use lshw for inventory (#58)

* Use lshw for inventory
* Add motherboard to inventory
* Handle non raid devices
* Handle nvme drives

netbox_agent/lshw.py

@@ -0,0 +1,151 @@
+import subprocess
+import json
+import logging
+import sys
+
+from netbox_agent.misc import is_tool
+
+
+class LSHW():
+    def __init__(self):
+        if not is_tool('lshw'):
+            logging.error('lshw does not seem to be installed')
+            sys.exit(1)
+
+        data = subprocess.getoutput(
+            'lshw -quiet -json'
+        )
+        self.hw_info = json.loads(data)
+        self.info = {}
+        self.memories = []
+        self.interfaces = []
+        self.cpus = []
+        self.power = []
+        self.disks = []
+        self.vendor = self.hw_info["vendor"]
+        self.product = self.hw_info["product"]
+        self.chassis_serial = self.hw_info["serial"]
+        self.motherboard_serial = self.hw_info["children"][0].get("serial", "No S/N")
+        self.motherboard = self.hw_info["children"][0].get("product", "Motherboard")
+
+        for k in self.hw_info["children"]:
+            if k["class"] == "power":
+                # self.power[k["id"]] = k
+                self.power.append(k)
+
+            if "children" in k:
+                for j in k["children"]:
+                    if j["class"] == "generic":
+                        continue
+
+                    if j["class"] == "storage":
+                        self.find_storage(j)
+
+                    if j["class"] == "memory":
+                        self.find_memories(j)
+
+                    if j["class"] == "processor":
+                        self.find_cpus(j)
+
+                    if j["class"] == "bridge":
+                        self.walk_bridge(j)
+
+    def get_hw_linux(self, hwclass):
+        if hwclass == "cpu":
+            return self.cpus
+        if hwclass == "network":
+            return self.interfaces
+        if hwclass == 'storage':
+            return self.disks
+        if hwclass == 'memory':
+            return self.memories
+
+    def find_network(self, obj):
+        d = {}
+        d["name"] = obj["logicalname"]
+        d["macaddress"] = obj["serial"]
+        d["serial"] = obj["serial"]
+        d["product"] = obj["product"]
+        d["vendor"] = obj["vendor"]
+        d["description"] = obj["description"]
+
+        self.interfaces.append(d)
+
+    def find_storage(self, obj):
+        if "children" in obj:
+            for device in obj["children"]:
+                d = {}
+                d["logicalname"] = device.get("logicalname")
+                d["product"] = device.get("product")
+                d["serial"] = device.get("serial")
+                d["version"] = device.get("version")
+                d["size"] = device.get("size")
+                d["description"] = device.get("description")
+
+                self.disks.append(d)
+
+        elif "nvme" in obj["configuration"]["driver"]:
+            nvme = json.loads(
+                            subprocess.check_output(["nvme", '-list', '-o', 'json'],
+                            encoding='utf8'))  # noqa: E128
+
+            d = {}
+            d["vendor"] = obj["vendor"]
+            d["version"] = obj["version"]
+            d["product"] = obj["product"]
+
+            d['description'] = "NVME Disk"
+            d['product'] = nvme["Devices"][0]["ModelNumber"]
+            d['size'] = nvme["Devices"][0]["PhysicalSize"]
+            d['serial'] = nvme["Devices"][0]["SerialNumber"]
+            d['logicalname'] = nvme["Devices"][0]["DevicePath"]
+
+            self.disks.append(d)
+
+    def find_cpus(self, obj):
+        c = {}
+        c["product"] = obj["product"]
+        c["vendor"] = obj["vendor"]
+        c["description"] = obj["description"]
+        c["location"] = obj["slot"]
+
+        self.cpus.append(c)
+
+    def find_memories(self, obj):
+        if "children" not in obj:
+            # print("not a DIMM memory.")
+            return
+
+        for dimm in obj["children"]:
+            if "empty" in dimm["description"]:
+                continue
+
+            d = {}
+            d["slot"] = dimm.get("slot")
+            d["description"] = dimm.get("description")
+            d["id"] = dimm.get("id")
+            d["serial"] = dimm.get("serial", 'N/A')
+            d["vendor"] = dimm.get("vendor")
+            d["product"] = dimm.get("product")
+            d["size"] = dimm.get("size", 0) / 2 ** 20 / 1024
+
+            self.memories.append(d)
+
+    def walk_bridge(self, obj):
+        if "children" not in obj:
+            return
+
+        for bus in obj["children"]:
+            if bus["class"] == "storage":
+                self.find_storage(bus)
+
+            if "children" in bus:
+                for b in bus["children"]:
+                    if b["class"] == "storage":
+                        self.find_storage(b)
+                    if b["class"] == "network":
+                        self.find_network(b)
+
+
+if __name__ == "__main__":
+    pass