62 lines
2 KiB
Python
62 lines
2 KiB
Python
import os
|
|
import subprocess
|
|
|
|
from lib.RRD import DS, RRA, RRD
|
|
|
|
|
|
class NodeRRD(RRD):
|
|
ds_list = [
|
|
DS('upstate', 'GAUGE', 120, 0, 1),
|
|
DS('clients', 'GAUGE', 120, 0, float('NaN')),
|
|
]
|
|
rra_list = [
|
|
# 2 hours of 1 minute samples
|
|
RRA('AVERAGE', 0.5, 1, 120),
|
|
# 5 days of 5 minute samples
|
|
RRA('AVERAGE', 0.5, 5, 1440),
|
|
# 30 days of 1 hour samples
|
|
RRA('AVERAGE', 0.5, 60, 720),
|
|
# 1 year of 12 hour samples
|
|
RRA('AVERAGE', 0.5, 720, 730),
|
|
]
|
|
|
|
def __init__(self, filename, node=None):
|
|
"""
|
|
Create a new RRD for a given node.
|
|
|
|
If the RRD isn't supposed to be updated, the node can be omitted.
|
|
"""
|
|
self.node = node
|
|
super().__init__(filename)
|
|
self.ensure_sanity(self.ds_list, self.rra_list, step=60)
|
|
|
|
@property
|
|
def imagename(self):
|
|
return "{basename}.png".format(
|
|
basename=os.path.basename(self.filename).rsplit('.', 2)[0])
|
|
|
|
# TODO: fix this, python does not support function overloading
|
|
def update(self):
|
|
super().update({'upstate': int(self.node['flags']['online']),
|
|
'clients': self.node['statistics']['clients']})
|
|
|
|
def graph(self, directory, timeframe):
|
|
"""
|
|
Create a graph in the given directory. The file will be named
|
|
basename.png if the RRD file is named basename.rrd
|
|
"""
|
|
args = ['rrdtool', 'graph', os.path.join(directory, self.imagename),
|
|
'-s', '-' + timeframe,
|
|
'-w', '800',
|
|
'-h', '400',
|
|
'-l', '0',
|
|
'-y', '1:1',
|
|
'DEF:clients=' + self.filename + ':clients:AVERAGE',
|
|
'VDEF:maxc=clients,MAXIMUM',
|
|
'CDEF:c=0,clients,ADDNAN',
|
|
'CDEF:d=clients,UN,maxc,UN,1,maxc,IF,*',
|
|
'AREA:c#0F0:up\\l',
|
|
'AREA:d#F00:down\\l',
|
|
'LINE1:c#00F:clients connected\\l']
|
|
subprocess.check_output(args)
|