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#!/usr/bin/python2
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import argparse
import glob
import logging
import os
import re
import sys
import rrdtool
LOG = logging.getLogger('root')
COLORS = (
'#0000ff',
'#00ff00',
'#ff0000',
'#00ffff',
'#ffff00',
'#ff00ff'
)
def colorgen():
for color in COLORS:
yield color
def get_uptime_seconds():
with open('/proc/uptime') as f:
return f.read().split(' ')[0]
class LoadGraph(object):
DEF = 'DEF:%(vname)s=%(filename)s:%(ds)s:%(CF)s'
LINE = 'LINE1:%(vname)s%(color)s:%(vname)s'
AREA = 'AREA:%(vname)s%(color)s:%(vname)s'
def __init__(self, conf, file, color):
self.conf = conf
self.color = colorgen()
self.file = file
self.info = RRDInfo(file)
self.color = color
self.filename = os.path.basename(self.file)
def _gen_line(self, vname, ds, color):
params = dict(vname=vname,
ds=ds,
filename=self.file,
color=color,
CF=self.conf.cf)
ret = []
ret.append(self.DEF % params)
draw = self.LINE
if self.conf.area:
draw = self.AREA
if self.conf.stack:
draw += ':STACK'
ret.append(draw % params)
LOG.info('Get params for ds: %s', ret)
return ret
def gen_params(self):
ret = []
for DS in self.info.data_sources():
filename, ext = os.path.splitext(self.filename)
vname = '%s-%s' % (filename, DS)
ret.extend(self._gen_line(vname, DS, next(self.color)))
return ret
def graph(self):
params = self.common_params()
params += self.get_period()
params.extend(self.gen_params())
return rrdtool.graphv(*params)
class RRDInfo(object):
def __init__(self, file):
self.info = rrdtool.info(file)
@property
def last_update(self):
return self.info['last_update']
def data_sources(self):
dss = set()
for key in self.info:
ds = re.findall('ds\[(\w*)', key)
if ds:
dss.add(ds[0])
return dss
def main():
logging.basicConfig(level=logging.DEBUG)
parser = argparse.ArgumentParser()
parser.add_argument('--file', nargs='+')
parser.add_argument('--type')
parser.add_argument('--height', default='256')
parser.add_argument('--width', default='1024')
parser.add_argument('--output', default='a.png')
parser.add_argument('--stack', action='store_true')
parser.add_argument('--area', action='store_true')
parser.add_argument('--cf', default='MAX')
parser.add_argument('--start', default=None)
parser.add_argument('--end', default=None)
conf = parser.parse_args(sys.argv[1:])
last_update = None
rrd_definitions = []
color = colorgen()
rrd_files = []
for f in conf.file:
f = os.path.expanduser(f)
rrd_files.extend(glob.glob(f))
LOG.info('Get rrdfiles: %s', rrd_files)
for file in rrd_files:
rrd_definitions.extend(LoadGraph(conf, file, color=color).gen_params())
if not last_update:
last_update = RRDInfo(file).last_update
else:
last_update = min(RRDInfo(file).last_update, last_update)
start = conf.start
end = conf.end
if not start:
start = 'end-' + get_uptime_seconds()
if not end:
end = str(last_update + 60)
params = [
conf.output,
'--zoom', '4',
'--width', conf.width,
'--height', conf.height,
'--start', start,
'--end', end
]
params.extend(rrd_definitions)
LOG.debug('params: %s', params)
rrdtool.graph(*params)
if __name__ == "__main__":
main()
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