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#!/usr/bin/env python
# Jul 17 2005
#GenerateHostInfo - Joey Hagedorn - hagedorn@mcs.anl.gov
__revision__ = '$Revision$'
'''Generates hostinfo.xml at a regular interval'''
from ConfigParser import ConfigParser
from elementtree.ElementTree import *
from xml.parsers.expat import ExpatError
from os import system
from socket import gethostbyname, gethostbyaddr, gaierror
def buildfqdncache(domain_list, host_list):
'''build dictionary of hostname to fqdns'''
fqdncache = {}
for nodename in host_list:
fqdncache[nodename] = ""
for domain in domain_list:
try:
fqdn = "%s.%s" % (nodename, domain)
ipaddr = gethostbyname(fqdn)
fqdncache[nodename] = fqdn
break
except gaierror:
continue
return fqdncache
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'])
hostinfopath = "%s/hostinfo.xml" % c.get('server', 'metadata')
metadatapath = "%s/metadata.xml" % c.get('server', 'metadata')
configpath = "%s/report-configuration.xml" % c.get('server', 'metadata')
domainlist = c.get('statistics', 'domainlist').replace("\'","").split(",")
sendmailpath = c.get('statistics','sendmailpath')
metaElement = parse(metadatapath)
hostlist = map(lambda x:x.get("name"), metaElement.findall("Client"))
fqdn_cache = buildfqdncache(domainlist, hostlist)
HostInfo = Element("HostInformation")
for host in hostlist:
record = SubElement(HostInfo, "HostInfo",
attrib={"name" : host,"fqdn" : fqdn_cache[host]})
if system( 'ping -c 1 ' + fqdn_cache[host] + ' &>/dev/null') != 0:
record.set("pingable", 'N')
else:
record.set("pingable", 'Y')
fout = open(hostinfopath, 'w')
fout.write(pretty_print(HostInfo))
fout.close()
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