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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
from os import fork, execl, dup2, wait
import sys
def pretty_print(element, level=0):
'''Produce a pretty-printed text representation of element'''
if element.text:
fmt = "%s<%%s %%s>%%s</%%s>" % (level*" ")
data = (element.tag, (" ".join(["%s='%s'" % keyval for keyval in element.attrib.iteritems()])),
element.text, element.tag)
if element._children:
fmt = "%s<%%s %%s>\n" % (level*" ",) + (len(element._children) * "%s") + "%s</%%s>\n" % (level*" ")
data = (element.tag, ) + (" ".join(["%s='%s'" % keyval for keyval in element.attrib.iteritems()]),)
data += tuple([pretty_print(entry, level+2) for entry in element._children]) + (element.tag, )
else:
fmt = "%s<%%s %%s/>\n" % (level * " ")
data = (element.tag, " ".join(["%s='%s'" % keyval for keyval in element.attrib.iteritems()]))
return fmt % data
if __name__ == '__main__':
c = ConfigParser()
c.read(['/etc/bcfg2.conf'])
configpath = "%s/etc/report-configuration.xml" % c.get('server', 'repository')
hostinfopath = "%s/etc/hostinfo.xml" % c.get('server', 'repository')
metadatapath = "%s/etc/metadata.xml" % c.get('server', 'repository')
sendmailpath = c.get('statistics','sendmailpath')
metaElement = parse(metadatapath)
hostlist = [client.get('name') for client in metaElement.findall("Client")]
HostInfo = Element("HostInformation")
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()
chost = pids[cpid]
del pids[cpid]
if status == 0:
SubElement(HostInfo, "HostInfo", name=chost, fqdn=chost, pingable='Y')
else:
if chost.count('.') > 0:
fullnames[chost.split('.')[0]] = chost
hostlist.append(chost.split('.')[0])
else:
SubElement(HostInfo, "HostInfo", name=fullnames[chost], fqdn=fullnames[chost], pingable='N')
except:
pass
fout = open(hostinfopath, 'w')
fout.write(pretty_print(HostInfo))
fout.close()
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