fix: Corrigir tratamento de caminhos e otimizar a lógica de resposta no CircuitBreaker e LoadShedder

refactor: Ajustar inicialização de localPool e simplificar acesso a estatísticas no DistributedPoolManager

Author: CAFernandes

src/Middleware/CircuitBreaker.php

@@ -117,12 +117,17 @@ private function getCircuitName(Request $request): string
         $path = $request->path ?? $request->getPathCallable();
 
         // Normalize path to circuit name
-        $parts = explode('/', trim($path, '/'));
+        $path = trim($path, '/');
+        if ($path === '') {
+            return 'default';
+        }
+        
+        $parts = explode('/', $path);
 
         // Group by first two segments (e.g., /api/users/* becomes api_users)
         $circuitParts = array_slice($parts, 0, 2);
 
-        return implode('_', $circuitParts) ?: 'default';
+        return implode('_', $circuitParts);
     }
 
     /**

src/Middleware/LoadShedder.php

@@ -355,14 +355,14 @@ private function shedRequest(Response $response, string $priorityClass): Respons
 
         $config = $this->config['shed_response'];
 
-        return $response
+        $response = $response
             ->status($config['status'])
             ->json($config['body'])
             ->header('X-Load-Shed', 'true')
             ->header('X-Load-Shed-Reason', $this->config['shed_strategy']);
 
         foreach ($config['headers'] as $name => $value) {
-            $response->header($name, (string) $value);
+            $response = $response->header($name, (string) $value);
         }
 
         return $response;

src/Performance/HighPerformanceMode.php

@@ -374,12 +374,10 @@ function ($request, $response, $next) {
         }
 
         // Schedule periodic tasks
-        if (self::$monitor) {
-            self::schedulePeriodicTask(
-                self::$currentConfig['monitoring']['export_interval'],
-                [self::$monitor, 'export']
-            );
-        }
+        self::schedulePeriodicTask(
+            self::$currentConfig['monitoring']['export_interval'],
+            [self::$monitor, 'export']
+        );
     }
 
     /**

src/Pool/Distributed/DistributedPoolManager.php

@@ -45,7 +45,7 @@ class DistributedPoolManager
     /**
      * Local pool
      */
-    private DynamicPool $localPool;
+    private ?DynamicPool $localPool = null;
 
     /**
      * State
@@ -172,7 +172,7 @@ private function getInstanceCapabilities(): array
         return [
             'memory_limit' => ini_get('memory_limit'),
             'cpu_cores' => $this->getCPUCores(),
-            'pool_config' => isset($this->localPool) ? $this->localPool->getStats()['config'] : [],
+            'pool_config' => $this->localPool?->getStats()['config'] ?? [],
         ];
     }
 
@@ -483,7 +483,7 @@ private function updateInstanceInfo(): void
             'id' => $this->instanceId,
             'last_seen' => time(),
             'metrics' => $this->metrics,
-            'pool_stats' => $this->localPool ? $this->localPool->getStats() : [],
+            'pool_stats' => $this->localPool?->getStats() ?? [],
             'health' => $this->getHealthStatus(),
         ];
 
@@ -518,7 +518,7 @@ private function participateInLeaderElection(): void
     private function getHealthStatus(): array
     {
         $memoryUsage = memory_get_usage(true) / $this->parseMemoryLimit(ini_get('memory_limit'));
-        $poolStats = $this->localPool ? $this->localPool->getStats() : [];
+        $poolStats = $this->localPool?->getStats() ?? [];
 
         $score = 1.0;