Heya again! I have a question regarding using existing resource parameters as inputs when creating new resources. I went through the "Input and Outputs" page on the documentation but I still can't seem to get it to work. For example - When I try to create a

aws.cloudwatch.MetricAlarm

and I want to use

<http://aws.lb|aws.lb>.TargetGroup.name

to construct the

resource_name

I get this error. source:

aws.cloudwatch.MetricAlarm(
            resource_name=Output.concat("", target_group.name, "-CPUHigh-alarm"),

error:

raise TypeError("Expected resource name to be a string")
    TypeError: Expected resource name to be a string
    error: an unhandled error occurred: Program exited with non-zero exit code: 1

Surprisingly, this same approach works for

aws.cloudwatch.MetricAlarm.dimensions

treat_missing_data="breaching",
            dimensions={
                "TargetGroup": Output.concat("", args.target_group.name),
            },

I haven't been able to figure out how to use existing resource fields when creating new resources. What am I missing?

I can't speak to the Python SDK in particular, but in the one case, it sounds like Outputs are accepted as Inputs, but the other the Output needs to be applied.

The resource name is internal to Pulumi and must always be a plain string.

Is there a way to construct

resource_name

from an existing

Resource

object? Seeing that

resource_name

is a

required

property for creating new resources, how do you suggest we set this value dynamically?