From bcb4005b96cab331f12889ebe6228ef2cde49c01 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 31 Mar 2026 18:12:42 +0000
Subject: [PATCH 1/2] Initial plan


From 6aabc949db821f4fc62476bd45098d4826498b6c Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 31 Mar 2026 18:16:03 +0000
Subject: [PATCH 2/2] Add dynamic header block based on path via
 add_header_based_on_path variable

Agent-Logs-Url: https://github.com/fastly/security-use-cases/sessions/89ca44d8-3889-4092-a301-46e601599557

Co-authored-by: BrooksCunningham <22921241+BrooksCunningham@users.noreply.github.com>
---
 .../modules/service-vcl/variables.tf          | 10 +++++++
 .../modules/service-vcl/vcl-service.tf        | 28 +++++++++++++++++++
 edge-terraform-router/prod-delivery/main.tf   |  1 +
 .../prod-delivery/variables.tf                | 10 +++++++
 4 files changed, 49 insertions(+)

diff --git a/edge-terraform-router/modules/service-vcl/variables.tf b/edge-terraform-router/modules/service-vcl/variables.tf
index a4611c5..7396edb 100644
--- a/edge-terraform-router/modules/service-vcl/variables.tf
+++ b/edge-terraform-router/modules/service-vcl/variables.tf
@@ -5,4 +5,14 @@ variable "fastly_routes" {
     origin_name = string
   }))
   default = []
+}
+
+variable "add_header_based_on_path" {
+  description = "A list of objects representing path-based header additions. If the request matches the path, the specified header is added."
+  type = list(object({
+    path         = string
+    header_name  = string
+    header_value = string
+  }))
+  default = []
 }
\ No newline at end of file
diff --git a/edge-terraform-router/modules/service-vcl/vcl-service.tf b/edge-terraform-router/modules/service-vcl/vcl-service.tf
index c2f3be7..7789a01 100644
--- a/edge-terraform-router/modules/service-vcl/vcl-service.tf
+++ b/edge-terraform-router/modules/service-vcl/vcl-service.tf
@@ -42,5 +42,33 @@ resource "fastly_service_vcl" "edge-terraform-router-demo" {
     }
   }
 
+  # Iterates over the array to create path-based request conditions
+  dynamic "condition" {
+    for_each = var.add_header_based_on_path
+    content {
+      # Creates a unique condition name based on the path (e.g., "path-condition-anything-foo")
+      name      = "path-condition-${replace(trimprefix(condition.value.path, "/"), "/", "-")}"
+      priority  = 10
+      # Evaluates the incoming request path against the path variable
+      statement = "req.url.path == \"${condition.value.path}\""
+      type      = "REQUEST"
+    }
+  }
+
+  # Iterates over the array to add request headers based on path conditions
+  dynamic "header" {
+    for_each = var.add_header_based_on_path
+    content {
+      # Creates a unique header action name based on the header name and path
+      name              = "header-${header.value.header_name}-${replace(trimprefix(header.value.path, "/"), "/", "-")}"
+      action            = "set"
+      type              = "request"
+      destination       = "http.${header.value.header_name}"
+      source            = "\"${header.value.header_value}\""
+      # Links this header action to the corresponding path condition above
+      request_condition = "path-condition-${replace(trimprefix(header.value.path, "/"), "/", "-")}"
+    }
+  }
+
   force_destroy = true
 }
\ No newline at end of file
diff --git a/edge-terraform-router/prod-delivery/main.tf b/edge-terraform-router/prod-delivery/main.tf
index 260110f..d7ad562 100644
--- a/edge-terraform-router/prod-delivery/main.tf
+++ b/edge-terraform-router/prod-delivery/main.tf
@@ -1,6 +1,7 @@
 module "service_vcl" {
     source                           = "../modules/service-vcl"
     fastly_routes                    = var.fastly_routes
+    add_header_based_on_path         = var.add_header_based_on_path
 
     providers = {
         fastly = fastly
diff --git a/edge-terraform-router/prod-delivery/variables.tf b/edge-terraform-router/prod-delivery/variables.tf
index a4611c5..7396edb 100644
--- a/edge-terraform-router/prod-delivery/variables.tf
+++ b/edge-terraform-router/prod-delivery/variables.tf
@@ -5,4 +5,14 @@ variable "fastly_routes" {
     origin_name = string
   }))
   default = []
+}
+
+variable "add_header_based_on_path" {
+  description = "A list of objects representing path-based header additions. If the request matches the path, the specified header is added."
+  type = list(object({
+    path         = string
+    header_name  = string
+    header_value = string
+  }))
+  default = []
 }
\ No newline at end of file