Added timeout parameter

thingsboard_gateway/config/statistics.json

@@ -1,25 +1,31 @@
 [
   {
+    "timeout": 100,
     "command": ["/bin/sh", "-c", "ps -A -o cpu,%mem | awk '{cpu += $1}END{print cpu}'"],
     "attributeOnGateway": "CPU"
   },
   {
+    "timeout": 100,
     "command": ["/bin/sh", "-c", "ps -A -o %cpu,%mem | awk '{mem += $2}END{print mem}'"],
     "attributeOnGateway": "Memory"
   },
   {
+    "timeout": 100,
     "command": ["/bin/sh", "-c", "ipconfig getifaddr en0"],
     "attributeOnGateway": "IP address"
   },
   {
+    "timeout": 100,
     "command": ["/bin/sh", "-c", "sw_vers -productName"],
     "attributeOnGateway": "OS"
   },
   {
+    "timeout": 100,
     "command": ["/bin/sh", "-c", "uptime"],
     "attributeOnGateway": "Uptime"
   },
   {
+    "timeout": 100,
     "command": ["/bin/sh", "-c", "system_profiler SPUSBDataType"],
     "attributeOnGateway": "USBs"
   }

thingsboard_gateway/gateway/statistics_service.py

@@ -34,7 +34,7 @@ class StatisticsService(Thread):
                 data_to_send = {}
                 for attribute in self._config:
                     process = subprocess.run(attribute['command'], stdout=subprocess.PIPE, stderr=subprocess.PIPE,
-                                             encoding='utf-8')
+                                             encoding='utf-8', timeout=attribute['timeout'])
 
                     if process.returncode != 0:
                         self._log.error("Statistic parameter raise the exception: %s", process.stderr)