def start_client(config, args):
"""Start the client mode"""
logger.info("Start client mode")
# Share global var
global client
# Import the Glances client browser module
from glances.client import GlancesClient
# Init the client
client = GlancesClient(config=config, args=args)
# Test if client and server are in the same major version
if not client.login():
logger.critical("The server version is not compatible with the client")
sys.exit(2)
# Start the client loop
client.serve_forever()
# Shutdown the client
client.end()
def __serve_forever(self):
"""Main client loop."""
while True:
# No need to update the server list
# It's done by the GlancesAutoDiscoverListener class (autodiscover.py)
# Or define staticaly in the configuration file (module static_list.py)
# For each server in the list, grab elementary stats (CPU, LOAD, MEM, OS...)
# logger.debug(self.get_servers_list())
try:
for v in self.get_servers_list():
# Do not retreive stats for statics server
# Why ? Because for each offline servers, the timeout will be reached
# So ? The curse interface freezes
if v['type'] == 'STATIC' and v['status'] in [
'UNKNOWN', 'SNMP', 'OFFLINE'
]:
continue
# Get the server URI
uri = self.__get_uri(v)
# Try to connect to the server
t = GlancesClientTransport()
t.set_timeout(3)
# Get common stats
try:
s = ServerProxy(uri, transport=t)
except Exception as e:
logger.warning(
"Client browser couldn't create socket {0}: {1}".
format(uri, e))
else:
# Mandatory stats
try:
# CPU%
cpu_percent = 100 - json.loads(s.getCpu())['idle']
v['cpu_percent'] = '{0:.1f}'.format(cpu_percent)
# MEM%
v['mem_percent'] = json.loads(
s.getMem())['percent']
# OS (Human Readable name)
v['hr_name'] = json.loads(s.getSystem())['hr_name']
except (socket.error, Fault, KeyError) as e:
logger.debug(
"Error while grabbing stats form {0}: {1}".
format(uri, e))
v['status'] = 'OFFLINE'
except ProtocolError as e:
if e.errcode == 401:
# Error 401 (Authentication failed)
# Password is not the good one...
v['password'] = None
v['status'] = 'PROTECTED'
else:
v['status'] = 'OFFLINE'
logger.debug(
"Cannot grab stats from {0} ({1} {2})".format(
uri, e.errcode, e.errmsg))
else:
# Status
v['status'] = 'ONLINE'
# Optional stats (load is not available on Windows OS)
try:
# LOAD
load_min5 = json.loads(s.getLoad())['min5']
v['load_min5'] = '{0:.2f}'.format(load_min5)
except Exception as e:
logger.warning(
"Error while grabbing stats form {0}: {1}".
format(uri, e))
# List can change size during iteration...
except RuntimeError:
logger.debug(
"Server list dictionnary change inside the loop (wait next update)"
)
# Update the screen (list or Glances client)
if self.screen.active_server is None:
# Display the Glances browser
self.screen.update(self.get_servers_list())
else:
# Display the Glances client for the selected server
logger.debug("Selected server: {0}".format(
self.get_servers_list()[self.screen.active_server]))
# Connection can take time
# Display a popup
self.screen.display_popup('Connect to {0}:{1}'.format(
v['name'], v['port']),
duration=1)
# A password is needed to access to the server's stats
if self.get_servers_list()[
self.screen.active_server]['password'] is None:
# First of all, check if a password is available in the [passwords] section
clear_password = self.password.get_password(v['name'])
if (clear_password is None or self.get_servers_list()
[self.screen.active_server]['status'] == 'PROTECTED'):
# Else, the password should be enter by the user
# Display a popup to enter password
clear_password = self.screen.display_popup(
'Password needed for {0}: '.format(v['name']),
is_input=True)
# Store the password for the selected server
if clear_password is not None:
self.set_in_selected(
'password',
self.password.sha256_hash(clear_password))
# Display the Glance client on the selected server
logger.info("Connect Glances client to the {0} server".format(
self.get_servers_list()[self.screen.active_server]['key']))
# Init the client
args_server = self.args
# Overwrite connection setting
args_server.client = self.get_servers_list()[
self.screen.active_server]['ip']
args_server.port = self.get_servers_list()[
self.screen.active_server]['port']
args_server.username = self.get_servers_list()[
self.screen.active_server]['username']
args_server.password = self.get_servers_list()[
self.screen.active_server]['password']
client = GlancesClient(config=self.config,
args=args_server,
return_to_browser=True)
# Test if client and server are in the same major version
if not client.login():
self.screen.display_popup(
"Sorry, cannot connect to '{0}'\n"
"See 'glances.log' for more details".format(v['name']))
# Set the ONLINE status for the selected server
self.set_in_selected('status', 'OFFLINE')
else:
# Start the client loop
# Return connection type: 'glances' or 'snmp'
connection_type = client.serve_forever()
try:
logger.debug(
"Disconnect Glances client from the {0} server".
format(self.get_servers_list()[
self.screen.active_server]['key']))
except IndexError:
# Server did not exist anymore
pass
else:
# Set the ONLINE status for the selected server
if connection_type == 'snmp':
self.set_in_selected('status', 'SNMP')
else:
self.set_in_selected('status', 'ONLINE')
# Return to the browser (no server selected)
self.screen.active_server = None
def main():
"""Main entry point for Glances.
Select the mode (standalone, client or server)
Run it...
"""
# Log Glances and PSutil version
logger.info('Start Glances {0}'.format(__version__))
logger.info('{0} {1} and PSutil {2} detected'.format(
platform.python_implementation(), platform.python_version(),
__psutil_version))
# Share global var
global core, standalone, client, server, webserver
# Create the Glances main instance
core = GlancesMain()
# Catch the CTRL-C signal
signal.signal(signal.SIGINT, __signal_handler)
# Glances can be ran in standalone, client or server mode
if core.is_standalone():
logger.info("Start standalone mode")
# Import the Glances standalone module
from glances.standalone import GlancesStandalone
# Init the standalone mode
standalone = GlancesStandalone(config=core.get_config(),
args=core.get_args())
# Start the standalone (CLI) loop
standalone.serve_forever()
elif core.is_client():
if core.is_client_browser():
logger.info("Start client mode (browser)")
# Import the Glances client browser module
from glances.client_browser import GlancesClientBrowser
# Init the client
client = GlancesClientBrowser(config=core.get_config(),
args=core.get_args())
else:
logger.info("Start client mode")
# Import the Glances client module
from glances.client import GlancesClient
# Init the client
client = GlancesClient(config=core.get_config(),
args=core.get_args())
# Test if client and server are in the same major version
if not client.login():
logger.critical(
"The server version is not compatible with the client")
sys.exit(2)
# Start the client loop
client.serve_forever()
# Shutdown the client
client.end()
elif core.is_server():
logger.info("Start server mode")
# Import the Glances server module
from glances.server import GlancesServer
args = core.get_args()
server = GlancesServer(cached_time=core.cached_time,
config=core.get_config(),
args=args)
print('Glances server is running on {0}:{1}'.format(
args.bind_address, args.port))
# Set the server login/password (if -P/--password tag)
if args.password != "":
server.add_user(args.username, args.password)
# Start the server loop
server.serve_forever()
# Shutdown the server?
server.server_close()
elif core.is_webserver():
logger.info("Start web server mode")
# Import the Glances web server module
from glances.webserver import GlancesWebServer
# Init the web server mode
webserver = GlancesWebServer(config=core.get_config(),
args=core.get_args())
# Start the web server loop
webserver.serve_forever()
def __serve_forever(self):
"""Main client loop."""
while True:
# No need to update the server list
# It's done by the GlancesAutoDiscoverListener class (autodiscover.py)
# Or define staticaly in the configuration file (module static_list.py)
# For each server in the list, grab elementary stats (CPU, LOAD, MEM, OS...)
# logger.debug(self.get_servers_list())
try:
for v in self.get_servers_list():
# Do not retreive stats for statics server
# Why ? Because for each offline servers, the timeout will be reached
# So ? The curse interface freezes
if v['type'] == 'STATIC' and v['status'] in ['UNKNOWN', 'SNMP', 'OFFLINE']:
continue
# Get the server URI
uri = self.__get_uri(v)
# Try to connect to the server
t = GlancesClientTransport()
t.set_timeout(3)
# Get common stats
try:
s = ServerProxy(uri, transport=t)
except Exception as e:
logger.warning(
"Client browser couldn't create socket {0}: {1}".format(uri, e))
else:
# Mandatory stats
try:
# CPU%
cpu_percent = 100 - json.loads(s.getCpu())['idle']
v['cpu_percent'] = '{0:.1f}'.format(cpu_percent)
# MEM%
v['mem_percent'] = json.loads(s.getMem())['percent']
# OS (Human Readable name)
v['hr_name'] = json.loads(s.getSystem())['hr_name']
except (socket.error, Fault, KeyError) as e:
logger.debug(
"Error while grabbing stats form {0}: {1}".format(uri, e))
v['status'] = 'OFFLINE'
except ProtocolError as e:
if e.errcode == 401:
# Error 401 (Authentication failed)
# Password is not the good one...
v['password'] = None
v['status'] = 'PROTECTED'
else:
v['status'] = 'OFFLINE'
logger.debug("Cannot grab stats from {0} ({1} {2})".format(uri, e.errcode, e.errmsg))
else:
# Status
v['status'] = 'ONLINE'
# Optional stats (load is not available on Windows OS)
try:
# LOAD
load_min5 = json.loads(s.getLoad())['min5']
v['load_min5'] = '{0:.2f}'.format(load_min5)
except Exception as e:
logger.warning(
"Error while grabbing stats form {0}: {1}".format(uri, e))
# List can change size during iteration...
except RuntimeError:
logger.debug(
"Server list dictionnary change inside the loop (wait next update)")
# Update the screen (list or Glances client)
if not self.screen.active_server:
# Display the Glances browser
self.screen.update(self.get_servers_list())
else:
# Display the Glances client for the selected server
logger.debug("Selected server: {0}".format(self.get_servers_list()[self.screen.active_server]))
# Connection can take time
# Display a popup
self.screen.display_popup(
'Connect to {0}:{1}'.format(v['name'], v['port']), duration=1)
# A password is needed to access to the server's stats
if self.get_servers_list()[self.screen.active_server]['password'] is None:
# First of all, check if a password is available in the [passwords] section
clear_password = self.password.get_password(v['name'])
if (clear_password is None or self.get_servers_list()
[self.screen.active_server]['status'] == 'PROTECTED'):
# Else, the password should be enter by the user
# Display a popup to enter password
clear_password = self.screen.display_popup(
'Password needed for {0}: '.format(v['name']), is_input=True)
# Store the password for the selected server
if clear_password is not None:
self.set_in_selected('password', self.password.sha256_hash(clear_password))
# Display the Glance client on the selected server
logger.info("Connect Glances client to the {0} server".format(
self.get_servers_list()[self.screen.active_server]['key']))
# Init the client
args_server = self.args
# Overwrite connection setting
args_server.client = self.get_servers_list()[self.screen.active_server]['ip']
args_server.port = self.get_servers_list()[self.screen.active_server]['port']
args_server.username = self.get_servers_list()[self.screen.active_server]['username']
args_server.password = self.get_servers_list()[self.screen.active_server]['password']
client = GlancesClient(config=self.config, args=args_server, return_to_browser=True)
# Test if client and server are in the same major version
if not client.login():
self.screen.display_popup(
"Sorry, cannot connect to '{0}'\n"
"See 'glances.log' for more details".format(v['name']))
# Set the ONLINE status for the selected server
self.set_in_selected('status', 'OFFLINE')
else:
# Start the client loop
# Return connection type: 'glances' or 'snmp'
connection_type = client.serve_forever()
try:
logger.debug("Disconnect Glances client from the {0} server".format(
self.get_servers_list()[self.screen.active_server]['key']))
except IndexError:
# Server did not exist anymore
pass
else:
# Set the ONLINE status for the selected server
if connection_type == 'snmp':
self.set_in_selected('status', 'SNMP')
else:
self.set_in_selected('status', 'ONLINE')
# Return to the browser (no server selected)
self.screen.active_server = None
def __display_server(self, server):
"""
Connect and display the given server
"""
# Display the Glances client for the selected server
logger.debug("Selected server {}".format(server))
# Connection can take time
# Display a popup
self.screen.display_popup('Connect to {}:{}'.format(
server['name'], server['port']),
duration=1)
# A password is needed to access to the server's stats
if server['password'] is None:
# First of all, check if a password is available in the [passwords] section
clear_password = self.password.get_password(server['name'])
if (clear_password is None or self.get_servers_list()[
self.screen.active_server]['status'] == 'PROTECTED'):
# Else, the password should be enter by the user
# Display a popup to enter password
clear_password = self.screen.display_popup(
'Password needed for {}: '.format(server['name']),
is_input=True)
# Store the password for the selected server
if clear_password is not None:
self.set_in_selected('password',
self.password.sha256_hash(clear_password))
# Display the Glance client on the selected server
logger.info("Connect Glances client to the {} server".format(
server['key']))
# Init the client
args_server = self.args
# Overwrite connection setting
args_server.client = server['ip']
args_server.port = server['port']
args_server.username = server['username']
args_server.password = server['password']
client = GlancesClient(config=self.config,
args=args_server,
return_to_browser=True)
# Test if client and server are in the same major version
if not client.login():
self.screen.display_popup("Sorry, cannot connect to '{}'\n"
"See '{}' for more details".format(
server['name'], LOG_FILENAME))
# Set the ONLINE status for the selected server
self.set_in_selected('status', 'OFFLINE')
else:
# Start the client loop
# Return connection type: 'glances' or 'snmp'
connection_type = client.serve_forever()
try:
logger.debug(
"Disconnect Glances client from the {} server".format(
server['key']))
except IndexError:
# Server did not exist anymore
pass
else:
# Set the ONLINE status for the selected server
if connection_type == 'snmp':
self.set_in_selected('status', 'SNMP')
else:
self.set_in_selected('status', 'ONLINE')
# Return to the browser (no server selected)
self.screen.active_server = None
def __display_server(self, server):
"""
Connect and display the given server
"""
# Display the Glances client for the selected server
logger.debug("Selected server {}".format(server))
# Connection can take time
# Display a popup
self.screen.display_popup(
'Connect to {}:{}'.format(server['name'], server['port']), duration=1)
# A password is needed to access to the server's stats
if server['password'] is None:
# First of all, check if a password is available in the [passwords] section
clear_password = self.password.get_password(server['name'])
if (clear_password is None or self.get_servers_list()
[self.screen.active_server]['status'] == 'PROTECTED'):
# Else, the password should be enter by the user
# Display a popup to enter password
clear_password = self.screen.display_popup(
'Password needed for {}: '.format(server['name']), is_input=True)
# Store the password for the selected server
if clear_password is not None:
self.set_in_selected('password', self.password.sha256_hash(clear_password))
# Display the Glance client on the selected server
logger.info("Connect Glances client to the {} server".format(server['key']))
# Init the client
args_server = self.args
# Overwrite connection setting
args_server.client = server['ip']
args_server.port = server['port']
args_server.username = server['username']
args_server.password = server['password']
client = GlancesClient(config=self.config, args=args_server, return_to_browser=True)
# Test if client and server are in the same major version
if not client.login():
self.screen.display_popup(
"Sorry, cannot connect to '{}'\n"
"See '{}' for more details".format(server['name'], LOG_FILENAME))
# Set the ONLINE status for the selected server
self.set_in_selected('status', 'OFFLINE')
else:
# Start the client loop
# Return connection type: 'glances' or 'snmp'
connection_type = client.serve_forever()
try:
logger.debug("Disconnect Glances client from the {} server".format(server['key']))
except IndexError:
# Server did not exist anymore
pass
else:
# Set the ONLINE status for the selected server
if connection_type == 'snmp':
self.set_in_selected('status', 'SNMP')
else:
self.set_in_selected('status', 'ONLINE')
# Return to the browser (no server selected)
self.screen.active_server = None