From cbbf018df7b92604d777376cbe820d8dd4b328f1 Mon Sep 17 00:00:00 2001
From: Chris Gianelloni <wolf31o2@blinklabs.io>
Date: Fri, 21 Jun 2024 11:02:55 -0400
Subject: [PATCH] feat: gcp cloud provider

Support GCP as a cloud provider. This depends on
demeter-run/ext-cardano-node#52 or a `gp3` storage class in the cluster.
To ensure backwards compatibility, the default is configured for AWS.

Signed-off-by: Chris Gianelloni <wolf31o2@blinklabs.io>
---
 bootstrap/main.tf          | 12 +++++-----
 bootstrap/proxy/main.tf    |  4 ++++
 bootstrap/proxy/service.tf | 35 ++++++++++++++++++++++++++++-
 bootstrap/relay/main.tf    | 46 +++++++++++++++++++++++++++++++++++++-
 bootstrap/variables.tf     |  5 +++++
 5 files changed, 95 insertions(+), 7 deletions(-)

diff --git a/bootstrap/main.tf b/bootstrap/main.tf
index 99ed822..33e53eb 100644
--- a/bootstrap/main.tf
+++ b/bootstrap/main.tf
@@ -29,6 +29,7 @@ module "node_v1_proxy_blue" {
   resources           = var.proxy_resources
   instances_namespace = var.proxy_blue_instances_namespace
   healthcheck_port    = var.proxy_blue_healthcheck_port
+  cloud_provider      = var.cloud_provider
   environment         = "blue"
   name                = "proxy-blue"
 }
@@ -44,6 +45,7 @@ module "node_v1_proxy_green" {
   resources           = var.proxy_resources
   instances_namespace = var.proxy_green_instances_namespace
   healthcheck_port    = var.proxy_green_healthcheck_port
+  cloud_provider      = var.cloud_provider
   environment         = "green"
   name                = "proxy-green"
 }
@@ -82,7 +84,6 @@ module "instances" {
   is_custom        = coalesce(each.value.is_custom, false)
 }
 
-
 module "custom_configs" {
   depends_on = [kubernetes_namespace.namespace]
   source     = "./configs"
@@ -108,7 +109,8 @@ module "services" {
 }
 
 module "node_relay" {
-  depends_on = [kubernetes_namespace.namespace]
-  source     = "./relay"
-  namespace  = var.namespace
-}
\ No newline at end of file
+  depends_on     = [kubernetes_namespace.namespace]
+  source         = "./relay"
+  namespace      = var.namespace
+  cloud_provider = var.cloud_provider
+}
diff --git a/bootstrap/proxy/main.tf b/bootstrap/proxy/main.tf
index ab37c9d..77dd50d 100644
--- a/bootstrap/proxy/main.tf
+++ b/bootstrap/proxy/main.tf
@@ -85,3 +85,7 @@ variable "dns_zone" {
 variable "healthcheck_port" {
   type = number
 }
+
+variable "cloud_provider" {
+  type = string
+}
diff --git a/bootstrap/proxy/service.tf b/bootstrap/proxy/service.tf
index 9d3e8dc..b36f76c 100644
--- a/bootstrap/proxy/service.tf
+++ b/bootstrap/proxy/service.tf
@@ -1,4 +1,5 @@
-resource "kubernetes_service_v1" "proxy_service" {
+resource "kubernetes_service_v1" "proxy_service_aws" {
+  for_each = toset([for n in toset(["loadbalancer"]) : n if var.cloud_provider == "aws"])
   metadata {
     name      = local.name
     namespace = var.namespace
@@ -33,3 +34,35 @@ resource "kubernetes_service_v1" "proxy_service" {
     type = "LoadBalancer"
   }
 }
+
+resource "kubernetes_service_v1" "proxy_service_gcp" {
+  for_each = toset([for n in toset(["loadbalancer"]) : n if var.cloud_provider == "gcp"])
+  metadata {
+    name      = local.name
+    namespace = var.namespace
+    annotations = {
+      "cloud.google.com/l4-rbs" : "enabled"
+    }
+  }
+
+  spec {
+    external_traffic_policy = "Local"
+    selector                = local.proxy_labels
+
+    port {
+      name        = "proxy"
+      port        = 9443
+      target_port = local.proxy_port
+      protocol    = "TCP"
+    }
+
+    port {
+      name        = "health"
+      port        = 80
+      target_port = local.prometheus_port
+      protocol    = "TCP"
+    }
+
+    type = "LoadBalancer"
+  }
+}
diff --git a/bootstrap/relay/main.tf b/bootstrap/relay/main.tf
index 23bf9c0..062b684 100644
--- a/bootstrap/relay/main.tf
+++ b/bootstrap/relay/main.tf
@@ -2,7 +2,13 @@ variable "namespace" {
   description = "the namespace where the resources will be created"
 }
 
-resource "kubernetes_service_v1" "node-relay-n2n" {
+variable "cloud_provider" {
+  type    = string
+  default = "aws"
+}
+
+resource "kubernetes_service_v1" "node-relay-n2n-aws" {
+  for_each = toset([for n in toset(["loadbalancer"]) : n if var.cloud_provider == "aws"])
   metadata {
     name      = "node-relay-n2n"
     namespace = var.namespace
@@ -42,9 +48,47 @@ resource "kubernetes_service_v1" "node-relay-n2n" {
       port        = 3002
       target_port = "n2n-preview"
     }
+  }
+}
 
+resource "kubernetes_service_v1" "node-relay-n2n-gcp" {
+  for_each = toset([for n in toset(["loadbalancer"]) : n if var.cloud_provider == "gcp"])
+  metadata {
+    name      = "node-relay-n2n"
+    namespace = var.namespace
+    annotations = {
+      "cloud.google.com/l4-rbs" : "enabled"
+    }
+  }
 
+  spec {
+    type                    = "LoadBalancer"
+    external_traffic_policy = "Local"
 
+    selector = {
+      "role"    = "node"
+      "release" = "stable"
+    }
 
+    port {
+      name        = "mainnet"
+      protocol    = "TCP"
+      port        = 3000
+      target_port = "n2n-mainnet"
+    }
+
+    port {
+      name        = "preprod"
+      protocol    = "TCP"
+      port        = 3001
+      target_port = "n2n-preprod"
+    }
+
+    port {
+      name        = "preview"
+      protocol    = "TCP"
+      port        = 3002
+      target_port = "n2n-preview"
+    }
   }
 }
diff --git a/bootstrap/variables.tf b/bootstrap/variables.tf
index 0acdf2f..5feb573 100644
--- a/bootstrap/variables.tf
+++ b/bootstrap/variables.tf
@@ -1,3 +1,8 @@
+variable "cloud_provider" {
+  type    = string
+  default = "aws"
+}
+
 variable "namespace" {
   type = string
 }