schema ResourceData Set does not work for nested types like TypeList

[DavidGOrtega]

SDK version

github.com/hashicorp/terraform-plugin-sdk/v2 v2.4.0

Relevant provider source code

d.Set("machine.0.custom_data", customData)

Terraform Configuration Files

resource "runner" "runner-az" {
    token = "arszDpb3xtNdKaXmQ6vN"
    repo = "https://gitlab.com/DavidGOrtega/3_tensorboard"
    driver = "gitlab"
    labels = "tf"
    machine {
      cloud = "azure"
      region = "us-west"
      instance_type = "m"
    }
} 

Debug Output

Expected Behavior

Data should contain the given customData

Actual Behavior

Totally ignored

References

• Updating TypeMap during create doesn't work #81
• SetNew does not work on nested fields #459
• d.Set a non-computed schema.Set property during terraform apply will not take effect #618

[paddycarver]

@DavidGOrtega have you checked the error return from d.Set? Are you sure it's not returning an error?

[bflad]

Hi @DavidGOrtega 👋 As mentioned above, catching the returned error from the (*ResourceData).Set() call, e.g.

if err := d.Set("machine.0.custom_data", customData); err != nil {
  // return fmt.Errorf("unable to set machine custom_data: %w", err) // if using non-context-aware CRUD functions
  return diag.Errorf("unable to set machine custom_data: %w", err)
}

Should yield more information about any issues while writing state data. If you have any questions or further information to provide, such as the error output, please create a new issue and we can take a fresh look. 👍

[github-actions]

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