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|
#!/usr/bin/python
#
# Glances is a simple CLI monitoring tool based on libstatgrab
#
# Pre-requisites: python-statgrab 0.5 or >
#
# Copyright (C) Nicolargo 2011 <nicolas@nicolargo.com>
#
# 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/>.";
#
import os
import getopt
import sys
import signal
import time
import datetime
import curses
import statgrab
# Globals variables
#==================
# The glances version id
__version__ = "1.0"
# Class
#======
class glancesStats():
"""
This class store, update and give the libstatgrab stats
"""
def __init__(self):
"""
Init the libstatgrab and process to the first update
"""
# Init libstatgrab
if not statgrab.sg_init():
print "Error: Can not init the libstatgrab library.\n"
# Do the first update
self.__update__()
def __update__(self):
"""
Update the stats
"""
# Get informations from libstatgrab and others...
self.host = statgrab.sg_get_host_info()
self.system = statgrab.sg_get_host_info()
self.cpu = statgrab.sg_get_cpu_percents()
self.load = statgrab.sg_get_load_stats()
self.mem = statgrab.sg_get_mem_stats()
self.memswap = statgrab.sg_get_swap_stats()
self.network = statgrab.sg_get_network_io_stats_diff()
self.processcount = statgrab.sg_get_process_count()
self.process = statgrab.sg_get_process_stats()
# BUG: https://bugs.launchpad.net/ubuntu/+source/libstatgrab/+bug/886783
# TODO: self.fs = statgrab.sg_get_fs_stats()
self.now = datetime.datetime.now()
def end(self):
# Shutdown the libstatgrab
statgrab.sg_shutdown()
def update(self):
# Update the stats
self.__update__()
def getHost(self):
return self.host
def getSystem(self):
return self.system
def getCpu(self):
return self.cpu
def getLoad(self):
return self.load
def getMem(self):
return self.mem
def getMemSwap(self):
return self.memswap
def getNetwork(self):
return self.network
def getProcessCount(self):
return self.processcount
def getProcessList(self, sortedby = 'auto'):
"""
Return the sorted process list
"""
if sortedby == 'auto':
# If global Mem > 70% sort by process size
# Else sort by cpu comsoption
if ( ( (self.mem['used'] - self.mem['cache']) * 100 / self.mem['total']) > 70):
sortedby = 'proc_size'
else:
sortedby = 'cpu_percent'
return sorted(self.process, key=lambda process: process[sortedby], reverse=True)
def getNow(self):
return self.now
class glancesScreen():
"""
This class manage the screen (display and key pressed)
"""
# By default the process list is automaticaly sorted
# If global CPU > 75% => Sorted by process Cpu consomption
# If global used MEM > 75% => Sorted by process size
__process_sortedby = 'auto'
def __init__(self, refresh_time = 1):
# Global information to display
self.__version = __version__
# Init the curses screen
self.screen = curses.initscr()
if not self.screen:
print "Error: Can not init the curses library.\n"
curses.start_color()
curses.use_default_colors()
curses.noecho() ; curses.cbreak() ; curses.curs_set(0)
# Init windows positions
self.term_h = 24 ; self.term_w = 80
self.host_x = 0 ; self.host_y = 0
self.system_x = 0 ; self.system_y = 1
self.cpu_x = 0 ; self.cpu_y = 3
self.load_x = 20; self.load_y = 3
self.mem_x = 41; self.mem_y = 3
self.network_x = 0 ; self.network_y = 9
self.process_x = 30; self.process_y = 9
self.now_x = 0 ; self.now_y = 23
# Init colors
self.hascolors = False
if curses.has_colors():
self.hascolors = True
#Init FG color BG color
curses.init_pair(1, curses.COLOR_WHITE, curses.COLOR_BLACK)
curses.init_pair(2, curses.COLOR_WHITE, curses.COLOR_RED)
curses.init_pair(3, curses.COLOR_WHITE, curses.COLOR_GREEN)
curses.init_pair(4, curses.COLOR_WHITE, curses.COLOR_BLUE)
curses.init_pair(5, curses.COLOR_WHITE, curses.COLOR_MAGENTA)
curses.init_pair(6, curses.COLOR_WHITE, curses.COLOR_CYAN)
curses.init_pair(7, curses.COLOR_BLACK, curses.COLOR_YELLOW)
# Text colors/styles
self.title_color = curses.A_BOLD|curses.A_UNDERLINE
self.default_color = curses.color_pair(3)|curses.A_BOLD
self.if50pc_color = curses.color_pair(4)|curses.A_BOLD
self.if70pc_color = curses.color_pair(5)|curses.A_BOLD
self.if90pc_color = curses.color_pair(2)|curses.A_BOLD
# Init window
self.term_window = curses.newwin(self.term_h, self.term_w, 0, 0)
# Init refresh time
self.__refresh_time = refresh_time
# Catch key pressed with non blocking mode
self.term_window.keypad(1) ; self.term_window.nodelay(1) ; self.pressedkey = -1
def setProcessSortedBy(self, sorted):
self.__process_sortedautoflag = False
self.__process_sortedby = sorted
def getProcessSortedBy(self):
return self.__process_sortedby
def __getColor(self, current = 0, max = 100):
# If current > 50% of max then color = self.if50pc_color / A_DIM
# If current > 70% of max then color = self.if70pc_color / A_BOLD
# If current > 90% of max then color = self.if90pc_color / A_REVERSE
# By default: color = self.default_color / 0
variable = (current * 100) / max
if variable > 90:
if self.hascolors:
return self.if90pc_color
else:
return curses.A_REVERSE
elif variable > 70:
if self.hascolors:
return self.if70pc_color
else:
return curses.A_BOLD
elif variable > 50:
if self.hascolors:
return self.if50pc_color
else:
return curses.A_DIM
else:
if self.hascolors:
return self.default_color
else:
return 0
def __catchKey(self):
# Get key
self.pressedkey = self.term_window.getch();
# Actions...
if (self.pressedkey == 27) or (self.pressedkey == 113):
# 'ESC'|'q' > Exit
end()
elif (self.pressedkey == 97):
# 'a' > Sort process list automaticaly
self.setProcessSortedBy('auto')
elif (self.pressedkey == 99):
# 'c' > Sort process list by Cpu usage
self.setProcessSortedBy('cpu_percent')
elif (self.pressedkey == 109):
# 'm' > Sort process list by Mem usage
self.setProcessSortedBy('proc_size')
def end(self):
# Shutdown the curses window
curses.echo() ; curses.nocbreak() ; curses.curs_set(1)
curses.endwin()
def update(self):
# Refresh the screen
self.term_window.refresh()
# Sleep
curses.napms(self.__refresh_time*1000)
# Getkey
self.__catchKey()
def erase(self):
# Erase the content of the screen
self.term_window.erase()
def displayHost(self, host):
# Host information
host_msg = "Glances v"+self.__version+" running on "+host['hostname'] #+" "+str(pressed_key)
self.term_window.addnstr(self.host_y, self.host_x+40-len(host_msg)/2, host_msg, 80, self.title_color if self.hascolors else 0)
def displaySystem(self, system):
# System information
system_msg = system['os_name']+" "+system['platform']+" "+system['os_version']
self.term_window.addnstr(self.system_y, self.system_x+40-len(system_msg)/2, system_ms
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