feat: stats 增加使用中的连接数

src/client.ts

@@ -99,11 +99,17 @@ export class RDSClient extends Operator {
   }
 
   get stats() {
+    const acquiringConnections = this.#pool._acquiringConnections.length;
+    const allConnections = this.#pool._allConnections.length;
+    const freeConnections = this.#pool._freeConnections.length;
+    const connectionQueue = this.#pool._connectionQueue.length;
+    const busyConnections = allConnections - freeConnections - acquiringConnections;
     return {
-      acquiringConnections: this.#pool._acquiringConnections.length,
-      allConnections: this.#pool._allConnections.length,
-      freeConnections: this.#pool._freeConnections.length,
-      connectionQueue: this.#pool._connectionQueue.length,
+      acquiringConnections,
+      allConnections,
+      freeConnections,
+      connectionQueue,
+      busyConnections,
     };
   }
 

test/client.test.ts

@@ -1340,11 +1340,11 @@ describe('test/client.test.ts', () => {
   describe('get stats()', () => {
     it('should get client stats', async () => {
       const stats = db.stats;
-      console.log(stats);
       assert.equal(typeof stats.acquiringConnections, 'number');
       assert.equal(typeof stats.allConnections, 'number');
       assert.equal(typeof stats.freeConnections, 'number');
       assert.equal(typeof stats.connectionQueue, 'number');
+      assert.equal(typeof stats.busyConnections, 'number');
     });
   });