From 21a407c0b6e4e93e785a9423bb06657fc6e7f462 Mon Sep 17 00:00:00 2001
From: Nour Alharithi <nour.alharithi@gmail.com>
Date: Mon, 22 Jan 2024 15:24:20 -0800
Subject: [PATCH] kill-switch

---
 src/dlob-subscriber/DLOBSubscriberIO.ts | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/dlob-subscriber/DLOBSubscriberIO.ts b/src/dlob-subscriber/DLOBSubscriberIO.ts
index 41491e7..88e7bb3 100644
--- a/src/dlob-subscriber/DLOBSubscriberIO.ts
+++ b/src/dlob-subscriber/DLOBSubscriberIO.ts
@@ -15,6 +15,8 @@ import {
 	l2WithBNToStrings,
 } from '../utils/utils';
 
+const SLOT_DIFF_KILLSWITCH_THRESHOLD = 50;
+
 type wsMarketL2Args = {
 	marketIndex: number;
 	marketType: MarketType;
@@ -139,6 +141,20 @@ export class DLOBSubscriberIO extends DLOBSubscriber {
 			l2Args.marketIndex
 		);
 
+		if (
+			Math.abs(slot - l2Formatted['marketSlot']) >
+				SLOT_DIFF_KILLSWITCH_THRESHOLD ||
+			Math.abs(slot - l2Formatted['oracleData']['slot']) >
+				SLOT_DIFF_KILLSWITCH_THRESHOLD
+		) {
+			console.log(`Killing process due to slot diffs: 
+				dlobProvider slot: ${slot}
+				oracle slot: ${l2Formatted['oracleData']['slot']}
+				market slot: ${l2Formatted['marketSlot']}
+			`);
+			process.exit(1);
+		}
+
 		const l2Formatted_depth100 = Object.assign({}, l2Formatted, {
 			bids: l2Formatted.bids.slice(0, 100),
 			asks: l2Formatted.asks.slice(0, 100),