In Laravel 6, after setting the static variable, it is not cleared when it is obtained in the next queue task, and will be used as a solution
1. Reference:https://www.shuijingwanwq.com/2022/07/15/6796/. In Laravel 6’s queue task, processing when the task fails (set and get static variables). However, there is a bug that will be used if it is not reset in the next queue task. Print static variables in 2 tasks separately: self::$destination. It is expected that the destination of 755 is null, but it uses the value of 754. as shown in Figure 1
Figure 1
private static ?string $destination = null; // 解压缩 ZIP 文件后的目录
Log::info(
'destination',
[
'id' => $this->themeInstallationTask->id,
'destination' => self::$destination
]
);
[2023-04-14 13:37:18] local.INFO: uploadThemeAssetToCdn {
"id": 754,
"destination": "E:\\wwwroot\\object\\storage\\app/theme_downloads/2023/04/14/1681450622.2291.583840996"
}
[2023-04-14 13:38:06] local.INFO: uploadThemeAssetToCdn {
"id": 755,
"destination": "E:\\wwwroot\\object\\storage\\app/theme_downloads/2023/04/14/1681450622.2291.583840996"
}
2. If in the next queue task, if there is a reset static variable to null, it will be overwritten, and print the static variables in 2 tasks: self::$destination. in line with expectations. as shown in Figure 2
Figure 2
private static ?string $destination = null; // 解压缩 ZIP 文件后的目录
self::$destination = null;
Log::info(
'uploadThemeAssetToCdn',
[
'id' => $this->themeInstallationTask->id,
'destination' => self::$destination
]
);
[2023-04-14 13:44:46] local.INFO: uploadThemeAssetToCdn {
"id": 756,
"destination": "E:\\wwwroot\\object\\storage\\app/theme_downloads/2023/04/14/1681451070.5331.338264899"
}
[2023-04-14 13:45:34] local.INFO: uploadThemeAssetToCdn {
"id": 757,
"destination": null
}
3. However, reference: In Laravel 6, in the queue task, the implementation of the exponential backoff on retry. When you want to pass static variables to the next queue task, it still causes problems with each other. In the handle method, the expected value of 760 is not null , but it has now been overwritten by 761’s null . as shown in Figure 3
Figure 3
private static ?string $absolutePath; // 待解压缩的 ZIP 文件的绝对路径
private static ?string $destination; // 解压缩 ZIP 文件后的目录
/**
* Create a new job instance.
*
* @return void
*/
public function __construct(ThemeInstallationTask $themeInstallationTask, ?string $absolutePath, ?string $destination)
{
// 队列任务构造器中接收了 Eloquent 模型，将会只序列化模型的 ID
$this->themeInstallationTask = $themeInstallationTask;
self::$absolutePath = $absolutePath;
self::$destination = $destination;
Log::info(
'construct',
[
'id' => $this->themeInstallationTask->id,
'destination' => self::$destination
]
);
}
/**
* Execute the job.
*
* @return void
* @throws OverflowException
*/
public function handle()
{
Log::info(
'handle',
[
'id' => $this->themeInstallationTask->id,
'destination' => self::$destination
]
);
}
PS E:\wwwroot\object> php artisan queue:work
[2023-04-14 14:06:03][ACuiiTG0Ptuo5Tl3iMCPnREKYZhGTva3] Processing: Jobs\ThemeInstalling
[2023-04-14 14:06:50][ACuiiTG0Ptuo5Tl3iMCPnREKYZhGTva3] Processed: Jobs\ThemeInstalling
[2023-04-14 14:06:50][xcL1KIALWlYy9edrKD3GpqkWOzCbudSu] Processing: Jobs\ThemeInstalling
[2023-04-14 14:07:22][xcL1KIALWlYy9edrKD3GpqkWOzCbudSu] Processed: Jobs\ThemeInstalling
[2023-04-14 14:07:22][Ff7Pcd8szupQYVAO2BkQhGJxyoQKrpo8] Processing: Jobs\ThemeAssetUploading
[2023-04-14 14:07:42][Ff7Pcd8szupQYVAO2BkQhGJxyoQKrpo8] Processed: Jobs\ThemeAssetUploading
[2023-04-14 14:07:42][Nyc3IPP2mXHz3Hl2tT4RADsKNTAhxf1l] Processing: Jobs\ThemeAssetUploading
[2023-04-14 14:07:45][Nyc3IPP2mXHz3Hl2tT4RADsKNTAhxf1l] Processed: Jobs\ThemeAssetUploading
[2023-04-14 14:07:45][gaMvLrJttc4Ws1qu2rAAsORFGAfPNZmq] Processing: Jobs\ThemeInstalled
[2023-04-14 14:07:45][gaMvLrJttc4Ws1qu2rAAsORFGAfPNZmq] Processed: Jobs\ThemeInstalled
[2023-04-14 14:07:45][QALQV7djT9caKVH50HHZLe0x3OScalBP] Processing: Jobs\ThemeInstalled
[2023-04-14 14:07:45][QALQV7djT9caKVH50HHZLe0x3OScalBP] Processed: Jobs\ThemeInstalled
[2023-04-14 14:06:19] local.INFO: uploadThemeAssetToCdn {
"id": 760,
"destination": "E:\\wwwroot\\object\\storage\\app/theme_downloads/2023/04/14/1681452363.3555.1473533151"
}
[2023-04-14 14:06:19] local.INFO: construct {
"id": 760,
"destination": "E:\\wwwroot\\object\\storage\\app/theme_downloads/2023/04/14/1681452363.3555.1473533151"
}
[2023-04-14 14:06:53] local.INFO: uploadThemeAssetToCdn {
"id": 761,
"destination": null
}
[2023-04-14 14:06:53] local.INFO: construct {
"id": 761,
"destination": null
}
[2023-04-14 14:07:22] local.INFO: handle {
"id": 760,
"destination": null
}
[2023-04-14 14:07:22] local.INFO: destination {
"id": 760,
"destination": null
}
[2023-04-14 14:07:42] local.INFO: destination {
"id": 760,
"destination": null
}
[2023-04-14 14:07:42] local.INFO: handle {
"id": 761,
"destination": null
}
[2023-04-14 14:07:42] local.INFO: destination {
"id": 761,
"destination": null
}
[2023-04-14 14:07:45] local.INFO: destination {
"id": 761,
"destination": null
}
4. Finally decide to give up the use of static variables, and store the corresponding values in the MySQL table record related to the queue task. Queue tasks no longer affect each other, in line with expectations. as shown in Figure 4
Figure 4
{
"theme_download_paths": {
"zip_path": "/theme_downloads/2023/04/17/1681696283.1861.462360447.zip",
"destination": "/theme_downloads/2023/04/17/1681696283.1861.462360447"
}
}
PS E:\wwwroot\object> php artisan queue:work
[2023-04-17 09:51:22][0Ta6TjtzacnMmI50uh9Ti3s9qfh5c5H1] Processing: Jobs\ThemeInstalling
[2023-04-17 09:52:21][0Ta6TjtzacnMmI50uh9Ti3s9qfh5c5H1] Processed: Jobs\ThemeInstalling
[2023-04-17 09:52:21][dcjXRXkV2XgHdhQrGkYy3Yyq9vy7iiDh] Processing: Jobs\ThemeInstalling
[2023-04-17 09:52:59][dcjXRXkV2XgHdhQrGkYy3Yyq9vy7iiDh] Processed: Jobs\ThemeInstalling
[2023-04-17 09:52:59][v8MkfSZlf6PtoXi8tqNcDb4SXCp6KTGk] Processing: Jobs\ThemeAssetUploading
[2023-04-17 09:53:02][v8MkfSZlf6PtoXi8tqNcDb4SXCp6KTGk] Processed: Jobs\ThemeAssetUploading
[2023-04-17 09:53:02][Zv1ts0pDpCSiTVoWc9WqmszXj5QUYSF6] Processing: Jobs\ThemeAssetUploading
[2023-04-17 09:53:07][Zv1ts0pDpCSiTVoWc9WqmszXj5QUYSF6] Processed: Jobs\ThemeAssetUploading
[2023-04-17 09:53:07][K69thLwVkwnkOccdR778hDdMBAL7U4pD] Processing: Jobs\ThemeInstalled
[2023-04-17 09:53:07][K69thLwVkwnkOccdR778hDdMBAL7U4pD] Processed: Jobs\ThemeInstalled
[2023-04-17 09:53:07][SJPEBLJozJygXiIW9zfJNU1FSGtBmWek] Processing: Jobs\ThemeInstalled
[2023-04-17 09:53:07][SJPEBLJozJygXiIW9zfJNU1FSGtBmWek] Processed: Jobs\ThemeInstalled
[2023-04-17 14:02:50] local.INFO: destination {
"id": 799,
"destination": "E:\\wwwroot\\object\\storage\\app/theme_downloads/2023/04/17/1681711238.5778.1671140645"
}
[2023-04-17 14:02:54] local.INFO: destination {
"id": 799,
"destination": "E:\\wwwroot\\object\\storage\\app/theme_downloads/2023/04/17/1681711238.5778.1671140645"
}
[2023-04-17 14:02:56] local.INFO: destination {
"id": 800,
"destination": null
}
[2023-04-17 14:02:57] local.INFO: destination {
"id": 800,
"destination": null
}
[2023-04-17 14:02:57] local.INFO: destination {
"id": 801,
"destination": "E:\\wwwroot\\object\\storage\\app/theme_downloads/2023/04/17/1681711324.896.2108597779"
}
[2023-04-17 14:02:59] local.INFO: destination {
"id": 801,
"destination": "E:\\wwwroot\\object\\storage\\app/theme_downloads/2023/04/17/1681711324.896.2108597779"
}
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