Does anyone have any advice on debugging the following `Type

Question

Does anyone have any advice on debugging the following `TypeError Cannot read property arn of undefined` To work around it I replace the resource output ARN with a static string but this is not ideal

witty-candle-66007 · Answer

Are you able to share the lb ts code A gut feeling is it might be a case where you need to use ` apply ` to resolve the arn value before using it <https www pulumi com docs intro concepts inputs outputs >

little-cartoon-10569 · Answer

That error message implies that the thing you re calling `arn` on doesn t exist I think `apply ` is unlikely to help in this case

little-cartoon-10569 · Answer

Apologies for pet peeve pictures of text preclude copying text out of the picture Real text versions of messages are much more helpful

witty-monitor-18849 · Answer

Apologies ```Previewing update demo inf Type Name Plan Info pulumi pulumi Stack immersify inf demo inf 1 error + pulumi providers aws eu west 1 create + aws s3 Bucket crud service logs bucket create + aws lb TargetGroup crud service http tg create + aws ec2 SecurityGroup crud service ec2 sg create + aws ec2 SecurityGroup crud service alb sg create + aws ec2 SecurityGroupRule events rds instance allow crud service create + aws ec2 SecurityGroupRule crud service alb allow http create + aws ec2 SecurityGroupRule crud service alb allow healthcheck create + aws ec2 SecurityGroupRule crud service alb allow https create + aws lb LoadBalancer crud service loadbalancer create + aws lb Listener crud service http redirect listener create Diagnostics pulumi pulumi Stack immersify inf demo inf error Running program Users mikaelallison workspace gdsgroup immersify inf failed with an unhandled exception TypeError Cannot read property arn of undefined at Object lt anonymous gt Users mikaelallison workspace gdsgroup immersify inf lb ts 62 34 at Module compile internal modules cjs loader js 1085 14 at Module m compile Users mikaelallison workspace gdsgroup immersify inf node modules ts node src index ts 439 23 at Module extensions js internal modules cjs loader js 1114 10 at Object require extensions lt computed gt as ts Users mikaelallison workspace gdsgroup immersify inf node modules ts node src index ts 442 12 at Module load internal modules cjs loader js 950 32 at Function Module load internal modules cjs loader js 790 12 at Module require internal modules cjs loader js 974 19 at require internal modules cjs helpers js 93 18 at Object lt anonymous gt Users mikaelallison workspace gdsgroup immersify inf route53 ts 5 1 ```

witty-monitor-18849 · Answer

The error is pointing to a cert I have passed to a listener for an application loadbalancer `acmCertIreland arn` ```new lb Listener `$ crudService http listener` loadBalancerArn crudServiceLoadBalancer arn port 443 protocol HTTPS sslPolicy ELBSecurityPolicy 2016 08 certificateArn acmCertIreland arn defaultActions type forward targetGroupArn crudServiceHttpTargetGroup arn dependsOn acmCertIreland ```

witty-monitor-18849 · Answer

The cert definitely exists I m using the cert elsewhere in the code base I suspect that maybe there is a dependency issue in the new resources I am trying to create and that this message might be a red herring However pasting the ARN in makes the error go away

little-cartoon-10569 · Answer

It s not saying that the certificate doesn t exist It s saying that `arn` is being called on `undefined` If you re using the `acmCertIreland` object elsewhere in the same conditional branch then could it be crudServiceLoadBalancer or crudServiceHttpTargetGroup that is undefined

witty-monitor-18849 · Answer

Hi < little cartoon 10569> Can you please clarify what you mean by conditional branch

witty-monitor-18849 · Answer

`acmCertIreland` is being used elsewhere in the stack

witty-monitor-18849 · Answer

The `crudServiceLoadBalancer` and `crudServiceHttpTargetGroup` are to be created See below ```export const crudServiceLoadBalancer = new lb LoadBalancer `$ crudService loadbalancer` name crudService internal false loadBalancerType application securityGroups crudServiceAlbSg id subnets vpc publicSubnetIds enableDeletionProtection true accessLogs bucket crudServiceLogsBucket bucket prefix crudService enabled true export const crudServiceHttpTargetGroup = new lb TargetGroup `$ crudService http tg` vpcId vpc id targetType instance protocol HTTP port 8080 deregistrationDelay 300 healthCheck interval 10 timeout 4 path actuator health healthyThreshold 2 unhealthyThreshold 4 new lb Listener `$ crudService http redirect listener` loadBalancerArn crudServiceLoadBalancer arn port 80 protocol HTTP defaultActions type redirect redirect port 443 protocol HTTPS statusCode HTTP 301 new lb Listener `$ crudService http listener` loadBalancerArn crudServiceLoadBalancer arn port 443 protocol HTTPS sslPolicy ELBSecurityPolicy 2016 08 certificateArn acmCertIreland arn defaultActions type forward targetGroupArn crudServiceHttpTargetGroup arn dependsOn acmCertIreland ```

little-cartoon-10569 · Answer

I was wondering if the code with the error is being called under one guard e g if stack is prod and the certificate is being called under another e g if stack is staging Just grasping at straws

witty-monitor-18849 · Answer

Oh I get you No no gates at present As you can see I have tried with depends option on the resource

witty-monitor-18849 · Answer

Do you think it is worth raising an issue Or am I lacking enough debug information

little-cartoon-10569 · Answer

I think more code is required to be sure Can you make a single MCVE in a gist or similar