endpoint
+		.as_ref()
+		.expect("init_sentry should only be called if sentry is enabled and this is not None")
+		.as_str();
+
+	let server_name = if config.sentry_send_server_name {
+		Some(config.server_name.to_string().into())
+	} else {
+		None
+	};
+
+	Some(sentry::init((
+		sentry_endpoint,
+		sentry::ClientOptions {
+			release: sentry::release_name!(),
+			traces_sample_rate: config.sentry_traces_sample_rate,
+			server_name,
+			..Default::default()
+		},
+	)))
+}
+
+#[cfg(feature = "perf_measurements")]
+type TracingFlameGuard = Option<tracing_flame::FlushGuard<std::io::BufWriter<std::fs::File>>>;
+#[cfg(not(feature = "perf_measurements"))]
+type TracingFlameGuard = ();
+
+// clippy thinks the filter_layer clones are redundant if the next usage is
+// behind a disabled feature.
+#[allow(clippy::redundant_clone)]
+fn init_tracing(config: &Config) -> (LogLevelReloadHandles, TracingFlameGuard) {
+	let registry = Registry::default();
+	let fmt_layer = tracing_subscriber::fmt::Layer::new();
+	let filter_layer = match EnvFilter::try_new(&config.log) {
+		Ok(s) => s,
+		Err(e) => {
+			eprintln!("It looks like your config is invalid. The following error occured while parsing it: {e}");
+			EnvFilter::try_new("warn").unwrap()
+		},
+	};
+
+	let mut reload_handles = Vec::<Box<dyn ReloadHandle<EnvFilter> + Send + Sync>>::new();
+	let subscriber = registry;
+
+	#[cfg(feature = "tokio_console")]
+	let subscriber = {
+		let console_layer = console_subscriber::spawn();
+		subscriber.with(console_layer)
+	};
+
+	let (fmt_reload_filter, fmt_reload_handle) = reload::Layer::new(filter_layer.clone());
+	reload_handles.push(Box::new(fmt_reload_handle));
+	let subscriber = subscriber.with(fmt_layer.with_filter(fmt_reload_filter));
+
+	#[cfg(feature = "sentry_telemetry")]
+	let subscriber = {
+		let sentry_layer = sentry_tracing::layer();
+		let (sentry_reload_filter, sentry_reload_handle) = reload::Layer::new(filter_layer.clone());
+		reload_handles.push(Box::new(sentry_reload_handle));
+		subscriber.with(sentry_layer.with_filter(sentry_reload_filter))
+	};
+
+	#[cfg(feature = "perf_measurements")]
+	let (subscriber, flame_guard) = {
+		let (flame_layer, flame_guard) = if config.tracing_flame {
+			let flame_filter = match EnvFilter::try_new(&config.tracing_flame_filter) {
+				Ok(flame_filter) => flame_filter,
+				Err(e) => panic!("tracing_flame_filter config value is invalid: {e}"),
+			};
+
+			let (flame_layer, flame_guard) =
+				match tracing_flame::FlameLayer::with_file(&config.tracing_flame_output_path) {
+					Ok(ok) => ok,
+					Err(e) => {
+						panic!("failed to initialize tracing-flame: {e}");
+					},
+				};
+			let flame_layer = flame_layer
+				.with_empty_samples(false)
+				.with_filter(flame_filter);
+			(Some(flame_layer), Some(flame_guard))
+		} else {
+			(None, None)
+		};
+
+		let jaeger_layer = if config.allow_jaeger {
+			opentelemetry::global::set_text_map_propagator(opentelemetry_jaeger::Propagator::new());
+			let tracer = opentelemetry_jaeger::new_agent_pipeline()
+				.with_auto_split_batch(true)
+				.with_service_name("conduwuit")
+				.install_batch(opentelemetry_sdk::runtime::Tokio)
+				.unwrap();
+			let telemetry = tracing_opentelemetry::layer().with_tracer(tracer);
+
+			let (jaeger_reload_filter, jaeger_reload_handle) = reload::Layer::new(filter_layer);
+			reload_handles.push(Box::new(jaeger_reload_handle));
+			Some(telemetry.with_filter(jaeger_reload_filter))
+		} else {
+			None
+		};
+
+		let subscriber = subscriber.with(flame_layer).with(jaeger_layer);
+		(subscriber, flame_guard)
+	};
+
+	#[cfg(not(feature = "perf_measurements"))]
+	#[cfg_attr(not(feature = "perf_measurements"), allow(clippy::let_unit_value))]
+	let flame_guard = ();
+
+	tracing::subscriber::set_global_default(subscriber).unwrap();
+
+	#[cfg(all(feature = "tokio_console", feature = "release_max_log_level"))]
+	tracing::error!(
+		"'tokio_console' feature and 'release_max_log_level' feature are incompatible, because console-subscriber \
+		 needs access to trace-level events. 'release_max_log_level' must be disabled to use tokio-console."
+	);
+
+	(LogLevelReloadHandles::new(reload_handles), flame_guard)
+}