README

Yii Protobuf Extension is a wrapper for php protobuf c-extension.It provides an easy way to decode/encoder protobuf data with Yii.In addition to，it provides a tool to generate php proto files from .proto.

You must install php c-ext before you can use this extension

Requirements

To use PHP runtime library requires:

• C extension:protobuf >= 3.5.0
• PHP package:php >= 7.0.0
• Yii2.0 or above

Installation

You can install this extension by composer, as follows:

composer require language/yii2-protobuf

Configure

You need to add protobuf parser/formatter for request/response Component, as follows:

return [
    ...
    'components' => [
            ...
        'request' => [
            // !!! insert a secret key in the following (if it is empty) - this is required by cookie validation
            'cookieValidationKey' => 'inwyiHVV0KPon5UhGv6l0QYaWL4SC1ww',
            'parsers' => [
                'application/x-protobuf' => 'Language\Protobuf\ProtobufParser'
            ],
        ],
        'response' => [
            'formatters'=>[
                'protobuf' => [
                    'class'=>'Language\Protobuf\ProtobufResponseFormatter',
                    'hump'=>true, //By default, the field name is underlined to hump, for example, iphone_num is converted to IphoneNum.
                ],
            ],
        ],
        ...
    ],
]

As you can see, this extension use application/x-protobuf Content-Type to distinguish protobuf binary data.So, Client should set Content-Type as application/x-protobuf when it send protobuf binary data to Server

Generate Proto

You can run build.sh shell script to generate proto files after Editing msg.proto. it will generate PbApp and GPBMetadata.You should always edit .proto instead of editing generated proto files

bash build.sh

Register Proto

You need to register .proto.php files for encode protobuf data after generate proto files.You can create a base controller and register them, As follows:

class BaseController extends Controller
{
    use ProtobufTrait;  //Inject using the trait attribute asProtobuf method

    public function init()
    {
        parent::init();
        // 消息文件注册
        ProtobufManager::register(ROOT . '/proto/msg.proto.php');
    }
}

ProtobufTrait provides asProtobuf method to convert php hash table to protobuf data

Usage

You should alway get request params with $request->getBodyParams()intead of $_REQUEST.ProtobufParser parser protobuf to array

<?php
/**
 * Created by PhpStorm.
 * User: liugaoyun
 * Date: 2018/12/1
 * Time: 下午9:10
 */

namespace frontend\controllers;


use Language\Protobuf\ProtobufTrait;
use yii\base\Controller;

class TestController extends Controller
{

    public function actionProtobuf(){
        //params
        $params = \Yii::$app->getRequest()->getBodyParams();

        //TODO:your logic

        //convert array to protobuf
        $data = [
            'UserInfo'=>[
                'OpenUid'=>'xxxx',
                'NickName'=>'xxxx',
                'Age'=>100,
                'Param1'=>1000
            ],
            'AddrList'=>[
                'home'=>[
                    'Address'=>'addr1',
                    'IphoneNum'=>'153xxxx6476'
                ],
                'company'=>[
                    'Address'=>'addr2',
                    'IphoneNum'=>'188xxxx7049'
                ],
            ],
            'GoneCities'=>[
                ['Name'=>'Beijing'],
                ['Name'=>'Hangzhou'],
            ]
        ];


        return $this->asProtobuf(['class'=>'PbApp\UserLoginACK', 'data'=>$data]);
    }
}

Sample

�
�xxxx��xxxx�d ����
�home�
�153xxxx6476��
�company�
�188xxxx7049�	
�Beijing�

�Hangzhou

Customized Request Struct

By default, protobuf parser can only parser map<string,string> protobuf data as message-defined proto

message Request
{
    map<string,string>  Headers  = 1;			// Header Params
    map<string,string>  BodyParams  = 2;         // Body Params
}

You can define your request proto, as follows

message Meta{
    repeated    Params = 1;
}

message MyRequest
{
     map<string,Meta>  Headers  = 1;			// Header Params
        map<string,Meta>  BodyParams  = 2;         // Body Params
}

Then, you should tell ProtobufFormatter which class to serialize Array Data

return [
   ...
   'components' => [
           ...
       'response' => [
           'formatters'=>[
               'protobuf' => [
                   'class'=>'Language\Protobuf\ProtobufResponseFormatter',
                   'hump'=>true, //By default, the field name is underlined to hump, for example, iphone_num is converted to IphoneNum.
                   'requestProtoClass'=>'PbApp\MyRequest'
               ],
           ],
       ],
       ...
   ],
]

If you need more flexiable data-struct, you can parser the protobuf raw data, as follows:

message UserMsgLoginREQ{
    string  UserName = 1;
    string  Password = 2;
}

message FlexiableRequest
{
    string ProtoClass  = 1;         // proto class to parser
    bytes  ProtoData  = 2;         // bytes protobuf data
}

FlexiableRequest is a internal proto define. So, don't change the message name.