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main.tf
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main.tf
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/**
* Copyright 2017 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
locals {
address = var.create_address ? join("", google_compute_global_address.default.*.address) : var.address
url_map = var.create_url_map ? join("", google_compute_url_map.default.*.self_link) : var.url_map
}
resource "google_compute_global_forwarding_rule" "http" {
project = var.project
count = var.http_forward ? 1 : 0
name = var.name
target = google_compute_target_http_proxy.default[0].self_link
ip_address = local.address
port_range = "80"
}
resource "google_compute_global_forwarding_rule" "https" {
project = var.project
count = var.ssl ? 1 : 0
name = "${var.name}-https"
target = google_compute_target_https_proxy.default[0].self_link
ip_address = local.address
port_range = "443"
}
resource "google_compute_global_address" "default" {
count = var.create_address ? 1 : 0
project = var.project
name = "${var.name}-address"
ip_version = var.ip_version
}
# HTTP proxy when http forwarding is true
resource "google_compute_target_http_proxy" "default" {
project = var.project
count = var.http_forward ? 1 : 0
name = "${var.name}-http-proxy"
url_map = local.url_map
}
# HTTPS proxy when ssl is true
resource "google_compute_target_https_proxy" "default" {
project = var.project
count = var.ssl ? 1 : 0
name = "${var.name}-https-proxy"
url_map = local.url_map
ssl_certificates = compact(concat(var.ssl_certificates, google_compute_ssl_certificate.default.*.self_link, ), )
ssl_policy = var.ssl_policy
quic_override = var.quic ? "ENABLE" : null
}
resource "google_compute_ssl_certificate" "default" {
project = var.project
count = var.ssl && ! var.use_ssl_certificates ? 1 : 0
name_prefix = "${var.name}-certificate-"
private_key = var.private_key
certificate = var.certificate
lifecycle {
create_before_destroy = true
}
}
resource "google_compute_url_map" "default" {
project = var.project
count = var.create_url_map ? 1 : 0
name = "${var.name}-url-map"
default_service = google_compute_backend_service.default[keys(var.backends)[0]].self_link
}
resource "google_compute_backend_service" "default" {
provider = google-beta
for_each = var.backends
project = var.project
name = "${var.name}-backend-${each.key}"
port_name = each.value.port_name
protocol = each.value.protocol
timeout_sec = lookup(each.value, "timeout_sec", null)
description = lookup(each.value, "description", null)
connection_draining_timeout_sec = lookup(each.value, "connection_draining_timeout_sec", null)
enable_cdn = lookup(each.value, "enable_cdn", false)
security_policy = var.security_policy
health_checks = [google_compute_health_check.default[each.key].self_link]
session_affinity = lookup(each.value, "session_affinity", null)
affinity_cookie_ttl_sec = lookup(each.value, "affinity_cookie_ttl_sec", null)
dynamic "backend" {
for_each = toset(each.value["groups"])
content {
balancing_mode = lookup(backend.value, "balancing_mode")
capacity_scaler = lookup(backend.value, "capacity_scaler")
description = lookup(backend.value, "description")
group = lookup(backend.value, "group")
max_connections = lookup(backend.value, "max_connections")
max_connections_per_instance = lookup(backend.value, "max_connections_per_instance")
max_connections_per_endpoint = lookup(backend.value, "max_connections_per_endpoint")
max_rate = lookup(backend.value, "max_rate")
max_rate_per_instance = lookup(backend.value, "max_rate_per_instance")
max_rate_per_endpoint = lookup(backend.value, "max_rate_per_endpoint")
max_utilization = lookup(backend.value, "max_utilization")
}
}
log_config {
enable = lookup(lookup(each.value, "log_config", {}), "enable", true)
sample_rate = lookup(lookup(each.value, "log_config", {}), "sample_rate", "1.0")
}
depends_on = [google_compute_health_check.default]
}
resource "google_compute_health_check" "default" {
provider = google-beta
for_each = var.backends
project = var.project
name = "${var.name}-hc-${each.key}"
check_interval_sec = lookup(each.value["health_check"], "check_interval_sec", 5)
timeout_sec = lookup(each.value["health_check"], "timeout_sec", 5)
healthy_threshold = lookup(each.value["health_check"], "healthy_threshold", 2)
unhealthy_threshold = lookup(each.value["health_check"], "unhealthy_threshold", 2)
log_config {
enable = lookup(each.value["health_check"], "logging", false)
}
dynamic "http_health_check" {
for_each = each.value["protocol"] == "HTTP" ? [
{
host = lookup(each.value["health_check"], "host", null)
request_path = lookup(each.value["health_check"], "request_path", null)
port = lookup(each.value["health_check"], "port", null)
}
] : []
content {
host = lookup(http_health_check.value, "host", null)
request_path = lookup(http_health_check.value, "request_path", null)
port = lookup(http_health_check.value, "port", null)
}
}
dynamic "https_health_check" {
for_each = each.value["protocol"] == "HTTPS" ? [
{
host = lookup(each.value["health_check"], "host", null)
request_path = lookup(each.value["health_check"], "request_path", null)
port = lookup(each.value["health_check"], "port", null)
}
] : []
content {
host = lookup(https_health_check.value, "host", null)
request_path = lookup(https_health_check.value, "request_path", null)
port = lookup(https_health_check.value, "port", null)
}
}
dynamic "http2_health_check" {
for_each = each.value["protocol"] == "HTTP2" ? [
{
host = lookup(each.value["health_check"], "host", null)
request_path = lookup(each.value["health_check"], "request_path", null)
port = lookup(each.value["health_check"], "port", null)
}
] : []
content {
host = lookup(http2_health_check.value, "host", null)
request_path = lookup(http2_health_check.value, "request_path", null)
port = lookup(http2_health_check.value, "port", null)
}
}
}
resource "google_compute_firewall" "default-hc" {
count = length(var.firewall_networks)
project = length(var.firewall_networks) == 1 && var.firewall_projects[0] == "default" ? var.project : var.firewall_projects[count.index]
name = "${var.name}-hc-${count.index}"
network = var.firewall_networks[count.index]
source_ranges = [
"130.211.0.0/22",
"35.191.0.0/16"
]
target_tags = length(var.target_tags) > 0 ? var.target_tags : null
target_service_accounts = length(var.target_service_accounts) > 0 ? var.target_service_accounts : null
dynamic "allow" {
for_each = var.backends
content {
protocol = "tcp"
ports = [allow.value.port]
}
}
}