无法使用CDK获取集群名称和ASG资源名称

import * as cdk from 'aws-cdk-lib';
import * as ec2 from 'aws-sdk/clients/ec2';
import * as autoscaling from 'aws-sdk/clients/autoscaling';

export class MyStack extends cdk.Stack {
  constructor(scope: cdk.Construct, id: string, props?: cdk.StackProps) {
    super(scope, id, props);

    // 获取集群名称
    const clusterName = this.node.tryGetContext('clusterName');

    // 获取ASG资源名称
    const asgName = this.getASGName();
  }

  private getASGName(): string {
    const ec2Client = new ec2.EC2();
    const autoscalingClient = new autoscaling.AutoScaling();

    // 获取EC2实例ID
    const instanceId = cdk.Aws.getInstanceId();

    // 根据EC2实例ID获取ASG资源名称
    const params = {
      InstanceIds: [instanceId],
    };

    return new Promise<string>((resolve, reject) => {
      ec2Client.describeInstances(params, (err, data) => {
        if (err) {
          reject(err);
        } else {
          const asgName = data.Reservations[0].Instances[0].Tags.find(
            (tag) => tag.Key === 'aws:autoscaling:groupName'
          ).Value;
          resolve(asgName);
        }
      });
    });
  }
}