Support for setting Azure Front Door cache duration

[oliwer]

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Description

Using the Azure console or CLI it is possible to set the cache duration of a forwarding rule. But there is no such option in the azurerm provider.

• azurerm_frontdoor in the forwarding_configuration block

Potential Terraform Configuration

resource "azurerm_frontdoor" "example" {
  name                                         = "example-FrontDoor"
  location                                     = "EastUS2"
  resource_group_name                          = azurerm_resource_group.example.name
  enforce_backend_pools_certificate_name_check = false

  routing_rule {
    name               = "exampleRoutingRule1"
    accepted_protocols = ["Http", "Https"]
    patterns_to_match  = ["/*"]
    frontend_endpoints = ["exampleFrontendEndpoint1"]
    forwarding_configuration {
      forwarding_protocol = "MatchRequest"
      backend_pool_name   = "exampleBackendBing"
      cache_enabled = true
      cache_use_dynamic_compression = true
      # Missing option :(
      # cache_duration = "5h"
    }
  }

  ...
}

References

• https://docs.microsoft.com/en-us/cli/azure/afd/rule/action?view=azure-cli-latest#az_afd_rule_action_add
• https://docs.microsoft.com/en-us/azure/frontdoor/front-door-caching

[sebader]

will be closed by #12831

[oliwer]

I have not tested since I do not work with Azure anymore, but I guess this issue can be closed since #12831 was merged.