Fix integrity constraints for database session driver. (#17301)

Backporting fix of issue #9251 to 5.3 branch. Originally by Taylor
Otwell <[email protected]>.

Signed-off-by: Gleb Golubitsky <[email protected]>

src/Illuminate/Session/DatabaseSessionHandler.php

@@ -5,6 +5,7 @@
 use Carbon\Carbon;
 use SessionHandlerInterface;
 use Illuminate\Contracts\Auth\Guard;
+use Illuminate\Database\QueryException;
 use Illuminate\Database\ConnectionInterface;
 use Illuminate\Contracts\Container\Container;
 
@@ -112,18 +113,46 @@ public function write($sessionId, $data)
         }
 
         if ($this->exists) {
-            $this->getQuery()->where('id', $sessionId)->update($payload);
+            $this->performUpdate($sessionId, $payload);
         } else {
-            $payload['id'] = $sessionId;
-
-            $this->getQuery()->insert($payload);
+            $this->performInsert($sessionId, $payload);
         }
 
         $this->exists = true;
 
         return true;
     }
 
+    /**
+     * Perform an insert operation on the session ID.
+     *
+     * @param  string  $sessionId
+     * @param  string  $payload
+     * @return void
+     */
+    protected function performInsert($sessionId, $payload)
+    {
+        try {
+            $payload['id'] = $sessionId;
+
+            return $this->getQuery()->insert($payload);
+        } catch (QueryException $e) {
+            $this->performUpdate($sessionId, $payload);
+        }
+    }
+
+    /**
+     * Perform an update operation on the session ID.
+     *
+     * @param  string  $sessionId
+     * @param  string  $payload
+     * @return int
+     */
+    protected function performUpdate($sessionId, $payload)
+    {
+        return $this->getQuery()->where('id', $sessionId)->update($payload);
+    }
+
     /**
      * Get the default payload for the session.
      *