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#import lxml.etree
import logging
import binascii
import difflib
#import sqlalchemy
#import sqlalchemy.orm
import Bcfg2.Server.Plugin
import Bcfg2.Server.Snapshots
import Bcfg2.Logger
from Bcfg2.Server.Snapshots.model import Snapshot
import sys
import time
import threading
# Compatibility import
from Bcfg2.Bcfg2Py3k import Queue
logger = logging.getLogger('Snapshots')
ftypes = ['ConfigFile', 'SymLink', 'Directory']
datafields = {
'Package': ['version'],
'Path': ['type'],
'Service': ['status'],
'ConfigFile': ['owner', 'group', 'perms'],
'Directory': ['owner', 'group', 'perms'],
'SymLink': ['to'],
}
# py3k compatibility
def u_str(string):
if sys.hexversion >= 0x03000000:
return string
else:
return unicode(string)
def build_snap_ent(entry):
basefields = []
if entry.tag in ['Package', 'Service']:
basefields += ['type']
desired = dict([(key, u_str(entry.get(key))) for key in basefields])
state = dict([(key, u_str(entry.get(key))) for key in basefields])
desired.update([(key, u_str(entry.get(key))) for key in \
datafields[entry.tag]])
if entry.tag == 'ConfigFile' or \
((entry.tag == 'Path') and (entry.get('type') == 'file')):
if entry.text == None:
desired['contents'] = None
else:
if entry.get('encoding', 'ascii') == 'ascii':
desired['contents'] = u_str(entry.text)
else:
desired['contents'] = u_str(binascii.a2b_base64(entry.text))
if 'current_bfile' in entry.attrib:
state['contents'] = u_str(binascii.a2b_base64( \
entry.get('current_bfile')))
elif 'current_bdiff' in entry.attrib:
diff = binascii.a2b_base64(entry.get('current_bdiff'))
state['contents'] = u_str( \
'\n'.join(difflib.restore(diff.split('\n'), 1)))
state.update([(key, u_str(entry.get('current_' + key, entry.get(key)))) \
for key in datafields[entry.tag]])
if entry.tag in ['ConfigFile', 'Path'] and entry.get('exists', 'true') == 'false':
state = None
return [desired, state]
class Snapshots(Bcfg2.Server.Plugin.Statistics,
Bcfg2.Server.Plugin.Plugin):
name = 'Snapshots'
experimental = True
def __init__(self, core, datastore):
Bcfg2.Server.Plugin.Plugin.__init__(self, core, datastore)
Bcfg2.Server.Plugin.Statistics.__init__(self)
self.session = Bcfg2.Server.Snapshots.setup_session(core.cfile)
self.work_queue = Queue()
self.loader = threading.Thread(target=self.load_snapshot)
self.loader.start()
def load_snapshot(self):
while self.running:
try:
(metadata, data) = self.work_queue.get(block=True, timeout=5)
except:
continue
self.statistics_from_old_stats(metadata, data)
def process_statistics(self, metadata, data):
return self.work_queue.put((metadata, data))
def statistics_from_old_stats(self, metadata, xdata):
# entries are name -> (modified, correct, start, desired, end)
# not sure we can get all of this from old format stats
t1 = time.time()
entries = dict([('Package', dict()),
('Service', dict()), ('Path', dict())])
extra = dict([('Package', dict()), ('Service', dict()),
('Path', dict())])
bad = []
state = xdata.find('.//Statistics')
correct = state.get('state') == 'clean'
revision = u_str(state.get('revision', '-1'))
for entry in state.find('.//Bad'):
data = [False, False, u_str(entry.get('name'))] \
+ build_snap_ent(entry)
if entry.tag in ftypes:
etag = 'Path'
else:
etag = entry.tag
entries[etag][entry.get('name')] = data
for entry in state.find('.//Modified'):
if entry.tag in ftypes:
etag = 'Path'
else:
etag = entry.tag
if entry.get('name') in entries[etag]:
data = [True, False, u_str(entry.get('name'))] + \
build_snap_ent(entry)
else:
data = [True, False, u_str(entry.get('name'))] + \
build_snap_ent(entry)
for entry in state.find('.//Extra'):
if entry.tag in datafields:
data = build_snap_ent(entry)[1]
ename = u_str(entry.get('name'))
data['name'] = ename
extra[entry.tag][ename] = data
else:
print("extra", entry.tag, entry.get('name'))
t2 = time.time()
snap = Snapshot.from_data(self.session, correct, revision,
metadata, entries, extra)
self.session.add(snap)
self.session.commit()
t3 = time.time()
logger.info("Snapshot storage took %fs" % (t3 - t2))
return True
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