@white-balloon-205 I just tried your example above

const repo = new awsx.ecr.Repository('example-ecr-repository');

let image;
try {
  image = repo.repository.name.apply((name) => {
    return aws.ecr.getImage({
      repositoryName: name,
      imageTag: 'latest',
    });
  });
} catch (e) {
  image = 'caught';
}

console.log('------------------');
console.log(image);

I have a couple of questions- 1. i thought apply was supposed to wait for the output... in this example on first creation of the stack the repo doesn't exist yet so i get a

RepositoryNotFoundException 'example-ecr-repository-8e2cb70' does not exist in the registry with id '4744319xxxxx'

but it's got the name and continuing before the repo exists. is it possible to wait for the creation?

ecr.getImage

doesn't appear to support

dependsOn

2. the try catch is totally ignored so how can i achieve this? I need to make an image if the

latest

one doesn't exist yet

I've just found I can use the premise you've described here https://github.com/pulumi/pulumi/issues/3364 to use try/catch.

const image = pulumi
  .all([repo.repository.repositoryUrl, repo.repository.name])
  .apply(async ([url, name]) => {
    try {
      await aws.ecr.getImage(
        {
          repositoryName: name,
          imageTag: 'latest',
        },
        { async: true }
      );

      return `${url}:latest`;
    } catch (e) {
      return 'nginx:latest';
    }
  });

this solves question 2, but also accidentally solves question 1 because the catch now catches the RepositoryNotFoundException. not sure why it's not waiting for it's creation first before calling apply(fn)