Tuesday, 15 June 2010

transmission + munin

OK, so things like the Rocks Avalanche Installer (pdf) show how useful bittorrent can be for providing a scalable install service. How do you know the status of bittorrent installs though? transmission-remote -l is all well and good if you're on the console but what about long term graphing? Cue Munin and a quick bit of python:

# Munin plugin for monitorring transmission bittorrent status
# Andrew Elwell
# $Id: $
import sys, os

if len(sys.argv) == 2 and sys.argv[1] == "autoconf":
print "yes"
elif len(sys.argv) == 2 and sys.argv[1] == "config":
print 'graph_args --base 1000'
print 'graph_title Transmission torrent status'
print 'graph_vlabel Count'
print 'graph_category Transmission'

print 'Stopped.label Stopped'
print 'Stopped.draw AREA'
print 'Idle.label Idle'
print 'Idle.draw STACK'
print 'Seeding.label Seeding'
print 'Seeding.draw STACK'
print 'Up.label Up and Down'
print 'Up.draw STACK'
print 'Downloading.label Downloading'
print 'Downloading.draw STACK'
print 'Will.label Will Verify'
print 'Will.draw STACK'
print 'Verifying.label Verifying'
print 'Verifying.draw STACK'

# OK we cheat - initialise ALL values to 0, then overwrite with 'real' ones, then spit out the whole dictionary.
data = {'Stopped': 0, 'Seeding': 0, 'Idle': 0, 'Up': 0, 'Downloading':0, 'Will':0,'Verifying':0 }
for state in os.popen("transmission-remote -l |sed 's/^\s\+//g' | sed 's/\s\{2,\}/~/g' | cut -d '~' -f8 | sort | uniq -c | grep -v '1 $' | grep -v '1 Status' | awk '{print $2, $1}'"):
(s,c) = state.split()
data[s] = c
for k,v in data.iteritems():
print k + '.value' ,v

EDIT: Suppose I should really find a nice template that copes with embedding code, but in the meantime thats what 'view source' is for...

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