Is there any plan to introduce custom exceptions for pulumi? I just noticed that

runtime.invoke

raises

Exception

which is not a good practice in python and one should use custom exceptions, so at least raising

PulumiError

or something would be great. https://github.com/pulumi/pulumi/blob/master/sdk/python/lib/pulumi/runtime/invoke.py#L121 @red-match-15116 Is there any chance that there is an existing issue about this? (I could not find any) I bumped into this trying to get an existing RDS instance when I found out that the

classic

AWS provider differentiates between 2 types and I'm only interested in arguments that they have in common.

try:
    db = rds.get_cluster(
        cluster_identifier=db_params.apply(lambda x: x["db"]["identifier"]),
        opts=pulumi.InvokeOptions(provider=ec1_provider),
    )
except Exception as exc:
    print(type(exc))
    db = rds.get_instance(
        db_instance_identifier=db_params.apply(lambda x: x["db"]["identifier"]),
        opts=pulumi.InvokeOptions(provider=ec1_provider),
    )

AWS SDK in this case raises

DBClusterNotFoundFault

but I guess that

pulumi.runtime.invoke

is not smart enough to raise this exception.

Hey! I don’t believe there’s an issue for this and it’s not currently on the roadmap. Feel free to open an issue.