测试：judger封装为模块

module/sandbox-linux/hydro.json

@@ -0,0 +1,6 @@
+{
+    "name": "sandbox-linux",
+    "version": "1.0.0",
+    "os": "Linux",
+    "description": "Sandbox service for linux"
+}

module/sandbox-linux/service.js

@@ -0,0 +1,23 @@
+const os = require('os');
+const child = require('child_process');
+
+const p = child.spawn(path.resolve(os.tmpdir(), 'hydro', 'sandbox-linux', 'executorserver', ['-silent']);
+if (!p.stdout) throw new Error('Cannot start executorserver');
+else {
+    p.stdout.on('data', (data) => {
+        const s = data.toString();
+        console.log(s.substr(0, s.length - 1));
+    });
+    p.stderr.on('data', (data) => {
+        const s = data.toString();
+        console.log(s.substr(0, s.length - 1));
+    });
+}
+p.on('error', (error) => console.error(error));
+
+async function stop() {
+    p.emit('exit');
+}
+
+
+module.exports = { stop };