terraform: Terraform module for AWS (#2503)

terraform/infrastructure/gcp/modules/loadbalancer/main.tf

@@ -0,0 +1,66 @@
+terraform {
+  required_providers {
+    google = {
+      source  = "hashicorp/google"
+      version = "4.83.0"
+    }
+  }
+}
+
+locals {
+  name = "${var.name}-${var.backend_port_name}"
+}
+
+resource "google_compute_health_check" "health" {
+  name               = local.name
+  check_interval_sec = 1
+  timeout_sec        = 1
+
+  dynamic "tcp_health_check" {
+    for_each = var.health_check == "TCP" ? [1] : []
+    content {
+      port = var.port
+    }
+  }
+
+  dynamic "https_health_check" {
+    for_each = var.health_check == "HTTPS" ? [1] : []
+    content {
+      host         = ""
+      port         = var.port
+      request_path = "/readyz"
+    }
+  }
+}
+
+resource "google_compute_backend_service" "backend" {
+  name                  = local.name
+  protocol              = "TCP"
+  load_balancing_scheme = "EXTERNAL"
+  health_checks         = [google_compute_health_check.health.self_link]
+  port_name             = var.backend_port_name
+  timeout_sec           = 240
+
+  dynamic "backend" {
+    for_each = var.backend_instance_groups
+    content {
+      group          = backend.value
+      balancing_mode = "UTILIZATION"
+    }
+  }
+}
+
+resource "google_compute_target_tcp_proxy" "proxy" {
+  name            = local.name
+  backend_service = google_compute_backend_service.backend.self_link
+}
+
+resource "google_compute_global_forwarding_rule" "forwarding" {
+  name                  = local.name
+  ip_address            = var.ip_address
+  ip_protocol           = "TCP"
+  load_balancing_scheme = "EXTERNAL"
+  port_range            = var.port
+  target                = google_compute_target_tcp_proxy.proxy.self_link
+  labels                = var.frontend_labels
+}