Hi Using GCP and am trying to config some resources only if Pulumi Community #python

Hi, Using GCP and am trying to config some resour...

ripe-winter-58734

01/15/2025, 4:17 PM

Hi, Using GCP and am trying to config some resources only if I can find a Docker image already built like this:

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try:
    run_job_infra_image = gcp.artifactregistry.get_docker_image_output(
        location=repository.location,
        repository_id=repository.repository_id,
        image_name=f"run-job-infra-{env_long}")
except Exception as e:
    run_job_infra_image = None

if run_job_infra_image:
   ... build some more stuff

However when I "pulumi up", script raises exception and stops... Any hints on why I cannot catch the exception ? Error log: Exception: invoke of gcpartifactregistry/getDockerImagegetDockerImage failed: invocation of gcpartifactregistry/getDockerImagegetDockerImage returned an error: invoking gcpartifactregistry/getDockerImagegetDockerImage: 1 error occurred: * Requested image was not found.

modern-zebra-45309

01/16/2025, 8:30 AM

I believe that

gcp.artifactregistry.get_docker_image_output

is executed when the program is executed, but the actual get operation runs when the Pulumi deployment engine is bringing your infrastructure into the desired state. Like all Pulumi Outputs, it's only resolved at runtime.

modern-zebra-45309

01/16/2025, 8:32 AM

You can verify this by adding

print

statements in your code, like this:

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print("Attempting to find Docker image")
try:
    run_job_infra_image = gcp.artifactregistry.get_docker_image_output(
        location=repository.location,
        repository_id=repository.repository_id,
        image_name=f"run-job-infra-{env_long}")
    print("Executed get_docker_image_output()")
except Exception as e:
    run_job_infra_image = None
print("Done with the try/except block")
if run_job_infra_image:
   ... build some more stuff

modern-zebra-45309

01/16/2025, 8:33 AM

You should see that all three messages are printed before the Pulumi deployment engine starts working.

modern-zebra-45309

01/16/2025, 8:35 AM

According to the documentation,