add auto invalidation of dns cache

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);
   }
 }

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.
    *

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();
+      }
+    });
   }
 
   /**