(aws-ecr): ecr.Repository.from_repository_name() method not returning the reference to repository

[rahul-ve]

❓ General Issue

The Question

Got the below repo in ECR

{
  "repositoryArn": "arn:aws:ecr:us-east-1:xxxxxxxxxxxx:repository/airflow",
  "registryId": "xxxxxxxxxxxx",
  "repositoryName": "airflow",
  "repositoryUri": "xxxxxxxxxxxx.dkr.ecr.us-east-1.amazonaws.com/airflow",
  "createdAt": "2020-06-18T05:11:10+10:00",
  "imageTagMutability": "MUTABLE",
  "imageScanningConfiguration": {
      "scanOnPush": false
  }
}

and when building a cdk script, I need to reference this repo, I tried the below:

repo_1 = ecr.Repository.from_repository_name(self, id='airflow_repo', repository_name= 'airflow')
print(repo_1.repository_arn)
print(repo_1.repository_uri)

and the output is:

arn:${Token[AWS::Partition.3]}:ecr:${Token[AWS::Region.4]}:${Token[AWS::AccountId.0]}:repository/airflow
${Token[TOKEN.15]}.dkr.ecr.${Token[TOKEN.14]}.${Token[AWS::URLSuffix.1]}/airflow

below works as expected:

repo_ = ecr.Repository.from_repository_arn(self, id = 'airflow', repository_arn='arn:aws:ecr:us-east-1:xxxxxxxxxxxx:repository/airflow')
print(repo_.repository_arn)
print(repo_.repository_uri)

and the output is:

arn:aws:ecr:us-east-1:xxxxxxxxxxxx:repository/airflow
xxxxxxxxxxxx.dkr.ecr.us-east-1.${Token[AWS::URLSuffix.1]}/airflow

I am using this method incorrectly?
ecr.Repository.from_repository_name()

Environment

• CDK CLI Version: 1.45.0 (build 0cfab15)
• Module Version: 1.45.0 (all of them)
• Node.js Version: v12.17.0
• OS: Windows 10
• Language (Version): Python (3.8.2)

[MrArnoldPalmer]

@rahul-ve The output looks like its what is expected unless I'm missing something. Is the imported IRepository construct not working as expected when passed to another construct or otherwise breaking your app?

CDK uses a system of Tokens to reference values that may or may not be present during stack synthesis. That is what you're seeing when you print the repository arn of the imported resource.

[rahul-ve]

@MrArnoldPalmer Using either of the methods allows for proper "synth" but deployment fails when the from_repository_name() method is used. Is there a way to identify the cause?

[MrArnoldPalmer]

@rahul-ve what is the error that comes up during deploy?

#8461 - Import doesn't check that the repository exists, doesn't seem like your issue is related to that but worth double checking.

[rahul-ve]

@MrArnoldPalmer I will have to do another test and cut down my stack to keep it specific. Will report back in the next couple of days.

[SomayaB]

Hi @rahul-ve, do you have any updates?

[rahul-ve]

Hi @rahul-ve, do you have any updates?

Sorry, I am unable to spend time on this issue right now, we can close this for now, if I encounter this issue again, will reopen it.
Thank you.