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#!/usr/bin/env python
"""bcfg2-build-reports Generates & distributes reports of statistic information
for bcfg2"""
__revision__ = '$Revision$'
from ConfigParser import ConfigParser, NoSectionError, NoOptionError
from lxml.etree import XML, XSLT, parse, Element, ElementTree, SubElement, tostring, XMLSyntaxError
from time import asctime, strptime
import copy, getopt, re, os, socket, sys
def generatereport(rspec, nrpt):
"""
generatereport creates and returns an ElementTree representation
of a report adhering to the XML spec for intermediate reports.
"""
reportspec = copy.deepcopy(rspec)
nodereprt = copy.deepcopy(nrpt)
reportgood = reportspec.get("good", default = 'Y')
reportmodified = reportspec.get("modified", default = 'Y')
current_date = asctime()[:10]
"""Build regex of all the nodes we are reporting about."""
pattern = re.compile( '|'.join([item.get("name") for item in reportspec.findall('Machine')]))
for node in nodereprt.findall('Node'):
if not (node.findall("Statistics") and pattern.match(node.get('name'))):
# don't know enough about node
nodereprt.remove(node)
continue
#reduce to most recent Statistics entry
statisticslist = node.findall('Statistics')
#this line actually sorts from most recent to oldest
statisticslist.sort(lambda y, x: cmp(strptime(x.get("time")), strptime(y.get("time"))))
stats = statisticslist[0]
[node.remove(item) for item in node.findall('Statistics')]
#add a good tag if node is good and we wnat to report such
if reportgood == 'Y' and stats.get('state') == 'clean':
SubElement(stats,"Good")
[stats.remove(item) for item in stats.findall("Bad") + stats.findall("Modified") if \
item.getchildren() == []]
[stats.remove(item) for item in stats.findall("Modified") if reportmodified == 'N']
#test for staleness -if stale add Stale tag
if stats.get("time").find(current_date) == -1:
SubElement(stats,"Stale")
node.append(stats)
return nodereprt
def mail(mailbody, confi):
"""mail mails a previously generated report."""
try:
mailer = confi.get('statistics', 'sendmailpath')
except (NoSectionError, NoOptionError):
mailer = "/usr/sbin/sendmail"
# open a pipe to the mail program and
# write the data to the pipe
pipe = os.popen("%s -t" % mailer, 'w')
pipe.write(mailbody)
exitcode = pipe.close()
if exitcode:
print "Exit code: %s" % exitcode
def rss(reportxml, delivery, report):
"""rss appends a new report to the specified rss file
keeping the last 9 articles.
"""
#check and see if rss file exists
for destination in delivery.findall('Destination'):
try:
fil = open(destination.attrib['address'], 'r')
olddoc = XML(fil.read())
#defines the number of recent articles to keep
items = olddoc.find("channel").findall("item")[0:9]
fil.close()
fil = open(destination.attrib['address'], 'w')
except (IOError, XMLSyntaxError):
fil = open(destination.attrib['address'], 'w')
items = []
rssdata = Element("rss")
channel = SubElement(rssdata, "channel")
rssdata.set("version", "2.0")
chantitle = SubElement(channel, "title")
chantitle.text = report.attrib['name']
chanlink = SubElement(channel, "link")
#this can later link to WWW report if one gets published simultaneously?
chanlink.text = "http://www.mcs.anl.gov/cobalt/bcfg2"
chandesc = SubElement(channel, "description")
chandesc.text = "Information regarding the 10 most recent bcfg2 runs."
channel.append(XML(reportxml))
if items != []:
for item in items:
channel.append(item)
tree = tostring(rssdata, encoding='UTF-8', xml_declaration=True)
fil.write(tree)
fil.close()
def www(reportxml, delivery):
"""www outputs report to"""
#this can later link to WWW report if one gets published simultaneously?
for destination in delivery.findall('Destination'):
fil = open(destination.attrib['address'], 'w')
fil.write(reportxml)
fil.close()
def fileout(reportxml, delivery):
"""outputs to plain text file"""
for destination in delivery.findall('Destination'):
fil = open(destination.attrib['address'], 'w')
fil.write(reportxml)
fil.close()
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__':
ping=True
all=False
if '-C' in sys.argv:
cfpath = sys.argv[sys.argv.index('-C') + 1]
else:
cfpath = '/etc/bcfg2.conf'
c = ConfigParser()
c.read([cfpath])
configpath = "%s/etc/report-configuration.xml" % c.get('server', 'repository')
statpath = "%s/etc/statistics.xml" % c.get('server', 'repository')
clientsdatapath = "%s/Metadata/clients.xml" % c.get('server', 'repository')
try:
prefix = c.get('server', 'prefix')
except (NoSectionError, NoOptionError):
prefix = '/usr'
transformpath = "/%s/share/bcfg2/xsl-transforms/" % (prefix)
#websrcspath = "/usr/share/bcfg2/web-rprt-srcs/"
try:
opts, args = getopt.getopt(sys.argv[1:], "C:hAc:Ns:", ["help", "all", "config=","no-ping", "stats="])
except getopt.GetoptError, mesg:
# print help information and exit:
print "%s\nUsage:\nbcfg2-build-reports [-h][-A (include ALL clients)] [-c <configuration-file>] [-s <statistics-file>][-N (do not ping clients)]" % (mesg)
raise SystemExit, 2
for o, a in opts:
if o in ("-h", "--help"):
print "Usage:\nbcfg2-build-reports [-h] [-c <configuration-file>] [-s <statistics-file>]"
raise SystemExit
if o in ("-A", "--all"):
all=True
if o in ("-c", "--config"):
configpath = a
if o in ("-N", "--no-ping"):
ping = False
if o in ("-s", "--stats"):
statpath = a
#See if hostinfo.xml exists, and is less than 23.5 hours old
#try:
#hostinstat = os.stat(hostinfopath)
#if (time() - hostinstat[9])/(60*60) > 23.5:
if ping:
os.system('bcfg2-ping-sweep -C %s' % cfpath) # bcfg2-ping-sweep needs to be in path
#except OSError:
# os.system('GenerateHostInfo')#Generate HostInfo needs to be in path
"""Reads Data & Config files"""
try:
statsdata = XML(open(statpath).read())
except (IOError, XMLSyntaxError):
print("bcfg2-build-reports: Failed to parse %s"%(statpath))
raise SystemExit, 1
try:
configdata = XML(open(configpath).read())
except (IOError, XMLSyntaxError):
print("bcfg2-build-reports: Failed to parse %s"%(configpath))
raise SystemExit, 1
try:
clientsdata = XML(open(clientsdatapath).read())
except (IOError, XMLSyntaxError):
print("bcfg2-build-reports: Failed to parse %s"%(clientsdatapath))
raise SystemExit, 1
#Merge data from three sources
nodereport = Element("Report", attrib={"time" : asctime()})
#should all of the other info in Metadata be appended?
#What about all of the package stuff for other types of reports?
for client in clientsdata.findall("Client"):
nodel = Element("Node", attrib={"name" : client.get("name")})
nodel.append(client)
for nod in statsdata.findall("Node"):
if client.get('name').find(nod.get('name')) == 0:
for statel in nod.findall("Statistics"):
nodel.append(statel)
nodereport.append(nodel)
if all:
for nod in statsdata.findall("Node"):
for client in clientsdata.findall("Client"):
if client.get('name').find(nod.get('name')) == 0:
break
else:
nodel = Element("Node", attrib={"name" : nod.get("name")})
client = Element("Client", attrib={"name" : nod.get("name"), "profile" : "default"})
nodel.append(client)
for statel in nod.findall("Statistics"):
nodel.append(statel)
nodereport.append(nodel)
for reprt in configdata.findall('Report'):
nodereport.set("name", reprt.get("name", default="BCFG Report"))
if reprt.get('refresh-time') != None:
nodereport.set("refresh-time", reprt.get("refresh-time", default="600"))
procnodereport = generatereport(reprt, nodereport)
for deliv in reprt.findall('Delivery'):
#is a deepcopy of procnodereport necessary?
delivtype = deliv.get('type', default='nodes-digest')
deliverymechanism = deliv.get('mechanism', default='www')
#apply XSLT, different ones based on report type, and options
if deliverymechanism == 'null-operator': #Special Cases
fileout(tostring(ElementTree(procnodereport).getroot(), encoding='UTF-8', xml_declaration=True), deliv)
break
transform = delivtype + '-' + deliverymechanism + '.xsl'
try: #make sure valid stylesheet is selected
os.stat(transformpath + transform)
except:
print("bcfg2-build-reports: Invalid report type or delivery mechanism.\n Can't find: "\
+ transformpath + transform)
raise SystemExit, 1
try: #try to parse stylesheet
stylesheet = XSLT(parse(transformpath + transform))
except:
print("bcfg2-build-reports: invalid XSLT transform file.")
raise SystemExit, 1
if deliverymechanism == 'mail':
if delivtype == 'nodes-individual':
reportdata = copy.deepcopy(procnodereport)
for noden in reportdata.findall("Node"):
[reportdata.remove(y) for y in reportdata.findall("Node")]
reportdata.append(noden)
result = stylesheet.apply(ElementTree(reportdata))
outputstring = stylesheet.tostring(result)
if not outputstring == None:
toastring = ''
for desti in deliv.findall("Destination"):
toastring = "%s%s " % \
(toastring, desti.get('address'))
#prepend To: and From:
outputstring = "To: %s\nFrom: root@%s\n%s"% \
(toastring, socket.getfqdn(), outputstring)
mail(outputstring, c) #call function to send
else:
reportdata = copy.deepcopy(procnodereport)
result = stylesheet.apply(ElementTree(reportdata))
outputstring = stylesheet.tostring(result)
if not outputstring == None:
toastring = ''
for desti in deliv.findall("Destination"):
toastring = "%s%s " % \
(toastring, desti.get('address'))
#prepend To: and From:
outputstring = "To: %s\nFrom: root@%s\n%s"% \
(toastring, socket.getfqdn(), outputstring)
mail(outputstring, c) #call function to send
else:
outputstring = tostring(stylesheet.apply(ElementTree(procnodereport)).getroot(), encoding='UTF-8', xml_declaration=True)
if deliverymechanism == 'rss':
rss(outputstring, deliv, reprt)
else: # must be deliverymechanism == 'www':
www(outputstring, deliv)
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