split sentry init; add user-agent, trace hooks.

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

src/main/sentry.rs

@@ -0,0 +1,45 @@
+#![cfg(feature = "sentry_telemetry")]
+
+use std::{str::FromStr, sync::Arc};
+
+use conduit::{config::Config, trace};
+use sentry::{
+	types::{protocol::v7::Event, Dsn},
+	Breadcrumb, ClientOptions,
+};
+
+pub(crate) fn init(config: &Config) -> Option<sentry::ClientInitGuard> {
+	config.sentry.then(|| sentry::init(options(config)))
+}
+
+fn options(config: &Config) -> ClientOptions {
+	let dsn = config
+		.sentry_endpoint
+		.as_ref()
+		.expect("init_sentry should only be called if sentry is enabled and this is not None")
+		.as_str();
+
+	ClientOptions {
+		dsn: Some(Dsn::from_str(dsn).expect("sentry_endpoint must be a valid URL")),
+		server_name: config
+			.sentry_send_server_name
+			.then(|| config.server_name.to_string().into()),
+		traces_sample_rate: config.sentry_traces_sample_rate,
+		debug: cfg!(debug_assertions),
+		release: sentry::release_name!(),
+		user_agent: conduit::version::user_agent().into(),
+		before_send: Some(Arc::new(before_send)),
+		before_breadcrumb: Some(Arc::new(before_breadcrumb)),
+		..Default::default()
+	}
+}
+
+fn before_send(event: Event<'static>) -> Option<Event<'static>> {
+	trace!("Sending sentry event: {event:?}");
+	Some(event)
+}
+
+fn before_breadcrumb(crumb: Breadcrumb) -> Option<Breadcrumb> {
+	trace!("Adding sentry breadcrumb: {crumb:?}");
+	Some(crumb)
+}