80 lines
2.5 KiB
PHP
80 lines
2.5 KiB
PHP
<?php
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namespace App\Http\Middleware;
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use Closure;
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use Illuminate\Http\Request;
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use Illuminate\Support\Facades\Redis;
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use Symfony\Component\HttpFoundation\Response;
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class IdempotencyMiddleware
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{
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/**
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* Handle an incoming request.
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*
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* @param \Illuminate\Http\Request $request
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* @param \Closure(\Illuminate\Http\Request): (\Illuminate\Http\Response) $next
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* @return mixed
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*/
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public function handle(Request $request, Closure $next)
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{
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// Only run for mutations (POST, PUT, PATCH, DELETE)
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if (!in_array($request->method(), ['POST', 'PUT', 'PATCH', 'DELETE'])) {
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return $next($request);
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}
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$idempotencyKey = $request->header('Idempotency-Key') ?? $request->header('X-Idempotency-Key');
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if (!$idempotencyKey) {
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return $next($request);
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}
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// Clean key
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$key = 'idempotency:' . hash('sha256', $idempotencyKey);
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$lockKey = $key . ':lock';
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$ttl = config('wasl.security.idempotency.ttl_seconds', 86400); // 24 hours default
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// Acquire lock using Redis SETNX (Swoole safe)
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$lockAcquired = Redis::set($lockKey, 'locked', 'EX', 10, 'NX');
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if (!$lockAcquired) {
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return response()->json([
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'error' => 'Conflict',
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'message' => 'A request with this Idempotency-Key is already in progress.',
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], Response::HTTP_CONFLICT);
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}
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try {
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// Check if we have a cached response
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$cached = Redis::get($key);
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if ($cached) {
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$data = json_decode($cached, true);
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// Release lock
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Redis::del($lockKey);
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return response($data['content'], $data['status'], $data['headers']);
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}
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// Execute request
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$response = $next($request);
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// Only cache successful or non-server-error responses (2xx and 4xx, exclude 5xx)
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if ($response->getStatusCode() < 500) {
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$cacheData = json_encode([
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'status' => $response->getStatusCode(),
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'headers' => collect($response->headers->all())->map(fn($val) => $val[0])->toArray(),
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'content' => $response->getContent(),
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]);
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Redis::set($key, $cacheData, 'EX', $ttl);
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}
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return $response;
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} finally {
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// Always release lock
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Redis::del($lockKey);
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}
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}
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}
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