Create and populate nodes_socket table

backend/src/repositories/NodesSocketsRepository.ts

@@ -0,0 +1,45 @@
+import { ResultSetHeader } from 'mysql2';
+import DB from '../database';
+import logger from '../logger';
+
+export interface NodeSocket {
+  publicKey: string;
+  network: string | null;
+  addr: string;
+}
+
+class NodesSocketsRepository {
+  public async $saveSocket(socket: NodeSocket): Promise<void> {
+    try {
+      await DB.query(`
+        INSERT INTO nodes_sockets(public_key, socket, type)
+        VALUE (?, ?, ?)
+      `, [socket.publicKey, socket.addr, socket.network]);
+    } catch (e: any) {
+      if (e.errno !== 1062) { // ER_DUP_ENTRY - Not an issue, just ignore this
+        logger.err(`Cannot save node socket (${[socket.publicKey, socket.addr, socket.network]}) into db. Reason: ` + (e instanceof Error ? e.message : e));
+        // We don't throw, not a critical issue if we miss some nodes sockets
+      }
+    }
+   }
+
+   public async $deleteUnusedSockets(publicKey: string, addresses: string[]): Promise<number> {
+    if (addresses.length === 0) {
+      return 0;
+    }
+    try {
+      const query = `
+        DELETE FROM nodes_sockets
+        WHERE public_key = ?
+        AND socket NOT IN (${addresses.map(id => `"${id}"`).join(',')})
+      `;
+      const [result] = await DB.query<ResultSetHeader>(query, [publicKey]);
+      return result.affectedRows;
+    } catch (e) {
+      logger.err(`Cannot delete unused sockets for ${publicKey} from db. Reason: ` + (e instanceof Error ? e.message : e));
+      return 0;
+    }
+   }
+}
+
+export default new NodesSocketsRepository();