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'''Frame is the Client Framework that verifies and installs entries, and generates statistics'''
__revision__ = '$Revision$'
import logging, time
import Bcfg2.Client.Tools
def cmpent(ent1, ent2):
'''Sort entries'''
if ent1.tag != ent2.tag:
return cmp(ent1.tag, ent2.tag)
else:
return cmp(ent1.get('name'), ent2.get('name'))
def promptFilter(prompt, entries):
'''Filter a supplied list based on user input'''
ret = []
entries.sort(cmpent)
for entry in entries[:]:
if 'qtext' in entry.attrib:
iprompt = entry.get('qtext')
else:
iprompt = prompt % (entry.tag, entry.get('name'))
try:
if raw_input(iprompt) in ['y', 'Y']:
ret.append(entry)
except:
continue
return ret
toolset_defs = {'rh': {'Service':'chkconfig', 'Package':'rpm'},
'debian': {'Service':'deb', 'Package':'deb'},
'nexenta': {'Service':'smf', 'Package':'deb'},
'solaris': {'Service':'smf', 'Package':'sysv'},
'gentoo': {'Service':'rc-update', 'Package':'ebuild'}}
class Frame:
'''Frame is the container for all Tool objects and state information'''
def __init__(self, config, setup, times):
self.config = config
self.times = times
self.times['initialization'] = time.time()
self.setup = setup
self.tools = []
self.states = {}
self.whitelist = []
self.removal = []
self.logger = logging.getLogger("Bcfg2.Client.Frame")
if self.setup['drivers']:
tools = self.setup['drivers'].split(',')
else:
tools = Bcfg2.Client.Tools.__all__[:]
tmods = {}
for tool in tools:
tool_class = "Bcfg2.Client.Tools.%s" % tool
try:
tmods[tool] = __import__(tool_class, globals(), locals(), ['*'])
except ImportError:
continue
for tool in tools:
for conflict in getattr(tool, 'conflicts', []):
del tmods[conflict]
for (tool, mod) in tmods.iteritems():
try:
self.tools.append(getattr(mod, tool)(self.logger, setup, config, self.states))
except Bcfg2.Client.Tools.toolInstantiationError:
continue
except:
self.logger.error("Failed to instantiate tool %s" % (tool), exc_info=1)
self.logger.info("Loaded tool drivers:")
self.logger.info([tool.__name__ for tool in self.tools])
if not self.setup['dryrun']:
for cfile in [cfl for cfl in config.findall(".//ConfigFile") \
if cfl.get('name') in self.__important__]:
tool = [t for t in self.tools if t.handlesEntry(cfile)][0]
self.states[cfile] = tool.VerifyConfigFile(cfile, [])
if not self.states[cfile]:
tool.InstallConfigFile(cfile)
# find entries not handled by any tools
problems = [entry for struct in config for entry in struct if entry not in self.handled]
if toolset_defs.has_key(config.get('toolset')):
tdefs = toolset_defs[config.get('toolset')]
for problem in problems[:]:
if tdefs.has_key(problem.tag):
problem.set('type', tdefs[problem.tag])
problems.remove(problem)
if problems:
self.logger.error("The following entries are not handled by any tool:")
self.logger.error(["%s:%s:%s" % (entry.tag, entry.get('type'), \
entry.get('name')) for entry in problems])
self.logger.error("")
entries = [(entry.tag, entry.get('name')) for struct in config for entry in struct]
multi = []
for entry in entries[:]:
if entries.count(entry) > 1:
multi.append(entry)
entries.remove(entry)
if multi:
self.logger.info("The following entries are included multiple times:")
self.logger.info(multi)
def __getattr__(self, name):
if name in ['extra', 'handled', 'modified', '__important__']:
ret = []
for tool in self.tools:
ret += getattr(tool, name)
return ret
elif self.__dict__.has_key(name):
return self.__dict__[name]
raise AttributeError, name
def Inventory(self):
'''Verify all entries, find extra entries, and build up workqueues'''
# initialize all states
for struct in self.config.getchildren():
for entry in struct.getchildren():
self.states[entry] = False
for tool in self.tools:
try:
tool.Inventory()
except:
self.logger.error("%s.Inventory() call failed:" % tool.__name__, exc_info=1)
def Decide(self):
'''Set self.whitelist based on user interaction'''
prompt = "Would you like to install %s: %s? (y/N): "
rprompt = "Would you like to remove %s: %s? (y/N): "
if self.setup['remove']:
if self.setup['remove'] == 'all':
self.removal = self.extra
elif self.setup['remove'] == 'services':
self.removal = [entry for entry in self.extra if entry.tag == 'Service']
elif self.setup['remove'] == 'packages':
self.removal = [entry for entry in self.extra if entry.tag == 'Package']
if self.setup['dryrun']:
updated = [entry for entry in self.states if not self.states[entry]]
if updated:
self.logger.info("In dryrun mode: suppressing entry installation for:")
self.logger.info(["%s:%s" % (entry.tag, entry.get('name')) for entry \
in updated])
if self.removal:
self.logger.info("In dryrun mode: suppressing entry removal for:")
self.logger.info(["%s:%s" % (entry.tag, entry.get('name')) for entry \
in self.removal])
self.removal = []
return
elif self.setup['interactive']:
self.whitelist = promptFilter(prompt, [entry for entry in self.states \
if not self.states[entry]])
self.removal = promptFilter(rprompt, self.removal)
elif self.setup['bundle']:
# only install entries in specified bundle
mbs = [bund for bund in self.config.findall('./Bundle') \
if bund.get('name') == self.setup['bundle']]
if not mbs:
self.logger.error("Could not find bundle %s" % (self.setup['bundle']))
return
self.whitelist = [entry for entry in self.states if not self.states[entry] \
and entry in mbs[0].getchildren()]
else:
# all systems are go
self.whitelist = [entry for entry in self.states if not self.states[entry]]
def DispatchInstallCalls(self, entries):
'''Dispatch install calls to underlying tools'''
for tool in self.tools:
handled = [entry for entry in entries if tool.canInstall(entry)]
if not handled:
continue
try:
tool.Install(handled)
except:
self.logger.error("%s.Install() call failed:" % tool.__name__, exc_info=1)
def Install(self):
'''Install all entries'''
self.DispatchInstallCalls(self.whitelist)
if self.modified:
# Handle Bundle interdeps
mods = self.modified
mbundles = [struct for struct in self.config if struct.tag == 'Bundle' and \
[mod for mod in mods if mod in struct]]
if mbundles:
self.logger.info("The Following Bundles have been modifed:")
self.logger.info([mbun.get('name') for mbun in mbundles])
self.logger.info("")
tbm = [(t, b) for t in self.tools for b in mbundles]
for tool, bundle in tbm:
try:
tool.Inventory(bundle)
except:
self.logger.error("%s.Inventory() call failed:" % tool.__name__, exc_info=1)
clobbered = [entry for bundle in mbundles for entry in bundle \
if not self.states[entry]]
if not self.setup['interactive']:
self.DispatchInstallCalls(clobbered)
for tool, bundle in tbm:
try:
tool.BundleUpdated(bundle)
except:
self.logger.error("%s.BundleUpdated() call failed:" % (tool.__name__), exc_info=1)
def Remove(self):
'''Remove extra entries'''
for tool in self.tools:
extras = [entry for entry in self.removal if tool.handlesEntry(entry)]
if extras:
try:
tool.Remove(extras)
except:
self.logger.error("%s.Remove() failed" % tool.__name__, exc_info=1)
def CondDisplayState(self, phase):
'''Conditionally print tracing information'''
self.logger.info('\nPhase: %s' % phase)
self.logger.info('Correct entries:\t%d' % self.states.values().count(True))
self.logger.info('Incorrect entries:\t%d' % self.states.values().count(False))
self.logger.info('Total managed entries:\t%d' % len(self.states.values()))
self.logger.info('Unmanaged entries:\t%d' % len(self.extra))
self.logger.info("")
if ((self.states.values().count(False) == 0) and not self.extra):
self.logger.info('All entries correct.')
def ReInventory(self):
'''Recheck everything'''
if not self.setup['dryrun'] and self.setup['kevlar']:
self.logger.info("Rechecking system inventory")
self.Inventory()
def Execute(self):
'''Run all methods'''
self.Inventory()
self.times['inventory'] = time.time()
self.CondDisplayState('initial')
self.Decide()
self.Install()
self.times['install'] = time.time()
self.Remove()
self.times['remove'] = time.time()
if self.modified:
self.ReInventory()
self.times['reinventory'] = time.time()
self.times['finished'] = time.time()
self.CondDisplayState('final')
def GenerateStats(self):
'''Generate XML summary of execution statistics'''
feedback = Bcfg2.Client.XML.Element("upload-statistics")
stats = Bcfg2.Client.XML.SubElement(feedback, \
'Statistics', total=str(len(self.states)),
client_version=__revision__, version='2.0',
revision=self.config.get('revision', '-1'))
good = len([key for key, val in self.states.iteritems() if val])
stats.set('good', str(good))
if len([key for key, val in self.states.iteritems() if not val]) == 0:
stats.set('state', 'clean')
else:
stats.set('state', 'dirty')
# List bad elements of the configuration
for (data, ename) in [(self.modified, 'Modified'), (self.extra, "Extra"), \
([entry for entry in self.states if not \
self.states[entry]], "Bad")]:
container = Bcfg2.Client.XML.SubElement(stats, ename)
[container.append(item) for item in data]
timeinfo = Bcfg2.Client.XML.Element("OpStamps")
feedback.append(stats)
for (event, timestamp) in self.times.iteritems():
timeinfo.set(event, str(timestamp))
stats.append(timeinfo)
return feedback
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