/usr/lib/python3/dist-packages/glances/core/glances_main.py is in glances 2.1.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# This file is part of Glances.
#
# Copyright (C) 2014 Nicolargo <nicolas@nicolargo.com>
#
# Glances is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Glances is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""Glances main class."""
# Import system libs
import argparse
import sys
# Import Glances libs
from glances.core.glances_config import Config
from glances.core.glances_globals import appname, psutil_version, version, logger
class GlancesMain(object):
"""Main class to manage Glances instance."""
# Default stats' refresh time is 3 seconds
refresh_time = 3
# Set the default cache lifetime to 1 second (only for server)
# !!! Todo: configuration from the command line
cached_time = 1
# By default, Glances is ran in standalone mode (no client/server)
client_tag = False
# Server TCP port number (default is 61209)
server_port = 61209
# Web Server TCP port number (default is 61208)
web_server_port = 61208
# Default username/password for client/server mode
username = "glances"
password = ""
def __init__(self):
"""Manage the command line arguments."""
self.args = self.parse_args()
def init_args(self):
"""Init all the command line arguments."""
_version = "Glances v" + version + " with psutil v" + psutil_version
parser = argparse.ArgumentParser(prog=appname, conflict_handler='resolve')
parser.add_argument('-V', '--version', action='version', version=_version)
parser.add_argument('-d', '--debug', action='store_true', default=False,
dest='debug', help=_('Enable debug mode'))
parser.add_argument('-C', '--config', dest='conf_file',
help=_('path to the configuration file'))
# Enable or disable option on startup
parser.add_argument('--enable-history', action='store_true', default=False,
dest='enable_history', help=_('enable the history mode'))
parser.add_argument('--disable-bold', action='store_false', default=True,
dest='disable_bold', help=_('disable bold mode in the terminal'))
parser.add_argument('--disable-diskio', action='store_true', default=False,
dest='disable_diskio', help=_('disable disk I/O module'))
parser.add_argument('--disable-fs', action='store_true', default=False,
dest='disable_fs', help=_('disable filesystem module'))
parser.add_argument('--disable-network', action='store_true', default=False,
dest='disable_network', help=_('disable network module'))
parser.add_argument('--disable-sensors', action='store_true', default=False,
dest='disable_sensors', help=_('disable sensors module'))
parser.add_argument('--disable-process', action='store_true', default=False,
dest='disable_process', help=_('disable process module'))
parser.add_argument('--disable-process-extended', action='store_true', default=False,
dest='disable_process_extended', help=_('disable extended stats on top process'))
parser.add_argument('--disable-log', action='store_true', default=False,
dest='disable_log', help=_('disable log module'))
# CSV output feature
parser.add_argument('--output-csv', default=None,
dest='output_csv', help=_('export stats to a CSV file'))
# Client/Server option
parser.add_argument('-c', '--client', dest='client',
help=_('connect to a Glances server by IPv4/IPv6 address or hostname'))
parser.add_argument('-s', '--server', action='store_true', default=False,
dest='server', help=_('run Glances in server mode'))
parser.add_argument('-p', '--port', default=None, type=int, dest='port',
help=_('define the client/server TCP port [default: {0}]').format(self.server_port))
parser.add_argument('-B', '--bind', default='0.0.0.0', dest='bind_address',
help=_('bind server to the given IPv4/IPv6 address or hostname'))
parser.add_argument('--password-badidea', dest='password_arg',
help=_('define password from the command line'))
parser.add_argument('--password', action='store_true', default=False, dest='password_prompt',
help=_('define a client/server password from the prompt or file'))
parser.add_argument('--snmp-community', default='public', dest='snmp_community',
help=_('SNMP community'))
parser.add_argument('--snmp-port', default=161, type=int,
dest='snmp_port', help=_('SNMP port'))
parser.add_argument('--snmp-version', default='2c', dest='snmp_version',
help=_('SNMP version (1, 2c or 3)'))
parser.add_argument('--snmp-user', default='private', dest='snmp_user',
help=_('SNMP username (only for SNMPv3)'))
parser.add_argument('--snmp-auth', default='password', dest='snmp_auth',
help=_('SNMP authentication key (only for SNMPv3)'))
parser.add_argument('--snmp-force', action='store_true', default=False,
dest='snmp_force', help=_('force SNMP mode'))
parser.add_argument('-t', '--time', default=self.refresh_time, type=float,
dest='time', help=_('set refresh time in seconds [default: {0} sec]').format(self.refresh_time))
parser.add_argument('-w', '--webserver', action='store_true', default=False,
dest='webserver', help=_('run Glances in web server mode'))
# Display options
parser.add_argument('-f', '--process-filter', default=None, type=str,
dest='process_filter', help=_('set the process filter patern (regular expression)'))
parser.add_argument('--process-short-name', action='store_true', default=False,
dest='process_short_name', help=_('force short name for processes name'))
parser.add_argument('-b', '--byte', action='store_true', default=False,
dest='byte', help=_('display network rate in byte per second'))
parser.add_argument('-1', '--percpu', action='store_true', default=False,
dest='percpu', help=_('start Glances in per CPU mode'))
parser.add_argument('--theme-white', action='store_true', default=False,
dest='theme_white', help=_('optimize display for white background'))
return parser
def parse_args(self):
"""Parse command line arguments."""
args = self.init_args().parse_args()
# Load the configuration file, if it exists
self.config = Config(args.conf_file)
# Debug mode
if args.debug:
from logging import DEBUG
logger.setLevel(DEBUG)
# Client/server Port
if args.port is None:
if args.webserver:
args.port = self.web_server_port
else:
args.port = self.server_port
# In web server mode, defaul refresh time: 5 sec
if args.webserver:
args.time = 5
# Server or client login/password
args.username = self.username
if args.password_arg is not None:
from hashlib import sha256
# Password is given as an argument
# Hash with SHA256
# Only the SHA will be transmit on the network
args.password = sha256(args.password_arg).hexdigest()
elif args.password_prompt:
# Interactive or file password
if args.server:
args.password = self.__get_password(
description=_("Define the password for the Glances server"),
confirm=True)
elif args.client:
args.password = self.__get_password(
description=_("Enter the Glances server password"),
clear=True)
else:
# Default is no password
args.password = self.password
# By default help is hidden
args.help_tag = False
# Display Rx and Tx, not the sum for the network
args.network_sum = False
args.network_cumul = False
# Control parameter and exit if it is not OK
self.args = args
# Filter is only available in standalone mode
if args.process_filter is not None and not self.is_standalone():
logger.critical(_("Process filter is only available in standalone mode"))
sys.exit(2)
return args
def __hash_password(self, plain_password):
"""Hash a plain password and return the hashed one."""
from glances.core.glances_password import GlancesPassword
password = GlancesPassword()
return password.hash_password(plain_password)
def __get_password(self, description='', confirm=False, clear=False):
"""Read a password from the command line.
- if confirm = True, with confirmation
- if clear = True, plain (clear password)
"""
from glances.core.glances_password import GlancesPassword
password = GlancesPassword()
return password.get_password(description, confirm, clear)
def is_standalone(self):
"""Return True if Glances is running in standalone mode."""
return not self.args.client and not self.args.server and not self.args.webserver
def is_client(self):
"""Return True if Glances is running in client mode."""
return self.args.client and not self.args.server
def is_server(self):
"""Return True if Glances is running in server mode."""
return not self.args.client and self.args.server
def is_webserver(self):
"""Return True if Glances is running in Web server mode."""
return not self.args.client and self.args.webserver
def get_config(self):
"""Return configuration file object."""
return self.config
def get_args(self):
"""Return the arguments."""
return self.args
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