analyze performance upgrade

django_project/IoTAnalyzer/models.py

@@ -128,6 +128,8 @@ class File(models.Model):
     filename = models.CharField(max_length=255)
     ip_address = models.GenericIPAddressField()
     status = models.CharField(max_length=50, default="pending")
+    # Last analysis failure, shown in the UI so nobody has to dig through logs first.
+    error_message = models.TextField(null=True, blank=True)
     upload_time = models.DateTimeField(auto_now_add=True)
 
     def to_json(self):
@@ -137,6 +139,7 @@ class File(models.Model):
             "ip_address": self.ip_address,
             "firmware_version": self.firmware.version,
             "status": self.status,
+            "error_message": self.error_message,
             "upload_time": self.upload_time.isoformat(),
         }