feat: add ngwaf (#2527)

JacobCoffee · web-flow · commit 1795b1f27dba · 2024-09-16T11:00:00.000-05:00
* feat: add ngwaf with successful tfplan

* docs: update to latest var name

* chore: apply formatting

* feat: make ngwaf bits enabled via var

* fix: use var fvor activation

* fix: fix invalid syntax

* fix: fix invalid syntax again

* chore: use service account

* chore: cleanup cruft

* fix: apply patch for dynamic dynamic things

* Update infra/cdn/README.md

* Update infra/cdn/README.md
diff --git a/infra/.terraform.lock.hcl b/infra/.terraform.lock.hcl
diff --git a/infra/cdn/README.md b/infra/cdn/README.md
@@ -29,5 +29,29 @@ N/A
 ## Requirements
 
 Tested on 
-- Tested on Terraform 1.8.5
-- Fastly provider 5.13.0
+- Tested on Terraform 1.9.5
+- Fastly provider 5.13.0
+
+# Fastly's NGWAF
+
+This module also conditionally can set up the Fastly Next-Gen Web Application Firewall (NGWAF) 
+for our Fastly services related to python.org / test.python.org. 
+
+## Usage
+
+```hcl
+module "fastly_production" {
+  source = "./cdn"
+
+  ...
+  activate_ngwaf_service = true
+  ...
+}
+```
+
+## Requirements
+
+Tested on
+- Terraform 1.9.5
+- Fastly provider 5.13.0
+- SigSci provider 3.3.0
diff --git a/infra/cdn/main.tf b/infra/cdn/main.tf
@@ -342,4 +342,73 @@ resource "fastly_service_vcl" "python_org" {
     response          = "Forbidden"
     status            = 403
   }
+
+  dynamic "dictionary" {
+    for_each = var.activate_ngwaf_service ? [1] : []
+    content {
+      name = var.edge_security_dictionary
+    }
+  }
+
+  dynamic "dynamicsnippet" {
+    for_each = var.activate_ngwaf_service ? [1] : []
+    content {
+      name     = "ngwaf_config_init"
+      type     = "init"
+      priority = 0
+    }
+  }
+
+  dynamic "dynamicsnippet" {
+    for_each = var.activate_ngwaf_service ? [1] : []
+    content {
+      name     = "ngwaf_config_miss"
+      type     = "miss"
+      priority = 9000
+    }
+  }
+
+  dynamic "dynamicsnippet" {
+    for_each = var.activate_ngwaf_service ? [1] : []
+    content {
+      name     = "ngwaf_config_pass"
+      type     = "pass"
+      priority = 9000
+    }
+  }
+
+  dynamic "dynamicsnippet" {
+    for_each = var.activate_ngwaf_service ? [1] : []
+    content {
+      name     = "ngwaf_config_deliver"
+      type     = "deliver"
+      priority = 9000
+    }
+  }
+
+  lifecycle {
+    ignore_changes = [
+      product_enablement,
+    ]
+  }
+}
+
+output "service_id" {
+  value       = fastly_service_vcl.python_org.id
+  description = "The ID of the Fastly service"
+}
+
+output "backend_address" {
+  value       = var.backend_address
+  description = "The backend address for the service."
+}
+
+output "service_name" {
+  value       = var.name
+  description = "The name of the Fastly service"
+}
+
+output "domain" {
+  value       = var.domain
+  description = "The domain of the Fastly service"
 }
diff --git a/infra/cdn/ngwaf.tf b/infra/cdn/ngwaf.tf
@@ -0,0 +1,49 @@
+resource "fastly_service_dictionary_items" "edge_security_dictionary_items" {
+  count         = var.activate_ngwaf_service ? 1 : 0
+  service_id    = fastly_service_vcl.python_org.id
+  dictionary_id = one([for d in fastly_service_vcl.python_org.dictionary : d.dictionary_id if d.name == var.edge_security_dictionary])
+  items = {
+    Enabled : "100"
+  }
+}
+
+resource "fastly_service_dynamic_snippet_content" "ngwaf_config_snippets" {
+  for_each        = var.activate_ngwaf_service ? toset(["init", "miss", "pass", "deliver"]) : []
+  service_id      = fastly_service_vcl.python_org.id
+  snippet_id      = one([for d in fastly_service_vcl.python_org.dynamicsnippet : d.snippet_id if d.name == "ngwaf_config_${each.key}"])
+  content         = "### Terraform managed ngwaf_config_${each.key}"
+  manage_snippets = false
+}
+
+# NGWAF Edge Deployment on SignalSciences.net
+resource "sigsci_edge_deployment" "ngwaf_edge_site_service" {
+  count           = var.activate_ngwaf_service ? 1 : 0
+  provider        = sigsci.firewall
+  site_short_name = var.ngwaf_site_name
+}
+
+resource "sigsci_edge_deployment_service" "ngwaf_edge_service_link" {
+  count            = var.activate_ngwaf_service ? 1 : 0
+  provider         = sigsci.firewall
+  site_short_name  = var.ngwaf_site_name
+  fastly_sid       = fastly_service_vcl.python_org.id
+  activate_version = var.activate_ngwaf_service
+  percent_enabled  = 100
+  depends_on = [
+    sigsci_edge_deployment.ngwaf_edge_site_service,
+    fastly_service_vcl.python_org,
+    fastly_service_dictionary_items.edge_security_dictionary_items,
+    fastly_service_dynamic_snippet_content.ngwaf_config_snippets,
+  ]
+}
+
+resource "sigsci_edge_deployment_service_backend" "ngwaf_edge_service_backend_sync" {
+  count                             = var.activate_ngwaf_service ? 1 : 0
+  provider                          = sigsci.firewall
+  site_short_name                   = var.ngwaf_site_name
+  fastly_sid                        = fastly_service_vcl.python_org.id
+  fastly_service_vcl_active_version = fastly_service_vcl.python_org.active_version
+  depends_on = [
+    sigsci_edge_deployment_service.ngwaf_edge_service_link,
+  ]
+}
diff --git a/infra/cdn/providers.tf b/infra/cdn/providers.tf
@@ -2,3 +2,11 @@ provider "fastly" {
   alias   = "cdn"
   api_key = var.fastly_key
 }
+
+provider "sigsci" {
+  alias          = "firewall"
+  corp           = var.ngwaf_corp_name
+  email          = var.ngwaf_email
+  auth_token     = var.ngwaf_token
+  fastly_api_key = var.fastly_key
+}
diff --git a/infra/cdn/variables.tf b/infra/cdn/variables.tf
@@ -40,4 +40,38 @@ variable "backend_address" {
 variable "default_ttl" {
   type        = number
   description = "The default TTL for the service."
-}
+}
+
+## NGWAF
+variable "activate_ngwaf_service" {
+  type        = bool
+  description = "Whether to activate the NGWAF service."
+}
+variable "edge_security_dictionary" {
+  type        = string
+  description = "The dictionary name for the Edge Security product."
+  default     = ""
+}
+variable "ngwaf_corp_name" {
+  type        = string
+  description = "Corp name for NGWAF"
+  default     = "python"
+}
+variable "ngwaf_site_name" {
+  type        = string
+  description = "Site SHORT name for NGWAF"
+
+  validation {
+    condition     = can(regex("^(test|stage|prod)$", var.ngwaf_site_name))
+    error_message = "'ngwaf_site_name' must be one of the following: test, stage, or prod"
+  }
+}
+variable "ngwaf_email" {
+  type        = string
+  description = "Email address associated with the token for the NGWAF API."
+}
+variable "ngwaf_token" {
+  type        = string
+  description = "Secret token for the NGWAF API."
+  sensitive   = true
+}
diff --git a/infra/cdn/versions.tf b/infra/cdn/versions.tf
@@ -4,5 +4,9 @@ terraform {
       source  = "fastly/fastly"
       version = "5.13.0"
     }
+    sigsci = {
+      source  = "signalsciences/sigsci"
+      version = "3.3.0"
+    }
   }
 }
diff --git a/infra/main.tf b/infra/main.tf
@@ -12,15 +12,20 @@ module "fastly_production" {
   fastly_key          = var.FASTLY_API_KEY
   fastly_header_token = var.FASTLY_HEADER_TOKEN
   s3_logging_keys     = var.fastly_s3_logging
+
+  ngwaf_site_name        = "prod"
+  ngwaf_email            = "infrastructure-staff@python.org"
+  ngwaf_token            = var.ngwaf_token
+  activate_ngwaf_service = false
 }
 
 module "fastly_staging" {
   source = "./cdn"
 
-  name            = "test.python.org"
-  domain          = "test.python.org"
-  subdomain       = "www.test.python.org"
-  extra_domains   = ["www.test.python.org"]
+  name          = "test.python.org"
+  domain        = "test.python.org"
+  subdomain     = "www.test.python.org"
+  extra_domains = ["www.test.python.org"]
   # TODO: adjust to test-pythondotorg when done testing NGWAF
   backend_address = "pythondotorg.ingress.us-east-2.psfhosted.computer"
   default_ttl     = 3600
@@ -29,4 +34,9 @@ module "fastly_staging" {
   fastly_key          = var.FASTLY_API_KEY
   fastly_header_token = var.FASTLY_HEADER_TOKEN
   s3_logging_keys     = var.fastly_s3_logging
+
+  ngwaf_site_name        = "test"
+  ngwaf_email            = "infrastructure-staff@python.org"
+  ngwaf_token            = var.ngwaf_token
+  activate_ngwaf_service = true
 }
diff --git a/infra/variables.tf b/infra/variables.tf
@@ -17,4 +17,9 @@ variable "fastly_s3_logging" {
   type        = map(string)
   description = "S3 bucket keys for Fastly logging"
   sensitive   = true
-}
+}
+variable "ngwaf_token" {
+  type        = string
+  description = "Secret token for the NGWAF API."
+  sensitive   = true
+}

Original file line number	Diff line number	Diff line change
`@@ -4,5 +4,9 @@ terraform {`
`4`	`4`	`source = "fastly/fastly"`
`5`	`5`	`version = "5.13.0"`
`6`	`6`	`}`
	`7`	`+ sigsci = {`
	`8`	`+ source = "signalsciences/sigsci"`
	`9`	`+ version = "3.3.0"`
	`10`	`+ }`
`7`	`11`	`}`
`8`	`12`	`}`