ThinkPHP的性能监控怎么做？ThinkPHP如何跟踪请求耗时？

<?php
namespace app\middleware;

use think\facade\Log;

class RequestPerformance
{
    public function handle($request, \Closure $next)
    {
        $startTime = microtime(true); // 记录请求开始时间

        $response = $next($request); // 执行后续中间件和控制器逻辑

        $endTime = microtime(true); // 记录请求结束时间
        $duration = round(($endTime - $startTime) * 1000, 2); // 计算耗时，单位毫秒

        $logContext = [
            'method' => $request->method(),
            'url' => $request->url(),
            'ip' => $request->ip(),
            'duration_ms' => $duration,
            'status' => $response->getCode(),
            // 可以在这里添加更多你关心的信息，比如用户ID、请求参数摘要等
        ];

        // 写入日志，可以定义专门的日志通道
        Log::channel('performance')->info('Request finished', $logContext);

        return $response;
    }
}

<?php
// app/middleware.php
return [
    // 全局中间件
    \app\middleware\RequestPerformance::class,
    // ... 其他中间件
];

// app/event.php 或自定义的事件服务提供者
return [
    'listen' => [
        'app_init' => [\app\listener\AppPerformance::class, 'onAppInit'],
        'app_end' => [\app\listener\AppPerformance::class, 'onAppEnd'],
        'app_exception' => [\app\listener\AppPerformance::class, 'onAppException'], // 异常处理也可以记录
        'think\db\QueryExecuted' => [\app\listener\DbQueryListener::class, 'onQueryExecuted'], // 监听SQL查询
    ],
    // ...
];

// app/listener/DbQueryListener.php
<?php
namespace app\listener;

use think\facade\Log;
use think\db\Query;

class DbQueryListener
{
    public function onQueryExecuted(Query $query)
    {
        // 确保只在生产环境记录，或者根据需求过滤
        if (env('APP_DEBUG', false)) {
            return; // 调试模式下交给Trace显示
        }

        $sql = $query->getLastSql();
        $bindings = $query->getBind();
        $executeTime = $query->getRealSqlTime(); // 获取实际执行时间，单位毫秒

        if ($executeTime > 50) { // 假设超过50毫秒的查询认为是慢查询
            Log::channel('slow_sql')->warning('Slow SQL Query', [
                'sql' => $sql,
                'bindings' => $bindings,
                'time_ms' => $executeTime,
                'connection' => $query->getConnection()->getConfig('name'),
                'request_url' => request()->url(), // 记录当前请求URL，方便定位
            ]);
        }
    }
}

// app/event.php
return [
    'listen' => [
        'think\db\QueryExecuted' => [\app\listener\DbQueryListener::class, 'onQueryExecuted'],
    ],
    // ...
];

<?php
// app/utils/Stopwatch.php
namespace app\utils;

use think\facade\Log;

class Stopwatch
{
    protected static $timers = [];

    public static function start(string $key)
    {
        static::$timers[$key]['start'] = microtime(true);
    }

    public static function stop(string $key, array $context = [])
    {
        if (!isset(static::$timers[$key]['start'])) {
            Log::warning("Stopwatch: Timer '{$key}' not started.");
            return;
        }

        $end = microtime(true);
        $duration = round(($end - static::$timers[$key]['start']) * 1000, 2); // 毫秒

        Log::channel('performance_detail')->info("Code block '{$key}' executed", array_merge([
            'duration_ms' => $duration,
            'request_url' => request()->url(),
        ], $context));

        unset(static::$timers[$key]); // 清理计时器
    }
}

<?php
namespace app\controller;

use app\utils\Stopwatch;
use think\facade\Db;

class UserController
{
    public function getUserDetail($id)
    {
        Stopwatch::start('fetch_user_data');
        $user = Db::name('user')->where('id', $id)->find();
        Stopwatch::stop('fetch_user_data', ['user_id' => $id]);

        Stopwatch::start('process_user_info');
        // 假设这里有一些复杂的业务逻辑或数据处理
        $processedInfo = $this->processComplexData($user);
        Stopwatch::stop('process_user_info');

        return json(['user' => $user, 'info' => $processedInfo]);
    }

    private function processComplexData($user)
    {
        // 模拟耗时操作
        usleep(rand(10000, 50000)); // 10-50毫秒
        return ['status' => 'active', 'level' => 5];
    }
}