If statement in terraform, using 2 different code blocks - if-statement

Question

I have this codeblock
launchpad_tmpl = {
apiVersion = "<Link for the API>"
kind = "mke"
spec = {
mke = {
adminUsername = "admin"
adminPassword = var.admin_password
installFlags : [
"--default-node-orchestrator=kubernetes",
"--san=${module.masters.lb_dns_name}",
]
}
hosts = concat(local.managers, local.msrs, local.workers, local.windows_workers)
}
}
}
And I have another codeblock
launchpad_tmpl = {
apiVersion = "<Some link for the API>"
kind = "mke"
spec = {
mke = {
adminUsername = "admin"
adminPassword = var.admin_password
installFlags : [
"--default-node-orchestrator=kubernetes",
"--san=${module.masters.lb_dns_name}",
]
}
msr = {
...some_code
}
hosts = concat(local.managers, local.msrs, local.workers, local.windows_workers)
}
}
}
I want to tell terraform something like
IF msr_count >= 1 - Use second codeblock to run
ELSE use the first one...
Is it possible in Terraform Or I will need to make a wrapper somewhere?
Thanks in Advance.
UPDATE:::
Error: Inconsistent conditional result types
on main.tf line 162, in output "mke_cluster":
162: value = yamlencode(var.msr_count > 0 ? local.msr_launchpad_tmpl : local.mke_launchpad_tmpl)
|----------------
| local.mke_launchpad_tmpl is object with 3 attributes
| local.msr_launchpad_tmpl is object with 3 attributes
| var.msr_count is 1
The true and false result expressions must have consistent types. The given
expressions are object and object, respectively.
This is the output when it placed like this:
mke_launchpad_tmpl = {
apiVersion = "API"
kind = "mke"
spec = {
mke = {
adminUsername = "admin"
adminPassword = var.admin_password
installFlags : [
"--default-node-orchestrator=kubernetes",
"--san=${module.masters.lb_dns_name}",
]
}
hosts = concat(local.managers, local.msrs, local.workers, local.windows_workers)
}
}
msr_launchpad_tmpl = {
apiVersion = "API"
kind = "mke+msr"
spec = {
mke = {
adminUsername = "admin"
adminPassword = var.admin_password
installFlags : [
"--default-node-orchestrator=kubernetes",
"--san=${module.masters.lb_dns_name}",
]
}
msr = {
installFlags : [
"--ucp-insecure-tls",
"--dtr-external-url ${module.msrs.lb_dns_name}",
]
}
hosts = concat(local.managers, local.msrs, local.workers, local.windows_workers)
}
}
launchpad_tmpl = var.msr_count > 0 ? local.msr_launchpad_tmpl : local.mke_launchpad_tmpl
}
output "mke_cluster" {
value = yamlencode(local.launchpad_tmpl)
}

Answer 1

You could use conditional expression. Also for simplicity, you can create the two alternatives as locals, which will simplify the expression.
For example:
locals {
mke_launchpad_tmpl = {
apiVersion = "API"
kind = "mke"
spec = {
mke = {
adminUsername = "admin"
adminPassword = var.admin_password
installFlags : [
"--default-node-orchestrator=kubernetes",
"--san=${module.masters.lb_dns_name}",
]
}
msr = {}
hosts = concat(local.managers, local.msrs, local.workers, local.windows_workers)
}
}
msr_launchpad_tmpl = {
apiVersion = "API"
kind = "mke+msr"
spec = {
mke = {
adminUsername = "admin"
adminPassword = var.admin_password
installFlags : [
"--default-node-orchestrator=kubernetes",
"--san=${module.masters.lb_dns_name}",
]
}
msr = {
installFlags : [
"--ucp-insecure-tls",
"--dtr-external-url ${module.msrs.lb_dns_name}",
]
}
hosts = concat(local.managers, local.msrs, local.workers, local.windows_workers)
}
}
}
Then, in your resource:
launchpad_tmpl = var.msr_count > -1 ? local.second_launchpad_tmpl : local.first_launchpad_tmpl