From b81aa36d0c9ef19210550765f78d4458f89329dd Mon Sep 17 00:00:00 2001
From: Christophe Diederichs <45171645+chm-diederichs@users.noreply.github.com>
Date: Mon, 24 Jun 2024 15:09:21 +0200
Subject: [PATCH] check that we have all catchup nodes locally (#162)

* assert that we have all nodes locally

* throw instead of asserting

* emit warning and clear state if catchup fails

* safetyCatch err in open

* crash when block is not available locally
---
 index.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 4757fd1d..0163c7de 100644
--- a/index.js
+++ b/index.js
@@ -523,7 +523,10 @@ module.exports = class Autobase extends ReadyResource {
 
       if (length > w.end) w.end = length
 
-      const block = await w.writer.core.get(length - 1)
+      // we should have all nodes locally
+      const block = await w.writer.core.get(length - 1, { wait: false })
+
+      assert(block !== null, 'Catchup failed: local block not available')
 
       for (const dep of block.node.heads) {
         nodes.push(dep)