Get matching element

Terraform
1

Hi - This is my remote state file output. How can I find value matching the string ‘APPGATEWAYS’. Any help is appreciated.

   "vnet_subnet_ids": {
      "value": [
        "/subscriptions/redacted/resourceGroups/redacted/providers/Microsoft.Network/virtualNetworks/sample-vnet-1/subnets/APPGATEWAYS",
     "/subscriptions/redacted/resourceGroups/redacted/providers/Microsoft.Network/virtualNetworks/sample-vnet-2/subnets/SUB-2"
      ],
      "type": [
        "tuple",
        [
          "string",
          "string",

I tried to use lookup but getting the following error
Invalid value for "inputMap" parameter: lookup() requires a map as the first argument

2

Hi @KalyanSista,

With the information you shared I can’t give a complete example, but I think you could get the result you are looking for by using a for expression with an if clause for filtering:

[
  for v in data.terraform_remote_state.example.vnet_subnet_ids : v
  if split("/", v)[10] == "APPGATEWAYS"
]

Alternatively, you could transform the list into a map and then access it by key:

locals {
  subnet_ids = {
    for v in data.terraform_remote_state.example.vnet_subnet_ids :
    split("/", v)[10] => v
  }
}

The above should produce a map like this:

{
  "APPGATEWAYS": "/subscriptions/redacted/resourceGroups/redacted/providers/Microsoft.Network/virtualNetworks/sample-vnet-1/subnets/APPGATEWAYS",
  "SUB-2": "/subscriptions/redacted/resourceGroups/redacted/providers/Microsoft.Network/virtualNetworks/sample-vnet-2/subnets/SUB-2"
}

…so you could then write local.subnet_ids["APPGATEWAYS"] elsewhere in your module to find the full id string.