MAGNIMEX-392: Stabilize PR 1

Adding the same error twice fixed

Author: Vadim Zubovich

app/code/Magento/ImportExport/Model/Import/ErrorProcessing/ProcessingErrorAggregator.php

@@ -77,6 +77,9 @@ public function addError(
         $errorMessage = null,
         $errorDescription = null
     ) {
+        if ($this->isErrorAlreadyAdded($rowNumber, $errorCode)) {
+            return $this;
+        }
         $this->processErrorStatistics($errorLevel);
         $this->processInvalidRow($rowNumber);
         $errorMessage = $this->getErrorMessage($errorCode, $errorMessage, $columnName);
@@ -227,6 +230,22 @@ public function getErrorsByCode(array $codes)
         return $result;
     }
 
+    /**
+     * @param int $rowNumber
+     * @return ProcessingError[]
+     */
+    public function getErrorByRowNumber($rowNumber)
+    {
+        $result = [];
+        foreach ($this->items as $error) {
+            if ($error->getRowNumber() == (int)$rowNumber) {
+                $result[] = $error;
+            }
+        }
+
+        return $result;
+    }
+
     /**
      * @param array $errorCode
      * @param array $excludedCodes
@@ -289,6 +308,22 @@ public function clear()
         return $this;
     }
 
+    /**
+     * @param int $rowNum
+     * @param string $errorCode
+     * @return bool
+     */
+    protected function isErrorAlreadyAdded($rowNum, $errorCode)
+    {
+        $errors = $this->getErrorsByCode([$errorCode]);
+        foreach ($errors as $error) {
+            if ($rowNum == $error->getRowNumber()) {
+                return true;
+            }
+        }
+        return false;
+    }
+
     /**
      * @param string $errorCode
      * @param string $errorMessage

app/code/Magento/ImportExport/Model/Import/ErrorProcessing/ProcessingErrorAggregatorInterface.php

@@ -90,6 +90,12 @@ public function getAllErrors();
      */
     public function getErrorsByCode(array $codes);
 
+    /**
+     * @param int $rowNumber
+     * @return ProcessingError[]
+     */
+    public function getErrorByRowNumber($rowNumber);
+
     /**
      * @param array $errorCode
      * @param array $excludedCodes