解决传null报错的问题

src/Middlewares/GrpcLogger.php

@@ -22,7 +22,8 @@ class GrpcLogger extends Interceptor
      */
     protected $logger;
 
-    public function __construct(LoggerInterface $logger) {
+    public function __construct(LoggerInterface $logger)
+    {
         $this->setLogger($logger);
     }
 

src/Middlewares/GrpcRetry.php

@@ -7,6 +7,7 @@
 use Grpc\UnaryCall;
 use Psr\Log\LoggerInterface;
 use Reatang\GrpcPHPAbstract\Call\ResponseCall;
+use Reatang\GrpcPHPAbstract\Utils\LoggerTrait;
 use const Grpc\STATUS_UNAVAILABLE;
 use const Grpc\STATUS_ABORTED;
 
@@ -17,6 +18,8 @@
  */
 class GrpcRetry extends Interceptor
 {
+    use LoggerTrait;
+
     /** @var int 最大重试次数 */
     protected $maxAttempts;
 
@@ -25,13 +28,6 @@ class GrpcRetry extends Interceptor
 
     protected $retryableStatusCodes = [];
 
-    /**
-     * 日志记录
-     *
-     * @var LoggerInterface
-     */
-    protected $logger;
-
     public function __construct(
         $maxAttempts = 3,
         $delay = 300,
@@ -84,16 +80,4 @@ public function interceptUnaryUnary(
 
         return new ResponseCall(null, $status);
     }
-
-    /**
-     * @param LoggerInterface $logger
-     *
-     * @return $this
-     */
-    public function setLogger(LoggerInterface $logger)
-    {
-        $this->logger = $logger;
-
-        return $this;
-    }
 }

src/Utils/LoggerTrait.php

@@ -10,17 +10,20 @@ trait LoggerTrait
     protected $logger = null;
 
     /**
-     * @param LoggerInterface $logger
+     * @param LoggerInterface|null $logger
      *
-     * @return self
+     * @return $this
      */
-    public function setLogger(LoggerInterface $logger)
+    public function setLogger(?LoggerInterface $logger)
     {
         $this->logger = $logger;
 
         return $this;
     }
 
+    /**
+     * @return LoggerInterface|null
+     */
     protected function getLogger(): ?LoggerInterface
     {
         return $this->logger;