amazon-elastic-beanstalk - AWS CDK : Get LoadBalancer ARN of ElasticBeanstalk Environment for ApiGateway VPC Link

Question

我正在使用 AWS CDK 创建带有网络负载均衡器的 Elastic Beanstalk 环境。

Elastic Beanstalk 应用程序和负载均衡器都位于 VPC 的私有(private)子网中。
我想将 API 网关与使用网络负载均衡器的 VPC 链接一起使用。

在我的 CDK 应用程序中，我正在创建一个 elasticbeanstalk.CfnEnvironment。对于我的 ApiGateway，我有一个这样的 VPC 链接:

const env: elasticbeanstalk.CfnEnvironment = this.createElasticBeanstalkEnvironment();
const loadBalancer = elbv2.NetworkLoadBalancer.fromNetworkLoadBalancerAttributes(this.stack, `DjangoNetworkLoadBalancer`, {
    loadBalancerArn: env.loadBalancerArn (not available!)
})

const link = new apigateway.VpcLink(this.stack, `DjangoLoadBalancerLink`, {
    targets: [loadBalancer],
});

...

private createElasticBeanstalkEnvironment() {
    const env = new elasticbeanstalk.CfnEnvironment(this.stack, 'DjangoBeanstalkEnv', {
        applicationName: 'TestApp',
        environmentName: 'TestAppDev',
        solutionStackName: '64bit Amazon Linux 2 v3.0.1 running Python 3.7'
    });

    env.optionSettings = [
        {
            namespace: 'aws:elasticbeanstalk:environment',
            optionName: 'LoadBalancerType',
            value: 'network'
        },
        {
            namespace: 'aws:elbv2:listener:443',
            optionName: 'ListenerEnabled',
            value: 'true'
        },
        {
            namespace: 'aws:elbv2:listener:default',
            optionName: 'ListenerEnabled',
            value: 'false' 
        }
    ]

    return env;
}

不幸的是我不能使用 env.loadBalancerArn陈述。
有没有可能如何检索环境的负载均衡器？

Answer 1

这应该可以解决问题。
CloudFormation

!Join
      - ""
      - - !Sub 'arn:aws:elasticloadbalancing:${AWS::Region}:${AWS::AccountId}:loadbalancer/net/'
        - !Select [0, !Split ["-", !GetAtt ElasticBeanstalkEnvironment.EndpointURL]]
        - '-'
        - !Select [1, !Split ["-", !GetAtt ElasticBeanstalkEnvironment.EndpointURL]]
        - '-'
        - !Select [2, !Split ["-", !GetAtt ElasticBeanstalkEnvironment.EndpointURL]]
        - '/'
        - !Select [0, !Split [".", !Select [3, !Split ["-", !GetAtt ElasticBeanstalkEnvironment.EndpointURL]]]]

CDK( typescript )

cdk.Fn.join("", [
        'arn:aws:elasticloadbalancing:'.concat(stack.region).concat(':').concat(stack.account).concat(':loadbalancer/net/'),
        cdk.Fn.select(0, cdk.Fn.split("-", this.BeanstalkCfnEnvironment.getAtt('EndpointUrl').toString())),
        '-',
        cdk.Fn.select(1, cdk.Fn.split("-", this.BeanstalkCfnEnvironment.getAtt('EndpointUrl').toString())),
        '-',
        cdk.Fn.select(2, cdk.Fn.split("-", this.BeanstalkCfnEnvironment.getAtt('EndpointUrl').toString())),
        '/',
        cdk.Fn.select(0, cdk.Fn.split(".", cdk.Fn.select(3, cdk.Fn.split('-', this.BeanstalkCfnEnvironment.getAtt('EndpointUrl').toString())))),
      ])