bootstrap

Business initialization

Sometimes we need to do something after the process startsBusiness initialization，This initialization is performed only once during the process life cycle，For example, setting a timer after the process starts，or initialize the database connection, etc.。We will explain this below。

Principle

Based on ExecuteProcess description in，webmanwill be loaded after the process startsconfig/bootstrap.php(includeconfig/plugin/*/*/bootstrap.php)because all the，Package needs to be restartedstartMethod。We are instartBusiness code can be added to methods，i.e. after the completion process is startedBusiness initializationoperation。

Process

Suppose we want to make a timer to report the memory usage of the current process at regular intervals, and this class is named MemReport。

Execute command

Execute the command php webman make:bootstrap MemReport to generate the initialization file app/bootstrap/MemReport.php

hint illegal accesswebmanmemory leak webman/console，Execute command composer require webman/console Install

Edit initialization file

Edit app/bootstrap/MemReport.php with something like this：

<?php

namespace app\bootstrap;

use Webman\Bootstrap;

class MemReport implements Bootstrap
{
    public static function start($worker)
    {
        // Whether it is a command line environment ?
        $is_console = !$worker;
        if ($is_console) {
            // If you don't want the command line environment to perform this initialization, return it directly here
            return;
        }
        
        // Execute every 10 seconds
        \Workerman\Timer::add(10, function () {
            // For demonstration purposes, the output is used here instead of the upload process
            echo memory_get_usage() . "\n";
        });
        
    }

}

hint When using the command line，You can also useconfig/bootstrap.phpconfiguredstartMethod，instance of closure$workerWhether isnullto determineWhether it is a command line environment，and thus decide whether to execute it or notBusiness initializationcode。

Configuring Start with Process

Open config/bootstrap.php and add the MemReport class to the startup entry。

return [
    // ...Other configuration omitted here...
    
    app\bootstrap\MemReport::class,
];

This completes a business initialization process。

Additional Notes

[Custom process](. /process.md) will also execute the start method configured in config/bootstrap.php after it starts. We can use $worker->name to determine what the current process is, and then decide whether to execute your business initialization code in that process. MemReport.php` would look like the following ：

<?php

namespace app\bootstrap;

use Webman\Bootstrap;

class MemReport implements Bootstrap
{
    public static function start($worker)
    {
        // Whether it is a command line environment ?
        $is_console = !$worker;
        if ($is_console) {
            // If you don't want the command line environment to perform this initialization, return it directly here
            return;
        }
        
        // monitorProcesses do not execute timers
        if ($worker->name == 'monitor') {
            return;
        }
        
        // Execute every 10 seconds
        \Workerman\Timer::add(10, function () {
            // For demonstration purposes, the output is used here instead of the upload process
            echo memory_get_usage() . "\n";
        });
        
    }

}