/usr/lib/python3/dist-packages/glances/outputs/glances_history.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.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 | # -*- coding: utf-8 -*-
#
# 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/>.
"""History class."""
# Import system lib
import os
import tempfile
# Import Glances lib
from glances.core.glances_globals import logger
# Import specific lib
try:
from matplotlib import __version__ as matplotlib_version
import matplotlib.pyplot as plt
import matplotlib.dates as dates
except:
matplotlib_check = False
logger.warning('Can not load Matplotlib library. Please install it using "pip install matplotlib"')
else:
matplotlib_check = True
logger.info('Load Matplotlib version %s' % matplotlib_version)
class GlancesHistory(object):
"""This class define the object to manage stats history"""
def __init__(self, output_folder=tempfile.gettempdir()):
# !!! MINUS: matplotlib footprint (mem/cpu) => Fork process ?
# !!! MINUS: Mem used to store history
# !!! TODO: sampling before graph => Usefull ?
# !!! TODO: do not display first two point (glances is running)
# !!! TODO: replace /tmp by a cross platform way to get /tmp folder
self.output_folder = output_folder
def get_output_folder(self):
"""Return the output folder where the graph are generated"""
return self.output_folder
def graph_enabled(self):
"""Return True if Glances can generaate history graphs"""
return matplotlib_check
def reset(self, stats):
"""
Reset all the history
"""
if not self.graph_enabled():
return False
for p in stats.getAllPlugins():
h = stats.get_plugin(p).get_stats_history()
if h is not None:
stats.get_plugin(p).reset_stats_history()
return True
def generate_graph(self, stats):
"""
Generate graphs from plugins history
"""
if not self.graph_enabled():
return False
for p in stats.getAllPlugins():
h = stats.get_plugin(p).get_stats_history()
if h is not None:
# Build the graph
# fig = plt.figure(dpi=72)
ax = plt.subplot(1, 1, 1)
# Label
plt.title("%s stats" % p)
handles = []
for i in stats.get_plugin(p).get_items_history_list():
handles.append(plt.Rectangle((0, 0), 1, 1, fc=i['color'], ec=i['color'], linewidth=1))
labels = [i['name'] for i in stats.get_plugin(p).get_items_history_list()]
plt.legend(handles, labels, loc=1, prop={'size':9})
formatter = dates.DateFormatter('%H:%M:%S')
ax.xaxis.set_major_formatter(formatter)
# ax.set_ylabel('%')
# Draw the stats
for i in stats.get_plugin(p).get_items_history_list():
ax.plot_date(h['date'], h[i['name']],
i['color'],
label='%s' % i['name'],
xdate=True, ydate=False)
# Save and display
plt.savefig(os.path.join(self.output_folder, 'glances_%s.png' % p), dpi=72)
# plt.show()
return True
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