[ssd_generic]Fix ssd no model information

 modify ssd get health .

Author: hantienEdgecore

sonic_platform_base/sonic_ssd/ssd_generic.py

@@ -125,15 +125,16 @@ def parse_innodisk_info(self):
                 self.temperature = temp_raw.split()[-6]
 
     def parse_virtium_info(self):
-        self.temperature = self._parse_re('Temperature_Celsius\s*\d*\s*(\d+?)\s+', self.vendor_ssd_info)
-        self.health = self._parse_re('Remaining_Life_Left\s*\d*\s*(\d+?)\s+', self.vendor_ssd_info)
-        if self.health == NOT_AVAILABLE:
-            nand_endurance = self._parse_re('NAND_Endurance\s*\d*\s*(\d+?)\s+', self.vendor_ssd_info)
-            avg_erase_count = self._parse_re('Average_Erase_Count\s*\d*\s*(\d+?)\s+', self.vendor_ssd_info)
-            try:
-                self.health = 100 - (float(avg_erase_count) * 100 / float(nand_endurance))
-            except ValueError:
-                pass
+        if self.vendor_ssd_info:
+            self.temperature = self._parse_re('Temperature_Celsius\s*\d*\s*(\d+?)\s+', self.vendor_ssd_info)
+            self.health = self._parse_re('Remaining_Life_Left\s*\d*\s*(\d+?)\s+', self.vendor_ssd_info)
+            if self.health == NOT_AVAILABLE:
+                nand_endurance = self._parse_re('NAND_Endurance\s*\d*\s*(\d+?)\s+', self.vendor_ssd_info)
+                avg_erase_count = self._parse_re('Average_Erase_Count\s*\d*\s*(\d+?)\s+', self.vendor_ssd_info)
+                try:
+                    self.health = 100 - (float(avg_erase_count) * 100 / float(nand_endurance))
+                except (ValueError, ZeroDivisionError):
+                    pass
 
     def fetch_vendor_ssd_info(self, diskdev, model):
         self.vendor_ssd_info = self._execute_shell(self.vendor_ssd_utility[model]["utility"].format(diskdev))