live: rewrite hardware inventory command

Replace legacy shell script InventarioHardware for helper functions
from hw_inventory.py

Use get_hardware_inventory to obtain a HardwareInventory object with
the hardware information. Map the HardwareInventory object to a legacy
response string with the legacy_list_hardware_inventory function.

Remove "Chrd-*" file reading logic, it's no longer needed. Legacy shell
script InventarioHardware uses that file.

Expect a change in the structure of hardware inventory response payload
in the future. This patch does not address the HTTP response containing
the hardware inventory as a '\n' separated string of hardware elements.

src/live/ogOperations.py

@@ -31,6 +31,7 @@ from src.utils.disk import *
 from src.utils.cache import generate_cache_txt, umount_cache, init_cache
 from src.utils.tiptorrent import *
 from src.utils.sw_inventory import get_package_set
+from src.utils.hw_inventory import get_hardware_inventory, legacy_list_hardware_inventory
 
 
 OG_SHELL = '/bin/bash'
@@ -274,24 +275,21 @@ class OgLiveOperations:
         # "{package_name} {package_version}"
         return '\n'.join(map(str,pkgset))
 
-    def hardware(self, path, ogRest):
+    def hardware(self, ogRest):
         self._restartBrowser(self._url_log)
+        logging.info('Running hardware inventory command')
 
         try:
-            cmd = f'{ogClient.OG_PATH}interfaceAdm/InventarioHardware {path}'
-            ogRest.proc = subprocess.Popen([cmd],
-                               stdout=subprocess.PIPE,
-                               shell=True,
-                               executable=OG_SHELL)
-            (output, error) = ogRest.proc.communicate()
-        except:
-            logging.error('Exception when running hardware inventory subprocess')
-            raise ValueError('Error: Incorrect command value')
-
+            inventory = get_hardware_inventory()
+        except ValueError as e:
+            logging.error('Error occurred while running get_hardware_inventory')
+            raise e
+        finally:
             self._restartBrowser(self._url)
 
-        logging.info('Hardware inventory command OK')
-        return output.decode('utf-8')
+        result = legacy_list_hardware_inventory(inventory)
+        logging.info('Successful hardware inventory command execution')
+        return result
 
     def setup(self, request, ogRest):
         table_type = request.getType()

src/ogRest.py

@@ -135,16 +135,15 @@ class ogThread():
 		client.send(response.get())
 		ogRest.state = ThreadState.IDLE
 
-	def hardware(client, path, ogRest):
+	def hardware(client, ogRest):
 		try:
-			ogRest.operations.hardware(path, ogRest)
+			result = ogRest.operations.hardware(ogRest)
 		except Exception as e:
 			ogRest.send_internal_server_error(client, exc=e)
 			return
 
 		json_body = jsonBody()
-		with open(path, 'r') as f:
-			json_body.add_element('hardware', f.read())
+		json_body.add_element('hardware', result)
 
 		response = restResponse(ogResponses.OK, json_body)
 		client.send(response.get())
@@ -399,8 +398,7 @@ class ogRest():
 		threading.Thread(target=ogThread.software, args=(client, request, path, self,)).start()
 
 	def process_hardware(self, client):
-		path = '/tmp/Chrd-' + client.ip
-		threading.Thread(target=ogThread.hardware, args=(client, path, self,)).start()
+		threading.Thread(target=ogThread.hardware, args=(client, self,)).start()
 
 	def process_schedule(self, client):
 		response = restResponse(ogResponses.OK)