Example azure function in terraform

function.tf

resource "azurerm_storage_account" "myfunctionstorage" {
  name                     = "myfunctionstorage1234"
  resource_group_name      = "MyResourceGroup"
  location                 = "UK South"
  account_tier             = "Standard"
  account_replication_type = "LRS"
}

resource "azurerm_app_service_plan" "myfunctionplan" {
  name                = "myfunctionappserviceplan"
  location            = "UK South"
  resource_group_name = "MyResourceGroup"
  kind                = "FunctionApp"

  sku {
    tier = "Dynamic"
    size = "Y1"
  }
}

resource "azurerm_function_app" "myfunction" {
  name                      = "myfunction112244"
  location                  = "UK South"
  resource_group_name       = "MyResourceGroup"
  app_service_plan_id       = "${azurerm_app_service_plan.myfunctionplan.id}"
  storage_connection_string = "${azurerm_storage_account.myfunctionstorage.primary_connection_string}"
  version                   = "~2"

  app_settings {
    "Appsetting"           = "12345"
    "Appsetting"           = "${var.a_variable}"
    "DBConnectionString"   = "${azurerm_storage_account.mystorageaccount.primary_connection_string}"
  }
}