bundles/grafana: replace the useless builtin of telegraf with something more useful

bundles/smartd/files/telegraf_plugin

@@ -0,0 +1,47 @@
+#!/usr/bin/env python
+
+from subprocess import check_output
+from json import loads
+from sys import stderr
+
+devices = check_output(['smartctl', '--scan']).decode().splitlines()
+
+for device in devices:
+    device = device.split(' ')[0]
+
+    try:
+        json = loads(check_output(['smartctl', '-n', 'standby', '-A', '--json=c', device]))
+
+        telegraf_output = set()
+
+        if 'power_on_time' in json:
+            telegraf_output.add('power_on_hours={}'.format(json['power_on_time']['hours']))
+
+        if 'temperature' in json:
+            telegraf_output.add('temperature={}'.format(json['temperature']['current']))
+
+        print('smartd_stats,device={device} {values}'.format(
+            device=device,
+            values=','.join(sorted(telegraf_output)),
+        ))
+
+        telegraf_output = set()
+
+        if 'nvme_smart_health_information_log' in json:
+            for k, v in json['nvme_smart_health_information_log'].items():
+                telegraf_output.add(f'{k}={v}')
+
+        if 'ata_smart_attributes' in json:
+            for entry in json['ata_smart_attributes']['table']:
+                telegraf_output.add('{}={}'.format(
+                    entry['name'],
+                    entry['raw']['value'],
+                ))
+
+        print('smartd_health,device={device},type={type} {values}'.format(
+            device=device,
+            type=json['device']['type'],
+            values=','.join(sorted(telegraf_output)),
+        ))
+    except Exception as e:
+        print(f'{device} {repr(e)}', file=stderr)