From 3f0eaa242d742569652be47b6100bc21def480b7 Mon Sep 17 00:00:00 2001
From: MichaelYefet1 <101189972+MichaelYefet1@users.noreply.github.com>
Date: Mon, 28 Oct 2024 15:07:24 +0200
Subject: [PATCH] =?UTF-8?q?PM-9999:=20added=20option=20to=20ignore=20route?=
 =?UTF-8?q?=20attribute=20in=20the=20route=5Ftable=20ob=E2=80=A6=20(#4)?=
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* PM-9999: added option to ignore route attribute in the route_table object
---
 variables.tf                    |  1 +
 vpc/subnet_group/output.tf      |  2 +-
 vpc/subnet_group/route_table.tf | 17 ++++++++++++++++-
 3 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/variables.tf b/variables.tf
index 746a345..5d99b0a 100644
--- a/variables.tf
+++ b/variables.tf
@@ -10,6 +10,7 @@ variable "vpc_group" { type = object({
                 offset = number
                 assign_public_ips = bool
                 extra_subnet_tags = optional(map(string), {})
+                ignore_routes_changes = optional(bool, false)
             }))
             public_igw_subnet_groups = list(string)
             nacl_subnet_groups = optional(list(string), [])
diff --git a/vpc/subnet_group/output.tf b/vpc/subnet_group/output.tf
index fa82d93..071cc22 100644
--- a/vpc/subnet_group/output.tf
+++ b/vpc/subnet_group/output.tf
@@ -1,6 +1,6 @@
 output "subnet_group" {
   value = {
     subnet_ids = aws_subnet.subnet.*.id
-    route_table_id = aws_route_table.route_table.id
+    route_table_id = var.subnet_group_properties["ignore_routes_changes"] ? aws_route_table.route_table_ignore_routes[0].id : aws_route_table.route_table[0].id
   }
 }
diff --git a/vpc/subnet_group/route_table.tf b/vpc/subnet_group/route_table.tf
index b96c721..1fa82ef 100644
--- a/vpc/subnet_group/route_table.tf
+++ b/vpc/subnet_group/route_table.tf
@@ -1,11 +1,26 @@
 resource "aws_route_table" "route_table" {
   vpc_id = var.vpc_id
   tags = tomap({"Name" = "${var.subnet_group_properties["subnet_group_name"]}-route_table.${var.vpc_name}"})
+
+  count = var.subnet_group_properties["ignore_routes_changes"] ? 0 : 1
+}
+
+resource "aws_route_table" "route_table_ignore_routes" {
+  vpc_id = var.vpc_id
+  tags = tomap({"Name" = "${var.subnet_group_properties["subnet_group_name"]}-route_table.${var.vpc_name}"})
+
+  lifecycle {
+    ignore_changes = [
+      route
+    ]
+  }
+
+  count = var.subnet_group_properties["ignore_routes_changes"] ? 1 : 0
 }
 
 resource "aws_route_table_association" "route_table_assoc" {
   subnet_id      = element(aws_subnet.subnet.*.id, count.index)
-  route_table_id = element(aws_route_table.route_table.*.id, count.index)
+  route_table_id = var.subnet_group_properties["ignore_routes_changes"] ? aws_route_table.route_table_ignore_routes[0].id : aws_route_table.route_table[0].id
 
   count = length(var.subnet_group_properties["availability_zones"])
 }