feat(TALE-7): reimplement integration system

app/integration/index.ts

@@ -1,28 +1,18 @@
-import docker from './docker'
-import kubernetes from './kubernetes'
-import proc from './proc'
+import dockerIntegration from './docker'
+import kubernetesIntegration from './kubernetes'
+import procIntegration from './proc'
 
-export interface Integration {
-	name: string
-	preflight: () => Promise<boolean>
-	sighup?: () => Promise<void>
-	restart?: () => Promise<void>
-}
+export * from './integration'
 
-// Because we previously supported the Docker integration by
-// checking for the HEADSCALE_CONTAINER variable, we need to
-// check for it here as well.
-//
-// This ensures that when people upgrade from older versions
-// of Headplane, they don't explicitly need to define the new
-// HEADSCALE_INTEGRATION variable that is needed to configure
-// an integration.
-export async function checkIntegration() {
+export function loadIntegration() {
 	let integration = process.env.HEADSCALE_INTEGRATION
 		?.trim()
 		.toLowerCase()
 
 	// Old HEADSCALE_CONTAINER variable upgrade path
+	// This ensures that when people upgrade from older versions of Headplane
+	// they don't explicitly need to define the new HEADSCALE_INTEGRATION
+	// variable that is needed to configure docker
 	if (!integration && process.env.HEADSCALE_CONTAINER) {
 		integration = 'docker'
 	}
@@ -32,32 +22,22 @@ export async function checkIntegration() {
 		return
 	}
 
-	let module: Integration | undefined
-	try {
-		module = getIntegration(integration)
-		await module.preflight()
-	} catch (error) {
-		console.error('Failed to load integration', error)
-		return
-	}
-
-	return module
-}
-
-function getIntegration(name: string) {
-	switch (name) {
+	switch (integration.toLowerCase().trim()) {
 		case 'docker': {
-			return docker
+			return dockerIntegration
 		}
-		case 'proc': {
-			return proc
+
+		case 'proc':
+		case 'native':
+		case 'linux': {
+			return procIntegration
 		}
+
 		case 'kubernetes':
 		case 'k8s': {
-			return kubernetes
-		}
-		default: {
-			throw new Error(`Unknown integration: ${name}`)
+			return kubernetesIntegration
 		}
 	}
+
+	console.error('Unknown integration:', integration)
 }