调整 server.before 触发点以及添加 process.exit 方法

How-To-Write-A-Dora-Plugin.md

@@ -42,4 +42,5 @@ Methods:
 - `middleware.after`
 - `server.before`
 - `server.after`
+- `process.exit`
 

src/index.js

@@ -11,6 +11,8 @@ const defaultArgs = {
   resolveDir: [defaultCwd],
 };
 
+let notDestroy = true;
+
 export default function createServer(_args) {
   const args = assign({}, defaultArgs, _args);
   log.config(args);
@@ -37,8 +39,10 @@ export default function createServer(_args) {
   }));
   _applyPlugins('middleware.after');
 
-  _applyPlugins('server.before');
   const server = http.createServer(app.callback());
+  pluginArgs.server = server; // pass server to plugin
+  _applyPlugins('server.before');
+
   server.listen(port, () => {
     // Fix log, #8
     const stream = process.stderr;
@@ -50,4 +54,20 @@ export default function createServer(_args) {
     log.info('dora', `listened on ${port}`);
     _applyPlugins('server.after');
   });
+
+
+  // exit 事件和 SIGINT 事件是否一定只会发生一次呢? 如果不是, 需要防止多次触发 process.exit
+  process.on('exit', () => {
+    if (notDestroy) {
+      _applyPlugins('process.exit');
+    }
+    notDestroy = false;
+  });
+
+  process.on('SIGINT', () => {
+    if (notDestroy) {
+      _applyPlugins('process.exit');
+    }
+    notDestroy = false;
+  });
 }