add ssh command test

app/controller/command.js

@@ -0,0 +1,19 @@
+const Controller = require('egg').Controller;
+
+class CommandController extends Controller{
+    async exec() {
+        const { ctx, service } = this;
+        const params = {
+              user: { type: 'string' },
+              password: { type: 'string' },
+              host:{ type:'string' },
+              cmd: {type: 'string'},
+        };
+        console.log(ctx.request.body);
+        ctx.validate(params, ctx.request.body);
+        const res = await service.command.exec(ctx.request.body);
+        ctx.body = {data: res};
+    }
+}
+
+module.exports = CommandController;

app/service/command.js

@@ -0,0 +1,25 @@
+const Service = require('egg').Service;
+var nssh = require('node-ssh');
+
+class CommandService extends Service{
+    async exec(params){
+        let {host, user, password, port, cmd} = params;
+        port = port || 22;
+        var ssh = new nssh();
+        return ssh.connect({
+          host: host,
+          port: port, 
+          username: user,
+          password: password
+        }).then(function(){
+            return ssh.execCommand(cmd, {}).then(function(result) {
+                ssh.dispose();
+                if(result.stderr != ""){
+                    return result.stderr;
+                }
+                return result.stdout;
+            }); 
+        });
+    }
+}
+module.exports = CommandService;