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feat(net-lb-app-ext-regional): add strong session affinity cookie support #96

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feat(net-lb-app-ext-regional): add strong session affinity cookie support #96

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23 changes: 23 additions & 0 deletions modules/net-lb-app-ext-regional/backend-service.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -193,6 +193,29 @@ resource "google_compute_region_backend_service" "default" {
}
}

dynamic "strong_session_affinity_cookie" {
for_each = (
each.value.strong_session_affinity_cookie == null
? []
: [each.value.strong_session_affinity_cookie]
)
content {
name = strong_session_affinity_cookie.value.name
path = strong_session_affinity_cookie.value.path
dynamic "ttl" {
for_each = (
strong_session_affinity_cookie.value.ttl == null
? []
: [strong_session_affinity_cookie.value.ttl]
)
content {
seconds = ttl.value.seconds
nanos = ttl.value.nanos
}
}
}
}

dynamic "iap" {
for_each = each.value.iap_config == null ? [] : [each.value.iap_config]
content {
Expand Down
23 changes: 21 additions & 2 deletions modules/net-lb-app-ext-regional/variables-backend-service.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,15 @@ variable "backend_service_configs" {
protocol = optional(string)
security_policy = optional(string)
session_affinity = optional(string)
timeout_sec = optional(number)
strong_session_affinity_cookie = optional(object({
name = optional(string)
path = optional(string, "/")
ttl = optional(object({
seconds = number
nanos = optional(number)
}))
}))
timeout_sec = optional(number)
backends = list(object({
# group renamed to backend
backend = string
Expand Down Expand Up @@ -125,13 +133,24 @@ variable "backend_service_configs" {
for backend_service in values(var.backend_service_configs) : contains(
[
"NONE", "CLIENT_IP", "CLIENT_IP_NO_DESTINATION",
"CLIENT_IP_PORT_PROTO", "CLIENT_IP_PROTO"
"CLIENT_IP_PORT_PROTO", "CLIENT_IP_PROTO",
"GENERATED_COOKIE", "HTTP_COOKIE", "HEADER_FIELD",
"STRONG_COOKIE_AFFINITY"
],
coalesce(backend_service.session_affinity, "NONE")
)
])
error_message = "Invalid session affinity value."
}
validation {
condition = alltrue([
for backend_service in values(var.backend_service_configs) : (
coalesce(backend_service.session_affinity, "NONE") != "STRONG_COOKIE_AFFINITY"
|| backend_service.strong_session_affinity_cookie != null
)
])
error_message = "strong_session_affinity_cookie is required when session_affinity is STRONG_COOKIE_AFFINITY."
}
validation {
condition = alltrue(flatten([
for backend_service in values(var.backend_service_configs) : [
Expand Down