Merge pull request #5 from kibertoad/feature/optional-adapter

Make adapter optional to support in-memory cases

plugin.d.ts

@@ -13,7 +13,7 @@ declare module 'fastify' {
 
 export interface FastifyCasbinOptions {
   model: string | Model
-  adapter: string | Adapter
+  adapter?: string | Adapter
   watcher?: Watcher
 }
 

plugin.js

@@ -4,13 +4,16 @@ const fp = require('fastify-plugin')
 const { newEnforcer, casbinJsGetPermissionForUser } = require('casbin')
 
 async function fastifyCasbin (fastify, { model, adapter, watcher }) {
-  const enforcer = await newEnforcer(model, adapter)
+  const enforcerParams = adapter ? [model, adapter] : [model]
+  const enforcer = await newEnforcer(...enforcerParams)
 
   if (watcher) {
     enforcer.setWatcher(watcher)
   }
 
-  await enforcer.loadPolicy()
+  if (adapter) {
+    await enforcer.loadPolicy()
+  }
 
   fastify.onClose(async () => {
     await Promise.all(

test/casbin.test.js

@@ -52,6 +52,25 @@ test('preloaded model and adapter should be accepted', t => {
   })
 })
 
+test('adapter can be omitted for in-memory storage', t => {
+  t.plan(2)
+
+  const fastify = Fastify()
+  const preloadedModel = new Model()
+  preloadedModel.loadModel(modelPath)
+
+  fastify.register(plugin, {
+    model: preloadedModel
+  })
+
+  fastify.ready(err => {
+    t.error(err)
+    t.ok(fastify.casbin)
+
+    fastify.close()
+  })
+})
+
 test('casbinJsGetPermissionForUser should exist', t => {
   t.plan(2)
 

test/plugin.test-d.ts

@@ -26,6 +26,11 @@ server.register(fastifyCasbin, {
   adapter: 'some adapter',
 })
 
+// in-memory adapter
+server.register(fastifyCasbin, {
+  model: 'some file'
+})
+
 const model: Model = {} as Model
 server.register(fastifyCasbin, {
   model: model,