Joh*_*ohn 8 amazon-web-services aws-cloudformation aws-cdk
我有一个应用程序,它有两个堆栈,都在同一个区域/帐户内。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);
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如何将 ARN 传入 StackB?
Chu*_*uck 28
CDK的官方文档有一个在堆栈之间共享S3存储桶的完整示例。我将其复制到下面以供更快参考。
/**
* Stack that defines the bucket
*/
class Producer extends cdk.Stack {
public readonly myBucket: s3.Bucket;
constructor(scope: cdk.App, id: string, props?: cdk.StackProps) {
super(scope, id, props);
const bucket = new s3.Bucket(this, 'MyBucket', {
removalPolicy: cdk.RemovalPolicy.DESTROY,
});
this.myBucket = bucket;
}
}
interface ConsumerProps extends cdk.StackProps {
userBucket: s3.IBucket;
}
/**
* Stack that consumes the bucket
*/
class Consumer extends cdk.Stack {
constructor(scope: cdk.App, id: string, props: ConsumerProps) {
super(scope, id, props);
const user = new iam.User(this, 'MyUser');
props.userBucket.grantReadWrite(user);
}
}
const producer = new Producer(app, 'ProducerStack');
new Consumer(app, 'ConsumerStack', { userBucket: producer.myBucket });
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您可以访问不同堆栈中的资源,只要它们在同一账户和 AWS 区域中即可。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,它将 stack1 中的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());
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我发现所有答案都在正确的道路上,但没有一个答案完全和/或很好地解释了它。在此示例中,我将 VPC 从 VPC 堆栈传递到 ECS 集群。
首先,向原始堆栈添加一个属性。每当创建资产时都会设置此属性:
export class VpcStack extends cdk.Stack {
readonly vpc: Vpc;
constructor(scope: cdk.Construct, id: string, props?: cdk.StackProps) {
super(scope, id, props);
// Here
this.vpc = new Vpc(this, 'vpc', {
maxAzs: 3,
cidr: '10.0.0.0/16',
});
});
}
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接下来,需要此属性作为消费堆栈的参数:
// Create an interface that extends cdk.StackProps
// The VPC property is added here
interface EcsClusterStackProps extends cdk.StackProps {
vpc: Vpc,
}
export class EcsClusterStack extends cdk.Stack {
// Use your interface instead of the regular cdk.StackProps
constructor(scope: cdk.Construct, id: string, props: EcsClusterStackProps) {
super(scope, id, props);
// Use the passed-in VPC where you need it
new Cluster(this, "myCluster", {
capacity: {
instanceType: InstanceType.of(InstanceClass.M6I, InstanceSize.LARGE)
},
clusterName: "myCluster",
vpc: props.vpc, // Here
});
}
}
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第三,传递应用程序文件中的引用:
const app = new cdk.App();
// Create the VPC stack
const vpcStack = new VpcStack(app, 'vpc-stack', {
env: { account: process.env.CDK_DEFAULT_ACCOUNT, region: process.env.CDK_DEFAULT_REGION },
});
// Pass the VPC directly to the consuming stack's constructor
const ecsClusterStack = new EcsClusterStack(app, 'ecs-cluster-stack', {
vpc: vpcStack.vpc, // Here
});
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希望这有助于澄清一些模棱两可的领域。
选项1:
使用构造函数将数据从堆栈 A 传递到堆栈 B:
您可以扩展cdk.stack
并创建一个包含 stackA 的新类。
在该堆栈中,使用public XXX: string\number (etc)
(参见示例中的第 2 行)公开所需的相关数据。
稍后,只需将此数据传递给 StackB 构造函数(您也可以使用 props 传递它)。
工作代码片段:
堆栈 A:
export class StackA extends cdk.Stack {
public YourKey: KEY_TYPE;
constructor(scope: cdk.Construct, id: string, props: cdk.StackProps ) {
super(scope, id, props);
Code goes here...
// Output the key
new cdk.CfnOutput(this, 'KEY', { value: this.YourKey });
}
}
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堆栈 B:
export class StackB extends cdk.Stack {
constructor(scope: cdk.Construct, id: string,importedKey: KEY_TYPE, props: cdk.props) {
super(scope, id, props)
Code goes here...
console.log(importedKey)
}
}
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垃圾箱:
const importedKey = new StackA(app, 'id',props).YourKey;
new StackB(app, 'id',importedKey,props);
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选项 2:
有时最好将此类内容保存在参数存储中并从那里读取。
更多信息在这里。
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