plantimestamp() function producing invalid value (0001-01-01T00:00:00Z)

[SunTrustDev]

Terraform Version

1.9.8

Terraform Configuration Files

locals {
  first_year = 2023
  current_timestamp = plantimestamp()
  current_year = formatdate("YYYY", local.current_timestamp)
  current_year_number = tonumber(local.current_year)
  table_years = toset(range(local.first_year, local.current_year_number + 2))
}
output "table_years" {
  value = toset(
    [ 
      for year in range(local.first_year, tonumber(formatdate("YYYY", local.current_timestamp)) + 2) : tostring(year)
    ]
  )
}

Debug Output

Can't find related debug traces

Expected Behavior

The output shows the current date at plan time (2024-10-24.T11:58:00Z).

Actual Behavior

The output being shown is "0001-01-01T00:00:00Z".
It causes the range function to fail with the following error:

Error: Error in function call
│ 
│   on ../../../../component/trip-shared/terraform/constants/outputs.tf line 19, in output "trip_iceberg_table_years":
│   19:       for year in range(local.first_year, tonumber(formatdate("YYYY", local.current_timestamp)) + 2) : tostring(year)
│     ├────────────────
│     │ while calling range(params...)
│     │ local.current_timestamp is "0001-01-01T00:00:00Z"
│     │ local.first_year is 2023

Steps to Reproduce

terraform plan

cannot directly reproduce in terraform console as planterraform does not exists there, but its output can be visualized with it.

(terraform console -> local.current_timestamp)

Additional Context

No response

References

No response

[jbardin]

Thanks @SunTrustDev!

This is a validation error, which happens before the plan. The timestamp should be unknown at that point, however the implementation is using time.Time directly so cannot take the unknown value into account.

[github-actions]

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