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#!/usr/bin/env python
# Jul 17 2005
#GenerateHostInfo - Joey Hagedorn - hagedorn@mcs.anl.gov
'''Generates hostinfo.xml at a regular interval'''
__revision__ = '$Revision$'
from ConfigParser import ConfigParser
from lxml.etree import Element, SubElement, parse, dump, tostring
from os import fork, execl, dup2, wait
import sys
if __name__ == '__main__':
c = ConfigParser()
c.read(['/etc/bcfg2.conf'])
configpath = "%s/etc/report-configuration.xml" % c.get('server', 'repository')
clientdatapath = "%s/Metadata/clients.xml" % c.get('server', 'repository')
sendmailpath = c.get('statistics','sendmailpath')
clientElement = parse(clientdatapath)
hostlist = [client.get('name') for client in clientElement.findall("Client")]
pids = {}
fullnames = {}
null = open('/dev/null', 'w+')
while hostlist or pids:
if hostlist and len(pids.keys()) < 15:
host = hostlist.pop()
pid = fork()
if pid == 0:
# in child
dup2(null.fileno(), sys.__stdin__.fileno())
dup2(null.fileno(), sys.__stdout__.fileno())
dup2(null.fileno(), sys.__stderr__.fileno())
execl('/bin/ping', 'ping', '-w', '5', '-c', '1', host)
else:
pids[pid] = host
else:
try:
(cpid, status) = wait()
except OSError:
continue
chost = pids[cpid]
del pids[cpid]
if status == 0:
#if '-v' in sys.argv:
print "Alive: %s (fullname: %s):"%(chost,fullnames[chost])
#SubElement(HostInfo, "HostInfo", name=chost, fqdn=chost, pingable='Y')
clientElement.xpath("//Client[@name='%s']"%(fullnames[chost]))[0].set("pingable",'Y')
#also set pingtime, if you can get it
else:
if chost.count('.') > 0:
fullnames[chost.split('.')[0]] = chost
hostlist.append(chost.split('.')[0])
else:
print "Dead: %s (fullname: %s):"%(chost,fullnames[chost])
#SubElement(HostInfo, "HostInfo", name=fullnames[chost], fqdn=fullnames[chost], pingable='N')
clientElement.xpath("//Client[@name='%s']"%(fullnames[chost]))[0].set("pingable",'N')
#also set pingtime if you can get it
dump(clientElement.getroot())
fout = open(clientdatapath, 'w')
fout.write(tostring(clientElement.getroot()))
fout.close()
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