1. The current implementation is as follows, register events and listeners in the Listen property of the EventServiceProvider. /App/Providers/EventServiceProvider.php
use Illuminate\Cache\Events\CacheHit;
use Illuminate\Cache\Events\CacheMissed;
use Illuminate\Cache\Events\KeyForgotten;
use Illuminate\Cache\Events\KeyWritten;
use App\Listeners\Cache\LogCacheHitListener;
use App\Listeners\Cache\LogCacheMissedListener;
use App\Listeners\Cache\LogKeyForgottenListener;
use App\Listeners\Cache\LogKeyWrittenListener;
class EventServiceProvider extends ServiceProvider
{
/**
* The event listener mappings for the application.
*
* @var array
*/
protected $listen = [
CacheHit::class => [
LogCacheHitListener::class
],
CacheMissed::class => [
LogCacheMissedListener::class
],
KeyForgotten::class => [
LogKeyForgottenListener::class,
],
KeyWritten::class => [
LogKeyWrittenListener::class,
],
];
2. One of the listeners: LogKeyWrittenListener is implemented as follows, /app/Listeners/Cache/LogKeyWrittenListener.php
key, ThemePreviewInterface::THEME_EDITOR_SESSION_PREFIX) !== false) {
Log::debug('theme_editor_session_key_written', [
'key' => $event->key,
'tags' => $event->tags,
'value' => $event->value,
'seconds' => $event->seconds
]);
}
}
}
3. One of the listeners: LogCacheHitListener is implemented as follows, /app/listeners/cache/logCacheHitListener.php
key, ThemePreviewInterface::THEME_EDITOR_SESSION_PREFIX) !== false) {
Log::debug('theme_editor_session_cache_hit', [
'key' => $event->key,
'tags' => $event->tags,
'value' => $event->value
]);
}
}
}
4. Decide to refactor based on event subscribers. Write the event subscriber CacheEventSubscriber to merge 4 listener files into 1.
isThemeEditorSessionLogDebug($event)) {
Log::debug('theme_editor_session_cache_hit', [
'key' => $event->key,
'tags' => $event->tags,
'value' => $event->value
]);
}
}
/**
* 处理缓存未命中事件
*/
public function handleLogCacheMissed($event)
{
if ($this->isThemeEditorSessionLogDebug($event)) {
Log::debug('theme_editor_session_cache_missed', [
'key' => $event->key,
'tags' => $event->tags
]);
}
}
/**
* 处理缓存删除事件
*/
public function handleLogKeyForgotten($event)
{
if ($this->isThemeEditorSessionLogDebug($event)) {
Log::debug('theme_editor_session_key_forgotten', [
'key' => $event->key,
'tags' => $event->tags
]);
}
}
/**
* 处理缓存写入事件
*/
public function handleLogKeyWritten($event)
{
if ($this->isThemeEditorSessionLogDebug($event)) {
Log::debug('theme_editor_session_key_written', [
'key' => $event->key,
'tags' => $event->tags,
'value' => $event->value,
'seconds' => $event->seconds
]);
}
}
/**
* 是否记录主题编辑器 Session 日志
* @return bool
*/
private function isThemeEditorSessionLogDebug($event)
{
return config('app.debug') === true && strpos($event->key, ThemePreviewInterface::THEME_EDITOR_SESSION_PREFIX) !== false;
}
/**
* 为订阅者注册监听器
*
* @param Dispatcher $events
*/
public function subscribe($events)
{
$events->listen(
CacheHit::class,
'App\Listeners\CacheEventSubscriber@handleLogCacheHit'
);
$events->listen(
CacheMissed::class,
'App\Listeners\CacheEventSubscriber@handleLogCacheMissed'
);
$events->listen(
KeyForgotten::class,
'App\Listeners\CacheEventSubscriber@handleLogKeyForgotten'
);
$events->listen(
KeyWritten::class,
'App\Listeners\CacheEventSubscriber@handleLogKeyWritten'
);
}
}
5. Delete events and listeners in the Listen property of the EventServiceProvider, and then add a subscriber to the Subscribe property
class EventServiceProvider extends ServiceProvider
{
/**
* The event listener mappings for the application.
*
* @var array
*/
protected $listen = [
];
protected $subscribe = [
\App\Listeners\CacheEventSubscriber::class
];
6. After testing, there are 4 events, of which the keyforgotten is not triggered when the cache data is used to delete the cached data. When cached data is removed from the cache using the forget method, the keyforgotten is triggered.
Cache::put(ThemePreviewInterface::THEME_EDITOR_SESSION_PREFIX . '20220921', '20220921.value', ThemePreviewInterface::TTL);
Cache::forget(ThemePreviewInterface::THEME_EDITOR_SESSION_PREFIX . '20220921');
[2022-09-21 10:11:12] local.DEBUG: theme_editor_session_key_written {
"key": "theme_editor_session:20220921",
"tags": [],
"value": "20220921.value",
"seconds": 86400
}
[2022-09-21 10:14:19] local.DEBUG: theme_editor_session_key_forgotten {
"key": "theme_editor_session:20220921",
"tags": []
}
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