Terraform for-each com lista de objetos

Question

Eu tenho a seguinte variável no arquivo variables.tf:

variable tenants {
  description = "Map of project names to configuration."
  type = list(object({
    name  = string
    dname = string
    desc  = string
    site  = list(string)
  }))
  default = [{
      name  = "Tenant-1",
      dname = "Tenant-1",
      desc  = "Test Tenant 1",
      site  = ["site1", "site2"]
    },
    {
      name  = "Tenant-2",
      dname = "Tenant-2",
      desc  = "Test Tenant 2",
      site  = ["site1"]
    }]
}

No meu arquivo main.tf, gostaria de fazer um loop nesta lista. Eu tenho o seguinte código no arquivo main.tf:

resource "mso_tenant" "restenant" {
  for_each = {for i, v in var.tenants:  i => v}
    name         = each.value.name
    display_name = each.value.dname
    description  = each.value.desc
    site_associations {
      site_id =  each.value.site
  }
}

Portanto, o resultado final deve ser que 2 inquilinos sejam criados com os atributos conforme especificado no arquivo de variável. Portanto, tenant1 terá 2 site_associations e tenant2 terá 1 associação depois de criada.

O resultado deve ser:

name         = "Tenant-1"
display_name = "Tenant-1"
description  = "Test Tenant 1"
site_associations {
  site_id = site1
  site_id = site2
}

e

name         = "Tenant-2"
display_name = "Tenant-2"
description  = "Test Tenant 2"
site_associations {
   site_id = site1
}

Tentei o seguinte:

resource "mso_tenant" "restenant" {
  for_each = {for i, v in var.tenants:  i => v}
    name         = each.value.name
    display_name = each.value.dname
    description  = each.value.desc
    site_associations {
      site_id =  each.value.site
  }
}

Isso funciona para o name, dnamee descnão itera sobre a variável do site (que é uma lista). Isso resulta na mensagem de erro:

each.value.site é uma lista de string com 1 elemento Valor impróprio para o atributo "site_id": string obrigatório.

Tentei resolver da seguinte forma:

resource "mso_tenant" "restenant" {
  for_each = {for i, v in var.tenants:  i => v}
    
    name         = each.value.name
    display_name = each.value.dname
    description  = each.value.desc
    site_associations {
      site_id = [for site in each.value.site: site]
  }
}

mas isso também dá:

each.value.site é uma lista de string com 2 elementos Valor impróprio para o atributo "site_id": string obrigatório.

Answer 1

O que você está procurando é um bloqueio dinâmico: https://www.terraform.io/docs/configuration/expressions.html#dynamic-blocks

Original:

site_associations {
    site_id =  each.value.site
}

Dinâmico:

dynamic "site_associations"{
    for_each = each.value.site
    content {
        site_id = site_associations.value
    }
}

O dynamicbloco permite que você crie outro for_eachloop sobre o each.value.site.

Nota: o valor dentro do bloco dinâmico é referenciado usando o nome do bloco site_associations.value

Main.tf completo:

variable tenants {
  description = "Map of project names to configuration."
  type = list(object({
    name  = string
    dname = string
    desc  = string
    site  = list(string)
  }))
  default = [{
      name  = "Tenant-1",
      dname = "Tenant-1",
      desc  = "Test Tenant 1",
      site  = ["site1", "site2"]
    },
    {
      name  = "Tenant-2",
      dname = "Tenant-2",
      desc  = "Test Tenant 2",
      site  = ["site1"]
    }]
}

resource "mso_tenant" "restenant" {
  for_each = {for i, v in var.tenants:  i => v}
    name         = each.value.name
    display_name = each.value.dname
    description  = each.value.desc
    dynamic "site_associations"{
    for_each = each.value.site
    content {
      site_id = site_associations.value
    }
    }

}

Resultado do plano:

  # mso_tenant.restenant["0"] will be created
  + resource "mso_tenant" "restenant" {
      + description  = "Test Tenant 1"
      + display_name = "Tenant-1"
      + id           = (known after apply)
      + name         = "Tenant-1"

      + site_associations {
          + aws_access_key_id         = (known after apply)
          + aws_account_id            = (known after apply)
          + aws_secret_key            = (known after apply)
          + azure_access_type         = (known after apply)
          + azure_active_directory_id = (known after apply)
          + azure_application_id      = (known after apply)
          + azure_client_secret       = (known after apply)
          + azure_subscription_id     = (known after apply)
          + is_aws_account_trusted    = (known after apply)
          + site_id                   = "site1"
          + vendor                    = (known after apply)
        }
      + site_associations {
          + aws_access_key_id         = (known after apply)
          + aws_account_id            = (known after apply)
          + aws_secret_key            = (known after apply)
          + azure_access_type         = (known after apply)
          + azure_active_directory_id = (known after apply)
          + azure_application_id      = (known after apply)
          + azure_client_secret       = (known after apply)
          + azure_subscription_id     = (known after apply)
          + is_aws_account_trusted    = (known after apply)
          + site_id                   = "site2"
          + vendor                    = (known after apply)
        }

      + user_associations {
          + user_id = (known after apply)
        }
    }

  # mso_tenant.restenant["1"] will be created
  + resource "mso_tenant" "restenant" {
      + description  = "Test Tenant 2"
      + display_name = "Tenant-2"
      + id           = (known after apply)
      + name         = "Tenant-2"

      + site_associations {
          + aws_access_key_id         = (known after apply)
          + aws_account_id            = (known after apply)
          + aws_secret_key            = (known after apply)
          + azure_access_type         = (known after apply)
          + azure_active_directory_id = (known after apply)
          + azure_application_id      = (known after apply)
          + azure_client_secret       = (known after apply)
          + azure_subscription_id     = (known after apply)
          + is_aws_account_trusted    = (known after apply)
          + site_id                   = "site1"
          + vendor                    = (known after apply)
        }

      + user_associations {
          + user_id = (known after apply)
        }
    }

Plan: 2 to add, 0 to change, 0 to destroy.