glances.plugins.smart.SmartPlugin.update() - Code Metrics - Inspection of "NVME support" - nicolargo/glances - Measure and Improve Code Quality continuously with Scrutinizer

Test Failed

Pull Request — develop (#3355)

unknown

created 2025-11-23 10:21 UTC

glances.plugins.smart.SmartPlugin.update() A

↳ Parent: glances.plugins.smart

Complexity

Conditions

Size

Total Lines	20
Code Lines	12

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	4
eloc	12
nop	1
dl	0
loc	20
rs	9.8
c	0
b	0
f	0

#
# This file is part of Glances.
#
# Copyright (C) 2018 Tim Nibert <[email protected]>
#
# SPDX-License-Identifier: LGPL-3.0-only
#

"""
Hard disk SMART attributes plugin.
Depends on pySMART and smartmontools
Must execute as root
"usermod -a -G disk USERNAME" is not sufficient unfortunately
SmartCTL (/usr/sbin/smartctl) must be in system path for python2.

Regular PySMART is a python2 library.
We are using the pySMART.smartx updated library to support both python 2 and 3.

If we only have disk group access (no root):
$ smartctl -i /dev/sda
smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.15.0-30-generic] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org


Probable ATA device behind a SAT layer
Try an additional '-d ata' or '-d sat' argument.

This is not very hopeful: https://medium.com/opsops/why-smartctl-could-not-be-run-without-root-7ea0583b1323

So, here is what we are going to do:
Check for admin access.  If no admin access, disable SMART plugin.

If smartmontools is not installed, we should catch the error upstream in plugin initialization.
"""

from glances.globals import is_admin
from glances.logger import logger
from glances.main import disable
from glances.plugins.plugin.model import GlancesPluginModel

# Import plugin specific dependency
try:
    from pySMART import DeviceList
    from pySMART.interface.nvme import NvmeAttributes
except ImportError as e:
    import_error_tag = True
    logger.warning(f"Missing Python Lib ({e}), HDD Smart plugin is disabled")
else:
    import_error_tag = False


def convert_attribute_to_dict(attr):
    return {
        'name': attr.name,
        'num': attr.num,
        'flags': attr.flags,
        'raw': attr.raw,
        'value': attr.value,
        'worst': attr.worst,
        'threshold': attr.thresh,
        'type': attr.type,
        'updated': attr.updated,
        'when_failed': attr.when_failed,
    }

def convert_nvme_attribute_to_dict(key,value):
    return {
        'name': key,
        'value': value,
        'flags': None,
        'raw': value,
        'worst': None,
        'threshold': None,
        'type': None,
        'updated': None,
        'when_failed': None
    }

def get_smart_data():
    """
    Get SMART attribute data
    :return: list of multi leveled dictionaries
             each dict has a key "DeviceName" with the identification of the device in smartctl
             also has keys of the SMART attribute id, with value of another dict of the attributes
             [
                {
                    "DeviceName": "/dev/sda blahblah",
                    "1":
                    {
                        "flags": "..",
                        "raw": "..",
                        etc,
                    }
                    ...
                }
             ]
    """
    stats = []
    # get all devices
    try:
        devlist = DeviceList()
    except TypeError as e:
        # Catch error  (see #1806)
        logger.debug(f'Smart plugin error - Can not grab device list ({e})')
        global import_error_tag
        import_error_tag = True
        return stats

    for dev in devlist.devices:
        stats.append(
            {
                'DeviceName': f'{dev.name} {dev.model}',
            }
        )
        for attribute in dev.attributes:
            if attribute is None:
                pass
            else:
                attrib_dict = convert_attribute_to_dict(attribute)

                # we will use the attribute number as the key
                num = attrib_dict.pop('num', None)
                try:
                    assert num is not None
                except Exception as e:
                    # we should never get here, but if we do, continue to next iteration and skip this attribute
                    logger.debug(f'Smart plugin error - Skip the attribute {attribute} ({e})')
                    continue

                stats[-1][num] = attrib_dict

        if isinstance(dev.if_attributes, NvmeAttributes):
          idx = 0
          for attr in dev.if_attributes.__dict__.keys():
              attrib_dict = convert_nvme_attribute_to_dict(attr,  dev.if_attributes.__dict__[attr])
              idx +=1

              stats[-1][idx] = attrib_dict

    return stats


class SmartPlugin(GlancesPluginModel):
    """Glances' HDD SMART plugin."""

    def __init__(self, args=None, config=None, stats_init_value=[]):
        """Init the plugin."""
        # check if user is admin
        if not is_admin() and args:
            disable(args, "smart")
            logger.debug("Current user is not admin, HDD SMART plugin disabled.")

        super().__init__(args=args, config=config)

        # We want to display the stat in the curse interface
        self.display_curse = True

    @GlancesPluginModel._check_decorator
    @GlancesPluginModel._log_result_decorator
    def update(self):
        """Update SMART stats using the input method."""
        # Init new stats
        stats = self.get_init_value()

        if import_error_tag:
            return self.stats

        if self.input_method == 'local':
            # Update stats and hide some sensors(#2996)
            stats = [s for s in get_smart_data() if self.is_display(s[self.get_key()])]
        elif self.input_method == 'snmp':
            pass

        # Update the stats
        self.stats = stats

        return self.stats

    def get_key(self):
        """Return the key of the list."""
        return 'DeviceName'

    def msg_curse(self, args=None, max_width=None):
        """Return the dict to display in the curse interface."""
        # Init the return message
        ret = []

        # Only process if stats exist...
        if import_error_tag or not self.stats or self.is_disabled():
            return ret

        # Max size for the interface name
        if max_width:
            name_max_width = max_width - 6
        else:
            # No max_width defined, return an empty curse message
            logger.debug(f"No max_width defined for the {self.plugin_name} plugin, it will not be displayed.")
            return ret

        # Header
        msg = '{:{width}}'.format('SMART disks', width=name_max_width)
        ret.append(self.curse_add_line(msg, "TITLE"))
        # Data
        for device_stat in self.stats:
            # New line
            ret.append(self.curse_new_line())
            msg = '{:{width}}'.format(device_stat['DeviceName'][:max_width], width=max_width)
            ret.append(self.curse_add_line(msg))
            try:
                device_stat_sorted = sorted([i for i in device_stat if i != 'DeviceName'], key=int)
            except ValueError:
                # Catch ValueError, see #2904
                device_stat_sorted = [i for i in device_stat if i != 'DeviceName']
            for smart_stat in device_stat_sorted:
                ret.append(self.curse_new_line())
                msg = ' {:{width}}'.format(
                    device_stat[smart_stat]['name'][: name_max_width - 1].replace('_', ' '), width=name_max_width - 1
                )
                ret.append(self.curse_add_line(msg))
                msg = '{:>8}'.format(device_stat[smart_stat]['raw'])
                ret.append(self.curse_add_line(msg))

        return ret


1			#
2			# This file is part of Glances.
3			#
4			# Copyright (C) 2018 Tim Nibert <[email protected]>
5			#
6			# SPDX-License-Identifier: LGPL-3.0-only
7			#
8
9			"""
10			Hard disk SMART attributes plugin.
11			Depends on pySMART and smartmontools
12			Must execute as root
13			"usermod -a -G disk USERNAME" is not sufficient unfortunately
14			SmartCTL (/usr/sbin/smartctl) must be in system path for python2.
15
16			Regular PySMART is a python2 library.
17			We are using the pySMART.smartx updated library to support both python 2 and 3.
18
19			If we only have disk group access (no root):
20			$ smartctl -i /dev/sda
21			smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.15.0-30-generic] (local build)
22			Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org
23
24
25			Probable ATA device behind a SAT layer
26			Try an additional '-d ata' or '-d sat' argument.
27
28			This is not very hopeful: https://medium.com/opsops/why-smartctl-could-not-be-run-without-root-7ea0583b1323
29
30			So, here is what we are going to do:
31			Check for admin access. If no admin access, disable SMART plugin.
32
33			If smartmontools is not installed, we should catch the error upstream in plugin initialization.
34			"""
35
36			from glances.globals import is_admin
37			from glances.logger import logger
38			from glances.main import disable
39			from glances.plugins.plugin.model import GlancesPluginModel
40
41			# Import plugin specific dependency
42			try:
43			from pySMART import DeviceList
44			from pySMART.interface.nvme import NvmeAttributes
45			except ImportError as e:
46			import_error_tag = True
47			logger.warning(f"Missing Python Lib ({e}), HDD Smart plugin is disabled")
48			else:
49			import_error_tag = False
50
51
52			def convert_attribute_to_dict(attr):
53			return {
54			'name': attr.name,
55			'num': attr.num,
56			'flags': attr.flags,
57			'raw': attr.raw,
58			'value': attr.value,
59			'worst': attr.worst,
60			'threshold': attr.thresh,
61			'type': attr.type,
62			'updated': attr.updated,
63			'when_failed': attr.when_failed,
64			}
65
66			def convert_nvme_attribute_to_dict(key,value):
67			return {
68			'name': key,
69			'value': value,
70			'flags': None,
71			'raw': value,
72			'worst': None,
73			'threshold': None,
74			'type': None,
75			'updated': None,
76			'when_failed': None
77			}
78
79			def get_smart_data():
80			"""
81			Get SMART attribute data
82			:return: list of multi leveled dictionaries
83			each dict has a key "DeviceName" with the identification of the device in smartctl
84			also has keys of the SMART attribute id, with value of another dict of the attributes
85			[
86			{
87			"DeviceName": "/dev/sda blahblah",
88			"1":
89			{
90			"flags": "..",
91			"raw": "..",
92			etc,
93			}
94			...
95			}
96			]
97			"""
98			stats = []
99			# get all devices
100			try:
101			devlist = DeviceList()
102			except TypeError as e:
103			# Catch error (see #1806)
104			logger.debug(f'Smart plugin error - Can not grab device list ({e})')
105			global import_error_tag
106			import_error_tag = True
107			return stats
108
109			for dev in devlist.devices:
110			stats.append(
111			{
112			'DeviceName': f'{dev.name} {dev.model}',
113			}
114			)
115			for attribute in dev.attributes:
116			if attribute is None:
117			pass
118			else:
119			attrib_dict = convert_attribute_to_dict(attribute)
120
121			# we will use the attribute number as the key
122			num = attrib_dict.pop('num', None)
123			try:
124			assert num is not None
125			except Exception as e:
126			# we should never get here, but if we do, continue to next iteration and skip this attribute
127			logger.debug(f'Smart plugin error - Skip the attribute {attribute} ({e})')
128			continue
129
130			stats[-1][num] = attrib_dict
131
132			if isinstance(dev.if_attributes, NvmeAttributes):
133			idx = 0
134			for attr in dev.if_attributes.__dict__.keys():
135			attrib_dict = convert_nvme_attribute_to_dict(attr, dev.if_attributes.__dict__[attr])
136			idx +=1
137
138			stats[-1][idx] = attrib_dict
139
140			return stats
141
142
143			class SmartPlugin(GlancesPluginModel):
144			"""Glances' HDD SMART plugin."""
145
146			def __init__(self, args=None, config=None, stats_init_value=[]):
147			"""Init the plugin."""
148			# check if user is admin
149			if not is_admin() and args:
150			disable(args, "smart")
151			logger.debug("Current user is not admin, HDD SMART plugin disabled.")
152
153			super().__init__(args=args, config=config)
154
155			# We want to display the stat in the curse interface
156			self.display_curse = True
157
158			@GlancesPluginModel._check_decorator
159			@GlancesPluginModel._log_result_decorator
160			def update(self):
161			"""Update SMART stats using the input method."""
162			# Init new stats
163			stats = self.get_init_value()
164
165			if import_error_tag:
166			return self.stats
167
168			if self.input_method == 'local':
169			# Update stats and hide some sensors(#2996)
170			stats = [s for s in get_smart_data() if self.is_display(s[self.get_key()])]
171			elif self.input_method == 'snmp':
172			pass
173
174			# Update the stats
175			self.stats = stats
176
177			return self.stats
178
179			def get_key(self):
180			"""Return the key of the list."""
181			return 'DeviceName'
182
183			def msg_curse(self, args=None, max_width=None):
184			"""Return the dict to display in the curse interface."""
185			# Init the return message
186			ret = []
187
188			# Only process if stats exist...
189			if import_error_tag or not self.stats or self.is_disabled():
190			return ret
191
192			# Max size for the interface name
193			if max_width:
194			name_max_width = max_width - 6
195			else:
196			# No max_width defined, return an empty curse message
197			logger.debug(f"No max_width defined for the {self.plugin_name} plugin, it will not be displayed.")
198			return ret
199
200			# Header
201			msg = '{:{width}}'.format('SMART disks', width=name_max_width)
202			ret.append(self.curse_add_line(msg, "TITLE"))
203			# Data
204			for device_stat in self.stats:
205			# New line
206			ret.append(self.curse_new_line())
207			msg = '{:{width}}'.format(device_stat['DeviceName'][:max_width], width=max_width)
208			ret.append(self.curse_add_line(msg))
209			try:
210			device_stat_sorted = sorted([i for i in device_stat if i != 'DeviceName'], key=int)
211			except ValueError:
212			# Catch ValueError, see #2904
213			device_stat_sorted = [i for i in device_stat if i != 'DeviceName']
214			for smart_stat in device_stat_sorted:
215			ret.append(self.curse_new_line())
216			msg = ' {:{width}}'.format(
217			device_stat[smart_stat]['name'][: name_max_width - 1].replace('_', ' '), width=name_max_width - 1
218			)
219			ret.append(self.curse_add_line(msg))
220			msg = '{:>8}'.format(device_stat[smart_stat]['raw'])
221			ret.append(self.curse_add_line(msg))
222
223			return ret
224

nicolargo / glances

Pull Request — develop (#3355)

glances.plugins.smart.SmartPlugin.update() A

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