150 lines
5.2 KiB
Python
Executable File
150 lines
5.2 KiB
Python
Executable File
#!/usr/bin/env python3
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import subprocess
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import time
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import os
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class rrd:
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def __init__( self
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, databaseDirectory
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, imagePath
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, displayTimeGlobal = "7d"
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, displayTimeNode = "1d"
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):
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self.dbPath = databaseDirectory
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self.globalDbFile = databaseDirectory + "/nodes.rrd"
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self.imagePath = imagePath
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self.displayTimeGlobal = displayTimeGlobal
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self.displayTimeNode = displayTimeNode
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self.currentTimeInt = (int(time.time())/60)*60
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self.currentTime = str(self.currentTimeInt)
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try:
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os.stat(self.imagePath)
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except:
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os.mkdir(self.imagePath)
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def checkAndCreateIfNeededGlobalDatabase(self):
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""" Creates the global database file iff it did not exist.
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"""
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if not os.path.exists(self.globalDbFile):
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# Create Database with rrdtool
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args = ["rrdtool",'create', self.globalDbFile
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,'--start', str(round(self.currentTimeInt - 60))
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,'--step' , '60'
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# Number of nodes available
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,'DS:nodes:GAUGE:120:0:U'
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,'RRA:LAST:0:1:44640'
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,'RRA:LAST:0:60:744'
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,'RRA:LAST:0:1440:1780'
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# Number of client available
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,'DS:clients:GAUGE:120:0:U'
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,'RRA:LAST:0:1:44640'
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,'RRA:LAST:0:60:744'
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,'RRA:LAST:0:1440:1780'
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]
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subprocess.call(args)
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def updateGlobalDatabase(self,nodeCount,clientCount):
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""" Adds a new (#Nodes,#Clients) entry to the global database.
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"""
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# Update Global RRDatabase
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args = ["rrdtool",'updatev', self.globalDbFile
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# #Nodes #Clients
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, self.currentTime + ":"+str(nodeCount)+":"+str(clientCount)
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]
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subprocess.check_output(args)
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def createGlobalGraph(self):
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nodeGraph = self.imagePath + "/" + "globalGraph.png"
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args = ["rrdtool", 'graph', nodeGraph, '-s', '-' + self.displayTimeGlobal, '-w', '800', '-h' '400'
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,'DEF:nodes=' + self.globalDbFile + ':nodes:LAST', 'LINE1:nodes#F00:nodes\\l'
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,'DEF:clients=' + self.globalDbFile + ':clients:LAST','LINE2:clients#00F:clients'
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]
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subprocess.check_output(args)
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def nodeMACToRRDFile(self,nodeMAC):
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return self.dbPath + "/" + str(nodeMAC).replace(":","") + ".rrd"
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def nodeMACToPNGFile(self,nodeMAC):
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return self.imagePath + "/" + str(nodeMAC).replace(":","") + ".png"
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def checkAndCreateIfNeededNodeDatabase(self,nodePrimaryMAC):
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# TODO check for bad nodeNames
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nodeFile = self.nodeMACToRRDFile(nodePrimaryMAC);
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if not os.path.exists(nodeFile):
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# TODO Skalen anpassen
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args = ["rrdtool",'create',nodeFile
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,'--start',str(round(self.currentTimeInt - 60))
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,'--step' , '60'
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,'DS:upstate:GAUGE:120:0:1'
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,'RRA:LAST:0:1:44640'
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# Number of client available
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,'DS:clients:GAUGE:120:0:U'
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,'RRA:LAST:0:1:44640'
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]
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subprocess.check_output(args)
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# Call only if node is up
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def updateNodeDatabase(self,nodePrimaryMAC,clientCount):
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nodeFile = self.nodeMACToRRDFile(nodePrimaryMAC)
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# Update Global RRDatabase
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args = ["rrdtool",'updatev', nodeFile
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# #Upstate #Clients
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, self.currentTime + ":"+str(1)+":"+str(clientCount)
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]
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subprocess.check_output(args)
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def createNodeGraph(self,nodePrimaryMAC,displayTimeNode):
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nodeGraph = self.nodeMACToPNGFile(nodePrimaryMAC)
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nodeFile = self.nodeMACToRRDFile(nodePrimaryMAC)
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args = ['rrdtool','graph', nodeGraph, '-s', '-' + self.displayTimeNode , '-w', '800', '-h', '400', '-l', '0', '-y', '1:1',
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'DEF:clients=' + nodeFile + ':clients:LAST',
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'VDEF:maxc=clients,MAXIMUM',
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'CDEF:c=0,clients,ADDNAN',
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'CDEF:d=clients,UN,maxc,UN,1,maxc,IF,*',
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'AREA:c#0F0:up\\l',
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'AREA:d#F00:down\\l',
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'LINE1:c#00F:clients connected\\l',
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]
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subprocess.check_output(args)
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def update_database(self,db):
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nodes = {}
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clientCount = 0
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for node in db.get_nodes():
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if node.flags['online']:
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if not node.flags['client']:
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nodes[node.id] = node
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node.clients = 0;
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clientCount -= 1 # XXX: might not be needed with gluon/alfred
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else:
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clientCount += 1
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for link in db.get_links():
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source = link.source.interface
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target = link.target.interface
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if source in nodes and not target in nodes:
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nodes[source].clients += 1
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elif target in nodes and not source in nodes:
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nodes[target].clients += 1
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self.checkAndCreateIfNeededGlobalDatabase()
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self.updateGlobalDatabase(len(nodes),clientCount)
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for mac in nodes:
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self.checkAndCreateIfNeededNodeDatabase(mac)
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self.updateNodeDatabase(mac,nodes[mac].clients)
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def update_images(self):
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""" Creates a image for every rrd file in the database directory.
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"""
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self.createGlobalGraph()
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nodeDbFiles = os.listdir(self.dbPath)
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for fileName in nodeDbFiles:
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nodeName = os.path.basename(fileName).split('.')
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if nodeName[1] == 'rrd' and not nodeName[0] == "nodes":
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self.createNodeGraph(nodeName[0],self.displayTimeNode)
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