Cross stack vpc causes unresolved resource dependencies error
See original GitHub issueHi, creating a vpc in a child stack (not nested), and creating some resources, that depend on the vpc, in another child stack will result in a ValidationError. I was able to reproduce this with application loadbalancers (only internet facing) aswell as an aurora cluster (public and private).
Reproduction Steps
import cdk = require('@aws-cdk/core');
import { NetworkStack } from './Network-stack';
import { InstancesStack } from './Instances-stack';
export class TestStack extends cdk.Stack {
constructor(scope: cdk.App, id: string, props: cdk.StackProps) {
super(scope, id, props);
const network = new NetworkStack(this, "NetworkStack", props);
new InstancesStack(this, "Instances", {
env: props.env,
network: network
});
}
}
import cdk = require('@aws-cdk/core');
import ec2 = require('@aws-cdk/aws-ec2');
export class NetworkStack extends cdk.Stack {
public readonly vpc: ec2.Vpc;
constructor(scope: cdk.Stack, id: string, props: cdk.StackProps) {
super(scope, id, props);
this.vpc = new ec2.Vpc(this, "vpc", {
cidr: "10.0.0.0/16",
maxAzs: 3,
subnetConfiguration: [
{
cidrMask: 20,
subnetType: ec2.SubnetType.PRIVATE,
name: "subnet-private"
},
{
cidrMask: 20,
subnetType: ec2.SubnetType.PUBLIC,
name: "subnet-public"
}
],
natGateways: 2
});
}
}
import cdk = require('@aws-cdk/core');
import loadbalancer = require('@aws-cdk/aws-elasticloadbalancingv2');
import { NetworkStack } from './Network-stack';
export interface theseProps extends cdk.StackProps {
network: NetworkStack
}
export class InstancesStack extends cdk.Stack {
constructor(scope: cdk.Stack, id: string, props: theseProps) {
super(scope, id, props);
new loadbalancer.ApplicationLoadBalancer(this, "testLB", {
vpc: props.network.vpc,
internetFacing: true
});
}
}
Error Log
cdk deploy *
TestStack
TestStack: deploying...
TestStack: creating CloudFormation changeset...
✅ TestStack (no changes)
Stack ARN:
arn:aws:cloudformation:eu-west-1:123456789:stack/TestStack/f7358b50-ec24-11e9-8e0e-02c03455965c
TestStackNetworkStackE68E9FD0
TestStackNetworkStackE68E9FD0: deploying...
TestStackNetworkStackE68E9FD0: creating CloudFormation changeset...
...
✅ TestStackNetworkStackE68E9FD0
Outputs:
TestStackNetworkStackE68E9FD0.ExportsOutputRefvpcsubnetpublicSubnet1SubnetF125D982384FC8F2 = subnet-05bb64c9b53308b7c
TestStackNetworkStackE68E9FD0.ExportsOutputRefvpcA2121C384D1B3CDE = vpc-02997d94566f805bf
TestStackNetworkStackE68E9FD0.ExportsOutputRefvpcsubnetpublicSubnet2Subnet2731CC5E2E3D2FF3 = subnet-0b862d79b52959ec6
TestStackNetworkStackE68E9FD0.ExportsOutputRefvpcsubnetpublicSubnet3Subnet7494E9BC8FCFC236 = subnet-03944fc3ed16a79b4
Stack ARN:
arn:aws:cloudformation:eu-west-1:123456789:stack/TestStackNetworkStackE68E9FD0/2d351770-ec25-11e9-9415-06982f8c16e4
TestStackInstancesF0B37D31
TestStackInstancesF0B37D31: deploying...
TestStackInstancesF0B37D31: creating CloudFormation changeset...
❌ TestStackInstancesF0B37D31 failed: ValidationError: Template format error: Unresolved resource dependencies [vpcsubnetpublicSubnet3DefaultRoute3905C18B, vpcsubnetpublicSubnet2DefaultRoute7436D83A, vpcsubnetpublicSubnet1Defau
ltRouteA1448C8B] in the Resources block of the template
Template format error: Unresolved resource dependencies [vpcsubnetpublicSubnet3DefaultRoute3905C18B, vpcsubnetpublicSubnet2DefaultRoute7436D83A, vpcsubnetpublicSubnet1DefaultRouteA1448C8B] in the Resources block of the template
Environment
- CLI Version : 1.16.232
- Framework Version: 1.12.0
- OS : Windows 10
- Language : TypeScript
This is 🐛 Bug Report
Issue Analytics
- State:
- Created 4 years ago
- Reactions:4
- Comments:6 (6 by maintainers)
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Apologies for the confusion, managed to reproduce this in 1.18.0:
Validated that this is going to be resolved by #5211
I can confirm this is fixed in master. I did a full build and linked dependencies into a project last night.
cdk deploy
worked perfectly with cross stack VPCs. No moretemplate reference error could not reference MyAppVPCRoute
. 👍