Vinita Shah
Reputation: 129
Terraform create map/dict from TG route table and TG attachment vpns to reference in resource aws_ec2_transit_gateway_route_table_association
Adding a Python like psuedo code for explaining what I want to achieve via Terraform.
I have 6 transit gateway route tables, 10 transit gateway VPN attachments I need this for tansit gateway route table association and propagation
Trying to create a local "map/dict" that can be referenced in the resource function aws_ec2_transit_gateway_route_table_association The resource function needs transit_gateway_attachment_id and transit_gateway_route_table_id
tg_rt = [
{
"name" = "A"
"tg_rt_id" = "tgw-rtb-aa"
},
{
"name" = "B"
"tg_rt_id" = "tgw-rtb-bb"
},
{
"name" = "C"
"tg_rt_id" = "tgw-rtb-cc"
},
{
"name" = "D"
"tg_rt_id" = "tgw-rtb-dd"
},
{
"name" = "E"
"tg_rt_id" = "tgw-rtb-ee"
},
{
"name" = "F"
"tg_rt_id" = "tgw-rtb-ff"
},
]
tga_vpn = [
{
"name" = "1"
"tga_id" = "tgw-attach-11"
},
{
"name" = "2"
"tga_id" = "tgw-attach-22"
},
{
"name" = "3"
"tga_id" = "tgw-attach-33"
},
{
"name" = "4"
"tga_id" = "tgw-attach-44"
},
{
"name" = "5"
"tga_id" = "tgw-attach-55"
},
{
"name" = "6"
"tga_id" = "tgw-attach-66"
},
{
"name" = "7"
"tga_id" = "tgw-attach-77"
},
{
"name" = "8"
"tga_id" = "tgw-attach-88"
},
]
for tgw_rt in tgw_rts: # list of dicts with id and name
for tga_vpn in tga_vpns: # # list of dict with id and name
if tgw_rt.name == "PROD" and tga_vpn.name in [1, 2, 3, 4]:
rt_id = tgw_rt.id
vpn_attachment_id = tga_vpn.id
elif tgw_rt.name == "DEV" and tga_vpn.name in [5, 6, 7, 8]:
rt_id = tgw_rt.id
vpn_attachment_id = tga_vpn.id
elif tgw_rt.name == "STAGING" and tga_vpn.name in [9, 10, 11, 12]:
rt_id = tgw_rt.id
vpn_attachment_id = tga_vpn.id
resource "aws_ec2_transit_gateway_route_table_association" "TGW-RT-VPN-ASSOCIATION" {
for_each = {
for tg_vpn_attach, tg_vpn_attach_details in local.above_map : tg_vpn_attach => tg_vpn_attach_details
}
transit_gateway_route_table_id = each.rt_id # for reference
transit_gateway_attachment_id = each.vpn_attachment_id # for reference
}
Again I have deployed a TGW with half dozen route tables/routes with several VPC and VPN attachment types and looking to create the correct associations/propagations according to the logic format above.
Let me know if there are any questions and any help would be greatly appreciated.
Thank you!
Upvotes: 1
Views: 238
Answers (1)
Marcin
Reputation: 238557
There are no [9, 10, 11, 12] in your tga_vpn, so I will just focus on prod and dev.
You should be able to construct your data structure, assuming that I understand correctly your desired outcome, as follows:
variable "tg_rt" {
default = [
{
"name" = "A"
"tg_rt_id" = "tgw-rtb-aa"
},
{
"name" = "B"
"tg_rt_id" = "tgw-rtb-bb"
},
{
"name" = "C"
"tg_rt_id" = "tgw-rtb-cc"
},
{
"name" = "D"
"tg_rt_id" = "tgw-rtb-dd"
},
{
"name" = "E"
"tg_rt_id" = "tgw-rtb-ee"
},
{
"name" = "F"
"tg_rt_id" = "tgw-rtb-ff"
},
]
}
variable "tga_vpn" {
default = [
{
"name" = "1"
"tga_id" = "tgw-attach-11"
},
{
"name" = "2"
"tga_id" = "tgw-attach-22"
},
{
"name" = "3"
"tga_id" = "tgw-attach-33"
},
{
"name" = "4"
"tga_id" = "tgw-attach-44"
},
{
"name" = "5"
"tga_id" = "tgw-attach-55"
},
{
"name" = "6"
"tga_id" = "tgw-attach-66"
},
{
"name" = "7"
"tga_id" = "tgw-attach-77"
},
{
"name" = "8"
"tga_id" = "tgw-attach-88"
},
]
}
locals {
prod = merge(flatten([ for idx1, tgw_rt in var.tg_rt:
{
for idx2, tga_vpn in var.tga_vpn:
"${tgw_rt.tg_rt_id}-${ tga_vpn.tga_id}" =>
{ rt_id = tgw_rt.tg_rt_id
vpn_attachment_id = tga_vpn.tga_id
} if contains(["1", "2", "3", "4"], tga_vpn.name)
}
])...)
dev = merge(flatten([ for idx1, tgw_rt in var.tg_rt:
{
for idx2, tga_vpn in var.tga_vpn:
"${tgw_rt.tg_rt_id}-${ tga_vpn.tga_id}" =>
{ rt_id = tgw_rt.tg_rt_id
vpn_attachment_id = tga_vpn.tga_id
} if contains(["5", "6", "7", "8"], tga_vpn.name)
}
])...)
prod_dev_map = {
prod = local.prod
dev = local.dev
}
}
output "prod" {
value = local.prod_dev_map
}
This will result in prod_dev_map being:
{
"dev" = {
"tgw-rtb-aa-tgw-attach-55" = {
"rt_id" = "tgw-rtb-aa"
"vpn_attachment_id" = "tgw-attach-55"
}
"tgw-rtb-aa-tgw-attach-66" = {
"rt_id" = "tgw-rtb-aa"
"vpn_attachment_id" = "tgw-attach-66"
}
"tgw-rtb-aa-tgw-attach-77" = {
"rt_id" = "tgw-rtb-aa"
"vpn_attachment_id" = "tgw-attach-77"
}
"tgw-rtb-aa-tgw-attach-88" = {
"rt_id" = "tgw-rtb-aa"
"vpn_attachment_id" = "tgw-attach-88"
}
"tgw-rtb-bb-tgw-attach-55" = {
"rt_id" = "tgw-rtb-bb"
"vpn_attachment_id" = "tgw-attach-55"
}
"tgw-rtb-bb-tgw-attach-66" = {
"rt_id" = "tgw-rtb-bb"
"vpn_attachment_id" = "tgw-attach-66"
}
"tgw-rtb-bb-tgw-attach-77" = {
"rt_id" = "tgw-rtb-bb"
"vpn_attachment_id" = "tgw-attach-77"
}
"tgw-rtb-bb-tgw-attach-88" = {
"rt_id" = "tgw-rtb-bb"
"vpn_attachment_id" = "tgw-attach-88"
}
"tgw-rtb-cc-tgw-attach-55" = {
"rt_id" = "tgw-rtb-cc"
"vpn_attachment_id" = "tgw-attach-55"
}
"tgw-rtb-cc-tgw-attach-66" = {
"rt_id" = "tgw-rtb-cc"
"vpn_attachment_id" = "tgw-attach-66"
}
"tgw-rtb-cc-tgw-attach-77" = {
"rt_id" = "tgw-rtb-cc"
"vpn_attachment_id" = "tgw-attach-77"
}
"tgw-rtb-cc-tgw-attach-88" = {
"rt_id" = "tgw-rtb-cc"
"vpn_attachment_id" = "tgw-attach-88"
}
"tgw-rtb-dd-tgw-attach-55" = {
"rt_id" = "tgw-rtb-dd"
"vpn_attachment_id" = "tgw-attach-55"
}
"tgw-rtb-dd-tgw-attach-66" = {
"rt_id" = "tgw-rtb-dd"
"vpn_attachment_id" = "tgw-attach-66"
}
"tgw-rtb-dd-tgw-attach-77" = {
"rt_id" = "tgw-rtb-dd"
"vpn_attachment_id" = "tgw-attach-77"
}
"tgw-rtb-dd-tgw-attach-88" = {
"rt_id" = "tgw-rtb-dd"
"vpn_attachment_id" = "tgw-attach-88"
}
"tgw-rtb-ee-tgw-attach-55" = {
"rt_id" = "tgw-rtb-ee"
"vpn_attachment_id" = "tgw-attach-55"
}
"tgw-rtb-ee-tgw-attach-66" = {
"rt_id" = "tgw-rtb-ee"
"vpn_attachment_id" = "tgw-attach-66"
}
"tgw-rtb-ee-tgw-attach-77" = {
"rt_id" = "tgw-rtb-ee"
"vpn_attachment_id" = "tgw-attach-77"
}
"tgw-rtb-ee-tgw-attach-88" = {
"rt_id" = "tgw-rtb-ee"
"vpn_attachment_id" = "tgw-attach-88"
}
"tgw-rtb-ff-tgw-attach-55" = {
"rt_id" = "tgw-rtb-ff"
"vpn_attachment_id" = "tgw-attach-55"
}
"tgw-rtb-ff-tgw-attach-66" = {
"rt_id" = "tgw-rtb-ff"
"vpn_attachment_id" = "tgw-attach-66"
}
"tgw-rtb-ff-tgw-attach-77" = {
"rt_id" = "tgw-rtb-ff"
"vpn_attachment_id" = "tgw-attach-77"
}
"tgw-rtb-ff-tgw-attach-88" = {
"rt_id" = "tgw-rtb-ff"
"vpn_attachment_id" = "tgw-attach-88"
}
}
"prod" = {
"tgw-rtb-aa-tgw-attach-11" = {
"rt_id" = "tgw-rtb-aa"
"vpn_attachment_id" = "tgw-attach-11"
}
"tgw-rtb-aa-tgw-attach-22" = {
"rt_id" = "tgw-rtb-aa"
"vpn_attachment_id" = "tgw-attach-22"
}
"tgw-rtb-aa-tgw-attach-33" = {
"rt_id" = "tgw-rtb-aa"
"vpn_attachment_id" = "tgw-attach-33"
}
"tgw-rtb-aa-tgw-attach-44" = {
"rt_id" = "tgw-rtb-aa"
"vpn_attachment_id" = "tgw-attach-44"
}
"tgw-rtb-bb-tgw-attach-11" = {
"rt_id" = "tgw-rtb-bb"
"vpn_attachment_id" = "tgw-attach-11"
}
"tgw-rtb-bb-tgw-attach-22" = {
"rt_id" = "tgw-rtb-bb"
"vpn_attachment_id" = "tgw-attach-22"
}
"tgw-rtb-bb-tgw-attach-33" = {
"rt_id" = "tgw-rtb-bb"
"vpn_attachment_id" = "tgw-attach-33"
}
"tgw-rtb-bb-tgw-attach-44" = {
"rt_id" = "tgw-rtb-bb"
"vpn_attachment_id" = "tgw-attach-44"
}
"tgw-rtb-cc-tgw-attach-11" = {
"rt_id" = "tgw-rtb-cc"
"vpn_attachment_id" = "tgw-attach-11"
}
"tgw-rtb-cc-tgw-attach-22" = {
"rt_id" = "tgw-rtb-cc"
"vpn_attachment_id" = "tgw-attach-22"
}
"tgw-rtb-cc-tgw-attach-33" = {
"rt_id" = "tgw-rtb-cc"
"vpn_attachment_id" = "tgw-attach-33"
}
"tgw-rtb-cc-tgw-attach-44" = {
"rt_id" = "tgw-rtb-cc"
"vpn_attachment_id" = "tgw-attach-44"
}
"tgw-rtb-dd-tgw-attach-11" = {
"rt_id" = "tgw-rtb-dd"
"vpn_attachment_id" = "tgw-attach-11"
}
"tgw-rtb-dd-tgw-attach-22" = {
"rt_id" = "tgw-rtb-dd"
"vpn_attachment_id" = "tgw-attach-22"
}
"tgw-rtb-dd-tgw-attach-33" = {
"rt_id" = "tgw-rtb-dd"
"vpn_attachment_id" = "tgw-attach-33"
}
"tgw-rtb-dd-tgw-attach-44" = {
"rt_id" = "tgw-rtb-dd"
"vpn_attachment_id" = "tgw-attach-44"
}
"tgw-rtb-ee-tgw-attach-11" = {
"rt_id" = "tgw-rtb-ee"
"vpn_attachment_id" = "tgw-attach-11"
}
"tgw-rtb-ee-tgw-attach-22" = {
"rt_id" = "tgw-rtb-ee"
"vpn_attachment_id" = "tgw-attach-22"
}
"tgw-rtb-ee-tgw-attach-33" = {
"rt_id" = "tgw-rtb-ee"
"vpn_attachment_id" = "tgw-attach-33"
}
"tgw-rtb-ee-tgw-attach-44" = {
"rt_id" = "tgw-rtb-ee"
"vpn_attachment_id" = "tgw-attach-44"
}
"tgw-rtb-ff-tgw-attach-11" = {
"rt_id" = "tgw-rtb-ff"
"vpn_attachment_id" = "tgw-attach-11"
}
"tgw-rtb-ff-tgw-attach-22" = {
"rt_id" = "tgw-rtb-ff"
"vpn_attachment_id" = "tgw-attach-22"
}
"tgw-rtb-ff-tgw-attach-33" = {
"rt_id" = "tgw-rtb-ff"
"vpn_attachment_id" = "tgw-attach-33"
}
"tgw-rtb-ff-tgw-attach-44" = {
"rt_id" = "tgw-rtb-ff"
"vpn_attachment_id" = "tgw-attach-44"
}
}
}
Upvotes: 0
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