From 88472c81e926d8f20de3803628f62815ade09f04 Mon Sep 17 00:00:00 2001
From: Liam <liam@fascinated.cc>
Date: Wed, 3 Jan 2024 09:46:46 +0000
Subject: [PATCH] add auto invalidation of dns cache

---
 src/influx/influx.ts        | 6 +++---
 src/server/server.ts        | 9 +++++++++
 src/server/serverManager.ts | 7 +++++++
 3 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/src/influx/influx.ts b/src/influx/influx.ts
index 5f52f13..8666f8a 100644
--- a/src/influx/influx.ts
+++ b/src/influx/influx.ts
@@ -14,13 +14,13 @@ export default class Influx {
       url: Config.influx.url,
       token: Config.influx.token,
     });
-    logger.info("InfluxDB initialized");
-
     this.writeApi = this.influx.getWriteApi(
       Config.influx.org,
       Config.influx.bucket,
       "ms"
     );
+
+    logger.info("InfluxDB initialized");
   }
 
   /**
@@ -28,7 +28,7 @@ export default class Influx {
    *
    * @param point the point to write
    */
-  public async writePoint(point: Point): Promise<void> {
+  public writePoint(point: Point) {
     this.writeApi.writePoint(point);
   }
 }
diff --git a/src/server/server.ts b/src/server/server.ts
index 86663d2..c2d66fc 100644
--- a/src/server/server.ts
+++ b/src/server/server.ts
@@ -179,6 +179,15 @@ export default class Server {
     });
   }
 
+  /**
+   * Invalidates the DNS cache for the server.
+   */
+  public invalidateDns() {
+    this.dnsInfo = {
+      hasResolved: false,
+    };
+  }
+
   /**
    * Returns the name of the server.
    *
diff --git a/src/server/serverManager.ts b/src/server/serverManager.ts
index b761847..ea01ef9 100644
--- a/src/server/serverManager.ts
+++ b/src/server/serverManager.ts
@@ -23,6 +23,13 @@ export default class ServerManager {
     cron.schedule(Config.pinger.pingCron, () => {
       this.pingServers();
     });
+
+    cron.schedule(Config.pinger.dnsInvalidationCron, () => {
+      logger.info("Invalidating DNS cache for all servers");
+      for (const server of this.servers) {
+        server.invalidateDns();
+      }
+    });
   }
 
   /**