fix(sb_core): add an API for chaos testing (#411)

Author: nyannyacha

crates/sb_core/js/main_worker.js

@@ -11,6 +11,7 @@ Object.defineProperty(globalThis, 'EdgeRuntime', {
 			getRuntimeMetrics: () => /* async */ ops.op_runtime_metrics(),
 			applySupabaseTag: (src, dest) => applySupabaseTag(src, dest),
 			systemMemoryInfo: () => ops.op_system_memory_info(),
+			raiseSegfault: () => ops.op_raise_segfault(),
 		};
 	},
 	configurable: true,

crates/sb_core/lib.rs

@@ -343,6 +343,14 @@ fn op_set_raw(
     Ok(())
 }
 
+#[op2(fast)]
+fn op_raise_segfault(_state: &mut OpState) {
+    unsafe {
+        let ptr: *const i32 = std::ptr::null();
+        println!("{}", *ptr);
+    }
+}
+
 #[op2]
 #[serde]
 pub fn op_bootstrap_unstable_args(_state: &mut OpState) -> Vec<String> {
@@ -361,7 +369,8 @@ deno_core::extension!(
         op_schedule_mem_check,
         op_runtime_memory_usage,
         op_set_raw,
-        op_bootstrap_unstable_args
+        op_bootstrap_unstable_args,
+        op_raise_segfault,
     ],
     esm_entry_point = "ext:sb_core_main_js/js/bootstrap.js",
     esm = [

examples/main/index.ts

@@ -25,6 +25,17 @@ Deno.serve(async (req: Request) => {
 		);
 	}
 
+	// if (pathname === '/_internal/segfault') {
+	// 	EdgeRuntime.raiseSegfault();
+	// 	return new Response(
+	// 		JSON.stringify({ 'message': 'ok' }),
+	// 		{
+	// 			status: STATUS_CODE.OK,
+	// 			headers,
+	// 		},
+	// 	);
+	// }
+
 	if (pathname === '/_internal/metric') {
 		const metric = await EdgeRuntime.getRuntimeMetrics();
 		return Response.json(metric);