139 lines
4.9 KiB
HCL
139 lines
4.9 KiB
HCL
/**
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* Copyright 2023 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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locals {
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ipsec_enabled = var.vpn_gateways_ip_range == null ? false : true
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router = (
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var.router_config.create
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? local.ipsec_enabled ? try(google_compute_router.encrypted[0].name, null) : try(google_compute_router.unencrypted[0].name, null)
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: var.router_config.name
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)
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}
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resource "google_compute_address" "default" {
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count = local.ipsec_enabled ? 1 : 0
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project = var.project_id
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network = var.network
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region = var.region
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name = "pool-${var.name}"
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address_type = "INTERNAL"
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purpose = "IPSEC_INTERCONNECT"
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address = split("/", var.vpn_gateways_ip_range)[0]
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prefix_length = split("/", var.vpn_gateways_ip_range)[1]
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}
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resource "google_compute_interconnect_attachment" "default" {
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project = var.project_id
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region = var.region
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router = local.router
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name = var.name
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description = var.description
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interconnect = var.interconnect
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bandwidth = var.bandwidth
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mtu = local.ipsec_enabled ? null : var.mtu
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candidate_subnets = [var.bgp_range]
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vlan_tag8021q = var.vlan_tag
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admin_enabled = var.admin_enabled
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encryption = local.ipsec_enabled ? "IPSEC" : null
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type = "DEDICATED"
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ipsec_internal_addresses = local.ipsec_enabled ? [google_compute_address.default[0].self_link] : null
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}
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resource "google_compute_router" "encrypted" {
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count = var.router_config.create && local.ipsec_enabled ? 1 : 0
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name = "${var.name}-underlay"
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network = var.network
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project = var.project_id
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region = var.region
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encrypted_interconnect_router = true
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bgp {
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asn = var.router_config.asn
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}
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}
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resource "google_compute_router" "unencrypted" {
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count = var.router_config.create && !local.ipsec_enabled ? 1 : 0
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name = coalesce(var.router_config.name, "underlay-${var.name}")
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project = var.project_id
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region = var.region
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network = var.network
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bgp {
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advertise_mode = (
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var.router_config.custom_advertise != null
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? "CUSTOM"
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: "DEFAULT"
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)
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advertised_groups = (
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try(var.router_config.custom_advertise.all_subnets, false)
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? ["ALL_SUBNETS"]
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: []
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)
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dynamic "advertised_ip_ranges" {
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for_each = try(var.router_config.custom_advertise.ip_ranges, {})
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iterator = range
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content {
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range = range.key
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description = range.value
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}
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}
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keepalive_interval = try(var.router_config.keepalive, null)
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asn = var.router_config.asn
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}
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}
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resource "google_compute_router_interface" "default" {
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project = var.project_id
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region = var.region
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name = "${var.name}-intf"
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router = local.router
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ip_range = "${cidrhost(var.bgp_range, 1)}/${split("/", var.bgp_range)[1]}"
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interconnect_attachment = google_compute_interconnect_attachment.default.name
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}
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resource "google_compute_router_peer" "default" {
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name = "${var.name}-peer"
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project = var.project_id
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router = local.router
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region = var.region
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peer_ip_address = cidrhost(var.bgp_range, 2)
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peer_asn = var.peer_asn
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interface = "${var.name}-intf"
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advertised_route_priority = 100
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advertise_mode = "CUSTOM"
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dynamic "advertised_ip_ranges" {
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for_each = var.ipsec_gateway_ip_ranges
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content {
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description = advertised_ip_ranges.key
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range = advertised_ip_ranges.value
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}
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}
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dynamic "bfd" {
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for_each = var.router_config.bfd != null ? toset([var.router_config.bfd]) : []
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content {
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session_initialization_mode = bfd.session_initialization_mode
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min_receive_interval = bfd.min_receive_interval
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min_transmit_interval = bfd.min_transmit_interval
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multiplier = bfd.multiplier
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}
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}
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depends_on = [
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google_compute_router_interface.default
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]
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}
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