add cloudflare worker example

Signed-off-by: Jason Hall <jason@chainguard.dev>

.gitignore

@@ -7,3 +7,5 @@ terraform.tfstate.backup
 terraform.tfstate.*.backup
 .terraform.tfstate.lock.*
 .terraform.lock.hcl
+
+terraform.tfvars

cf-worker/main.tf

@@ -0,0 +1,54 @@
+terraform {
+  required_providers {
+    cloudflare = { source = "cloudflare/cloudflare" }
+  }
+}
+
+variable "name" { type = string }
+variable "cloudflare_zone" { type = string }
+variable "cloudflare_api_token" { type = string }
+variable "cloudflare_account_id" { type = string }
+
+provider "cloudflare" {
+  api_token = var.cloudflare_api_token
+}
+
+// TODO: need to manually enable the workers.dev route in the dashboard
+// use cloudflare_worker_route instead to set up routing
+resource "cloudflare_worker_script" "script" {
+  account_id = var.cloudflare_account_id
+  name       = var.name
+  content    = file("script.js")
+
+  kv_namespace_binding {
+    name         = "KV"
+    namespace_id = cloudflare_workers_kv_namespace.kv_ns.id
+  }
+}
+
+
+/*
+resource "cloudflare_worker_route" "route" {
+  zone_id     = data.cloudflare_zone.zone.id
+  pattern     = "${var.name}.${var.cloudflare_zone}/*"
+  script_name = cloudflare_worker_script.script.name
+}
+
+data "cloudflare_zone" "zone" {
+  name = var.cloudflare_zone
+}
+*/
+
+resource "cloudflare_workers_kv_namespace" "kv_ns" {
+  account_id = var.cloudflare_account_id
+  title      = "${var.name}-namespace"
+}
+
+// Set a value.
+resource "cloudflare_workers_kv" "kv" {
+  account_id   = var.cloudflare_account_id
+  namespace_id = cloudflare_workers_kv_namespace.kv_ns.id
+  key          = "foo"
+  value        = "bar"
+}
+

cf-worker/script.js

@@ -0,0 +1,6 @@
+addEventListener("fetch", (event) => {
+    console.log("Hello from the service worker!");
+    let value = KV.get("foo");
+    event.respondWith(new Response(value,
+        { headers: { "content-type": "text/plain" } }));
+});