Tableau Server Training: What's New in the Course

Introduction

Janbask's Tableau training will assist you with figuring out how to investigate data and construct dashboards utilizing the Tableau instrument. During this certificate course, our master mentors will show you every one of the fundamental Analytical and Advanced Data perception abilities through ongoing use-cases. Additionally, this Tableau e-advancing course covers generally key ideas like Data Blending, Data Mapping, Graphs, Charts, and LOD articulation, and that's only the tip of the iceberg. Toward the finish of this training program, you'll acquire the abilities to certainly CLEAR the Tableau 10 Qualified Associate Certification test  tableau server training online

Janbask’ Tableau certification course is aligned with the Industry needs. It enables an aspirant to use Tableau Desktop quickly and comprehensively, and analyze and present data. The main focus is to teach Analytical techniques, best practices, and how to create dashboards that yield meaningful insights. This also includes advanced calculations, enhanced dashboard interactivity, and advanced analytics.

Our training program also helps in connecting Tableau software to different datasets of Excel, CSV, and SQL databases to simplify the visualization of data and hence enables organizations to take important business decisions.

Perception changes the data into a graphical configuration and helps associations in going with shrewd choices. Tableau has turned into a central part of the data representation industry with clients from different foundations. It makes dissecting data quick, simple, delightful, and valuable. Convincing highlights and a simple-to-utilize approach of Tableau have pursued the best decision for data perception in various organizations from one side of the planet to the other.

Tableau has been perceived as a market chief for the seventh sequential year in the Gartner sorcery quadrant. The work's potential open doors in Tableau are likewise duplicating a result of its wide acknowledgment by worldwide associations.

Below mentioned Professionals can take this Tableau training course

• Data Scientists, Business Intelligence Professionals, Testing Professionals
• Statisticians, Business Analysts,Project Managers
• Data Visual Analysts Functional Experts

Graduates and Professionals looking to move to the analytics domain

Learning Objectives for the Analyst 

Janbask Tableau Training Course is intended to assist you with learning Tableau and gain aptitude in different data perception ideas including the crucial ideas of Tableau like channels, charts, boundaries, table computation, guides, and dashboards. You will likewise gain inside and out information on data accumulation, data mixing, and joining of Tableau with R and Hadoop.

New Abilities as an Analyst 

Our ensured constant specialists will cover the underneath ideas in this Tableau affirmation course.

• Prologue to data perception and layout associations with the data.
• Perform data granularity on totaled data, and oversee concentrates and metadata.
• Perform arranging, gathering, and sifting on the data sets.
• You will be acquainted with different chart types and their use in Tableau.
• Utilize different lines, for example, pattern lines, reference lines, and factual strategies to portray data.
• Making dashboards utilizing various designs and stories.
• Clarification of LOD issues with use cases for clear comprehension.
• Prologue to propel diagrams, for example, Waterfall outlines, Gantt graphs, Funnel Charts, Control Charts, and Whiskers plots.
• The incorporation cycle of Tableau with R and Hadoop and make them into intuitive dashboards to distribute on the web.

Some of the predominant skills required to be a tableau developer are highlighted below:-

• Basic Data Comprehending skill.
• Data Modeling & Transformation.
• Math & Statistical Analysis.
• Analytical & Visualization Skills.
• Filtering, Sorting, and Grouping.
• Tableau Software Suite knowledge.

Learning the Course in 2022 

Tableau is arising as one of the moving advances in the field of Business Intelligence.

Top organizations like LinkedIn, Amazon, Ferrari and other 35,000 organizations are involving Tableau in their arrangements.

The interest for Tableau experts is soaring as this data perception device is acquiring high prevalence in organizations.

The interest for Tableau experts will develop significantly further as a lot more associations are searching for a super durable reception of Tableau rather than trial and error.

Tableau Developers usually have a broad understanding of the business. They also have a tremendous ability to design reports and possess strong analytical skills. 

Responsibilities of the Analyst

Their primary responsibilities include:

Janbask’ Tableau curriculum is designed by the leading industry experts to make you a Certified Tableau Analyst (Developer, Administrator, Operations Expert)

• Refining the prevailing system.
• Developing, maintaining, and managing advanced reporting, analytics, dashboards, and other BI solutions.
• Data analysis, data validation, and data mapping/design.

Efficient Tableau skills enable a business analyst to take the most important decisions in an organization. By learning Tableau as an aspirant:

• Can handle data retrieval, creation, organization, and visualization and become an independent analyst by handling the responsibilities of Tableau Prep Builder, and so on.
• In-demand Job portfolios like Tableau Developer, Data Analyst, Business Analyst, and BI Analyst are available.

It is for anyone who works with data – regardless of technical or analytical background. This course is designed to help you understand and use the important concepts and techniques in Tableau to move from simple to complex visualizations and learn how to combine them in interactive dashboards.

What is GEEK

Buddha Community

The pros of Tableau Software

Although all other tableau features are overshadowed by the ultimate quality visualization of interactive data, the list of the benefits that the software brings to companies is very wide.
Remarkable Visualization Capabilities:
Yes, the unparalleled abilities to visualize data are on the leading of the list of Tableau software advantages. The quality visualization details of the application are primarily what opponents of Tableau software present. Also, standard business intellect vendors’ products, such as Oracle Data Visualization data rendition functions, do not compete with the quality of illustration and model supplied by Tableau.
It transforms unbuilt statistical data into an entire logical result, that is completely optional, interactive and adorable dashboards. They are available in sorts of graphics and are comfortable to utilize in industry affairs.
Ease of Utilize:
The intuitive way Tableau generates graphics and a user-friendly interface enables non-dev users to perform the basic application features to the fullest. In a drag-and-drop way, clients organize raw data into catchy diagrams, which enables the analysis of information and removes the need for the support of an IT team for pattern creation.
With no in-depth training, lay customers can enjoy the capabilities provided by Tableau for stats parsing, such as dashboard creation, and so on. To get into the abilities of the solution, however, a detailed understanding is also a must. Often, if a business wants to extend the functionality of the solution, the close involvement of IT experts is a requirement.
High Performance:
Users rate their overall performance as robust and reliable, in addition to its high visualization capabilities. On even big data, the software still works rapidly, making its strong success an important point in the collection of Tableau advantages.
Multiple Data Source Connections:
The program supports the establishment of connexions with several sources of data, such as HADOOP, SAP and DB Technologies, that increases the performance of data analytics and allows a cohesive, insightful interface to be created.
Thriving Community and Forum:
There is a steady increase in the number of Tableau users who invest their knowledge and abilities in the group. Enterprise customers will strengthen their understanding of data analysis and reporting and get a lot of valuable insight into this community. Forum visitors are also ready to assist in addressing any client concerns and to share their experience.
Mobile-Friend liness:
And there is an effective phone device available for IOS and Android, the last in our collection of core Tableau advantages. This provides Tableau clients with versatility, helps them to keep statistics at their fingertips, and enables the full functionality of the desktop and web models.
Do you desire to learn Tableau Training in Chennai with placement? FITA is the right place to study Tableau Course in Chennai with good knowledge, Tableau Certification will help to get the best career in this domain. We are also having branch Tableau Training in Bangalore.

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200 hour Yoga Teacher Training Course in Ghaziabad, India | Divyaa Yoga Institute

Yoga gives peace to the body and mind that helps in living a healthy & happy life. It comes with a lot of benefits for both mental and physical health. Meditation and Yoga can cure many diseases and after seeing the results across the world, people are getting more into meditation and yoga. Many of them are trying to motivate others for shifting towards yoga by saving a little bit of time from daily routine. It’s not a bad idea to start a carrier in yoga as a yoga trainer, teacher, consultant or Therapist. If you are interested in it and doing it for a longer period.

Divyaa yoga institute launched 200 yoga teacher training certification courses in Ghaziabad and come up as a world-class professional yoga institute in Delhi NCR for the people who love yoga and ready to make a carrier in it. This is the best yoga teacher training institute in India that provides group yoga classes, yoga certification courses, yoga workshops, and provides many other courses that can help in gaining professional knowledge.

200 hour yoga teacher training course in India facilitates a professional syllabus that starts from basic and goes to the advanced level. They provide personal female/ male yoga trainer to the students according to their requirements.

200 hour yoga teacher training course syllabus includes mantra chanting. It releases positive energy from your mind that helps in decreasing negative thoughts. The study of asana is one of the most important points in the syllabus. Their trainers take care of the proper posture and body alignment so that the risk of injury can be reduced.

When teachers teach, they want to be sure that every student is getting things properly. We provide personal yoga trainer on demand to balance the comfortability while doing yoga practice. When you will invest in yoga, it will make your life smoother and happier forever. Taking yoga as your carrier is an excellent option because in this journey you will give knowledge of being healthy, happy, and calm to others. You will feel great when you will be the reason for the happiness of thousands of people who come to you in search of stability and calmness in their life.

For beginners, it is very important to do pose carefully to avoid injury. Their trainers use props at early stages so that beginners can improve after a few days. Improvisation plays a crucial role and at Divyaa yoga institute, professional teachers take care of every little thing so that every single person gets satisfaction in terms of peace, happiness, and whatever their goal is after adding meditation and yoga to their life schedule.

On the launch of 200 hour yoga teacher training course, the owner of Divyaa yoga institute said that “Yoga is an ancient practice and meditation that is now on everyone’s tongue. People are getting familiar with yoga because of positive results all across the world. Yoga is come up as a treatment for heart and other health issues. We are trying to encourage people, to give your mind and body relaxation from the stress and tension that they have filled up in their life because of pressure and duties.”

He further adds about the course “We are offering 200 hour yoga teacher training course for the people who have an interest or have some experience in the yoga profession. Now, you can convert your interest into a profession by opting for our professional yoga courses in India. We have experienced professional yoga trainers at our institute from across the world and sharing their experience with the people who are willing or trying to join yoga for the rest of their life.”

About Divyaa yoga institute
Divyaa yoga institute is a leading international yoga school in Ghaziabad, that provides several yoga programs that include yoga workshops, group yoga classes, corporate yoga classes, private yoga classes, and stress management & spiritual classes in Ghaziabad.

If you are interested in yoga whether you have experience or not and want to take yoga as your profession then Divyaa yoga institute is the right place for your goal. They will give shape to your interest and develop your yoga skills in order to make you a professional yoga trainer. They offer courses like yoga for better living certification courses of 21 days, meditation certificate course, and 200 hour yoga teacher training course that we have talked about above. Join today if you have a spark in you, they will show you the path to a better life in yoga.

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LaravelS: An Out-Of-The-Box Adapter Between Swoole and Laravel/Lumen

 _                               _  _____ 
| |                             | |/ ____|
| |     __ _ _ __ __ ___   _____| | (___  
| |    / _` | '__/ _` \ \ / / _ \ |\___ \ 
| |___| (_| | | | (_| |\ V /  __/ |____) |
|______\__,_|_|  \__,_| \_/ \___|_|_____/ 
                                           

🚀 LaravelS is an out-of-the-box adapter between Swoole and Laravel/Lumen.

Please Watch this repository to get the latest updates.

中文文档

Features

Built-in Http/WebSocket server

Multi-port mixed protocol

Custom process

Memory resident

Asynchronous event listening

Asynchronous task queue

Millisecond cron job

Common Components

Gracefully reload

Automatically reload after modifying code

Support Laravel/Lumen both, good compatibility

Simple & Out of the box

Benchmark

Which is the fastest web framework?

TechEmpower Framework Benchmarks

Requirements

Dependency	Requirement
PHP	>= 5.5.9 Recommend PHP7+
Swoole	>= 1.7.19 No longer support PHP5 since 2.0.12 Recommend 4.5.0+
Laravel/Lumen	>= 5.1 Recommend 8.0+

Install

1.Require package via Composer(packagist).

composer require "hhxsv5/laravel-s:~3.7.0" -vvv
# Make sure that your composer.lock file is under the VCS

2.Register service provider(pick one of two).

Laravel: in config/app.php file, Laravel 5.5+ supports package discovery automatically, you should skip this step

'providers' => [
    //...
    Hhxsv5\LaravelS\Illuminate\LaravelSServiceProvider::class,
],

Lumen: in bootstrap/app.php file

$app->register(Hhxsv5\LaravelS\Illuminate\LaravelSServiceProvider::class);

3.Publish configuration and binaries.

After upgrading LaravelS, you need to republish; click here to see the change notes of each version.

php artisan laravels publish
# Configuration: config/laravels.php
# Binary: bin/laravels bin/fswatch bin/inotify

4.Change config/laravels.php: listen_ip, listen_port, refer Settings.

5.Performance tuning

Adjust kernel parameters

Number of Workers: LaravelS uses Swoole's Synchronous IO mode, the larger the worker_num setting, the better the concurrency performance, but it will cause more memory usage and process switching overhead. If one request takes 100ms, in order to provide 1000QPS concurrency, at least 100 Worker processes need to be configured. The calculation method is: worker_num = 1000QPS/(1s/1ms) = 100, so incremental pressure testing is needed to calculate the best worker_num.

Number of Task Workers

Run

Please read the notices carefully before running, Important notices(IMPORTANT).

• Commands: php bin/laravels {start|stop|restart|reload|info|help}.

Command	Description
start	Start LaravelS, list the processes by "ps -ef|grep laravels"
stop	Stop LaravelS, and trigger the method onStop of Custom process
restart	Restart LaravelS: Stop gracefully before starting; The service is unavailable until startup is complete
reload	Reload all Task/Worker/Timer processes which contain your business codes, and trigger the method onReload of Custom process, CANNOT reload Master/Manger processes. After modifying config/laravels.php, you only have to call restart to restart
info	Display component version information
help	Display help information

• Boot options for the commands start and restart.

Option	Description
-d|--daemonize	Run as a daemon, this option will override the swoole.daemonize setting in laravels.php
-e|--env	The environment the command should run under, such as --env=testing will use the configuration file .env.testing firstly, this feature requires Laravel 5.2+
-i|--ignore	Ignore checking PID file of Master process
-x|--x-version	The version(branch) of the current project, stored in $_ENV/$_SERVER, access via $_ENV['X_VERSION'] $_SERVER['X_VERSION'] $request->server->get('X_VERSION')

• Runtime files: start will automatically execute php artisan laravels config and generate these files, developers generally don't need to pay attention to them, it's recommended to add them to .gitignore.

File	Description
storage/laravels.conf	LaravelS's runtime configuration file
storage/laravels.pid	PID file of Master process
storage/laravels-timer-process.pid	PID file of the Timer process
storage/laravels-custom-processes.pid	PID file of all custom processes

Deploy

It is recommended to supervise the main process through Supervisord, the premise is without option -d and to set swoole.daemonize to false.

[program:laravel-s-test]
directory=/var/www/laravel-s-test
command=/usr/local/bin/php bin/laravels start -i
numprocs=1
autostart=true
autorestart=true
startretries=3
user=www-data
redirect_stderr=true
stdout_logfile=/var/log/supervisor/%(program_name)s.log

Cooperate with Nginx (Recommended)

Demo.

gzip on;
gzip_min_length 1024;
gzip_comp_level 2;
gzip_types text/plain text/css text/javascript application/json application/javascript application/x-javascript application/xml application/x-httpd-php image/jpeg image/gif image/png font/ttf font/otf image/svg+xml;
gzip_vary on;
gzip_disable "msie6";
upstream swoole {
    # Connect IP:Port
    server 127.0.0.1:5200 weight=5 max_fails=3 fail_timeout=30s;
    # Connect UnixSocket Stream file, tips: put the socket file in the /dev/shm directory to get better performance
    #server unix:/yourpath/laravel-s-test/storage/laravels.sock weight=5 max_fails=3 fail_timeout=30s;
    #server 192.168.1.1:5200 weight=3 max_fails=3 fail_timeout=30s;
    #server 192.168.1.2:5200 backup;
    keepalive 16;
}
server {
    listen 80;
    # Don't forget to bind the host
    server_name laravels.com;
    root /yourpath/laravel-s-test/public;
    access_log /yourpath/log/nginx/$server_name.access.log  main;
    autoindex off;
    index index.html index.htm;
    # Nginx handles the static resources(recommend enabling gzip), LaravelS handles the dynamic resource.
    location / {
        try_files $uri @laravels;
    }
    # Response 404 directly when request the PHP file, to avoid exposing public/*.php
    #location ~* \.php$ {
    #    return 404;
    #}
    location @laravels {
        # proxy_connect_timeout 60s;
        # proxy_send_timeout 60s;
        # proxy_read_timeout 120s;
        proxy_http_version 1.1;
        proxy_set_header Connection "";
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Real-PORT $remote_port;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_set_header Scheme $scheme;
        proxy_set_header Server-Protocol $server_protocol;
        proxy_set_header Server-Name $server_name;
        proxy_set_header Server-Addr $server_addr;
        proxy_set_header Server-Port $server_port;
        # "swoole" is the upstream
        proxy_pass http://swoole;
    }
}

Cooperate with Apache

LoadModule proxy_module /yourpath/modules/mod_proxy.so
LoadModule proxy_balancer_module /yourpath/modules/mod_proxy_balancer.so
LoadModule lbmethod_byrequests_module /yourpath/modules/mod_lbmethod_byrequests.so
LoadModule proxy_http_module /yourpath/modules/mod_proxy_http.so
LoadModule slotmem_shm_module /yourpath/modules/mod_slotmem_shm.so
LoadModule rewrite_module /yourpath/modules/mod_rewrite.so
LoadModule remoteip_module /yourpath/modules/mod_remoteip.so
LoadModule deflate_module /yourpath/modules/mod_deflate.so

<IfModule deflate_module>
    SetOutputFilter DEFLATE
    DeflateCompressionLevel 2
    AddOutputFilterByType DEFLATE text/html text/plain text/css text/javascript application/json application/javascript application/x-javascript application/xml application/x-httpd-php image/jpeg image/gif image/png font/ttf font/otf image/svg+xml
</IfModule>

<VirtualHost *:80>
    # Don't forget to bind the host
    ServerName www.laravels.com
    ServerAdmin hhxsv5@sina.com

    DocumentRoot /yourpath/laravel-s-test/public;
    DirectoryIndex index.html index.htm
    <Directory "/">
        AllowOverride None
        Require all granted
    </Directory>

    RemoteIPHeader X-Forwarded-For

    ProxyRequests Off
    ProxyPreserveHost On
    <Proxy balancer://laravels>  
        BalancerMember http://192.168.1.1:5200 loadfactor=7
        #BalancerMember http://192.168.1.2:5200 loadfactor=3
        #BalancerMember http://192.168.1.3:5200 loadfactor=1 status=+H
        ProxySet lbmethod=byrequests
    </Proxy>
    #ProxyPass / balancer://laravels/
    #ProxyPassReverse / balancer://laravels/

    # Apache handles the static resources, LaravelS handles the dynamic resource.
    RewriteEngine On
    RewriteCond %{DOCUMENT_ROOT}%{REQUEST_FILENAME} !-d
    RewriteCond %{DOCUMENT_ROOT}%{REQUEST_FILENAME} !-f
    RewriteRule ^/(.*)$ balancer://laravels%{REQUEST_URI} [P,L]

    ErrorLog ${APACHE_LOG_DIR}/www.laravels.com.error.log
    CustomLog ${APACHE_LOG_DIR}/www.laravels.com.access.log combined
</VirtualHost>

Enable WebSocket server

The Listening address of WebSocket Sever is the same as Http Server.

1.Create WebSocket Handler class, and implement interface WebSocketHandlerInterface.The instant is automatically instantiated when start, you do not need to manually create it.

namespace App\Services;
use Hhxsv5\LaravelS\Swoole\WebSocketHandlerInterface;
use Swoole\Http\Request;
use Swoole\Http\Response;
use Swoole\WebSocket\Frame;
use Swoole\WebSocket\Server;
/**
 * @see https://www.swoole.co.uk/docs/modules/swoole-websocket-server
 */
class WebSocketService implements WebSocketHandlerInterface
{
    // Declare constructor without parameters
    public function __construct()
    {
    }
    // public function onHandShake(Request $request, Response $response)
    // {
           // Custom handshake: https://www.swoole.co.uk/docs/modules/swoole-websocket-server-on-handshake
           // The onOpen event will be triggered automatically after a successful handshake
    // }
    public function onOpen(Server $server, Request $request)
    {
        // Before the onOpen event is triggered, the HTTP request to establish the WebSocket has passed the Laravel route,
        // so Laravel's Request, Auth information are readable, Session is readable and writable, but only in the onOpen event.
        // \Log::info('New WebSocket connection', [$request->fd, request()->all(), session()->getId(), session('xxx'), session(['yyy' => time()])]);
        // The exceptions thrown here will be caught by the upper layer and recorded in the Swoole log. Developers need to try/catch manually.
        $server->push($request->fd, 'Welcome to LaravelS');
    }
    public function onMessage(Server $server, Frame $frame)
    {
        // \Log::info('Received message', [$frame->fd, $frame->data, $frame->opcode, $frame->finish]);
        // The exceptions thrown here will be caught by the upper layer and recorded in the Swoole log. Developers need to try/catch manually.
        $server->push($frame->fd, date('Y-m-d H:i:s'));
    }
    public function onClose(Server $server, $fd, $reactorId)
    {
        // The exceptions thrown here will be caught by the upper layer and recorded in the Swoole log. Developers need to try/catch manually.
    }
}

2.Modify config/laravels.php.

// ...
'websocket'      => [
    'enable'  => true, // Note: set enable to true
    'handler' => \App\Services\WebSocketService::class,
],
'swoole'         => [
    //...
    // Must set dispatch_mode in (2, 4, 5), see https://www.swoole.co.uk/docs/modules/swoole-server/configuration
    'dispatch_mode' => 2,
    //...
],
// ...

3.Use SwooleTable to bind FD & UserId, optional, Swoole Table Demo. Also you can use the other global storage services, like Redis/Memcached/MySQL, but be careful that FD will be possible conflicting between multiple Swoole Servers.

4.Cooperate with Nginx (Recommended)

Refer WebSocket Proxy

map $http_upgrade $connection_upgrade {
    default upgrade;
    ''      close;
}
upstream swoole {
    # Connect IP:Port
    server 127.0.0.1:5200 weight=5 max_fails=3 fail_timeout=30s;
    # Connect UnixSocket Stream file, tips: put the socket file in the /dev/shm directory to get better performance
    #server unix:/yourpath/laravel-s-test/storage/laravels.sock weight=5 max_fails=3 fail_timeout=30s;
    #server 192.168.1.1:5200 weight=3 max_fails=3 fail_timeout=30s;
    #server 192.168.1.2:5200 backup;
    keepalive 16;
}
server {
    listen 80;
    # Don't forget to bind the host
    server_name laravels.com;
    root /yourpath/laravel-s-test/public;
    access_log /yourpath/log/nginx/$server_name.access.log  main;
    autoindex off;
    index index.html index.htm;
    # Nginx handles the static resources(recommend enabling gzip), LaravelS handles the dynamic resource.
    location / {
        try_files $uri @laravels;
    }
    # Response 404 directly when request the PHP file, to avoid exposing public/*.php
    #location ~* \.php$ {
    #    return 404;
    #}
    # Http and WebSocket are concomitant, Nginx identifies them by "location"
    # !!! The location of WebSocket is "/ws"
    # Javascript: var ws = new WebSocket("ws://laravels.com/ws");
    location =/ws {
        # proxy_connect_timeout 60s;
        # proxy_send_timeout 60s;
        # proxy_read_timeout: Nginx will close the connection if the proxied server does not send data to Nginx in 60 seconds; At the same time, this close behavior is also affected by heartbeat setting of Swoole.
        # proxy_read_timeout 60s;
        proxy_http_version 1.1;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Real-PORT $remote_port;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_set_header Scheme $scheme;
        proxy_set_header Server-Protocol $server_protocol;
        proxy_set_header Server-Name $server_name;
        proxy_set_header Server-Addr $server_addr;
        proxy_set_header Server-Port $server_port;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        proxy_pass http://swoole;
    }
    location @laravels {
        # proxy_connect_timeout 60s;
        # proxy_send_timeout 60s;
        # proxy_read_timeout 60s;
        proxy_http_version 1.1;
        proxy_set_header Connection "";
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Real-PORT $remote_port;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_set_header Scheme $scheme;
        proxy_set_header Server-Protocol $server_protocol;
        proxy_set_header Server-Name $server_name;
        proxy_set_header Server-Addr $server_addr;
        proxy_set_header Server-Port $server_port;
        proxy_pass http://swoole;
    }
}

5.Heartbeat setting

Heartbeat setting of Swoole

// config/laravels.php
'swoole' => [
    //...
    // All connections are traversed every 60 seconds. If a connection does not send any data to the server within 600 seconds, the connection will be forced to close.
    'heartbeat_idle_time'      => 600,
    'heartbeat_check_interval' => 60,
    //...
],

Proxy read timeout of Nginx

# Nginx will close the connection if the proxied server does not send data to Nginx in 60 seconds
proxy_read_timeout 60s;

6.Push data in controller

namespace App\Http\Controllers;
class TestController extends Controller
{
    public function push()
    {
        $fd = 1; // Find fd by userId from a map [userId=>fd].
        /**@var \Swoole\WebSocket\Server $swoole */
        $swoole = app('swoole');
        $success = $swoole->push($fd, 'Push data to fd#1 in Controller');
        var_dump($success);
    }
}

Listen events

System events

Usually, you can reset/destroy some global/static variables, or change the current Request/Response object.

laravels.received_request After LaravelS parsed Swoole\Http\Request to Illuminate\Http\Request, before Laravel's Kernel handles this request.

// Edit file `app/Providers/EventServiceProvider.php`, add the following code into method `boot`
// If no variable $events, you can also call Facade \Event::listen(). 
$events->listen('laravels.received_request', function (\Illuminate\Http\Request $req, $app) {
    $req->query->set('get_key', 'hhxsv5');// Change query of request
    $req->request->set('post_key', 'hhxsv5'); // Change post of request
});

laravels.generated_response After Laravel's Kernel handled the request, before LaravelS parses Illuminate\Http\Response to Swoole\Http\Response.

// Edit file `app/Providers/EventServiceProvider.php`, add the following code into method `boot`
// If no variable $events, you can also call Facade \Event::listen(). 
$events->listen('laravels.generated_response', function (\Illuminate\Http\Request $req, \Symfony\Component\HttpFoundation\Response $rsp, $app) {
    $rsp->headers->set('header-key', 'hhxsv5');// Change header of response
});

Customized asynchronous events

This feature depends on AsyncTask of Swoole, your need to set swoole.task_worker_num in config/laravels.php firstly. The performance of asynchronous event processing is influenced by number of Swoole task process, you need to set task_worker_num appropriately.

1.Create event class.

use Hhxsv5\LaravelS\Swoole\Task\Event;
class TestEvent extends Event
{
    protected $listeners = [
        // Listener list
        TestListener1::class,
        // TestListener2::class,
    ];
    private $data;
    public function __construct($data)
    {
        $this->data = $data;
    }
    public function getData()
    {
        return $this->data;
    }
}

2.Create listener class.

use Hhxsv5\LaravelS\Swoole\Task\Task;
use Hhxsv5\LaravelS\Swoole\Task\Listener;
class TestListener1 extends Listener
{
    /**
     * @var TestEvent
     */
    protected $event;
    
    public function handle()
    {
        \Log::info(__CLASS__ . ':handle start', [$this->event->getData()]);
        sleep(2);// Simulate the slow codes
        // Deliver task in CronJob, but NOT support callback finish() of task.
        // Note: Modify task_ipc_mode to 1 or 2 in config/laravels.php, see https://www.swoole.co.uk/docs/modules/swoole-server/configuration
        $ret = Task::deliver(new TestTask('task data'));
        var_dump($ret);
        // The exceptions thrown here will be caught by the upper layer and recorded in the Swoole log. Developers need to try/catch manually.
    }
}

3.Fire event.

// Create instance of event and fire it, "fire" is asynchronous.
use Hhxsv5\LaravelS\Swoole\Task\Event;
$event = new TestEvent('event data');
// $event->delay(10); // Delay 10 seconds to fire event
// $event->setTries(3); // When an error occurs, try 3 times in total
$success = Event::fire($event);
var_dump($success);// Return true if sucess, otherwise false

Asynchronous task queue

This feature depends on AsyncTask of Swoole, your need to set swoole.task_worker_num in config/laravels.php firstly. The performance of task processing is influenced by number of Swoole task process, you need to set task_worker_num appropriately.

1.Create task class.

use Hhxsv5\LaravelS\Swoole\Task\Task;
class TestTask extends Task
{
    private $data;
    private $result;
    public function __construct($data)
    {
        $this->data = $data;
    }
    // The logic of task handling, run in task process, CAN NOT deliver task
    public function handle()
    {
        \Log::info(__CLASS__ . ':handle start', [$this->data]);
        sleep(2);// Simulate the slow codes
        // The exceptions thrown here will be caught by the upper layer and recorded in the Swoole log. Developers need to try/catch manually.
        $this->result = 'the result of ' . $this->data;
    }
    // Optional, finish event, the logic of after task handling, run in worker process, CAN deliver task 
    public function finish()
    {
        \Log::info(__CLASS__ . ':finish start', [$this->result]);
        Task::deliver(new TestTask2('task2 data')); // Deliver the other task
    }
}

2.Deliver task.

// Create instance of TestTask and deliver it, "deliver" is asynchronous.
use Hhxsv5\LaravelS\Swoole\Task\Task;
$task = new TestTask('task data');
// $task->delay(3);// delay 3 seconds to deliver task
// $task->setTries(3); // When an error occurs, try 3 times in total
$ret = Task::deliver($task);
var_dump($ret);// Return true if sucess, otherwise false

Millisecond cron job

Wrapper cron job base on Swoole's Millisecond Timer, replace Linux Crontab.

1.Create cron job class.

namespace App\Jobs\Timer;
use App\Tasks\TestTask;
use Swoole\Coroutine;
use Hhxsv5\LaravelS\Swoole\Task\Task;
use Hhxsv5\LaravelS\Swoole\Timer\CronJob;
class TestCronJob extends CronJob
{
    protected $i = 0;
    // !!! The `interval` and `isImmediate` of cron job can be configured in two ways(pick one of two): one is to overload the corresponding method, and the other is to pass parameters when registering cron job.
    // --- Override the corresponding method to return the configuration: begin
    public function interval()
    {
        return 1000;// Run every 1000ms
    }
    public function isImmediate()
    {
        return false;// Whether to trigger `run` immediately after setting up
    }
    // --- Override the corresponding method to return the configuration: end
    public function run()
    {
        \Log::info(__METHOD__, ['start', $this->i, microtime(true)]);
        // do something
        // sleep(1); // Swoole < 2.1
        Coroutine::sleep(1); // Swoole>=2.1 Coroutine will be automatically created for run().
        $this->i++;
        \Log::info(__METHOD__, ['end', $this->i, microtime(true)]);

        if ($this->i >= 10) { // Run 10 times only
            \Log::info(__METHOD__, ['stop', $this->i, microtime(true)]);
            $this->stop(); // Stop this cron job, but it will run again after restart/reload.
            // Deliver task in CronJob, but NOT support callback finish() of task.
            // Note: Modify task_ipc_mode to 1 or 2 in config/laravels.php, see https://www.swoole.co.uk/docs/modules/swoole-server/configuration
            $ret = Task::deliver(new TestTask('task data'));
            var_dump($ret);
        }
        // The exceptions thrown here will be caught by the upper layer and recorded in the Swoole log. Developers need to try/catch manually.
    }
}

2.Register cron job.

// Register cron jobs in file "config/laravels.php"
[
    // ...
    'timer'          => [
        'enable' => true, // Enable Timer
        'jobs'   => [ // The list of cron job
            // Enable LaravelScheduleJob to run `php artisan schedule:run` every 1 minute, replace Linux Crontab
            // \Hhxsv5\LaravelS\Illuminate\LaravelScheduleJob::class,
            // Two ways to configure parameters:
            // [\App\Jobs\Timer\TestCronJob::class, [1000, true]], // Pass in parameters when registering
            \App\Jobs\Timer\TestCronJob::class, // Override the corresponding method to return the configuration
        ],
        'max_wait_time' => 5, // Max waiting time of reloading
        // Enable the global lock to ensure that only one instance starts the timer when deploying multiple instances. This feature depends on Redis, please see https://laravel.com/docs/7.x/redis
        'global_lock'     => false,
        'global_lock_key' => config('app.name', 'Laravel'),
    ],
    // ...
];

3.Note: it will launch multiple timers when build the server cluster, so you need to make sure that launch one timer only to avoid running repetitive task.

4.LaravelS v3.4.0 starts to support the hot restart [Reload] Timer process. After LaravelS receives the SIGUSR1 signal, it waits for max_wait_time(default 5) seconds to end the process, then the Manager process will pull up the Timer process again.

5.If you only need to use minute-level scheduled tasks, it is recommended to enable Hhxsv5\LaravelS\Illuminate\LaravelScheduleJob instead of Linux Crontab, so that you can follow the coding habits of Laravel task scheduling and configure Kernel.

// app/Console/Kernel.php
protected function schedule(Schedule $schedule)
{
    // runInBackground() will start a new child process to execute the task. This is asynchronous and will not affect the execution timing of other tasks.
    $schedule->command(TestCommand::class)->runInBackground()->everyMinute();
}

Automatically reload after modifying code

Via inotify, support Linux only.

1.Install inotify extension.

2.Turn on the switch in Settings.

3.Notice: Modify the file only in Linux to receive the file change events. It's recommended to use the latest Docker. Vagrant Solution.

Via fswatch, support OS X/Linux/Windows.

1.Install fswatch.

2.Run command in your project root directory.

# Watch current directory
./bin/fswatch
# Watch app directory
./bin/fswatch ./app

Via inotifywait, support Linux.

1.Install inotify-tools.

2.Run command in your project root directory.

# Watch current directory
./bin/inotify
# Watch app directory
./bin/inotify ./app

When the above methods does not work, the ultimate solution: set max_request=1,worker_num=1, so that Worker process will restart after processing a request. The performance of this method is very poor, so only development environment use.

Get the instance of SwooleServer in your project

/**
 * $swoole is the instance of `Swoole\WebSocket\Server` if enable WebSocket server, otherwise `Swoole\Http\Server`
 * @var \Swoole\WebSocket\Server|\Swoole\Http\Server $swoole
 */
$swoole = app('swoole');
var_dump($swoole->stats());
$swoole->push($fd, 'Push WebSocket message');

Use SwooleTable

1.Define Table, support multiple.

All defined tables will be created before Swoole starting.

// in file "config/laravels.php"
[
    // ...
    'swoole_tables'  => [
        // Scene：bind UserId & FD in WebSocket
        'ws' => [// The Key is table name, will add suffix "Table" to avoid naming conflicts. Here defined a table named "wsTable"
            'size'   => 102400,// The max size
            'column' => [// Define the columns
                ['name' => 'value', 'type' => \Swoole\Table::TYPE_INT, 'size' => 8],
            ],
        ],
        //...Define the other tables
    ],
    // ...
];

2.Access Table: all table instances will be bound on SwooleServer, access by app('swoole')->xxxTable.

namespace App\Services;
use Hhxsv5\LaravelS\Swoole\WebSocketHandlerInterface;
use Swoole\Http\Request;
use Swoole\WebSocket\Frame;
use Swoole\WebSocket\Server;
class WebSocketService implements WebSocketHandlerInterface
{
    /**@var \Swoole\Table $wsTable */
    private $wsTable;
    public function __construct()
    {
        $this->wsTable = app('swoole')->wsTable;
    }
    // Scene：bind UserId & FD in WebSocket
    public function onOpen(Server $server, Request $request)
    {
        // var_dump(app('swoole') === $server);// The same instance
        /**
         * Get the currently logged in user
         * This feature requires that the path to establish a WebSocket connection go through middleware such as Authenticate.
         * E.g:
         * Browser side: var ws = new WebSocket("ws://127.0.0.1:5200/ws");
         * Then the /ws route in Laravel needs to add the middleware like Authenticate.
         * Route::get('/ws', function () {
         *     // Respond any content with status code 200
         *     return 'websocket';
         * })->middleware(['auth']);
         */
        // $user = Auth::user();
        // $userId = $user ? $user->id : 0; // 0 means a guest user who is not logged in
        $userId = mt_rand(1000, 10000);
        // if (!$userId) {
        //     // Disconnect the connections of unlogged users
        //     $server->disconnect($request->fd);
        //     return;
        // }
        $this->wsTable->set('uid:' . $userId, ['value' => $request->fd]);// Bind map uid to fd
        $this->wsTable->set('fd:' . $request->fd, ['value' => $userId]);// Bind map fd to uid
        $server->push($request->fd, "Welcome to LaravelS #{$request->fd}");
    }
    public function onMessage(Server $server, Frame $frame)
    {
        // Broadcast
        foreach ($this->wsTable as $key => $row) {
            if (strpos($key, 'uid:') === 0 && $server->isEstablished($row['value'])) {
                $content = sprintf('Broadcast: new message "%s" from #%d', $frame->data, $frame->fd);
                $server->push($row['value'], $content);
            }
        }
    }
    public function onClose(Server $server, $fd, $reactorId)
    {
        $uid = $this->wsTable->get('fd:' . $fd);
        if ($uid !== false) {
            $this->wsTable->del('uid:' . $uid['value']); // Unbind uid map
        }
        $this->wsTable->del('fd:' . $fd);// Unbind fd map
        $server->push($fd, "Goodbye #{$fd}");
    }
}

Multi-port mixed protocol

For more information, please refer to Swoole Server AddListener

To make our main server support more protocols not just Http and WebSocket, we bring the feature multi-port mixed protocol of Swoole in LaravelS and name it Socket. Now, you can build TCP/UDP applications easily on top of Laravel.

Create Socket handler class, and extend Hhxsv5\LaravelS\Swoole\Socket\{TcpSocket|UdpSocket|Http|WebSocket}.

namespace App\Sockets;
use Hhxsv5\LaravelS\Swoole\Socket\TcpSocket;
use Swoole\Server;
class TestTcpSocket extends TcpSocket
{
    public function onConnect(Server $server, $fd, $reactorId)
    {
        \Log::info('New TCP connection', [$fd]);
        $server->send($fd, 'Welcome to LaravelS.');
    }
    public function onReceive(Server $server, $fd, $reactorId, $data)
    {
        \Log::info('Received data', [$fd, $data]);
        $server->send($fd, 'LaravelS: ' . $data);
        if ($data === "quit\r\n") {
            $server->send($fd, 'LaravelS: bye' . PHP_EOL);
            $server->close($fd);
        }
    }
    public function onClose(Server $server, $fd, $reactorId)
    {
        \Log::info('Close TCP connection', [$fd]);
        $server->send($fd, 'Goodbye');
    }
}

These Socket connections share the same worker processes with your HTTP/WebSocket connections. So it won't be a problem at all if you want to deliver tasks, use SwooleTable, even Laravel components such as DB, Eloquent and so on. At the same time, you can access Swoole\Server\Port object directly by member property swoolePort.

public function onReceive(Server $server, $fd, $reactorId, $data)
{
    $port = $this->swoolePort; // Get the `Swoole\Server\Port` object
}

namespace App\Http\Controllers;
class TestController extends Controller
{
    public function test()
    {
        /**@var \Swoole\Http\Server|\Swoole\WebSocket\Server $swoole */
        $swoole = app('swoole');
        // $swoole->ports: Traverse all Port objects, https://www.swoole.co.uk/docs/modules/swoole-server/multiple-ports
        $port = $swoole->ports[0]; // Get the `Swoole\Server\Port` object, $port[0] is the port of the main server
        foreach ($port->connections as $fd) { // Traverse all connections
            // $swoole->send($fd, 'Send tcp message');
            // if($swoole->isEstablished($fd)) {
            //     $swoole->push($fd, 'Send websocket message');
            // }
        }
    }
}

Register Sockets.

// Edit `config/laravels.php`
//...
'sockets' => [
    [
        'host'     => '127.0.0.1',
        'port'     => 5291,
        'type'     => SWOOLE_SOCK_TCP,// Socket type: SWOOLE_SOCK_TCP/SWOOLE_SOCK_TCP6/SWOOLE_SOCK_UDP/SWOOLE_SOCK_UDP6/SWOOLE_UNIX_DGRAM/SWOOLE_UNIX_STREAM
        'settings' => [// Swoole settings：https://www.swoole.co.uk/docs/modules/swoole-server-methods#swoole_server-addlistener
            'open_eof_check' => true,
            'package_eof'    => "\r\n",
        ],
        'handler'  => \App\Sockets\TestTcpSocket::class,
        'enable'   => true, // whether to enable, default true
    ],
],

About the heartbeat configuration, it can only be set on the main server and cannot be configured on Socket, but the Socket inherits the heartbeat configuration of the main server.

For TCP socket, onConnect and onClose events will be blocked when dispatch_mode of Swoole is 1/3, so if you want to unblock these two events please set dispatch_mode to 2/4/5.

'swoole' => [
    //...
    'dispatch_mode' => 2,
    //...
];

Test.

TCP: telnet 127.0.0.1 5291

UDP: [Linux] echo "Hello LaravelS" > /dev/udp/127.0.0.1/5292

Register example of other protocols.

• UDP
• Http
• WebSocket: The main server must turn on WebSocket, that is, set websocket.enable to true.

Coroutine

Swoole Coroutine

Warning: The order of code execution in the coroutine is out of order. The data of the request level should be isolated by the coroutine ID. However, there are many singleton and static attributes in Laravel/Lumen, the data between different requests will affect each other, it's Unsafe. For example, the database connection is a singleton, the same database connection shares the same PDO resource. This is fine in the synchronous blocking mode, but it does not work in the asynchronous coroutine mode. Each query needs to create different connections and maintain IO state of different connections, which requires a connection pool.

DO NOT enable the coroutine, only the custom process can use the coroutine.

Custom process

Support developers to create special work processes for monitoring, reporting, or other special tasks. Refer addProcess.

Create Proccess class, implements CustomProcessInterface.

namespace App\Processes;
use App\Tasks\TestTask;
use Hhxsv5\LaravelS\Swoole\Process\CustomProcessInterface;
use Hhxsv5\LaravelS\Swoole\Task\Task;
use Swoole\Coroutine;
use Swoole\Http\Server;
use Swoole\Process;
class TestProcess implements CustomProcessInterface
{
    /**
     * @var bool Quit tag for Reload updates
     */
    private static $quit = false;

    public static function callback(Server $swoole, Process $process)
    {
        // The callback method cannot exit. Once exited, Manager process will automatically create the process 
        while (!self::$quit) {
            \Log::info('Test process: running');
            // sleep(1); // Swoole < 2.1
            Coroutine::sleep(1); // Swoole>=2.1: Coroutine & Runtime will be automatically enabled for callback().
             // Deliver task in custom process, but NOT support callback finish() of task.
            // Note: Modify task_ipc_mode to 1 or 2 in config/laravels.php, see https://www.swoole.co.uk/docs/modules/swoole-server/configuration
            $ret = Task::deliver(new TestTask('task data'));
            var_dump($ret);
            // The upper layer will catch the exception thrown in the callback and record it in the Swoole log, and then this process will exit. The Manager process will re-create the process after 3 seconds, so developers need to try/catch to catch the exception by themselves to avoid frequent process creation.
            // throw new \Exception('an exception');
        }
    }
    // Requirements: LaravelS >= v3.4.0 & callback() must be async non-blocking program.
    public static function onReload(Server $swoole, Process $process)
    {
        // Stop the process...
        // Then end process
        \Log::info('Test process: reloading');
        self::$quit = true;
        // $process->exit(0); // Force exit process
    }
    // Requirements: LaravelS >= v3.7.4 & callback() must be async non-blocking program.
    public static function onStop(Server $swoole, Process $process)
    {
        // Stop the process...
        // Then end process
        \Log::info('Test process: stopping');
        self::$quit = true;
        // $process->exit(0); // Force exit process
    }
}

Register TestProcess.

// Edit `config/laravels.php`
// ...
'processes' => [
    'test' => [ // Key name is process name
        'class'    => \App\Processes\TestProcess::class,
        'redirect' => false, // Whether redirect stdin/stdout, true or false
        'pipe'     => 0,     // The type of pipeline, 0: no pipeline 1: SOCK_STREAM 2: SOCK_DGRAM
        'enable'   => true,  // Whether to enable, default true
        //'num'    => 3   // To create multiple processes of this class, default is 1
        //'queue'    => [ // Enable message queue as inter-process communication, configure empty array means use default parameters
        //    'msg_key'  => 0,    // The key of the message queue. Default: ftok(__FILE__, 1).
        //    'mode'     => 2,    // Communication mode, default is 2, which means contention mode
        //    'capacity' => 8192, // The length of a single message, is limited by the operating system kernel parameters. The default is 8192, and the maximum is 65536
        //],
        //'restart_interval' => 5, // After the process exits abnormally, how many seconds to wait before restarting the process, default 5 seconds
    ],
],

Note: The callback() cannot quit. If quit, the Manager process will re-create the process.

Example: Write data to a custom process.

// config/laravels.php
'processes' => [
    'test' => [
        'class'    => \App\Processes\TestProcess::class,
        'redirect' => false,
        'pipe'     => 1,
    ],
],

// app/Processes/TestProcess.php
public static function callback(Server $swoole, Process $process)
{
    while ($data = $process->read()) {
        \Log::info('TestProcess: read data', [$data]);
        $process->write('TestProcess: ' . $data);
    }
}

// app/Http/Controllers/TestController.php
public function testProcessWrite()
{
    /**@var \Swoole\Process $process */
    $process = app('swoole')->customProcesses['test'];
    $process->write('TestController: write data' . time());
    var_dump($process->read());
}

Common components

Apollo

LaravelS will pull the Apollo configuration and write it to the .env file when starting. At the same time, LaravelS will start the custom process apollo to monitor the configuration and automatically reload when the configuration changes.

Enable Apollo: add --enable-apollo and Apollo parameters to the startup parameters.

php bin/laravels start --enable-apollo --apollo-server=http://127.0.0.1:8080 --apollo-app-id=LARAVEL-S-TEST

Support hot updates(optional).

// Edit `config/laravels.php`
'processes' => Hhxsv5\LaravelS\Components\Apollo\Process::getDefinition(),

// When there are other custom process configurations
'processes' => [
    'test' => [
        'class'    => \App\Processes\TestProcess::class,
        'redirect' => false,
        'pipe'     => 1,
    ],
    // ...
] + Hhxsv5\LaravelS\Components\Apollo\Process::getDefinition(),

List of available parameters.

Parameter	Description	Default	Demo
apollo-server	Apollo server URL	-	--apollo-server=http://127.0.0.1:8080
apollo-app-id	Apollo APP ID	-	--apollo-app-id=LARAVEL-S-TEST
apollo-namespaces	The namespace to which the APP belongs, support specify the multiple	application	--apollo-namespaces=application --apollo-namespaces=env
apollo-cluster	The cluster to which the APP belongs	default	--apollo-cluster=default
apollo-client-ip	IP of current instance, can also be used for grayscale publishing	Local intranet IP	--apollo-client-ip=10.2.1.83
apollo-pull-timeout	Timeout time(seconds) when pulling configuration	5	--apollo-pull-timeout=5
apollo-backup-old-env	Whether to backup the old configuration file when updating the configuration file .env	false	--apollo-backup-old-env

Prometheus

Support Prometheus monitoring and alarm, Grafana visually view monitoring metrics. Please refer to Docker Compose for the environment construction of Prometheus and Grafana.

Require extension APCu >= 5.0.0, please install it by pecl install apcu.

Copy the configuration file prometheus.php to the config directory of your project. Modify the configuration as appropriate.

# Execute commands in the project root directory
cp vendor/hhxsv5/laravel-s/config/prometheus.php config/

If your project is Lumen, you also need to manually load the configuration $app->configure('prometheus'); in bootstrap/app.php.

Configure global middleware: Hhxsv5\LaravelS\Components\Prometheus\RequestMiddleware::class. In order to count the request time consumption as accurately as possible, RequestMiddleware must be the first global middleware, which needs to be placed in front of other middleware.

Register ServiceProvider: Hhxsv5\LaravelS\Components\Prometheus\ServiceProvider::class.

Configure the CollectorProcess in config/laravels.php to collect the metrics of Swoole Worker/Task/Timer processes regularly.

'processes' => Hhxsv5\LaravelS\Components\Prometheus\CollectorProcess::getDefinition(),

Create the route to output metrics.

use Hhxsv5\LaravelS\Components\Prometheus\Exporter;

Route::get('/actuator/prometheus', function () {
    $result = app(Exporter::class)->render();
    return response($result, 200, ['Content-Type' => Exporter::REDNER_MIME_TYPE]);
});

Complete the configuration of Prometheus and start it.

global:
  scrape_interval: 5s
  scrape_timeout: 5s
  evaluation_interval: 30s
scrape_configs:
- job_name: laravel-s-test
  honor_timestamps: true
  metrics_path: /actuator/prometheus
  scheme: http
  follow_redirects: true
  static_configs:
  - targets:
    - 127.0.0.1:5200 # The ip and port of the monitored service
# Dynamically discovered using one of the supported service-discovery mechanisms
# https://prometheus.io/docs/prometheus/latest/configuration/configuration/#scrape_config
# - job_name: laravels-eureka
#   honor_timestamps: true
#   scrape_interval: 5s
#   metrics_path: /actuator/prometheus
#   scheme: http
#   follow_redirects: true
  # eureka_sd_configs:
  # - server: http://127.0.0.1:8080/eureka
  #   follow_redirects: true
  #   refresh_interval: 5s

Start Grafana, then import panel json.

Other features

Configure Swoole events

Supported events:

Event	Interface	When happened
ServerStart	Hhxsv5\LaravelS\Swoole\Events\ServerStartInterface	Occurs when the Master process is starting, this event should not handle complex business logic, and can only do some simple work of initialization.
ServerStop	Hhxsv5\LaravelS\Swoole\Events\ServerStopInterface	Occurs when the server exits normally, CANNOT use async or coroutine related APIs in this event.
WorkerStart	Hhxsv5\LaravelS\Swoole\Events\WorkerStartInterface	Occurs after the Worker/Task process is started, and the Laravel initialization has been completed.
WorkerStop	Hhxsv5\LaravelS\Swoole\Events\WorkerStopInterface	Occurs after the Worker/Task process exits normally
WorkerError	Hhxsv5\LaravelS\Swoole\Events\WorkerErrorInterface	Occurs when an exception or fatal error occurs in the Worker/Task process

1.Create an event class to implement the corresponding interface.

namespace App\Events;
use Hhxsv5\LaravelS\Swoole\Events\ServerStartInterface;
use Swoole\Atomic;
use Swoole\Http\Server;
class ServerStartEvent implements ServerStartInterface
{
    public function __construct()
    {
    }
    public function handle(Server $server)
    {
        // Initialize a global counter (available across processes)
        $server->atomicCount = new Atomic(2233);

        // Invoked in controller: app('swoole')->atomicCount->get();
    }
}

namespace App\Events;
use Hhxsv5\LaravelS\Swoole\Events\WorkerStartInterface;
use Swoole\Http\Server;
class WorkerStartEvent implements WorkerStartInterface
{
    public function __construct()
    {
    }
    public function handle(Server $server, $workerId)
    {
        // Initialize a database connection pool
        // DatabaseConnectionPool::init();
    }
}

2.Configuration.

// Edit `config/laravels.php`
'event_handlers' => [
    'ServerStart' => [\App\Events\ServerStartEvent::class], // Trigger events in array order
    'WorkerStart' => [\App\Events\WorkerStartEvent::class],
],

Serverless

Alibaba Cloud Function Compute

Function Compute.

1.Modify bootstrap/app.php and set the storage directory. Because the project directory is read-only, the /tmp directory can only be read and written.

$app->useStoragePath(env('APP_STORAGE_PATH', '/tmp/storage'));

2.Create a shell script laravels_bootstrap and grant executable permission.

#!/usr/bin/env bash
set +e

# Create storage-related directories
mkdir -p /tmp/storage/app/public
mkdir -p /tmp/storage/framework/cache
mkdir -p /tmp/storage/framework/sessions
mkdir -p /tmp/storage/framework/testing
mkdir -p /tmp/storage/framework/views
mkdir -p /tmp/storage/logs

# Set the environment variable APP_STORAGE_PATH, please make sure it's the same as APP_STORAGE_PATH in .env
export APP_STORAGE_PATH=/tmp/storage

# Start LaravelS
php bin/laravels start

3.Configure template.xml.

ROSTemplateFormatVersion: '2015-09-01'
Transform: 'Aliyun::Serverless-2018-04-03'
Resources:
  laravel-s-demo:
    Type: 'Aliyun::Serverless::Service'
    Properties:
      Description: 'LaravelS Demo for Serverless'
    fc-laravel-s:
      Type: 'Aliyun::Serverless::Function'
      Properties:
        Handler: laravels.handler
        Runtime: custom
        MemorySize: 512
        Timeout: 30
        CodeUri: ./
        InstanceConcurrency: 10
        EnvironmentVariables:
          BOOTSTRAP_FILE: laravels_bootstrap

Important notices

Singleton Issue

Under FPM mode, singleton instances will be instantiated and recycled in every request, request start=>instantiate instance=>request end=>recycled instance.

Under Swoole Server, All singleton instances will be held in memory, different lifetime from FPM, request start=>instantiate instance=>request end=>do not recycle singleton instance. So need developer to maintain status of singleton instances in every request.

Common solutions:

Write a XxxCleaner class to clean up the singleton object state. This class implements the interface Hhxsv5\LaravelS\Illuminate\Cleaners\CleanerInterface and then registers it in cleaners of laravels.php.

Reset status of singleton instances by Middleware.

Re-register ServiceProvider, add XxxServiceProvider into register_providers of file laravels.php. So that reinitialize singleton instances in every request Refer.

Cleaners

Configuration cleaners.

Known issues

Known issues: a package of known issues and solutions.

Debugging method

Logging; if you want to output to the console, you can use stderr, Log::channel('stderr')->debug('debug message').

Laravel Dump Server(Laravel 5.7 has been integrated by default).

Read request

Read request by Illuminate\Http\Request Object, $_ENV is readable, $_SERVER is partially readable, CANNOT USE $_GET/$_POST/$_FILES/$_COOKIE/$_REQUEST/$_SESSION/$GLOBALS.

public function form(\Illuminate\Http\Request $request)
{
    $name = $request->input('name');
    $all = $request->all();
    $sessionId = $request->cookie('sessionId');
    $photo = $request->file('photo');
    // Call getContent() to get the raw POST body, instead of file_get_contents('php://input')
    $rawContent = $request->getContent();
    //...
}

Output response

Respond by Illuminate\Http\Response Object, compatible with echo/vardump()/print_r()，CANNOT USE functions dd()/exit()/die()/header()/setcookie()/http_response_code().

public function json()
{
    return response()->json(['time' => time()])->header('header1', 'value1')->withCookie('c1', 'v1');
}

Persistent connection

Singleton connection will be resident in memory, it is recommended to turn on persistent connection for better performance.

Database connection, it will reconnect automatically immediately after disconnect.

// config/database.php
'connections' => [
    'my_conn' => [
        'driver'    => 'mysql',
        'host'      => env('DB_MY_CONN_HOST', 'localhost'),
        'port'      => env('DB_MY_CONN_PORT', 3306),
        'database'  => env('DB_MY_CONN_DATABASE', 'forge'),
        'username'  => env('DB_MY_CONN_USERNAME', 'forge'),
        'password'  => env('DB_MY_CONN_PASSWORD', ''),
        'charset'   => 'utf8mb4',
        'collation' => 'utf8mb4_unicode_ci',
        'prefix'    => '',
        'strict'    => false,
        'options'   => [
            // Enable persistent connection
            \PDO::ATTR_PERSISTENT => true,
        ],
    ],
],

Redis connection, it won't reconnect automatically immediately after disconnect, and will throw an exception about lost connection, reconnect next time. You need to make sure that SELECT DB correctly before operating Redis every time.

// config/database.php
'redis' => [
    'client' => env('REDIS_CLIENT', 'phpredis'), // It is recommended to use phpredis for better performance.
    'default' => [
        'host'       => env('REDIS_HOST', 'localhost'),
        'password'   => env('REDIS_PASSWORD', null),
        'port'       => env('REDIS_PORT', 6379),
        'database'   => 0,
        'persistent' => true, // Enable persistent connection
    ],
],

About memory leaks

Avoid using global variables. If necessary, please clean or reset them manually.

Infinitely appending element into static/global variable will lead to OOM(Out of Memory).

class Test
{
    public static $array = [];
    public static $string = '';
}

// Controller
public function test(Request $req)
{
    // Out of Memory
    Test::$array[] = $req->input('param1');
    Test::$string .= $req->input('param2');
}

Memory leak detection method

Modify config/laravels.php: worker_num=1, max_request=1000000, remember to change it back after test;

Add routing /debug-memory-leak without route middleware to observe the memory changes of the Worker process;

Start LaravelS and request /debug-memory-leak until diff_mem is less than or equal to zero; if diff_mem is always greater than zero, it means that there may be a memory leak in Global Middleware or Laravel Framework;

After completing Step 3, alternately request the business routes and /debug-memory-leak (It is recommended to use ab/wrk to make a large number of requests for business routes), the initial increase in memory is normal. After a large number of requests for the business routes, if diff_mem is always greater than zero and curr_mem continues to increase, there is a high probability of memory leak; If curr_mem always changes within a certain range and does not continue to increase, there is a low probability of memory leak.

If you still can't solve it, max_request is the last guarantee.

Linux kernel parameter adjustment

Linux kernel parameter adjustment

Pressure test

Pressure test

Alternatives

• swooletw/laravel-swoole

Sponsor

PayPal

BTC

Gitee

License

MIT

Author: hhxsv5
Source Code: https://github.com/hhxsv5/laravel-s
License: MIT License

#php #laravel 

LaravelS: Glue for using Swoole in Laravel Or Lumen.

🚀 LaravelS is an out-of-the-box adapter between Swoole and Laravel/Lumen.

Please Watch this repository to get the latest updates.

中文文档

Table of Contents

• Features
• Benchmark
• Requirements
• Install
• Run
• Deploy
• Cooperate with Nginx (Recommended)
• Cooperate with Apache
• Enable WebSocket server
• Listen events
  • System events
  • Customized asynchronous events
• Asynchronous task queue
• Millisecond cron job
• Automatically reload after modifying code
• Get the instance of SwooleServer in your project
• Use SwooleTable
• Multi-port mixed protocol
• Coroutine
• Custom process
• Common components
  • Apollo
  • Prometheus
• Other features
  • Configure Swoole events
  • Serverless
• Important notices
• Users and cases
• Alternatives
• Sponsor
• License

Features

Built-in Http/WebSocket server

Multi-port mixed protocol

Custom process

Memory resident

Asynchronous event listening

Asynchronous task queue

Millisecond cron job

Common Components

Gracefully reload

Automatically reload after modifying code

Support Laravel/Lumen both, good compatibility

Simple & Out of the box

Benchmark

Which is the fastest web framework?

TechEmpower Framework Benchmarks

Requirements

Dependency	Requirement
PHP	>= 5.5.9 Recommend PHP7+
Swoole	>= 1.7.19 No longer support PHP5 since 2.0.12 Recommend 4.5.0+
Laravel/Lumen	>= 5.1 Recommend 8.0+

Install

1.Require package via Composer(packagist).

composer require "hhxsv5/laravel-s:~3.7.0" -vvv
# Make sure that your composer.lock file is under the VCS

2.Register service provider(pick one of two).

Laravel: in config/app.php file, Laravel 5.5+ supports package discovery automatically, you should skip this step

'providers' => [
    //...
    Hhxsv5\LaravelS\Illuminate\LaravelSServiceProvider::class,
],

Lumen: in bootstrap/app.php file

$app->register(Hhxsv5\LaravelS\Illuminate\LaravelSServiceProvider::class);

3.Publish configuration and binaries.

After upgrading LaravelS, you need to republish; click here to see the change notes of each version.

php artisan laravels publish
# Configuration: config/laravels.php
# Binary: bin/laravels bin/fswatch bin/inotify

4.Change config/laravels.php: listen_ip, listen_port, refer Settings.

5.Performance tuning

Adjust kernel parameters

Number of Workers: LaravelS uses Swoole's Synchronous IO mode, the larger the worker_num setting, the better the concurrency performance, but it will cause more memory usage and process switching overhead. If one request takes 100ms, in order to provide 1000QPS concurrency, at least 100 Worker processes need to be configured. The calculation method is: worker_num = 1000QPS/(1s/1ms) = 100, so incremental pressure testing is needed to calculate the best worker_num.

Number of Task Workers

Run

Please read the notices carefully before running, Important notices(IMPORTANT).

• Commands: php bin/laravels {start|stop|restart|reload|info|help}.

Command	Description
start	Start LaravelS, list the processes by "ps -ef|grep laravels"
stop	Stop LaravelS, and trigger the method onStop of Custom process
restart	Restart LaravelS: Stop gracefully before starting; The service is unavailable until startup is complete
reload	Reload all Task/Worker/Timer processes which contain your business codes, and trigger the method onReload of Custom process, CANNOT reload Master/Manger processes. After modifying config/laravels.php, you only have to call restart to restart
info	Display component version information
help	Display help information

• Boot options for the commands start and restart.

Option	Description
-d|--daemonize	Run as a daemon, this option will override the swoole.daemonize setting in laravels.php
-e|--env	The environment the command should run under, such as --env=testing will use the configuration file .env.testing firstly, this feature requires Laravel 5.2+
-i|--ignore	Ignore checking PID file of Master process
-x|--x-version	The version(branch) of the current project, stored in $_ENV/$_SERVER, access via $_ENV['X_VERSION'] $_SERVER['X_VERSION'] $request->server->get('X_VERSION')

• Runtime files: start will automatically execute php artisan laravels config and generate these files, developers generally don't need to pay attention to them, it's recommended to add them to .gitignore.

File	Description
storage/laravels.conf	LaravelS's runtime configuration file
storage/laravels.pid	PID file of Master process
storage/laravels-timer-process.pid	PID file of the Timer process
storage/laravels-custom-processes.pid	PID file of all custom processes

Deploy

It is recommended to supervise the main process through Supervisord, the premise is without option -d and to set swoole.daemonize to false.

[program:laravel-s-test]
directory=/var/www/laravel-s-test
command=/usr/local/bin/php bin/laravels start -i
numprocs=1
autostart=true
autorestart=true
startretries=3
user=www-data
redirect_stderr=true
stdout_logfile=/var/log/supervisor/%(program_name)s.log

Cooperate with Nginx (Recommended)

Demo.

gzip on;
gzip_min_length 1024;
gzip_comp_level 2;
gzip_types text/plain text/css text/javascript application/json application/javascript application/x-javascript application/xml application/x-httpd-php image/jpeg image/gif image/png font/ttf font/otf image/svg+xml;
gzip_vary on;
gzip_disable "msie6";
upstream swoole {
    # Connect IP:Port
    server 127.0.0.1:5200 weight=5 max_fails=3 fail_timeout=30s;
    # Connect UnixSocket Stream file, tips: put the socket file in the /dev/shm directory to get better performance
    #server unix:/yourpath/laravel-s-test/storage/laravels.sock weight=5 max_fails=3 fail_timeout=30s;
    #server 192.168.1.1:5200 weight=3 max_fails=3 fail_timeout=30s;
    #server 192.168.1.2:5200 backup;
    keepalive 16;
}
server {
    listen 80;
    # Don't forget to bind the host
    server_name laravels.com;
    root /yourpath/laravel-s-test/public;
    access_log /yourpath/log/nginx/$server_name.access.log  main;
    autoindex off;
    index index.html index.htm;
    # Nginx handles the static resources(recommend enabling gzip), LaravelS handles the dynamic resource.
    location / {
        try_files $uri @laravels;
    }
    # Response 404 directly when request the PHP file, to avoid exposing public/*.php
    #location ~* \.php$ {
    #    return 404;
    #}
    location @laravels {
        # proxy_connect_timeout 60s;
        # proxy_send_timeout 60s;
        # proxy_read_timeout 120s;
        proxy_http_version 1.1;
        proxy_set_header Connection "";
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Real-PORT $remote_port;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_set_header Scheme $scheme;
        proxy_set_header Server-Protocol $server_protocol;
        proxy_set_header Server-Name $server_name;
        proxy_set_header Server-Addr $server_addr;
        proxy_set_header Server-Port $server_port;
        # "swoole" is the upstream
        proxy_pass http://swoole;
    }
}

Cooperate with Apache

LoadModule proxy_module /yourpath/modules/mod_proxy.so
LoadModule proxy_balancer_module /yourpath/modules/mod_proxy_balancer.so
LoadModule lbmethod_byrequests_module /yourpath/modules/mod_lbmethod_byrequests.so
LoadModule proxy_http_module /yourpath/modules/mod_proxy_http.so
LoadModule slotmem_shm_module /yourpath/modules/mod_slotmem_shm.so
LoadModule rewrite_module /yourpath/modules/mod_rewrite.so
LoadModule remoteip_module /yourpath/modules/mod_remoteip.so
LoadModule deflate_module /yourpath/modules/mod_deflate.so

<IfModule deflate_module>
    SetOutputFilter DEFLATE
    DeflateCompressionLevel 2
    AddOutputFilterByType DEFLATE text/html text/plain text/css text/javascript application/json application/javascript application/x-javascript application/xml application/x-httpd-php image/jpeg image/gif image/png font/ttf font/otf image/svg+xml
</IfModule>

<VirtualHost *:80>
    # Don't forget to bind the host
    ServerName www.laravels.com
    ServerAdmin hhxsv5@sina.com

    DocumentRoot /yourpath/laravel-s-test/public;
    DirectoryIndex index.html index.htm
    <Directory "/">
        AllowOverride None
        Require all granted
    </Directory>

    RemoteIPHeader X-Forwarded-For

    ProxyRequests Off
    ProxyPreserveHost On
    <Proxy balancer://laravels>  
        BalancerMember http://192.168.1.1:5200 loadfactor=7
        #BalancerMember http://192.168.1.2:5200 loadfactor=3
        #BalancerMember http://192.168.1.3:5200 loadfactor=1 status=+H
        ProxySet lbmethod=byrequests
    </Proxy>
    #ProxyPass / balancer://laravels/
    #ProxyPassReverse / balancer://laravels/

    # Apache handles the static resources, LaravelS handles the dynamic resource.
    RewriteEngine On
    RewriteCond %{DOCUMENT_ROOT}%{REQUEST_FILENAME} !-d
    RewriteCond %{DOCUMENT_ROOT}%{REQUEST_FILENAME} !-f
    RewriteRule ^/(.*)$ balancer://laravels%{REQUEST_URI} [P,L]

    ErrorLog ${APACHE_LOG_DIR}/www.laravels.com.error.log
    CustomLog ${APACHE_LOG_DIR}/www.laravels.com.access.log combined
</VirtualHost>

Enable WebSocket server

The Listening address of WebSocket Sever is the same as Http Server.

1.Create WebSocket Handler class, and implement interface WebSocketHandlerInterface.The instant is automatically instantiated when start, you do not need to manually create it.

namespace App\Services;
use Hhxsv5\LaravelS\Swoole\WebSocketHandlerInterface;
use Swoole\Http\Request;
use Swoole\Http\Response;
use Swoole\WebSocket\Frame;
use Swoole\WebSocket\Server;
/**
 * @see https://www.swoole.co.uk/docs/modules/swoole-websocket-server
 */
class WebSocketService implements WebSocketHandlerInterface
{
    // Declare constructor without parameters
    public function __construct()
    {
    }
    // public function onHandShake(Request $request, Response $response)
    // {
           // Custom handshake: https://www.swoole.co.uk/docs/modules/swoole-websocket-server-on-handshake
           // The onOpen event will be triggered automatically after a successful handshake
    // }
    public function onOpen(Server $server, Request $request)
    {
        // Before the onOpen event is triggered, the HTTP request to establish the WebSocket has passed the Laravel route,
        // so Laravel's Request, Auth information are readable, Session is readable and writable, but only in the onOpen event.
        // \Log::info('New WebSocket connection', [$request->fd, request()->all(), session()->getId(), session('xxx'), session(['yyy' => time()])]);
        // The exceptions thrown here will be caught by the upper layer and recorded in the Swoole log. Developers need to try/catch manually.
        $server->push($request->fd, 'Welcome to LaravelS');
    }
    public function onMessage(Server $server, Frame $frame)
    {
        // \Log::info('Received message', [$frame->fd, $frame->data, $frame->opcode, $frame->finish]);
        // The exceptions thrown here will be caught by the upper layer and recorded in the Swoole log. Developers need to try/catch manually.
        $server->push($frame->fd, date('Y-m-d H:i:s'));
    }
    public function onClose(Server $server, $fd, $reactorId)
    {
        // The exceptions thrown here will be caught by the upper layer and recorded in the Swoole log. Developers need to try/catch manually.
    }
}

2.Modify config/laravels.php.

// ...
'websocket'      => [
    'enable'  => true, // Note: set enable to true
    'handler' => \App\Services\WebSocketService::class,
],
'swoole'         => [
    //...
    // Must set dispatch_mode in (2, 4, 5), see https://www.swoole.co.uk/docs/modules/swoole-server/configuration
    'dispatch_mode' => 2,
    //...
],
// ...

3.Use SwooleTable to bind FD & UserId, optional, Swoole Table Demo. Also you can use the other global storage services, like Redis/Memcached/MySQL, but be careful that FD will be possible conflicting between multiple Swoole Servers.

4.Cooperate with Nginx (Recommended)

Refer WebSocket Proxy

map $http_upgrade $connection_upgrade {
    default upgrade;
    ''      close;
}
upstream swoole {
    # Connect IP:Port
    server 127.0.0.1:5200 weight=5 max_fails=3 fail_timeout=30s;
    # Connect UnixSocket Stream file, tips: put the socket file in the /dev/shm directory to get better performance
    #server unix:/yourpath/laravel-s-test/storage/laravels.sock weight=5 max_fails=3 fail_timeout=30s;
    #server 192.168.1.1:5200 weight=3 max_fails=3 fail_timeout=30s;
    #server 192.168.1.2:5200 backup;
    keepalive 16;
}
server {
    listen 80;
    # Don't forget to bind the host
    server_name laravels.com;
    root /yourpath/laravel-s-test/public;
    access_log /yourpath/log/nginx/$server_name.access.log  main;
    autoindex off;
    index index.html index.htm;
    # Nginx handles the static resources(recommend enabling gzip), LaravelS handles the dynamic resource.
    location / {
        try_files $uri @laravels;
    }
    # Response 404 directly when request the PHP file, to avoid exposing public/*.php
    #location ~* \.php$ {
    #    return 404;
    #}
    # Http and WebSocket are concomitant, Nginx identifies them by "location"
    # !!! The location of WebSocket is "/ws"
    # Javascript: var ws = new WebSocket("ws://laravels.com/ws");
    location =/ws {
        # proxy_connect_timeout 60s;
        # proxy_send_timeout 60s;
        # proxy_read_timeout: Nginx will close the connection if the proxied server does not send data to Nginx in 60 seconds; At the same time, this close behavior is also affected by heartbeat setting of Swoole.
        # proxy_read_timeout 60s;
        proxy_http_version 1.1;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Real-PORT $remote_port;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_set_header Scheme $scheme;
        proxy_set_header Server-Protocol $server_protocol;
        proxy_set_header Server-Name $server_name;
        proxy_set_header Server-Addr $server_addr;
        proxy_set_header Server-Port $server_port;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        proxy_pass http://swoole;
    }
    location @laravels {
        # proxy_connect_timeout 60s;
        # proxy_send_timeout 60s;
        # proxy_read_timeout 60s;
        proxy_http_version 1.1;
        proxy_set_header Connection "";
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Real-PORT $remote_port;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_set_header Scheme $scheme;
        proxy_set_header Server-Protocol $server_protocol;
        proxy_set_header Server-Name $server_name;
        proxy_set_header Server-Addr $server_addr;
        proxy_set_header Server-Port $server_port;
        proxy_pass http://swoole;
    }
}

5.Heartbeat setting

Heartbeat setting of Swoole

// config/laravels.php
'swoole' => [
    //...
    // All connections are traversed every 60 seconds. If a connection does not send any data to the server within 600 seconds, the connection will be forced to close.
    'heartbeat_idle_time'      => 600,
    'heartbeat_check_interval' => 60,
    //...
],

Proxy read timeout of Nginx

# Nginx will close the connection if the proxied server does not send data to Nginx in 60 seconds
proxy_read_timeout 60s;

6.Push data in controller

namespace App\Http\Controllers;
class TestController extends Controller
{
    public function push()
    {
        $fd = 1; // Find fd by userId from a map [userId=>fd].
        /**@var \Swoole\WebSocket\Server $swoole */
        $swoole = app('swoole');
        $success = $swoole->push($fd, 'Push data to fd#1 in Controller');
        var_dump($success);
    }
}

Listen events

System events

Usually, you can reset/destroy some global/static variables, or change the current Request/Response object.

laravels.received_request After LaravelS parsed Swoole\Http\Request to Illuminate\Http\Request, before Laravel's Kernel handles this request.

// Edit file `app/Providers/EventServiceProvider.php`, add the following code into method `boot`
// If no variable $events, you can also call Facade \Event::listen(). 
$events->listen('laravels.received_request', function (\Illuminate\Http\Request $req, $app) {
    $req->query->set('get_key', 'hhxsv5');// Change query of request
    $req->request->set('post_key', 'hhxsv5'); // Change post of request
});

laravels.generated_response After Laravel's Kernel handled the request, before LaravelS parses Illuminate\Http\Response to Swoole\Http\Response.

// Edit file `app/Providers/EventServiceProvider.php`, add the following code into method `boot`
// If no variable $events, you can also call Facade \Event::listen(). 
$events->listen('laravels.generated_response', function (\Illuminate\Http\Request $req, \Symfony\Component\HttpFoundation\Response $rsp, $app) {
    $rsp->headers->set('header-key', 'hhxsv5');// Change header of response
});

Customized asynchronous events

This feature depends on AsyncTask of Swoole, your need to set swoole.task_worker_num in config/laravels.php firstly. The performance of asynchronous event processing is influenced by number of Swoole task process, you need to set task_worker_num appropriately.

1.Create event class.

use Hhxsv5\LaravelS\Swoole\Task\Event;
class TestEvent extends Event
{
    protected $listeners = [
        // Listener list
        TestListener1::class,
        // TestListener2::class,
    ];
    private $data;
    public function __construct($data)
    {
        $this->data = $data;
    }
    public function getData()
    {
        return $this->data;
    }
}

2.Create listener class.

use Hhxsv5\LaravelS\Swoole\Task\Task;
use Hhxsv5\LaravelS\Swoole\Task\Listener;
class TestListener1 extends Listener
{
    /**
     * @var TestEvent
     */
    protected $event;
    
    public function handle()
    {
        \Log::info(__CLASS__ . ':handle start', [$this->event->getData()]);
        sleep(2);// Simulate the slow codes
        // Deliver task in CronJob, but NOT support callback finish() of task.
        // Note: Modify task_ipc_mode to 1 or 2 in config/laravels.php, see https://www.swoole.co.uk/docs/modules/swoole-server/configuration
        $ret = Task::deliver(new TestTask('task data'));
        var_dump($ret);
        // The exceptions thrown here will be caught by the upper layer and recorded in the Swoole log. Developers need to try/catch manually.
    }
}

3.Fire event.

// Create instance of event and fire it, "fire" is asynchronous.
use Hhxsv5\LaravelS\Swoole\Task\Event;
$event = new TestEvent('event data');
// $event->delay(10); // Delay 10 seconds to fire event
// $event->setTries(3); // When an error occurs, try 3 times in total
$success = Event::fire($event);
var_dump($success);// Return true if sucess, otherwise false

Asynchronous task queue

This feature depends on AsyncTask of Swoole, your need to set swoole.task_worker_num in config/laravels.php firstly. The performance of task processing is influenced by number of Swoole task process, you need to set task_worker_num appropriately.

1.Create task class.

use Hhxsv5\LaravelS\Swoole\Task\Task;
class TestTask extends Task
{
    private $data;
    private $result;
    public function __construct($data)
    {
        $this->data = $data;
    }
    // The logic of task handling, run in task process, CAN NOT deliver task
    public function handle()
    {
        \Log::info(__CLASS__ . ':handle start', [$this->data]);
        sleep(2);// Simulate the slow codes
        // The exceptions thrown here will be caught by the upper layer and recorded in the Swoole log. Developers need to try/catch manually.
        $this->result = 'the result of ' . $this->data;
    }
    // Optional, finish event, the logic of after task handling, run in worker process, CAN deliver task 
    public function finish()
    {
        \Log::info(__CLASS__ . ':finish start', [$this->result]);
        Task::deliver(new TestTask2('task2 data')); // Deliver the other task
    }
}

2.Deliver task.

// Create instance of TestTask and deliver it, "deliver" is asynchronous.
use Hhxsv5\LaravelS\Swoole\Task\Task;
$task = new TestTask('task data');
// $task->delay(3);// delay 3 seconds to deliver task
// $task->setTries(3); // When an error occurs, try 3 times in total
$ret = Task::deliver($task);
var_dump($ret);// Return true if sucess, otherwise false

Millisecond cron job

Wrapper cron job base on Swoole's Millisecond Timer, replace Linux Crontab.

1.Create cron job class.

namespace App\Jobs\Timer;
use App\Tasks\TestTask;
use Swoole\Coroutine;
use Hhxsv5\LaravelS\Swoole\Task\Task;
use Hhxsv5\LaravelS\Swoole\Timer\CronJob;
class TestCronJob extends CronJob
{
    protected $i = 0;
    // !!! The `interval` and `isImmediate` of cron job can be configured in two ways(pick one of two): one is to overload the corresponding method, and the other is to pass parameters when registering cron job.
    // --- Override the corresponding method to return the configuration: begin
    public function interval()
    {
        return 1000;// Run every 1000ms
    }
    public function isImmediate()
    {
        return false;// Whether to trigger `run` immediately after setting up
    }
    // --- Override the corresponding method to return the configuration: end
    public function run()
    {
        \Log::info(__METHOD__, ['start', $this->i, microtime(true)]);
        // do something
        // sleep(1); // Swoole < 2.1
        Coroutine::sleep(1); // Swoole>=2.1 Coroutine will be automatically created for run().
        $this->i++;
        \Log::info(__METHOD__, ['end', $this->i, microtime(true)]);

        if ($this->i >= 10) { // Run 10 times only
            \Log::info(__METHOD__, ['stop', $this->i, microtime(true)]);
            $this->stop(); // Stop this cron job, but it will run again after restart/reload.
            // Deliver task in CronJob, but NOT support callback finish() of task.
            // Note: Modify task_ipc_mode to 1 or 2 in config/laravels.php, see https://www.swoole.co.uk/docs/modules/swoole-server/configuration
            $ret = Task::deliver(new TestTask('task data'));
            var_dump($ret);
        }
        // The exceptions thrown here will be caught by the upper layer and recorded in the Swoole log. Developers need to try/catch manually.
    }
}

2.Register cron job.

// Register cron jobs in file "config/laravels.php"
[
    // ...
    'timer'          => [
        'enable' => true, // Enable Timer
        'jobs'   => [ // The list of cron job
            // Enable LaravelScheduleJob to run `php artisan schedule:run` every 1 minute, replace Linux Crontab
            // \Hhxsv5\LaravelS\Illuminate\LaravelScheduleJob::class,
            // Two ways to configure parameters:
            // [\App\Jobs\Timer\TestCronJob::class, [1000, true]], // Pass in parameters when registering
            \App\Jobs\Timer\TestCronJob::class, // Override the corresponding method to return the configuration
        ],
        'max_wait_time' => 5, // Max waiting time of reloading
        // Enable the global lock to ensure that only one instance starts the timer when deploying multiple instances. This feature depends on Redis, please see https://laravel.com/docs/7.x/redis
        'global_lock'     => false,
        'global_lock_key' => config('app.name', 'Laravel'),
    ],
    // ...
];

3.Note: it will launch multiple timers when build the server cluster, so you need to make sure that launch one timer only to avoid running repetitive task.

4.LaravelS v3.4.0 starts to support the hot restart [Reload] Timer process. After LaravelS receives the SIGUSR1 signal, it waits for max_wait_time(default 5) seconds to end the process, then the Manager process will pull up the Timer process again.

5.If you only need to use minute-level scheduled tasks, it is recommended to enable Hhxsv5\LaravelS\Illuminate\LaravelScheduleJob instead of Linux Crontab, so that you can follow the coding habits of Laravel task scheduling and configure Kernel.

// app/Console/Kernel.php
protected function schedule(Schedule $schedule)
{
    // runInBackground() will start a new child process to execute the task. This is asynchronous and will not affect the execution timing of other tasks.
    $schedule->command(TestCommand::class)->runInBackground()->everyMinute();
}

Automatically reload after modifying code

Via inotify, support Linux only.

1.Install inotify extension.

2.Turn on the switch in Settings.

3.Notice: Modify the file only in Linux to receive the file change events. It's recommended to use the latest Docker. Vagrant Solution.

Via fswatch, support OS X/Linux/Windows.

1.Install fswatch.

2.Run command in your project root directory.

# Watch current directory
./bin/fswatch
# Watch app directory
./bin/fswatch ./app

Via inotifywait, support Linux.

1.Install inotify-tools.

2.Run command in your project root directory.

# Watch current directory
./bin/inotify
# Watch app directory
./bin/inotify ./app

When the above methods does not work, the ultimate solution: set max_request=1,worker_num=1, so that Worker process will restart after processing a request. The performance of this method is very poor, so only development environment use.

Get the instance of SwooleServer in your project

/**
 * $swoole is the instance of `Swoole\WebSocket\Server` if enable WebSocket server, otherwise `Swoole\Http\Server`
 * @var \Swoole\WebSocket\Server|\Swoole\Http\Server $swoole
 */
$swoole = app('swoole');
var_dump($swoole->stats());
$swoole->push($fd, 'Push WebSocket message');

Use SwooleTable

1.Define Table, support multiple.

All defined tables will be created before Swoole starting.

// in file "config/laravels.php"
[
    // ...
    'swoole_tables'  => [
        // Scene：bind UserId & FD in WebSocket
        'ws' => [// The Key is table name, will add suffix "Table" to avoid naming conflicts. Here defined a table named "wsTable"
            'size'   => 102400,// The max size
            'column' => [// Define the columns
                ['name' => 'value', 'type' => \Swoole\Table::TYPE_INT, 'size' => 8],
            ],
        ],
        //...Define the other tables
    ],
    // ...
];

2.Access Table: all table instances will be bound on SwooleServer, access by app('swoole')->xxxTable.

namespace App\Services;
use Hhxsv5\LaravelS\Swoole\WebSocketHandlerInterface;
use Swoole\Http\Request;
use Swoole\WebSocket\Frame;
use Swoole\WebSocket\Server;
class WebSocketService implements WebSocketHandlerInterface
{
    /**@var \Swoole\Table $wsTable */
    private $wsTable;
    public function __construct()
    {
        $this->wsTable = app('swoole')->wsTable;
    }
    // Scene：bind UserId & FD in WebSocket
    public function onOpen(Server $server, Request $request)
    {
        // var_dump(app('swoole') === $server);// The same instance
        /**
         * Get the currently logged in user
         * This feature requires that the path to establish a WebSocket connection go through middleware such as Authenticate.
         * E.g:
         * Browser side: var ws = new WebSocket("ws://127.0.0.1:5200/ws");
         * Then the /ws route in Laravel needs to add the middleware like Authenticate.
         * Route::get('/ws', function () {
         *     // Respond any content with status code 200
         *     return 'websocket';
         * })->middleware(['auth']);
         */
        // $user = Auth::user();
        // $userId = $user ? $user->id : 0; // 0 means a guest user who is not logged in
        $userId = mt_rand(1000, 10000);
        // if (!$userId) {
        //     // Disconnect the connections of unlogged users
        //     $server->disconnect($request->fd);
        //     return;
        // }
        $this->wsTable->set('uid:' . $userId, ['value' => $request->fd]);// Bind map uid to fd
        $this->wsTable->set('fd:' . $request->fd, ['value' => $userId]);// Bind map fd to uid
        $server->push($request->fd, "Welcome to LaravelS #{$request->fd}");
    }
    public function onMessage(Server $server, Frame $frame)
    {
        // Broadcast
        foreach ($this->wsTable as $key => $row) {
            if (strpos($key, 'uid:') === 0 && $server->isEstablished($row['value'])) {
                $content = sprintf('Broadcast: new message "%s" from #%d', $frame->data, $frame->fd);
                $server->push($row['value'], $content);
            }
        }
    }
    public function onClose(Server $server, $fd, $reactorId)
    {
        $uid = $this->wsTable->get('fd:' . $fd);
        if ($uid !== false) {
            $this->wsTable->del('uid:' . $uid['value']); // Unbind uid map
        }
        $this->wsTable->del('fd:' . $fd);// Unbind fd map
        $server->push($fd, "Goodbye #{$fd}");
    }
}

Multi-port mixed protocol

For more information, please refer to Swoole Server AddListener

To make our main server support more protocols not just Http and WebSocket, we bring the feature multi-port mixed protocol of Swoole in LaravelS and name it Socket. Now, you can build TCP/UDP applications easily on top of Laravel.

Create Socket handler class, and extend Hhxsv5\LaravelS\Swoole\Socket\{TcpSocket|UdpSocket|Http|WebSocket}.

namespace App\Sockets;
use Hhxsv5\LaravelS\Swoole\Socket\TcpSocket;
use Swoole\Server;
class TestTcpSocket extends TcpSocket
{
    public function onConnect(Server $server, $fd, $reactorId)
    {
        \Log::info('New TCP connection', [$fd]);
        $server->send($fd, 'Welcome to LaravelS.');
    }
    public function onReceive(Server $server, $fd, $reactorId, $data)
    {
        \Log::info('Received data', [$fd, $data]);
        $server->send($fd, 'LaravelS: ' . $data);
        if ($data === "quit\r\n") {
            $server->send($fd, 'LaravelS: bye' . PHP_EOL);
            $server->close($fd);
        }
    }
    public function onClose(Server $server, $fd, $reactorId)
    {
        \Log::info('Close TCP connection', [$fd]);
        $server->send($fd, 'Goodbye');
    }
}

These Socket connections share the same worker processes with your HTTP/WebSocket connections. So it won't be a problem at all if you want to deliver tasks, use SwooleTable, even Laravel components such as DB, Eloquent and so on. At the same time, you can access Swoole\Server\Port object directly by member property swoolePort.

public function onReceive(Server $server, $fd, $reactorId, $data)
{
    $port = $this->swoolePort; // Get the `Swoole\Server\Port` object
}

namespace App\Http\Controllers;
class TestController extends Controller
{
    public function test()
    {
        /**@var \Swoole\Http\Server|\Swoole\WebSocket\Server $swoole */
        $swoole = app('swoole');
        // $swoole->ports: Traverse all Port objects, https://www.swoole.co.uk/docs/modules/swoole-server/multiple-ports
        $port = $swoole->ports[0]; // Get the `Swoole\Server\Port` object, $port[0] is the port of the main server
        foreach ($port->connections as $fd) { // Traverse all connections
            // $swoole->send($fd, 'Send tcp message');
            // if($swoole->isEstablished($fd)) {
            //     $swoole->push($fd, 'Send websocket message');
            // }
        }
    }
}

Register Sockets.

// Edit `config/laravels.php`
//...
'sockets' => [
    [
        'host'     => '127.0.0.1',
        'port'     => 5291,
        'type'     => SWOOLE_SOCK_TCP,// Socket type: SWOOLE_SOCK_TCP/SWOOLE_SOCK_TCP6/SWOOLE_SOCK_UDP/SWOOLE_SOCK_UDP6/SWOOLE_UNIX_DGRAM/SWOOLE_UNIX_STREAM
        'settings' => [// Swoole settings：https://www.swoole.co.uk/docs/modules/swoole-server-methods#swoole_server-addlistener
            'open_eof_check' => true,
            'package_eof'    => "\r\n",
        ],
        'handler'  => \App\Sockets\TestTcpSocket::class,
        'enable'   => true, // whether to enable, default true
    ],
],

About the heartbeat configuration, it can only be set on the main server and cannot be configured on Socket, but the Socket inherits the heartbeat configuration of the main server.

For TCP socket, onConnect and onClose events will be blocked when dispatch_mode of Swoole is 1/3, so if you want to unblock these two events please set dispatch_mode to 2/4/5.

'swoole' => [
    //...
    'dispatch_mode' => 2,
    //...
];

Test.

TCP: telnet 127.0.0.1 5291

UDP: [Linux] echo "Hello LaravelS" > /dev/udp/127.0.0.1/5292

Register example of other protocols.

• UDP

'sockets' => [
    [
        'host'     => '0.0.0.0',
        'port'     => 5292,
        'type'     => SWOOLE_SOCK_UDP,
        'settings' => [
            'open_eof_check' => true,
            'package_eof'    => "\r\n",
        ],
        'handler'  => \App\Sockets\TestUdpSocket::class,
    ],
],

• Http

'sockets' => [
    [
        'host'     => '0.0.0.0',
        'port'     => 5293,
        'type'     => SWOOLE_SOCK_TCP,
        'settings' => [
            'open_http_protocol' => true,
        ],
        'handler'  => \App\Sockets\TestHttp::class,
    ],
],

• WebSocket: The main server must turn on WebSocket, that is, set websocket.enable to true.

'sockets' => [
    [
        'host'     => '0.0.0.0',
        'port'     => 5294,
        'type'     => SWOOLE_SOCK_TCP,
        'settings' => [
            'open_http_protocol'      => true,
            'open_websocket_protocol' => true,
        ],
        'handler'  => \App\Sockets\TestWebSocket::class,
    ],
],

Coroutine

Swoole Coroutine

Warning: The order of code execution in the coroutine is out of order. The data of the request level should be isolated by the coroutine ID. However, there are many singleton and static attributes in Laravel/Lumen, the data between different requests will affect each other, it's Unsafe. For example, the database connection is a singleton, the same database connection shares the same PDO resource. This is fine in the synchronous blocking mode, but it does not work in the asynchronous coroutine mode. Each query needs to create different connections and maintain IO state of different connections, which requires a connection pool.

DO NOT enable the coroutine, only the custom process can use the coroutine.

Custom process

Support developers to create special work processes for monitoring, reporting, or other special tasks. Refer addProcess.

Create Proccess class, implements CustomProcessInterface.

namespace App\Processes;
use App\Tasks\TestTask;
use Hhxsv5\LaravelS\Swoole\Process\CustomProcessInterface;
use Hhxsv5\LaravelS\Swoole\Task\Task;
use Swoole\Coroutine;
use Swoole\Http\Server;
use Swoole\Process;
class TestProcess implements CustomProcessInterface
{
    /**
     * @var bool Quit tag for Reload updates
     */
    private static $quit = false;

    public static function callback(Server $swoole, Process $process)
    {
        // The callback method cannot exit. Once exited, Manager process will automatically create the process 
        while (!self::$quit) {
            \Log::info('Test process: running');
            // sleep(1); // Swoole < 2.1
            Coroutine::sleep(1); // Swoole>=2.1: Coroutine & Runtime will be automatically enabled for callback().
             // Deliver task in custom process, but NOT support callback finish() of task.
            // Note: Modify task_ipc_mode to 1 or 2 in config/laravels.php, see https://www.swoole.co.uk/docs/modules/swoole-server/configuration
            $ret = Task::deliver(new TestTask('task data'));
            var_dump($ret);
            // The upper layer will catch the exception thrown in the callback and record it in the Swoole log, and then this process will exit. The Manager process will re-create the process after 3 seconds, so developers need to try/catch to catch the exception by themselves to avoid frequent process creation.
            // throw new \Exception('an exception');
        }
    }
    // Requirements: LaravelS >= v3.4.0 & callback() must be async non-blocking program.
    public static function onReload(Server $swoole, Process $process)
    {
        // Stop the process...
        // Then end process
        \Log::info('Test process: reloading');
        self::$quit = true;
        // $process->exit(0); // Force exit process
    }
    // Requirements: LaravelS >= v3.7.4 & callback() must be async non-blocking program.
    public static function onStop(Server $swoole, Process $process)
    {
        // Stop the process...
        // Then end process
        \Log::info('Test process: stopping');
        self::$quit = true;
        // $process->exit(0); // Force exit process
    }
}

Register TestProcess.

// Edit `config/laravels.php`
// ...
'processes' => [
    'test' => [ // Key name is process name
        'class'    => \App\Processes\TestProcess::class,
        'redirect' => false, // Whether redirect stdin/stdout, true or false
        'pipe'     => 0,     // The type of pipeline, 0: no pipeline 1: SOCK_STREAM 2: SOCK_DGRAM
        'enable'   => true,  // Whether to enable, default true
        //'num'    => 3   // To create multiple processes of this class, default is 1
        //'queue'    => [ // Enable message queue as inter-process communication, configure empty array means use default parameters
        //    'msg_key'  => 0,    // The key of the message queue. Default: ftok(__FILE__, 1).
        //    'mode'     => 2,    // Communication mode, default is 2, which means contention mode
        //    'capacity' => 8192, // The length of a single message, is limited by the operating system kernel parameters. The default is 8192, and the maximum is 65536
        //],
        //'restart_interval' => 5, // After the process exits abnormally, how many seconds to wait before restarting the process, default 5 seconds
    ],
],

Note: The callback() cannot quit. If quit, the Manager process will re-create the process.

Example: Write data to a custom process.

// config/laravels.php
'processes' => [
    'test' => [
        'class'    => \App\Processes\TestProcess::class,
        'redirect' => false,
        'pipe'     => 1,
    ],
],

// app/Processes/TestProcess.php
public static function callback(Server $swoole, Process $process)
{
    while ($data = $process->read()) {
        \Log::info('TestProcess: read data', [$data]);
        $process->write('TestProcess: ' . $data);
    }
}

// app/Http/Controllers/TestController.php
public function testProcessWrite()
{
    /**@var \Swoole\Process $process */
    $process = app('swoole')->customProcesses['test'];
    $process->write('TestController: write data' . time());
    var_dump($process->read());
}

Common components

Apollo

LaravelS will pull the Apollo configuration and write it to the .env file when starting. At the same time, LaravelS will start the custom process apollo to monitor the configuration and automatically reload when the configuration changes.

Enable Apollo: add --enable-apollo and Apollo parameters to the startup parameters.

php bin/laravels start --enable-apollo --apollo-server=http://127.0.0.1:8080 --apollo-app-id=LARAVEL-S-TEST

Support hot updates(optional).

// Edit `config/laravels.php`
'processes' => Hhxsv5\LaravelS\Components\Apollo\Process::getDefinition(),

// When there are other custom process configurations
'processes' => [
    'test' => [
        'class'    => \App\Processes\TestProcess::class,
        'redirect' => false,
        'pipe'     => 1,
    ],
    // ...
] + Hhxsv5\LaravelS\Components\Apollo\Process::getDefinition(),

List of available parameters.

Parameter	Description	Default	Demo
apollo-server	Apollo server URL	-	--apollo-server=http://127.0.0.1:8080
apollo-app-id	Apollo APP ID	-	--apollo-app-id=LARAVEL-S-TEST
apollo-namespaces	The namespace to which the APP belongs, support specify the multiple	application	--apollo-namespaces=application --apollo-namespaces=env
apollo-cluster	The cluster to which the APP belongs	default	--apollo-cluster=default
apollo-client-ip	IP of current instance, can also be used for grayscale publishing	Local intranet IP	--apollo-client-ip=10.2.1.83
apollo-pull-timeout	Timeout time(seconds) when pulling configuration	5	--apollo-pull-timeout=5
apollo-backup-old-env	Whether to backup the old configuration file when updating the configuration file .env	false	--apollo-backup-old-env

Prometheus

Support Prometheus monitoring and alarm, Grafana visually view monitoring metrics. Please refer to Docker Compose for the environment construction of Prometheus and Grafana.

Require extension APCu >= 5.0.0, please install it by pecl install apcu.

Copy the configuration file prometheus.php to the config directory of your project. Modify the configuration as appropriate.

# Execute commands in the project root directory
cp vendor/hhxsv5/laravel-s/config/prometheus.php config/

If your project is Lumen, you also need to manually load the configuration $app->configure('prometheus'); in bootstrap/app.php.

Configure global middleware: Hhxsv5\LaravelS\Components\Prometheus\RequestMiddleware::class. In order to count the request time consumption as accurately as possible, RequestMiddleware must be the first global middleware, which needs to be placed in front of other middleware.

Register ServiceProvider: Hhxsv5\LaravelS\Components\Prometheus\ServiceProvider::class.

Configure the CollectorProcess in config/laravels.php to collect the metrics of Swoole Worker/Task/Timer processes regularly.

'processes' => Hhxsv5\LaravelS\Components\Prometheus\CollectorProcess::getDefinition(),

Create the route to output metrics.

use Hhxsv5\LaravelS\Components\Prometheus\Exporter;

Route::get('/actuator/prometheus', function () {
    $result = app(Exporter::class)->render();
    return response($result, 200, ['Content-Type' => Exporter::REDNER_MIME_TYPE]);
});

Complete the configuration of Prometheus and start it.

global:
  scrape_interval: 5s
  scrape_timeout: 5s
  evaluation_interval: 30s
scrape_configs:
- job_name: laravel-s-test
  honor_timestamps: true
  metrics_path: /actuator/prometheus
  scheme: http
  follow_redirects: true
  static_configs:
  - targets:
    - 127.0.0.1:5200 # The ip and port of the monitored service
# Dynamically discovered using one of the supported service-discovery mechanisms
# https://prometheus.io/docs/prometheus/latest/configuration/configuration/#scrape_config
# - job_name: laravels-eureka
#   honor_timestamps: true
#   scrape_interval: 5s
#   metrics_path: /actuator/prometheus
#   scheme: http
#   follow_redirects: true
  # eureka_sd_configs:
  # - server: http://127.0.0.1:8080/eureka
  #   follow_redirects: true
  #   refresh_interval: 5s

Start Grafana, then import panel json.

Other features

Configure Swoole events

Supported events:

Event	Interface	When happened
ServerStart	Hhxsv5\LaravelS\Swoole\Events\ServerStartInterface	Occurs when the Master process is starting, this event should not handle complex business logic, and can only do some simple work of initialization.
ServerStop	Hhxsv5\LaravelS\Swoole\Events\ServerStopInterface	Occurs when the server exits normally, CANNOT use async or coroutine related APIs in this event.
WorkerStart	Hhxsv5\LaravelS\Swoole\Events\WorkerStartInterface	Occurs after the Worker/Task process is started, and the Laravel initialization has been completed.
WorkerStop	Hhxsv5\LaravelS\Swoole\Events\WorkerStopInterface	Occurs after the Worker/Task process exits normally
WorkerError	Hhxsv5\LaravelS\Swoole\Events\WorkerErrorInterface	Occurs when an exception or fatal error occurs in the Worker/Task process

1.Create an event class to implement the corresponding interface.

namespace App\Events;
use Hhxsv5\LaravelS\Swoole\Events\ServerStartInterface;
use Swoole\Atomic;
use Swoole\Http\Server;
class ServerStartEvent implements ServerStartInterface
{
    public function __construct()
    {
    }
    public function handle(Server $server)
    {
        // Initialize a global counter (available across processes)
        $server->atomicCount = new Atomic(2233);

        // Invoked in controller: app('swoole')->atomicCount->get();
    }
}

namespace App\Events;
use Hhxsv5\LaravelS\Swoole\Events\WorkerStartInterface;
use Swoole\Http\Server;
class WorkerStartEvent implements WorkerStartInterface
{
    public function __construct()
    {
    }
    public function handle(Server $server, $workerId)
    {
        // Initialize a database connection pool
        // DatabaseConnectionPool::init();
    }
}

2.Configuration.

// Edit `config/laravels.php`
'event_handlers' => [
    'ServerStart' => [\App\Events\ServerStartEvent::class], // Trigger events in array order
    'WorkerStart' => [\App\Events\WorkerStartEvent::class],
],

Serverless

Alibaba Cloud Function Compute

Function Compute.

1.Modify bootstrap/app.php and set the storage directory. Because the project directory is read-only, the /tmp directory can only be read and written.

$app->useStoragePath(env('APP_STORAGE_PATH', '/tmp/storage'));

2.Create a shell script laravels_bootstrap and grant executable permission.

#!/usr/bin/env bash
set +e

# Create storage-related directories
mkdir -p /tmp/storage/app/public
mkdir -p /tmp/storage/framework/cache
mkdir -p /tmp/storage/framework/sessions
mkdir -p /tmp/storage/framework/testing
mkdir -p /tmp/storage/framework/views
mkdir -p /tmp/storage/logs

# Set the environment variable APP_STORAGE_PATH, please make sure it's the same as APP_STORAGE_PATH in .env
export APP_STORAGE_PATH=/tmp/storage

# Start LaravelS
php bin/laravels start

3.Configure template.xml.

ROSTemplateFormatVersion: '2015-09-01'
Transform: 'Aliyun::Serverless-2018-04-03'
Resources:
  laravel-s-demo:
    Type: 'Aliyun::Serverless::Service'
    Properties:
      Description: 'LaravelS Demo for Serverless'
    fc-laravel-s:
      Type: 'Aliyun::Serverless::Function'
      Properties:
        Handler: laravels.handler
        Runtime: custom
        MemorySize: 512
        Timeout: 30
        CodeUri: ./
        InstanceConcurrency: 10
        EnvironmentVariables:
          BOOTSTRAP_FILE: laravels_bootstrap

Important notices

Singleton Issue

Under FPM mode, singleton instances will be instantiated and recycled in every request, request start=>instantiate instance=>request end=>recycled instance.

Under Swoole Server, All singleton instances will be held in memory, different lifetime from FPM, request start=>instantiate instance=>request end=>do not recycle singleton instance. So need developer to maintain status of singleton instances in every request.

Common solutions:

Write a XxxCleaner class to clean up the singleton object state. This class implements the interface Hhxsv5\LaravelS\Illuminate\Cleaners\CleanerInterface and then registers it in cleaners of laravels.php.

Reset status of singleton instances by Middleware.

Re-register ServiceProvider, add XxxServiceProvider into register_providers of file laravels.php. So that reinitialize singleton instances in every request Refer.

Cleaners

Configuration cleaners.

Known issues

Known issues: a package of known issues and solutions.

Debugging method

Logging; if you want to output to the console, you can use stderr, Log::channel('stderr')->debug('debug message').

Laravel Dump Server(Laravel 5.7 has been integrated by default).

Read request

Read request by Illuminate\Http\Request Object, $_ENV is readable, $_SERVER is partially readable, CANNOT USE $_GET/$_POST/$_FILES/$_COOKIE/$_REQUEST/$_SESSION/$GLOBALS.

public function form(\Illuminate\Http\Request $request)
{
    $name = $request->input('name');
    $all = $request->all();
    $sessionId = $request->cookie('sessionId');
    $photo = $request->file('photo');
    // Call getContent() to get the raw POST body, instead of file_get_contents('php://input')
    $rawContent = $request->getContent();
    //...
}

Output response

Respond by Illuminate\Http\Response Object, compatible with echo/vardump()/print_r()，CANNOT USE functions dd()/exit()/die()/header()/setcookie()/http_response_code().

public function json()
{
    return response()->json(['time' => time()])->header('header1', 'value1')->withCookie('c1', 'v1');
}

Persistent connection

Singleton connection will be resident in memory, it is recommended to turn on persistent connection for better performance.

1. Database connection, it will reconnect automatically immediately after disconnect.

// config/database.php
'connections' => [
    'my_conn' => [
        'driver'    => 'mysql',
        'host'      => env('DB_MY_CONN_HOST', 'localhost'),
        'port'      => env('DB_MY_CONN_PORT', 3306),
        'database'  => env('DB_MY_CONN_DATABASE', 'forge'),
        'username'  => env('DB_MY_CONN_USERNAME', 'forge'),
        'password'  => env('DB_MY_CONN_PASSWORD', ''),
        'charset'   => 'utf8mb4',
        'collation' => 'utf8mb4_unicode_ci',
        'prefix'    => '',
        'strict'    => false,
        'options'   => [
            // Enable persistent connection
            \PDO::ATTR_PERSISTENT => true,
        ],
    ],
],

1. Redis connection, it won't reconnect automatically immediately after disconnect, and will throw an exception about lost connection, reconnect next time. You need to make sure that SELECT DB correctly before operating Redis every time.

// config/database.php
'redis' => [
    'client' => env('REDIS_CLIENT', 'phpredis'), // It is recommended to use phpredis for better performance.
    'default' => [
        'host'       => env('REDIS_HOST', 'localhost'),
        'password'   => env('REDIS_PASSWORD', null),
        'port'       => env('REDIS_PORT', 6379),
        'database'   => 0,
        'persistent' => true, // Enable persistent connection
    ],
],

About memory leaks

Avoid using global variables. If necessary, please clean or reset them manually.

Infinitely appending element into static/global variable will lead to OOM(Out of Memory).

class Test
{
    public static $array = [];
    public static $string = '';
}

// Controller
public function test(Request $req)
{
    // Out of Memory
    Test::$array[] = $req->input('param1');
    Test::$string .= $req->input('param2');
}

Memory leak detection method

Modify config/laravels.php: worker_num=1, max_request=1000000, remember to change it back after test;

Add routing /debug-memory-leak without route middleware to observe the memory changes of the Worker process;

Route::get('/debug-memory-leak', function () {
    global $previous;
    $current = memory_get_usage();
    $stats = [
        'prev_mem' => $previous,
        'curr_mem' => $current,
        'diff_mem' => $current - $previous,
    ];
    $previous = $current;
    return $stats;
});

Start LaravelS and request /debug-memory-leak until diff_mem is less than or equal to zero; if diff_mem is always greater than zero, it means that there may be a memory leak in Global Middleware or Laravel Framework;

After completing Step 3, alternately request the business routes and /debug-memory-leak (It is recommended to use ab/wrk to make a large number of requests for business routes), the initial increase in memory is normal. After a large number of requests for the business routes, if diff_mem is always greater than zero and curr_mem continues to increase, there is a high probability of memory leak; If curr_mem always changes within a certain range and does not continue to increase, there is a low probability of memory leak.

If you still can't solve it, max_request is the last guarantee.

Linux kernel parameter adjustment

Linux kernel parameter adjustment

Pressure test

Pressure test

---

Author: hhxsv5
Source Code: https://github.com/hhxsv5/laravel-s
License: MIT License

#laravel #php 

LaravelS: Glue for using Swoole in Laravel Or Lumen

🚀 LaravelS is an out-of-the-box adapter between Swoole and Laravel/Lumen.

Please Watch this repository to get the latest updates.

 _                               _  _____ 
| |                             | |/ ____|
| |     __ _ _ __ __ ___   _____| | (___  
| |    / _` | '__/ _` \ \ / / _ \ |\___ \ 
| |___| (_| | | | (_| |\ V /  __/ |____) |
|______\__,_|_|  \__,_| \_/ \___|_|_____/ 

中文文档

Features

Built-in Http/WebSocket server

Multi-port mixed protocol

Custom process

Memory resident

Asynchronous event listening

Asynchronous task queue

Millisecond cron job

Common Components

Gracefully reload

Automatically reload after modifying code

Support Laravel/Lumen both, good compatibility

Simple & Out of the box

Benchmark

Which is the fastest web framework?

TechEmpower Framework Benchmarks

Requirements

Dependency	Requirement
PHP	>= 5.5.9 Recommend PHP7+
Swoole	>= 1.7.19 No longer support PHP5 since 2.0.12 Recommend 4.5.0+
Laravel/Lumen	>= 5.1 Recommend 8.0+

Install

1.Require package via Composer(packagist).

composer require "hhxsv5/laravel-s:~3.7.0" -vvv
# Make sure that your composer.lock file is under the VCS

2.Register service provider(pick one of two).

Laravel: in config/app.php file, Laravel 5.5+ supports package discovery automatically, you should skip this step

'providers' => [
    //...
    Hhxsv5\LaravelS\Illuminate\LaravelSServiceProvider::class,
],

Lumen: in bootstrap/app.php file

$app->register(Hhxsv5\LaravelS\Illuminate\LaravelSServiceProvider::class);

3.Publish configuration and binaries.

After upgrading LaravelS, you need to republish; click here to see the change notes of each version.

php artisan laravels publish
# Configuration: config/laravels.php
# Binary: bin/laravels bin/fswatch bin/inotify

4.Change config/laravels.php: listen_ip, listen_port, refer Settings.

5.Performance tuning

Adjust kernel parameters

Number of Workers: LaravelS uses Swoole's Synchronous IO mode, the larger the worker_num setting, the better the concurrency performance, but it will cause more memory usage and process switching overhead. If one request takes 100ms, in order to provide 1000QPS concurrency, at least 100 Worker processes need to be configured. The calculation method is: worker_num = 1000QPS/(1s/1ms) = 100, so incremental pressure testing is needed to calculate the best worker_num.

Number of Task Workers

Run

Please read the notices carefully before running, Important notices(IMPORTANT).

• Commands: php bin/laravels {start|stop|restart|reload|info|help}.

Command	Description
start	Start LaravelS, list the processes by "ps -ef|grep laravels"
stop	Stop LaravelS, and trigger the method onStop of Custom process
restart	Restart LaravelS: Stop gracefully before starting; The service is unavailable until startup is complete
reload	Reload all Task/Worker/Timer processes which contain your business codes, and trigger the method onReload of Custom process, CANNOT reload Master/Manger processes. After modifying config/laravels.php, you only have to call restart to restart
info	Display component version information
help	Display help information

• Boot options for the commands start and restart.

Option	Description
-d|--daemonize	Run as a daemon, this option will override the swoole.daemonize setting in laravels.php
-e|--env	The environment the command should run under, such as --env=testing will use the configuration file .env.testing firstly, this feature requires Laravel 5.2+
-i|--ignore	Ignore checking PID file of Master process
-x|--x-version	The version(branch) of the current project, stored in $_ENV/$_SERVER, access via $_ENV['X_VERSION'] $_SERVER['X_VERSION'] $request->server->get('X_VERSION')

• Runtime files: start will automatically execute php artisan laravels config and generate these files, developers generally don't need to pay attention to them, it's recommended to add them to .gitignore.

File	Description
storage/laravels.conf	LaravelS's runtime configuration file
storage/laravels.pid	PID file of Master process
storage/laravels-timer-process.pid	PID file of the Timer process
storage/laravels-custom-processes.pid	PID file of all custom processes

Deploy

It is recommended to supervise the main process through Supervisord, the premise is without option -d and to set swoole.daemonize to false.

[program:laravel-s-test]
directory=/var/www/laravel-s-test
command=/usr/local/bin/php bin/laravels start -i
numprocs=1
autostart=true
autorestart=true
startretries=3
user=www-data
redirect_stderr=true
stdout_logfile=/var/log/supervisor/%(program_name)s.log

Cooperate with Nginx (Recommended)

Demo.

gzip on;
gzip_min_length 1024;
gzip_comp_level 2;
gzip_types text/plain text/css text/javascript application/json application/javascript application/x-javascript application/xml application/x-httpd-php image/jpeg image/gif image/png font/ttf font/otf image/svg+xml;
gzip_vary on;
gzip_disable "msie6";
upstream swoole {
    # Connect IP:Port
    server 127.0.0.1:5200 weight=5 max_fails=3 fail_timeout=30s;
    # Connect UnixSocket Stream file, tips: put the socket file in the /dev/shm directory to get better performance
    #server unix:/yourpath/laravel-s-test/storage/laravels.sock weight=5 max_fails=3 fail_timeout=30s;
    #server 192.168.1.1:5200 weight=3 max_fails=3 fail_timeout=30s;
    #server 192.168.1.2:5200 backup;
    keepalive 16;
}
server {
    listen 80;
    # Don't forget to bind the host
    server_name laravels.com;
    root /yourpath/laravel-s-test/public;
    access_log /yourpath/log/nginx/$server_name.access.log  main;
    autoindex off;
    index index.html index.htm;
    # Nginx handles the static resources(recommend enabling gzip), LaravelS handles the dynamic resource.
    location / {
        try_files $uri @laravels;
    }
    # Response 404 directly when request the PHP file, to avoid exposing public/*.php
    #location ~* \.php$ {
    #    return 404;
    #}
    location @laravels {
        # proxy_connect_timeout 60s;
        # proxy_send_timeout 60s;
        # proxy_read_timeout 120s;
        proxy_http_version 1.1;
        proxy_set_header Connection "";
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Real-PORT $remote_port;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_set_header Scheme $scheme;
        proxy_set_header Server-Protocol $server_protocol;
        proxy_set_header Server-Name $server_name;
        proxy_set_header Server-Addr $server_addr;
        proxy_set_header Server-Port $server_port;
        # "swoole" is the upstream
        proxy_pass http://swoole;
    }
}

Cooperate with Apache

LoadModule proxy_module /yourpath/modules/mod_proxy.so
LoadModule proxy_balancer_module /yourpath/modules/mod_proxy_balancer.so
LoadModule lbmethod_byrequests_module /yourpath/modules/mod_lbmethod_byrequests.so
LoadModule proxy_http_module /yourpath/modules/mod_proxy_http.so
LoadModule slotmem_shm_module /yourpath/modules/mod_slotmem_shm.so
LoadModule rewrite_module /yourpath/modules/mod_rewrite.so
LoadModule remoteip_module /yourpath/modules/mod_remoteip.so
LoadModule deflate_module /yourpath/modules/mod_deflate.so

<IfModule deflate_module>
    SetOutputFilter DEFLATE
    DeflateCompressionLevel 2
    AddOutputFilterByType DEFLATE text/html text/plain text/css text/javascript application/json application/javascript application/x-javascript application/xml application/x-httpd-php image/jpeg image/gif image/png font/ttf font/otf image/svg+xml
</IfModule>

<VirtualHost *:80>
    # Don't forget to bind the host
    ServerName www.laravels.com
    ServerAdmin hhxsv5@sina.com

    DocumentRoot /yourpath/laravel-s-test/public;
    DirectoryIndex index.html index.htm
    <Directory "/">
        AllowOverride None
        Require all granted
    </Directory>

    RemoteIPHeader X-Forwarded-For

    ProxyRequests Off
    ProxyPreserveHost On
    <Proxy balancer://laravels>  
        BalancerMember http://192.168.1.1:5200 loadfactor=7
        #BalancerMember http://192.168.1.2:5200 loadfactor=3
        #BalancerMember http://192.168.1.3:5200 loadfactor=1 status=+H
        ProxySet lbmethod=byrequests
    </Proxy>
    #ProxyPass / balancer://laravels/
    #ProxyPassReverse / balancer://laravels/

    # Apache handles the static resources, LaravelS handles the dynamic resource.
    RewriteEngine On
    RewriteCond %{DOCUMENT_ROOT}%{REQUEST_FILENAME} !-d
    RewriteCond %{DOCUMENT_ROOT}%{REQUEST_FILENAME} !-f
    RewriteRule ^/(.*)$ balancer://laravels%{REQUEST_URI} [P,L]

    ErrorLog ${APACHE_LOG_DIR}/www.laravels.com.error.log
    CustomLog ${APACHE_LOG_DIR}/www.laravels.com.access.log combined
</VirtualHost>

Enable WebSocket server

The Listening address of WebSocket Sever is the same as Http Server.

1.Create WebSocket Handler class, and implement interface WebSocketHandlerInterface.The instant is automatically instantiated when start, you do not need to manually create it.

namespace App\Services;
use Hhxsv5\LaravelS\Swoole\WebSocketHandlerInterface;
use Swoole\Http\Request;
use Swoole\Http\Response;
use Swoole\WebSocket\Frame;
use Swoole\WebSocket\Server;
/**
 * @see https://www.swoole.co.uk/docs/modules/swoole-websocket-server
 */
class WebSocketService implements WebSocketHandlerInterface
{
    // Declare constructor without parameters
    public function __construct()
    {
    }
    // public function onHandShake(Request $request, Response $response)
    // {
           // Custom handshake: https://www.swoole.co.uk/docs/modules/swoole-websocket-server-on-handshake
           // The onOpen event will be triggered automatically after a successful handshake
    // }
    public function onOpen(Server $server, Request $request)
    {
        // Before the onOpen event is triggered, the HTTP request to establish the WebSocket has passed the Laravel route,
        // so Laravel's Request, Auth information are readable, Session is readable and writable, but only in the onOpen event.
        // \Log::info('New WebSocket connection', [$request->fd, request()->all(), session()->getId(), session('xxx'), session(['yyy' => time()])]);
        // The exceptions thrown here will be caught by the upper layer and recorded in the Swoole log. Developers need to try/catch manually.
        $server->push($request->fd, 'Welcome to LaravelS');
    }
    public function onMessage(Server $server, Frame $frame)
    {
        // \Log::info('Received message', [$frame->fd, $frame->data, $frame->opcode, $frame->finish]);
        // The exceptions thrown here will be caught by the upper layer and recorded in the Swoole log. Developers need to try/catch manually.
        $server->push($frame->fd, date('Y-m-d H:i:s'));
    }
    public function onClose(Server $server, $fd, $reactorId)
    {
        // The exceptions thrown here will be caught by the upper layer and recorded in the Swoole log. Developers need to try/catch manually.
    }
}

2.Modify config/laravels.php.

// ...
'websocket'      => [
    'enable'  => true, // Note: set enable to true
    'handler' => \App\Services\WebSocketService::class,
],
'swoole'         => [
    //...
    // Must set dispatch_mode in (2, 4, 5), see https://www.swoole.co.uk/docs/modules/swoole-server/configuration
    'dispatch_mode' => 2,
    //...
],
// ...

3.Use SwooleTable to bind FD & UserId, optional, Swoole Table Demo. Also you can use the other global storage services, like Redis/Memcached/MySQL, but be careful that FD will be possible conflicting between multiple Swoole Servers.

4.Cooperate with Nginx (Recommended)

Refer WebSocket Proxy

map $http_upgrade $connection_upgrade {
    default upgrade;
    ''      close;
}
upstream swoole {
    # Connect IP:Port
    server 127.0.0.1:5200 weight=5 max_fails=3 fail_timeout=30s;
    # Connect UnixSocket Stream file, tips: put the socket file in the /dev/shm directory to get better performance
    #server unix:/yourpath/laravel-s-test/storage/laravels.sock weight=5 max_fails=3 fail_timeout=30s;
    #server 192.168.1.1:5200 weight=3 max_fails=3 fail_timeout=30s;
    #server 192.168.1.2:5200 backup;
    keepalive 16;
}
server {
    listen 80;
    # Don't forget to bind the host
    server_name laravels.com;
    root /yourpath/laravel-s-test/public;
    access_log /yourpath/log/nginx/$server_name.access.log  main;
    autoindex off;
    index index.html index.htm;
    # Nginx handles the static resources(recommend enabling gzip), LaravelS handles the dynamic resource.
    location / {
        try_files $uri @laravels;
    }
    # Response 404 directly when request the PHP file, to avoid exposing public/*.php
    #location ~* \.php$ {
    #    return 404;
    #}
    # Http and WebSocket are concomitant, Nginx identifies them by "location"
    # !!! The location of WebSocket is "/ws"
    # Javascript: var ws = new WebSocket("ws://laravels.com/ws");
    location =/ws {
        # proxy_connect_timeout 60s;
        # proxy_send_timeout 60s;
        # proxy_read_timeout: Nginx will close the connection if the proxied server does not send data to Nginx in 60 seconds; At the same time, this close behavior is also affected by heartbeat setting of Swoole.
        # proxy_read_timeout 60s;
        proxy_http_version 1.1;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Real-PORT $remote_port;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_set_header Scheme $scheme;
        proxy_set_header Server-Protocol $server_protocol;
        proxy_set_header Server-Name $server_name;
        proxy_set_header Server-Addr $server_addr;
        proxy_set_header Server-Port $server_port;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        proxy_pass http://swoole;
    }
    location @laravels {
        # proxy_connect_timeout 60s;
        # proxy_send_timeout 60s;
        # proxy_read_timeout 60s;
        proxy_http_version 1.1;
        proxy_set_header Connection "";
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Real-PORT $remote_port;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_set_header Scheme $scheme;
        proxy_set_header Server-Protocol $server_protocol;
        proxy_set_header Server-Name $server_name;
        proxy_set_header Server-Addr $server_addr;
        proxy_set_header Server-Port $server_port;
        proxy_pass http://swoole;
    }
}

5.Heartbeat setting

Heartbeat setting of Swoole

// config/laravels.php
'swoole' => [
    //...
    // All connections are traversed every 60 seconds. If a connection does not send any data to the server within 600 seconds, the connection will be forced to close.
    'heartbeat_idle_time'      => 600,
    'heartbeat_check_interval' => 60,
    //...
],

Proxy read timeout of Nginx

# Nginx will close the connection if the proxied server does not send data to Nginx in 60 seconds
proxy_read_timeout 60s;

6.Push data in controller

namespace App\Http\Controllers;
class TestController extends Controller
{
    public function push()
    {
        $fd = 1; // Find fd by userId from a map [userId=>fd].
        /**@var \Swoole\WebSocket\Server $swoole */
        $swoole = app('swoole');
        $success = $swoole->push($fd, 'Push data to fd#1 in Controller');
        var_dump($success);
    }
}

Listen events

System events

Usually, you can reset/destroy some global/static variables, or change the current Request/Response object.

laravels.received_request After LaravelS parsed Swoole\Http\Request to Illuminate\Http\Request, before Laravel's Kernel handles this request.

// Edit file `app/Providers/EventServiceProvider.php`, add the following code into method `boot`
// If no variable $events, you can also call Facade \Event::listen(). 
$events->listen('laravels.received_request', function (\Illuminate\Http\Request $req, $app) {
    $req->query->set('get_key', 'hhxsv5');// Change query of request
    $req->request->set('post_key', 'hhxsv5'); // Change post of request
});

laravels.generated_response After Laravel's Kernel handled the request, before LaravelS parses Illuminate\Http\Response to Swoole\Http\Response.

// Edit file `app/Providers/EventServiceProvider.php`, add the following code into method `boot`
// If no variable $events, you can also call Facade \Event::listen(). 
$events->listen('laravels.generated_response', function (\Illuminate\Http\Request $req, \Symfony\Component\HttpFoundation\Response $rsp, $app) {
    $rsp->headers->set('header-key', 'hhxsv5');// Change header of response
});

Customized asynchronous events

This feature depends on AsyncTask of Swoole, your need to set swoole.task_worker_num in config/laravels.php firstly. The performance of asynchronous event processing is influenced by number of Swoole task process, you need to set task_worker_num appropriately.

1.Create event class.

use Hhxsv5\LaravelS\Swoole\Task\Event;
class TestEvent extends Event
{
    protected $listeners = [
        // Listener list
        TestListener1::class,
        // TestListener2::class,
    ];
    private $data;
    public function __construct($data)
    {
        $this->data = $data;
    }
    public function getData()
    {
        return $this->data;
    }
}

2.Create listener class.

use Hhxsv5\LaravelS\Swoole\Task\Task;
use Hhxsv5\LaravelS\Swoole\Task\Listener;
class TestListener1 extends Listener
{
    /**
     * @var TestEvent
     */
    protected $event;
    
    public function handle()
    {
        \Log::info(__CLASS__ . ':handle start', [$this->event->getData()]);
        sleep(2);// Simulate the slow codes
        // Deliver task in CronJob, but NOT support callback finish() of task.
        // Note: Modify task_ipc_mode to 1 or 2 in config/laravels.php, see https://www.swoole.co.uk/docs/modules/swoole-server/configuration
        $ret = Task::deliver(new TestTask('task data'));
        var_dump($ret);
        // The exceptions thrown here will be caught by the upper layer and recorded in the Swoole log. Developers need to try/catch manually.
    }
}

3.Fire event.

// Create instance of event and fire it, "fire" is asynchronous.
use Hhxsv5\LaravelS\Swoole\Task\Event;
$event = new TestEvent('event data');
// $event->delay(10); // Delay 10 seconds to fire event
// $event->setTries(3); // When an error occurs, try 3 times in total
$success = Event::fire($event);
var_dump($success);// Return true if sucess, otherwise false

Asynchronous task queue

This feature depends on AsyncTask of Swoole, your need to set swoole.task_worker_num in config/laravels.php firstly. The performance of task processing is influenced by number of Swoole task process, you need to set task_worker_num appropriately.

1.Create task class.

use Hhxsv5\LaravelS\Swoole\Task\Task;
class TestTask extends Task
{
    private $data;
    private $result;
    public function __construct($data)
    {
        $this->data = $data;
    }
    // The logic of task handling, run in task process, CAN NOT deliver task
    public function handle()
    {
        \Log::info(__CLASS__ . ':handle start', [$this->data]);
        sleep(2);// Simulate the slow codes
        // The exceptions thrown here will be caught by the upper layer and recorded in the Swoole log. Developers need to try/catch manually.
        $this->result = 'the result of ' . $this->data;
    }
    // Optional, finish event, the logic of after task handling, run in worker process, CAN deliver task 
    public function finish()
    {
        \Log::info(__CLASS__ . ':finish start', [$this->result]);
        Task::deliver(new TestTask2('task2 data')); // Deliver the other task
    }
}

2.Deliver task.

// Create instance of TestTask and deliver it, "deliver" is asynchronous.
use Hhxsv5\LaravelS\Swoole\Task\Task;
$task = new TestTask('task data');
// $task->delay(3);// delay 3 seconds to deliver task
// $task->setTries(3); // When an error occurs, try 3 times in total
$ret = Task::deliver($task);
var_dump($ret);// Return true if sucess, otherwise false

Millisecond cron job

Wrapper cron job base on Swoole's Millisecond Timer, replace Linux Crontab.

1.Create cron job class.

namespace App\Jobs\Timer;
use App\Tasks\TestTask;
use Swoole\Coroutine;
use Hhxsv5\LaravelS\Swoole\Task\Task;
use Hhxsv5\LaravelS\Swoole\Timer\CronJob;
class TestCronJob extends CronJob
{
    protected $i = 0;
    // !!! The `interval` and `isImmediate` of cron job can be configured in two ways(pick one of two): one is to overload the corresponding method, and the other is to pass parameters when registering cron job.
    // --- Override the corresponding method to return the configuration: begin
    public function interval()
    {
        return 1000;// Run every 1000ms
    }
    public function isImmediate()
    {
        return false;// Whether to trigger `run` immediately after setting up
    }
    // --- Override the corresponding method to return the configuration: end
    public function run()
    {
        \Log::info(__METHOD__, ['start', $this->i, microtime(true)]);
        // do something
        // sleep(1); // Swoole < 2.1
        Coroutine::sleep(1); // Swoole>=2.1 Coroutine will be automatically created for run().
        $this->i++;
        \Log::info(__METHOD__, ['end', $this->i, microtime(true)]);

        if ($this->i >= 10) { // Run 10 times only
            \Log::info(__METHOD__, ['stop', $this->i, microtime(true)]);
            $this->stop(); // Stop this cron job, but it will run again after restart/reload.
            // Deliver task in CronJob, but NOT support callback finish() of task.
            // Note: Modify task_ipc_mode to 1 or 2 in config/laravels.php, see https://www.swoole.co.uk/docs/modules/swoole-server/configuration
            $ret = Task::deliver(new TestTask('task data'));
            var_dump($ret);
        }
        // The exceptions thrown here will be caught by the upper layer and recorded in the Swoole log. Developers need to try/catch manually.
    }
}

2.Register cron job.

// Register cron jobs in file "config/laravels.php"
[
    // ...
    'timer'          => [
        'enable' => true, // Enable Timer
        'jobs'   => [ // The list of cron job
            // Enable LaravelScheduleJob to run `php artisan schedule:run` every 1 minute, replace Linux Crontab
            // \Hhxsv5\LaravelS\Illuminate\LaravelScheduleJob::class,
            // Two ways to configure parameters:
            // [\App\Jobs\Timer\TestCronJob::class, [1000, true]], // Pass in parameters when registering
            \App\Jobs\Timer\TestCronJob::class, // Override the corresponding method to return the configuration
        ],
        'max_wait_time' => 5, // Max waiting time of reloading
        // Enable the global lock to ensure that only one instance starts the timer when deploying multiple instances. This feature depends on Redis, please see https://laravel.com/docs/7.x/redis
        'global_lock'     => false,
        'global_lock_key' => config('app.name', 'Laravel'),
    ],
    // ...
];

3.Note: it will launch multiple timers when build the server cluster, so you need to make sure that launch one timer only to avoid running repetitive task.

4.LaravelS v3.4.0 starts to support the hot restart [Reload] Timer process. After LaravelS receives the SIGUSR1 signal, it waits for max_wait_time(default 5) seconds to end the process, then the Manager process will pull up the Timer process again.

5.If you only need to use minute-level scheduled tasks, it is recommended to enable Hhxsv5\LaravelS\Illuminate\LaravelScheduleJob instead of Linux Crontab, so that you can follow the coding habits of Laravel task scheduling and configure Kernel.

// app/Console/Kernel.php
protected function schedule(Schedule $schedule)
{
    // runInBackground() will start a new child process to execute the task. This is asynchronous and will not affect the execution timing of other tasks.
    $schedule->command(TestCommand::class)->runInBackground()->everyMinute();
}

Automatically reload after modifying code

Via inotify, support Linux only.

1.Install inotify extension.

2.Turn on the switch in Settings.

3.Notice: Modify the file only in Linux to receive the file change events. It's recommended to use the latest Docker. Vagrant Solution.

Via fswatch, support OS X/Linux/Windows.

1.Install fswatch.

2.Run command in your project root directory.

# Watch current directory
./bin/fswatch
# Watch app directory
./bin/fswatch ./app

Via inotifywait, support Linux.

1.Install inotify-tools.

2.Run command in your project root directory.

# Watch current directory
./bin/inotify
# Watch app directory
./bin/inotify ./app

When the above methods does not work, the ultimate solution: set max_request=1,worker_num=1, so that Worker process will restart after processing a request. The performance of this method is very poor, so only development environment use.

Get the instance of SwooleServer in your project

/**
 * $swoole is the instance of `Swoole\WebSocket\Server` if enable WebSocket server, otherwise `Swoole\Http\Server`
 * @var \Swoole\WebSocket\Server|\Swoole\Http\Server $swoole
 */
$swoole = app('swoole');
var_dump($swoole->stats());
$swoole->push($fd, 'Push WebSocket message');

Use SwooleTable

1.Define Table, support multiple.

All defined tables will be created before Swoole starting.

// in file "config/laravels.php"
[
    // ...
    'swoole_tables'  => [
        // Scene：bind UserId & FD in WebSocket
        'ws' => [// The Key is table name, will add suffix "Table" to avoid naming conflicts. Here defined a table named "wsTable"
            'size'   => 102400,// The max size
            'column' => [// Define the columns
                ['name' => 'value', 'type' => \Swoole\Table::TYPE_INT, 'size' => 8],
            ],
        ],
        //...Define the other tables
    ],
    // ...
];

2.Access Table: all table instances will be bound on SwooleServer, access by app('swoole')->xxxTable.

namespace App\Services;
use Hhxsv5\LaravelS\Swoole\WebSocketHandlerInterface;
use Swoole\Http\Request;
use Swoole\WebSocket\Frame;
use Swoole\WebSocket\Server;
class WebSocketService implements WebSocketHandlerInterface
{
    /**@var \Swoole\Table $wsTable */
    private $wsTable;
    public function __construct()
    {
        $this->wsTable = app('swoole')->wsTable;
    }
    // Scene：bind UserId & FD in WebSocket
    public function onOpen(Server $server, Request $request)
    {
        // var_dump(app('swoole') === $server);// The same instance
        /**
         * Get the currently logged in user
         * This feature requires that the path to establish a WebSocket connection go through middleware such as Authenticate.
         * E.g:
         * Browser side: var ws = new WebSocket("ws://127.0.0.1:5200/ws");
         * Then the /ws route in Laravel needs to add the middleware like Authenticate.
         * Route::get('/ws', function () {
         *     // Respond any content with status code 200
         *     return 'websocket';
         * })->middleware(['auth']);
         */
        // $user = Auth::user();
        // $userId = $user ? $user->id : 0; // 0 means a guest user who is not logged in
        $userId = mt_rand(1000, 10000);
        // if (!$userId) {
        //     // Disconnect the connections of unlogged users
        //     $server->disconnect($request->fd);
        //     return;
        // }
        $this->wsTable->set('uid:' . $userId, ['value' => $request->fd]);// Bind map uid to fd
        $this->wsTable->set('fd:' . $request->fd, ['value' => $userId]);// Bind map fd to uid
        $server->push($request->fd, "Welcome to LaravelS #{$request->fd}");
    }
    public function onMessage(Server $server, Frame $frame)
    {
        // Broadcast
        foreach ($this->wsTable as $key => $row) {
            if (strpos($key, 'uid:') === 0 && $server->isEstablished($row['value'])) {
                $content = sprintf('Broadcast: new message "%s" from #%d', $frame->data, $frame->fd);
                $server->push($row['value'], $content);
            }
        }
    }
    public function onClose(Server $server, $fd, $reactorId)
    {
        $uid = $this->wsTable->get('fd:' . $fd);
        if ($uid !== false) {
            $this->wsTable->del('uid:' . $uid['value']); // Unbind uid map
        }
        $this->wsTable->del('fd:' . $fd);// Unbind fd map
        $server->push($fd, "Goodbye #{$fd}");
    }
}

Multi-port mixed protocol

For more information, please refer to Swoole Server AddListener

To make our main server support more protocols not just Http and WebSocket, we bring the feature multi-port mixed protocol of Swoole in LaravelS and name it Socket. Now, you can build TCP/UDP applications easily on top of Laravel.

Create Socket handler class, and extend Hhxsv5\LaravelS\Swoole\Socket\{TcpSocket|UdpSocket|Http|WebSocket}.

namespace App\Sockets;
use Hhxsv5\LaravelS\Swoole\Socket\TcpSocket;
use Swoole\Server;
class TestTcpSocket extends TcpSocket
{
    public function onConnect(Server $server, $fd, $reactorId)
    {
        \Log::info('New TCP connection', [$fd]);
        $server->send($fd, 'Welcome to LaravelS.');
    }
    public function onReceive(Server $server, $fd, $reactorId, $data)
    {
        \Log::info('Received data', [$fd, $data]);
        $server->send($fd, 'LaravelS: ' . $data);
        if ($data === "quit\r\n") {
            $server->send($fd, 'LaravelS: bye' . PHP_EOL);
            $server->close($fd);
        }
    }
    public function onClose(Server $server, $fd, $reactorId)
    {
        \Log::info('Close TCP connection', [$fd]);
        $server->send($fd, 'Goodbye');
    }
}

These Socket connections share the same worker processes with your HTTP/WebSocket connections. So it won't be a problem at all if you want to deliver tasks, use SwooleTable, even Laravel components such as DB, Eloquent and so on. At the same time, you can access Swoole\Server\Port object directly by member property swoolePort.

public function onReceive(Server $server, $fd, $reactorId, $data)
{
    $port = $this->swoolePort; // Get the `Swoole\Server\Port` object
}

namespace App\Http\Controllers;
class TestController extends Controller
{
    public function test()
    {
        /**@var \Swoole\Http\Server|\Swoole\WebSocket\Server $swoole */
        $swoole = app('swoole');
        // $swoole->ports: Traverse all Port objects, https://www.swoole.co.uk/docs/modules/swoole-server/multiple-ports
        $port = $swoole->ports[0]; // Get the `Swoole\Server\Port` object, $port[0] is the port of the main server
        foreach ($port->connections as $fd) { // Traverse all connections
            // $swoole->send($fd, 'Send tcp message');
            // if($swoole->isEstablished($fd)) {
            //     $swoole->push($fd, 'Send websocket message');
            // }
        }
    }
}

Register Sockets.

// Edit `config/laravels.php`
//...
'sockets' => [
    [
        'host'     => '127.0.0.1',
        'port'     => 5291,
        'type'     => SWOOLE_SOCK_TCP,// Socket type: SWOOLE_SOCK_TCP/SWOOLE_SOCK_TCP6/SWOOLE_SOCK_UDP/SWOOLE_SOCK_UDP6/SWOOLE_UNIX_DGRAM/SWOOLE_UNIX_STREAM
        'settings' => [// Swoole settings：https://www.swoole.co.uk/docs/modules/swoole-server-methods#swoole_server-addlistener
            'open_eof_check' => true,
            'package_eof'    => "\r\n",
        ],
        'handler'  => \App\Sockets\TestTcpSocket::class,
        'enable'   => true, // whether to enable, default true
    ],
],

About the heartbeat configuration, it can only be set on the main server and cannot be configured on Socket, but the Socket inherits the heartbeat configuration of the main server.

For TCP socket, onConnect and onClose events will be blocked when dispatch_mode of Swoole is 1/3, so if you want to unblock these two events please set dispatch_mode to 2/4/5.

'swoole' => [
    //...
    'dispatch_mode' => 2,
    //...
];

Test.

TCP: telnet 127.0.0.1 5291

UDP: [Linux] echo "Hello LaravelS" > /dev/udp/127.0.0.1/5292

Register example of other protocols.

• UDP
• Http
• WebSocket: The main server must turn on WebSocket, that is, set websocket.enable to true.

Coroutine

Swoole Coroutine

Warning: The order of code execution in the coroutine is out of order. The data of the request level should be isolated by the coroutine ID. However, there are many singleton and static attributes in Laravel/Lumen, the data between different requests will affect each other, it's Unsafe. For example, the database connection is a singleton, the same database connection shares the same PDO resource. This is fine in the synchronous blocking mode, but it does not work in the asynchronous coroutine mode. Each query needs to create different connections and maintain IO state of different connections, which requires a connection pool.

DO NOT enable the coroutine, only the custom process can use the coroutine.

Custom process

Support developers to create special work processes for monitoring, reporting, or other special tasks. Refer addProcess.

Create Proccess class, implements CustomProcessInterface.

namespace App\Processes;
use App\Tasks\TestTask;
use Hhxsv5\LaravelS\Swoole\Process\CustomProcessInterface;
use Hhxsv5\LaravelS\Swoole\Task\Task;
use Swoole\Coroutine;
use Swoole\Http\Server;
use Swoole\Process;
class TestProcess implements CustomProcessInterface
{
    /**
     * @var bool Quit tag for Reload updates
     */
    private static $quit = false;

    public static function callback(Server $swoole, Process $process)
    {
        // The callback method cannot exit. Once exited, Manager process will automatically create the process 
        while (!self::$quit) {
            \Log::info('Test process: running');
            // sleep(1); // Swoole < 2.1
            Coroutine::sleep(1); // Swoole>=2.1: Coroutine & Runtime will be automatically enabled for callback().
             // Deliver task in custom process, but NOT support callback finish() of task.
            // Note: Modify task_ipc_mode to 1 or 2 in config/laravels.php, see https://www.swoole.co.uk/docs/modules/swoole-server/configuration
            $ret = Task::deliver(new TestTask('task data'));
            var_dump($ret);
            // The upper layer will catch the exception thrown in the callback and record it in the Swoole log, and then this process will exit. The Manager process will re-create the process after 3 seconds, so developers need to try/catch to catch the exception by themselves to avoid frequent process creation.
            // throw new \Exception('an exception');
        }
    }
    // Requirements: LaravelS >= v3.4.0 & callback() must be async non-blocking program.
    public static function onReload(Server $swoole, Process $process)
    {
        // Stop the process...
        // Then end process
        \Log::info('Test process: reloading');
        self::$quit = true;
        // $process->exit(0); // Force exit process
    }
    // Requirements: LaravelS >= v3.7.4 & callback() must be async non-blocking program.
    public static function onStop(Server $swoole, Process $process)
    {
        // Stop the process...
        // Then end process
        \Log::info('Test process: stopping');
        self::$quit = true;
        // $process->exit(0); // Force exit process
    }
}

Register TestProcess.

// Edit `config/laravels.php`
// ...
'processes' => [
    'test' => [ // Key name is process name
        'class'    => \App\Processes\TestProcess::class,
        'redirect' => false, // Whether redirect stdin/stdout, true or false
        'pipe'     => 0,     // The type of pipeline, 0: no pipeline 1: SOCK_STREAM 2: SOCK_DGRAM
        'enable'   => true,  // Whether to enable, default true
        //'num'    => 3   // To create multiple processes of this class, default is 1
        //'queue'    => [ // Enable message queue as inter-process communication, configure empty array means use default parameters
        //    'msg_key'  => 0,    // The key of the message queue. Default: ftok(__FILE__, 1).
        //    'mode'     => 2,    // Communication mode, default is 2, which means contention mode
        //    'capacity' => 8192, // The length of a single message, is limited by the operating system kernel parameters. The default is 8192, and the maximum is 65536
        //],
        //'restart_interval' => 5, // After the process exits abnormally, how many seconds to wait before restarting the process, default 5 seconds
    ],
],

Note: The callback() cannot quit. If quit, the Manager process will re-create the process.

Example: Write data to a custom process.

// config/laravels.php
'processes' => [
    'test' => [
        'class'    => \App\Processes\TestProcess::class,
        'redirect' => false,
        'pipe'     => 1,
    ],
],

// app/Processes/TestProcess.php
public static function callback(Server $swoole, Process $process)
{
    while ($data = $process->read()) {
        \Log::info('TestProcess: read data', [$data]);
        $process->write('TestProcess: ' . $data);
    }
}

// app/Http/Controllers/TestController.php
public function testProcessWrite()
{
    /**@var \Swoole\Process $process */
    $process = app('swoole')->customProcesses['test'];
    $process->write('TestController: write data' . time());
    var_dump($process->read());
}

Common components

Apollo

LaravelS will pull the Apollo configuration and write it to the .env file when starting. At the same time, LaravelS will start the custom process apollo to monitor the configuration and automatically reload when the configuration changes.

Enable Apollo: add --enable-apollo and Apollo parameters to the startup parameters.

php bin/laravels start --enable-apollo --apollo-server=http://127.0.0.1:8080 --apollo-app-id=LARAVEL-S-TEST

Support hot updates(optional).

// Edit `config/laravels.php`
'processes' => Hhxsv5\LaravelS\Components\Apollo\Process::getDefinition(),

// When there are other custom process configurations
'processes' => [
    'test' => [
        'class'    => \App\Processes\TestProcess::class,
        'redirect' => false,
        'pipe'     => 1,
    ],
    // ...
] + Hhxsv5\LaravelS\Components\Apollo\Process::getDefinition(),

List of available parameters.

Parameter	Description	Default	Demo
apollo-server	Apollo server URL	-	--apollo-server=http://127.0.0.1:8080
apollo-app-id	Apollo APP ID	-	--apollo-app-id=LARAVEL-S-TEST
apollo-namespaces	The namespace to which the APP belongs, support specify the multiple	application	--apollo-namespaces=application --apollo-namespaces=env
apollo-cluster	The cluster to which the APP belongs	default	--apollo-cluster=default
apollo-client-ip	IP of current instance, can also be used for grayscale publishing	Local intranet IP	--apollo-client-ip=10.2.1.83
apollo-pull-timeout	Timeout time(seconds) when pulling configuration	5	--apollo-pull-timeout=5
apollo-backup-old-env	Whether to backup the old configuration file when updating the configuration file .env	false	--apollo-backup-old-env

Prometheus

Support Prometheus monitoring and alarm, Grafana visually view monitoring metrics. Please refer to Docker Compose for the environment construction of Prometheus and Grafana.

Require extension APCu >= 5.0.0, please install it by pecl install apcu.

Copy the configuration file prometheus.php to the config directory of your project. Modify the configuration as appropriate.

# Execute commands in the project root directory
cp vendor/hhxsv5/laravel-s/config/prometheus.php config/

If your project is Lumen, you also need to manually load the configuration $app->configure('prometheus'); in bootstrap/app.php.

Configure global middleware: Hhxsv5\LaravelS\Components\Prometheus\RequestMiddleware::class. In order to count the request time consumption as accurately as possible, RequestMiddleware must be the first global middleware, which needs to be placed in front of other middleware.

Register ServiceProvider: Hhxsv5\LaravelS\Components\Prometheus\ServiceProvider::class.

Configure the CollectorProcess in config/laravels.php to collect the metrics of Swoole Worker/Task/Timer processes regularly.

'processes' => Hhxsv5\LaravelS\Components\Prometheus\CollectorProcess::getDefinition(),

Create the route to output metrics.

use Hhxsv5\LaravelS\Components\Prometheus\Exporter;

Route::get('/actuator/prometheus', function () {
    $result = app(Exporter::class)->render();
    return response($result, 200, ['Content-Type' => Exporter::REDNER_MIME_TYPE]);
});

Complete the configuration of Prometheus and start it.

global:
  scrape_interval: 5s
  scrape_timeout: 5s
  evaluation_interval: 30s
scrape_configs:
- job_name: laravel-s-test
  honor_timestamps: true
  metrics_path: /actuator/prometheus
  scheme: http
  follow_redirects: true
  static_configs:
  - targets:
    - 127.0.0.1:5200 # The ip and port of the monitored service
# Dynamically discovered using one of the supported service-discovery mechanisms
# https://prometheus.io/docs/prometheus/latest/configuration/configuration/#scrape_config
# - job_name: laravels-eureka
#   honor_timestamps: true
#   scrape_interval: 5s
#   metrics_path: /actuator/prometheus
#   scheme: http
#   follow_redirects: true
  # eureka_sd_configs:
  # - server: http://127.0.0.1:8080/eureka
  #   follow_redirects: true
  #   refresh_interval: 5s

Start Grafana, then import panel json.

Other features

Configure Swoole events

Supported events:

Event	Interface	When happened
ServerStart	Hhxsv5\LaravelS\Swoole\Events\ServerStartInterface	Occurs when the Master process is starting, this event should not handle complex business logic, and can only do some simple work of initialization.
ServerStop	Hhxsv5\LaravelS\Swoole\Events\ServerStopInterface	Occurs when the server exits normally, CANNOT use async or coroutine related APIs in this event.
WorkerStart	Hhxsv5\LaravelS\Swoole\Events\WorkerStartInterface	Occurs after the Worker/Task process is started, and the Laravel initialization has been completed.
WorkerStop	Hhxsv5\LaravelS\Swoole\Events\WorkerStopInterface	Occurs after the Worker/Task process exits normally
WorkerError	Hhxsv5\LaravelS\Swoole\Events\WorkerErrorInterface	Occurs when an exception or fatal error occurs in the Worker/Task process

1.Create an event class to implement the corresponding interface.

namespace App\Events;
use Hhxsv5\LaravelS\Swoole\Events\ServerStartInterface;
use Swoole\Atomic;
use Swoole\Http\Server;
class ServerStartEvent implements ServerStartInterface
{
    public function __construct()
    {
    }
    public function handle(Server $server)
    {
        // Initialize a global counter (available across processes)
        $server->atomicCount = new Atomic(2233);

        // Invoked in controller: app('swoole')->atomicCount->get();
    }
}

namespace App\Events;
use Hhxsv5\LaravelS\Swoole\Events\WorkerStartInterface;
use Swoole\Http\Server;
class WorkerStartEvent implements WorkerStartInterface
{
    public function __construct()
    {
    }
    public function handle(Server $server, $workerId)
    {
        // Initialize a database connection pool
        // DatabaseConnectionPool::init();
    }
}

2.Configuration.

// Edit `config/laravels.php`
'event_handlers' => [
    'ServerStart' => [\App\Events\ServerStartEvent::class], // Trigger events in array order
    'WorkerStart' => [\App\Events\WorkerStartEvent::class],
],

Serverless

Alibaba Cloud Function Compute

Function Compute.

1.Modify bootstrap/app.php and set the storage directory. Because the project directory is read-only, the /tmp directory can only be read and written.

$app->useStoragePath(env('APP_STORAGE_PATH', '/tmp/storage'));

2.Create a shell script laravels_bootstrap and grant executable permission.

#!/usr/bin/env bash
set +e

# Create storage-related directories
mkdir -p /tmp/storage/app/public
mkdir -p /tmp/storage/framework/cache
mkdir -p /tmp/storage/framework/sessions
mkdir -p /tmp/storage/framework/testing
mkdir -p /tmp/storage/framework/views
mkdir -p /tmp/storage/logs

# Set the environment variable APP_STORAGE_PATH, please make sure it's the same as APP_STORAGE_PATH in .env
export APP_STORAGE_PATH=/tmp/storage

# Start LaravelS
php bin/laravels start

3.Configure template.xml.

ROSTemplateFormatVersion: '2015-09-01'
Transform: 'Aliyun::Serverless-2018-04-03'
Resources:
  laravel-s-demo:
    Type: 'Aliyun::Serverless::Service'
    Properties:
      Description: 'LaravelS Demo for Serverless'
    fc-laravel-s:
      Type: 'Aliyun::Serverless::Function'
      Properties:
        Handler: laravels.handler
        Runtime: custom
        MemorySize: 512
        Timeout: 30
        CodeUri: ./
        InstanceConcurrency: 10
        EnvironmentVariables:
          BOOTSTRAP_FILE: laravels_bootstrap

Important notices

Singleton Issue

Under FPM mode, singleton instances will be instantiated and recycled in every request, request start=>instantiate instance=>request end=>recycled instance.

Under Swoole Server, All singleton instances will be held in memory, different lifetime from FPM, request start=>instantiate instance=>request end=>do not recycle singleton instance. So need developer to maintain status of singleton instances in every request.

Common solutions:

Write a XxxCleaner class to clean up the singleton object state. This class implements the interface Hhxsv5\LaravelS\Illuminate\Cleaners\CleanerInterface and then registers it in cleaners of laravels.php.

Reset status of singleton instances by Middleware.

Re-register ServiceProvider, add XxxServiceProvider into register_providers of file laravels.php. So that reinitialize singleton instances in every request Refer.

Cleaners

Configuration cleaners.

Known issues

Known issues: a package of known issues and solutions.

Debugging method

Logging; if you want to output to the console, you can use stderr, Log::channel('stderr')->debug('debug message').

Laravel Dump Server(Laravel 5.7 has been integrated by default).

Read request

Read request by Illuminate\Http\Request Object, $_ENV is readable, $_SERVER is partially readable, CANNOT USE $_GET/$_POST/$_FILES/$_COOKIE/$_REQUEST/$_SESSION/$GLOBALS.

public function form(\Illuminate\Http\Request $request)
{
    $name = $request->input('name');
    $all = $request->all();
    $sessionId = $request->cookie('sessionId');
    $photo = $request->file('photo');
    // Call getContent() to get the raw POST body, instead of file_get_contents('php://input')
    $rawContent = $request->getContent();
    //...
}

Output response

Respond by Illuminate\Http\Response Object, compatible with echo/vardump()/print_r()，CANNOT USE functions dd()/exit()/die()/header()/setcookie()/http_response_code().

public function json()
{
    return response()->json(['time' => time()])->header('header1', 'value1')->withCookie('c1', 'v1');
}

Persistent connection

Singleton connection will be resident in memory, it is recommended to turn on persistent connection for better performance.

1. Database connection, it will reconnect automatically immediately after disconnect.

// config/database.php
'connections' => [
    'my_conn' => [
        'driver'    => 'mysql',
        'host'      => env('DB_MY_CONN_HOST', 'localhost'),
        'port'      => env('DB_MY_CONN_PORT', 3306),
        'database'  => env('DB_MY_CONN_DATABASE', 'forge'),
        'username'  => env('DB_MY_CONN_USERNAME', 'forge'),
        'password'  => env('DB_MY_CONN_PASSWORD', ''),
        'charset'   => 'utf8mb4',
        'collation' => 'utf8mb4_unicode_ci',
        'prefix'    => '',
        'strict'    => false,
        'options'   => [
            // Enable persistent connection
            \PDO::ATTR_PERSISTENT => true,
        ],
    ],
],

1. Redis connection, it won't reconnect automatically immediately after disconnect, and will throw an exception about lost connection, reconnect next time. You need to make sure that SELECT DB correctly before operating Redis every time.

// config/database.php
'redis' => [
    'client' => env('REDIS_CLIENT', 'phpredis'), // It is recommended to use phpredis for better performance.
    'default' => [
        'host'       => env('REDIS_HOST', 'localhost'),
        'password'   => env('REDIS_PASSWORD', null),
        'port'       => env('REDIS_PORT', 6379),
        'database'   => 0,
        'persistent' => true, // Enable persistent connection
    ],
],

About memory leaks

Avoid using global variables. If necessary, please clean or reset them manually.

Infinitely appending element into static/global variable will lead to OOM(Out of Memory).

class Test
{
    public static $array = [];
    public static $string = '';
}

// Controller
public function test(Request $req)
{
    // Out of Memory
    Test::$array[] = $req->input('param1');
    Test::$string .= $req->input('param2');
}

Memory leak detection method

Modify config/laravels.php: worker_num=1, max_request=1000000, remember to change it back after test;

Add routing /debug-memory-leak without route middleware to observe the memory changes of the Worker process;

Start LaravelS and request /debug-memory-leak until diff_mem is less than or equal to zero; if diff_mem is always greater than zero, it means that there may be a memory leak in Global Middleware or Laravel Framework;

After completing Step 3, alternately request the business routes and /debug-memory-leak (It is recommended to use ab/wrk to make a large number of requests for business routes), the initial increase in memory is normal. After a large number of requests for the business routes, if diff_mem is always greater than zero and curr_mem continues to increase, there is a high probability of memory leak; If curr_mem always changes within a certain range and does not continue to increase, there is a low probability of memory leak.

If you still can't solve it, max_request is the last guarantee.

Linux kernel parameter adjustment

Linux kernel parameter adjustment

Pressure test

Pressure test

Alternatives

• swooletw/laravel-swoole

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Author: hhxsv5
Source Code: https://github.com/hhxsv5/laravel-s 
License: MIT License

#php #laravel #http