amazon-web-services - AWS CDK：如何在同一应用程序中引用跨堆栈资源？

Question

我有一个应用程序，它有两个堆栈，都在同一个区域/帐户中。其中一个堆栈需要另一个堆栈中存在的 lambda 的 ARN。我如何参考这个？

// within stackA constructor
public StackA(Construct scope, String id, StackProps props) {
        SingletonFunction myLambda = SingletonFunction.Builder.create(this, "myLambda")
                                                              // some code here
                                                              .build()
        CfnOutput myLambdaArn = CfnOutput.Builder.create(this, "myLambdaArn")
                                                  .exportName("myLambdaArn")
                                                  .description("ARN of the lambda that I want to use in StackB")
                                                  .value(myLambda.getFunctionArn())
                                                  .build();
    
}

App app = new App();
Stack stackA = new StackA(app, "stackA", someAProps);    
Stack stackB = new StackB(app, "stackB", someBProps);
stackB.dependsOn(stackA);

如何将 ARN 传递到 StackB？

标签： amazon-web-servicesamazon-cloudformationaws-cdk

Answer 1

您可以访问不同堆栈中的资源，只要它们位于同一账户和 AWS 区域中。以下示例定义了堆栈 stack1，它定义了一个 Amazon S3 存储桶。然后它定义了第二个堆栈 stack2，它从 stack1 中获取存储桶作为构造函数属性。

// Helper method to build an environment
static Environment makeEnv(String account, String region) {
    return Environment.builder().account(account).region(region)
            .build();
}

App app = new App();

Environment prod = makeEnv("123456789012", "us-east-1");

StackThatProvidesABucket stack1 = new StackThatProvidesABucket(app, "Stack1",
        StackProps.builder().env(prod).build());

// stack2 will take an argument "bucket"
StackThatExpectsABucket stack2 = new StackThatExpectsABucket(app, "Stack,",
        StackProps.builder().env(prod).build(), stack1.getBucket());