From eb2cfb18a15b60c80554ec9423571e903308e6e4 Mon Sep 17 00:00:00 2001
From: ScottyPoi <scott.simpson@ethereum.org>
Date: Mon, 3 Feb 2025 13:38:25 -0700
Subject: [PATCH] store and rebuild cache from DB

---
 packages/portalnetwork/src/client/client.ts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/packages/portalnetwork/src/client/client.ts b/packages/portalnetwork/src/client/client.ts
index 51f15ff6b..575c7e9da 100644
--- a/packages/portalnetwork/src/client/client.ts
+++ b/packages/portalnetwork/src/client/client.ts
@@ -298,6 +298,10 @@ export class PortalNetwork extends EventEmitter<PortalNetworkEvents> {
     await this.discv5.start()
     await this.db.open()
     const storedIndex = await this.db.getBlockIndex()
+    const storedEnrCache = await this.db.get('enr_cache')
+    if (storedEnrCache) {
+      this.enrCache = new Map(JSON.parse(storedEnrCache))
+    }
     for (const network of this.networks.values()) {
       try {
         // Check for stored radius in db
@@ -334,6 +338,7 @@ export class PortalNetwork extends EventEmitter<PortalNetworkEvents> {
     await this.discv5.stop()
     this.discv5.removeAllListeners()
     this.removeAllListeners()
+    await this.db.put('enr_cache', JSON.stringify([...this.enrCache.entries()]))
     await this.db.close()
     for (const network of this.networks.values()) {
       network.stopRefresh()