cloudflare_list is very slow when working with bulk redirect lists

[thedoc31]

Confirmation

• This is a bug with an existing resource and is not a feature request or enhancement. Feature requests should be submitted with Cloudflare Support or your account team.
• I have searched the issue tracker and my issue isn't already found.
• I have replicated my issue using the latest version of the provider and it is still present.

Terraform and Cloudflare provider version

Terraform v1.9.8
on darwin_arm64

• provider registry.terraform.io/cloudflare/cloudflare v4.43.0

Affected resource(s)

cloudflare_list

Terraform configuration files

terraform {
  required_providers {
    cloudflare = {
      source = "cloudflare/cloudflare"
      version = "~> 4"
    }
  }
}

provider "cloudflare" {
  api_token = "<redacted>"
}

variable "zone_id" {
  default = "<redacted>"
}

variable "account_id" {
  default = "<redacted>"
}

variable "domain" {
  default = "<redacted>"
}

Link to debug output

https://gist.github.com/thedoc31/e27b01df01a13bd68977728c353617ca

Panic output

N/A

Expected output

Lists with a large number of items export as quickly as other objects being managed by the terraform provider

Actual output

The longer the list, the longer the terraform provider takes to work through it. A list with more than 1800 items takes 90+ seconds to load, and a second list with 5700 items takes 7-10 minutes during every terraform plan/apply. It appears the terraform provider may iterate over each list item one at a time when it should load the whole thing as one big blob of data.

Steps to reproduce

1. Generate a bulk redirect list with 5000+ items
2. Run the cloudflare_list operation on that bulk redirect list
3. Wait...

Additional factoids

I am trying to migrate a full configuration set from one Cloudflare account to another.

References

N/A

[github-actions]

Terraform debug log detected ✅

[github-actions]

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[jacobbednarz]

duplicate of #4293