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# |
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# This file is part of Glances. |
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# |
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# SPDX-FileCopyrightText: 2022 Nicolas Hennion <[email protected]> |
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# |
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# SPDX-License-Identifier: LGPL-3.0-only |
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# |
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"""Network plugin.""" |
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import psutil |
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from glances.logger import logger |
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from glances.plugins.plugin.model import GlancesPluginModel |
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# Fields description |
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# description: human readable description |
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# short_name: shortname to use un UI |
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# unit: unit type |
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# rate: if True then compute and add *_gauge and *_rate_per_is fields |
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# min_symbol: Auto unit should be used if value > than 1 'X' (K, M, G)... |
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fields_description = { |
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'interface_name': {'description': 'Interface name.'}, |
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'alias': {'description': 'Interface alias name (optional).'}, |
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'bytes_recv': { |
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'description': 'Number of bytes received.', |
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'rate': True, |
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'unit': 'byte', |
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}, |
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'bytes_sent': { |
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'description': 'Number of bytes sent.', |
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'rate': True, |
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'unit': 'byte', |
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}, |
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'bytes_all': { |
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'description': 'Number of bytes received and sent.', |
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'rate': True, |
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'unit': 'byte', |
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}, |
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'speed': { |
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'description': 'Maximum interface speed (in bit per second). Can return 0 on some operating-system.', |
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'unit': 'bitpersecond', |
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}, |
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'is_up': {'description': 'Is the interface up ?', 'unit': 'bool'}, |
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} |
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# SNMP OID |
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# http://www.net-snmp.org/docs/mibs/interfaces.html |
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# Dict key = interface_name |
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snmp_oid = { |
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'default': { |
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'interface_name': '1.3.6.1.2.1.2.2.1.2', |
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'bytes_recv': '1.3.6.1.2.1.2.2.1.10', |
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'bytes_sent': '1.3.6.1.2.1.2.2.1.16', |
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} |
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} |
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# Define the history items list |
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items_history_list = [ |
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{'name': 'bytes_recv_rate_per_sec', 'description': 'Download rate per second', 'y_unit': 'B/s'}, |
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{'name': 'bytes_sent_rate_per_sec', 'description': 'Upload rate per second', 'y_unit': 'B/s'}, |
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] |
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class PluginModel(GlancesPluginModel): |
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"""Glances network plugin. |
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stats is a list |
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""" |
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def __init__(self, args=None, config=None): |
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"""Init the plugin.""" |
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super().__init__( |
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args=args, |
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config=config, |
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items_history_list=items_history_list, |
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fields_description=fields_description, |
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stats_init_value=[], |
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) |
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# We want to display the stat in the curse interface |
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self.display_curse = True |
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# Hide stats if it has never been != 0 |
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if config is not None: |
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self.hide_zero = config.get_bool_value(self.plugin_name, 'hide_zero', default=False) |
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else: |
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self.hide_zero = False |
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self.hide_zero_fields = ['bytes_recv', 'bytes_sent'] |
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# Add support for automatically hiding network interfaces that are down |
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# or that don't have any IP addresses #2799 |
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self.hide_no_up = config.get_bool_value(self.plugin_name, 'hide_no_up', default=False) |
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self.hide_no_ip = config.get_bool_value(self.plugin_name, 'hide_no_ip', default=False) |
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# Force a first update because we need two updates to have the first stat |
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self.update() |
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self.refresh_timer.set(0) |
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def get_key(self): |
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"""Return the key of the list.""" |
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return 'interface_name' |
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# @GlancesPluginModel._check_decorator |
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@GlancesPluginModel._log_result_decorator |
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def update(self): |
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"""Update network stats using the input method. |
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:return: list of stats dict (one dict per interface) |
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""" |
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if self.input_method == 'local': |
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stats = self.update_local() |
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else: |
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stats = self.get_init_value() |
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# Update the stats |
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self.stats = stats |
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return self.stats |
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@GlancesPluginModel._manage_rate |
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def update_local(self): |
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# Update stats using the standard system lib |
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stats = self.get_init_value() |
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# Grab network interface stat using the psutil net_io_counter method |
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# Example: |
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# { 'veth4cbf8f0a': snetio( |
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# bytes_sent=102038421, bytes_recv=1263258, |
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# packets_sent=25046, packets_recv=14114, |
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# errin=0, errout=0, dropin=0, dropout=0), ... } |
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try: |
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net_io_counters = psutil.net_io_counters(pernic=True) |
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except UnicodeDecodeError as e: |
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logger.debug(f'Can not get network interface counters ({e})') |
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return self.stats |
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# Grab interface's status (issue #765) |
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# Grab interface's speed (issue #718) |
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# Example: |
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# { 'veth4cbf8f0a': snicstats( |
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# isup=True, duplex=<NicDuplex.NIC_DUPLEX_FULL: 2>, |
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# speed=10000, mtu=1500, flags='up,broadcast,running,multicast'), ... } |
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net_status = {} |
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try: |
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net_status = psutil.net_if_stats() |
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net_addrs = psutil.net_if_addrs() |
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except OSError as e: |
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# see psutil #797/glances #1106 |
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logger.debug(f'Can not get network interface status ({e})') |
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# Filter interfaces (related to #2799) |
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if self.hide_no_up: |
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net_status = {k: v for k, v in net_status.items() if v.isup} |
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if self.hide_no_ip: |
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net_status = { |
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k: v |
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for k, v in net_status.items() |
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if k in net_addrs and any(a.family != psutil.AF_LINK for a in net_addrs[k]) |
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} |
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for interface_name, interface_stat in net_io_counters.items(): |
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# Do not take hidden interface into account |
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# or KeyError: 'eth0' when interface is not connected #1348 |
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if not self.is_display(interface_name) or interface_name not in net_status: |
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continue |
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# Filter stats to keep only the fields we want (define in fields_description) |
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# It will also convert psutil objects to a standard Python dict |
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stat = self.filter_stats(interface_stat) |
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stat.update(self.filter_stats(net_status[interface_name])) |
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# Add the key |
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stat['key'] = self.get_key() |
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# Add disk name |
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stat['interface_name'] = interface_name |
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# Add alias define in the configuration file |
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stat['alias'] = self.has_alias(interface_name) |
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# Add sent + revc stats |
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stat['bytes_all'] = stat['bytes_sent'] + stat['bytes_recv'] |
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# Interface speed in Mbps, convert it to bps |
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# Can be always 0 on some OSes |
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stat['speed'] = stat['speed'] * 1048576 |
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stats.append(stat) |
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return stats |
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def update_views(self): |
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"""Update stats views.""" |
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# Call the father's method |
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super().update_views() |
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# Check if the stats should be hidden |
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self.update_views_hidden() |
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# Add specifics information |
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# Alert |
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for i in self.get_raw(): |
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# Skip alert if no timespan to measure |
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if 'bytes_recv_rate_per_sec' not in i or 'bytes_sent_rate_per_sec' not in i: |
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continue |
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# Convert rate to bps (to be able to compare to interface speed) |
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bps_rx = int(i['bytes_recv_rate_per_sec'] * 8) |
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bps_tx = int(i['bytes_sent_rate_per_sec'] * 8) |
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# Decorate the bitrate with the configuration file thresholds |
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if_real_name = i['interface_name'].split(':')[0] |
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alert_rx = self.get_alert(bps_rx, header=if_real_name + '_rx') |
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alert_tx = self.get_alert(bps_tx, header=if_real_name + '_tx') |
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# If nothing is define in the configuration file... |
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# ... then use the interface speed (not available on all systems) |
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if alert_rx == 'DEFAULT' and 'speed' in i and i['speed'] != 0: |
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alert_rx = self.get_alert(current=bps_rx, maximum=i['speed'], header='rx') |
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if alert_tx == 'DEFAULT' and 'speed' in i and i['speed'] != 0: |
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alert_tx = self.get_alert(current=bps_tx, maximum=i['speed'], header='tx') |
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# then decorates |
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self.views[i[self.get_key()]]['bytes_recv']['decoration'] = alert_rx |
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self.views[i[self.get_key()]]['bytes_sent']['decoration'] = alert_tx |
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def msg_curse(self, args=None, max_width=None): |
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"""Return the dict to display in the curse interface.""" |
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# Init the return message |
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ret = [] |
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# Only process if stats exist and display plugin enable... |
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if not self.stats or self.is_disabled(): |
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return ret |
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# Max size for the interface name |
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if max_width: |
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name_max_width = max_width - 12 |
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else: |
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# No max_width defined, return an emptu curse message |
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logger.debug(f"No max_width defined for the {self.plugin_name} plugin, it will not be displayed.") |
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return ret |
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# Header |
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msg = '{:{width}}'.format('NETWORK', width=name_max_width) |
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ret.append(self.curse_add_line(msg, "TITLE")) |
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if args.network_cumul: |
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# Cumulative stats |
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if args.network_sum: |
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# Sum stats |
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msg = '{:>14}'.format('Rx+Tx') |
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ret.append(self.curse_add_line(msg)) |
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else: |
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# Rx/Tx stats |
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msg = '{:>7}'.format('Rx') |
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ret.append(self.curse_add_line(msg)) |
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msg = '{:>7}'.format('Tx') |
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ret.append(self.curse_add_line(msg)) |
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else: |
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# Bitrate stats |
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if args.network_sum: |
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# Sum stats |
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msg = '{:>14}'.format('Rx+Tx/s') |
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ret.append(self.curse_add_line(msg)) |
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else: |
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msg = '{:>7}'.format('Rx/s') |
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ret.append(self.curse_add_line(msg)) |
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msg = '{:>7}'.format('Tx/s') |
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ret.append(self.curse_add_line(msg)) |
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# Interface list (sorted by name) |
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for i in self.sorted_stats(): |
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# Do not display interface in down state (issue #765) |
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if ('is_up' in i) and (i['is_up'] is False): |
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continue |
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# Hide stats if never be different from 0 (issue #1787) |
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if all(self.get_views(item=i[self.get_key()], key=f, option='hidden') for f in self.hide_zero_fields): |
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continue |
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# Format stats |
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# Is there an alias for the interface name ? |
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if i['alias'] is None: |
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if_name = i['interface_name'].split(':')[0] |
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else: |
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if_name = i['alias'] |
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if len(if_name) > name_max_width: |
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# Cut interface name if it is too long |
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if_name = '_' + if_name[-name_max_width + 1 :] |
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if args.byte: |
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# Bytes per second (for dummy) |
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to_bit = 1 |
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unit = '' |
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else: |
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# Bits per second (for real network administrator | Default) |
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to_bit = 8 |
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unit = 'b' |
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if args.network_cumul and 'bytes_recv' in i: |
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rx = self.auto_unit(int(i['bytes_recv'] * to_bit)) + unit |
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tx = self.auto_unit(int(i['bytes_sent'] * to_bit)) + unit |
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ax = self.auto_unit(int(i['bytes_all'] * to_bit)) + unit |
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elif 'bytes_recv_rate_per_sec' in i: |
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rx = self.auto_unit(int(i['bytes_recv_rate_per_sec'] * to_bit)) + unit |
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tx = self.auto_unit(int(i['bytes_sent_rate_per_sec'] * to_bit)) + unit |
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ax = self.auto_unit(int(i['bytes_all_rate_per_sec'] * to_bit)) + unit |
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else: |
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# Avoid issue when a new interface is created on the fly |
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# Example: start Glances, then start a new container |
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continue |
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# New line |
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ret.append(self.curse_new_line()) |
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msg = '{:{width}}'.format(if_name, width=name_max_width) |
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ret.append(self.curse_add_line(msg)) |
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if args.network_sum: |
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msg = f'{ax:>14}' |
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ret.append(self.curse_add_line(msg)) |
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else: |
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msg = f'{rx:>7}' |
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ret.append( |
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self.curse_add_line( |
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msg, self.get_views(item=i[self.get_key()], key='bytes_recv', option='decoration') |
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) |
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) |
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msg = f'{tx:>7}' |
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ret.append( |
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self.curse_add_line( |
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msg, self.get_views(item=i[self.get_key()], key='bytes_sent', option='decoration') |
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) |
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) |
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return ret |
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