From 97d369de5710e55e6eb3f22018ab918174fe1143 Mon Sep 17 00:00:00 2001
From: Robbie Averill <robbie@chec.io>
Date: Thu, 28 Oct 2021 14:39:04 -0700
Subject: [PATCH] Add handler for readiness probe

---
 README.md | 1 +
 index.js  | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/README.md b/README.md
index c1f4039..fb93f48 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,7 @@ npm run build
 
 | Event | Action | Template |
 | -------------------------- | ----------------------------------- | ---------------------- |
+| `readiness.probe`          | API checking on readiness           | -                      |
 | `integrations.create`      | Initial setup                       | -                      |
 | `orders.create`            | Send customer receipt               | "Order receipt"        |
 | `orders.physical.shipment` | Send customer shipment notification | "Item shipped"         |
diff --git a/index.js b/index.js
index e2e47df..a2a5ddb 100644
--- a/index.js
+++ b/index.js
@@ -67,6 +67,14 @@ module.exports = async function handler(request, context) {
   // Verify webhook authenticity
   verifyWebhook(request.body, context.webhookSigningKey);
 
+  // If it's a readiness probe, tell it we're good.
+  if (request.body.event === 'readiness.probe') {
+    return {
+      statusCode: 204,
+      body: '',
+    };
+  }
+
   // Fetch merchant and integration info
   const merchant = await context.merchant();
   const merchantId = merchant.id;