Add route tables to subnets (#7)

* Reset to master upstream and add route tables associations

* Fix fmt

* Add example

README.md

@@ -88,6 +88,53 @@ resource "azurerm_network_security_group" "ssh" {
 }
 ```
 
+## Example adding a route table
+
+```hcl
+provider "azurerm" {
+  features {}
+}
+
+resource "azurerm_resource_group" "example" {
+  name     = "my-resources"
+  location = "West Europe"
+}
+
+module "vnet" {
+  source              = "Azure/vnet/azurerm"
+  resource_group_name = azurerm_resource_group.example.name
+  address_space       = ["10.0.0.0/16"]
+  subnet_prefixes     = ["10.0.1.0/24", "10.0.2.0/24", "10.0.3.0/24"]
+  subnet_names        = ["subnet1", "subnet2", "subnet3"]
+
+  route_table_ids = {
+    subnet1 = azurerm_route_table.example.id 
+    subnet2 = azurerm_route_table.example.id
+    subnet3 = azurerm_roiute_table.example.id
+  }
+
+
+  tags = {
+    environment = "dev"
+    costcenter  = "it"
+  }
+}
+
+resource "azurerm_route_table" "example" {
+  location            = azurerm_resource_group.example.location
+  name                = "MyRouteTable"
+  resource_group_name = azurerm_resource_group.example.name
+}
+
+resource "azurerm_route" "example" {
+  name                = "acceptanceTestRoute1"
+  resource_group_name = azurerm_resource_group.example.name
+  route_table_name    = azurerm_route_table.example.name
+  address_prefix      = "10.1.0.0/16"
+  next_hop_type       = "vnetlocal"
+}
+
+```
 ## Test
 
 ### Configurations

main.tf

@@ -33,4 +33,10 @@ resource "azurerm_subnet_network_security_group_association" "vnet" {
   for_each                  = var.nsg_ids
   subnet_id                 = data.azurerm_subnet.import[each.key].id
   network_security_group_id = each.value
+}
+
+resource "azurerm_subnet_route_table_association" "vnet" {
+  for_each       = var.route_tables_ids
+  route_table_id = each.value
+  subnet_id      = data.azurerm_subnet.import[each.key].id
 }

test/fixture/main.tf

@@ -17,6 +17,12 @@ resource "azurerm_network_security_group" "nsg1" {
   location            = azurerm_resource_group.test.location
 }
 
+resource "azurerm_route_table" "rt1" {
+  location            = azurerm_resource_group.test.location
+  name                = "test-${random_id.rg_name.hex}-rt"
+  resource_group_name = azurerm_resource_group.test.name
+}
+
 module "vnet" {
   source              = "../../"
   resource_group_name = azurerm_resource_group.test.name
@@ -28,6 +34,10 @@ module "vnet" {
     subnet1 = azurerm_network_security_group.nsg1.id
   }
 
+  route_tables_ids = {
+    subnet1 = azurerm_route_table.rt1.id
+  }
+
   tags = {
     environment = "dev"
     costcenter  = "it"

variables.tf

@@ -37,6 +37,12 @@ variable "nsg_ids" {
   }
 }
 
+variable "route_tables_ids" {
+  description = "A map of subnet name to Route table ids"
+  type        = map(string)
+  default     = {}
+}
+
 variable "tags" {
   description = "The tags to associate with your network and subnets."
   type        = map(string)