def gethtbs(root_xid, default_xid):
"""
Return dict {xid: {*rates}} of running htbs as reported by tc that have names.
Turn off HTBs without names.
"""
livehtbs = {}
for params in bwlimit.get(dev = dev_default):
(xid, share,
minrate, maxrate,
minexemptrate, maxexemptrate,
usedbytes, usedi2bytes) = params
name = bwlimit.get_slice(xid)
if (name is None) \
and (xid != root_xid) \
and (xid != default_xid):
# Orphaned (not associated with a slice) class
name = "%d?" % xid
logger.log("bwmon: Found orphaned HTB %s. Removing." %name)
bwlimit.off(xid, dev = dev_default)
livehtbs[xid] = {'share': share,
'minrate': minrate,
'maxrate': maxrate,
'maxexemptrate': maxexemptrate,
'minexemptrate': minexemptrate,
'usedbytes': usedbytes,
'name': name,
'usedi2bytes': usedi2bytes}
return livehtbs
def allOff():
"""
Turn off all slice HTBs
"""
# Get/set special slice IDs
root_xid = bwlimit.get_xid("root")
default_xid = bwlimit.get_xid("default")
kernelhtbs = gethtbs(root_xid, default_xid)
if len(kernelhtbs):
logger.log("bwmon: Disabling all running HTBs.")
for htb in kernelhtbs.keys(): bwlimit.off(htb, dev = dev_default)
def sync(nmdbcopy):
"""
Syncs tc, db, and bwmon.pickle.
Then, starts new slices, kills old ones, and updates byte accounts for each running slice.
Sends emails and caps those that went over their limit.
"""
# Defaults
global DB_FILE, \
period, \
default_MaxRate, \
default_Maxi2Rate, \
default_MaxKByte,\
default_Maxi2KByte,\
default_Share, \
dev_default
# All slices
names = []
# In case the limits have changed.
default_MaxRate = int(bwlimit.get_bwcap(dev_default) / 1000)
default_Maxi2Rate = int(bwlimit.bwmax / 1000)
# Incase default isn't set yet.
if default_MaxRate == -1:
default_MaxRate = 1000000
try:
f = open(DB_FILE, "r+")
logger.verbose("bwmon: Loading %s" % DB_FILE)
(version, slices, deaddb) = pickle.load(f)
f.close()
# Check version of data file
if version != "$Id$":
logger.log("bwmon: Not using old version '%s' data file %s" % (version, DB_FILE))
raise Exception
except Exception:
version = "$Id$"
slices = {}
deaddb = {}
# Get/set special slice IDs
root_xid = bwlimit.get_xid("root")
default_xid = bwlimit.get_xid("default")
# Since root is required for sanity, its not in the API/plc database, so pass {}
# to use defaults.
if root_xid not in slices.keys():
slices[root_xid] = Slice(root_xid, "root", {})
slices[root_xid].reset({}, {})
# Used by bwlimit. pass {} since there is no rspec (like above).
if default_xid not in slices.keys():
slices[default_xid] = Slice(default_xid, "default", {})
slices[default_xid].reset({}, {})
live = {}
# Get running slivers that should be on this node (from plc). {xid: name}
# db keys on name, bwmon keys on xid. db doesnt have xid either.
for plcSliver in nmdbcopy.keys():
live[bwlimit.get_xid(plcSliver)] = nmdbcopy[plcSliver]
logger.verbose("bwmon: Found %s instantiated slices" % live.keys().__len__())
logger.verbose("bwmon: Found %s slices in dat file" % slices.values().__len__())
# Get actual running values from tc.
# Update slice totals and bandwidth. {xid: {values}}
kernelhtbs = gethtbs(root_xid, default_xid)
logger.verbose("bwmon: Found %s running HTBs" % kernelhtbs.keys().__len__())
# The dat file has HTBs for slices, but the HTBs aren't running
nohtbslices = set(slices.keys()) - set(kernelhtbs.keys())
logger.verbose( "bwmon: Found %s slices in dat but not running." % nohtbslices.__len__())
# Reset tc counts.
for nohtbslice in nohtbslices:
if live.has_key(nohtbslice):
slices[nohtbslice].reset( {}, live[nohtbslice]['_rspec'] )
else:
logger.log("bwmon: Removing abondoned slice %s from dat." % nohtbslice)
del slices[nohtbslice]
# The dat file doesnt have HTB for the slice but kern has HTB
slicesnodat = set(kernelhtbs.keys()) - set(slices.keys())
logger.verbose( "bwmon: Found %s slices with HTBs but not in dat" % slicesnodat.__len__())
for slicenodat in slicesnodat:
# But slice is running
if live.has_key(slicenodat):
# init the slice. which means start accounting over since kernel
# htb was already there.
slices[slicenodat] = Slice(slicenodat,
live[slicenodat]['name'],
live[slicenodat]['_rspec'])
# Get new slices.
# Slices in GetSlivers but not running HTBs
newslicesxids = set(live.keys()) - set(kernelhtbs.keys())
logger.verbose("bwmon: Found %s new slices" % newslicesxids.__len__())
# Setup new slices
for newslice in newslicesxids:
# Delegated slices dont have xids (which are uids) since they haven't been
# instantiated yet.
if newslice != None and live[newslice].has_key('_rspec') == True:
# Check to see if we recently deleted this slice.
if live[newslice]['name'] not in deaddb.keys():
logger.log( "bwmon: new slice %s" % live[newslice]['name'] )
# _rspec is the computed rspec: NM retrieved data from PLC, computed loans
# and made a dict of computed values.
slices[newslice] = Slice(newslice, live[newslice]['name'], live[newslice]['_rspec'])
slices[newslice].reset( {}, live[newslice]['_rspec'] )
# Double check time for dead slice in deaddb is within 24hr recording period.
elif (time.time() <= (deaddb[live[newslice]['name']]['slice'].time + period)):
deadslice = deaddb[live[newslice]['name']]
logger.log("bwmon: Reinstantiating deleted slice %s" % live[newslice]['name'])
slices[newslice] = deadslice['slice']
slices[newslice].xid = newslice
# Start the HTB
newvals = {"maxrate": deadslice['slice'].MaxRate * 1000,
"minrate": deadslice['slice'].MinRate * 1000,
"maxexemptrate": deadslice['slice'].Maxi2Rate * 1000,
"usedbytes": deadslice['htb']['usedbytes'] * 1000,
"usedi2bytes": deadslice['htb']['usedi2bytes'],
"share":deadslice['htb']['share']}
slices[newslice].reset(newvals, live[newslice]['_rspec'])
# Bring up to date
slices[newslice].update(newvals, live[newslice]['_rspec'])
# Since the slice has been reinitialed, remove from dead database.
del deaddb[deadslice['slice'].name]
del newvals
else:
logger.log("bwmon: Slice %s doesn't have xid. Skipping." % live[newslice]['name'])
# Move dead slices that exist in the pickle file, but
# aren't instantiated by PLC into the dead dict until
# recording period is over. This is to avoid the case where a slice is dynamically created
# and destroyed then recreated to get around byte limits.
deadxids = set(slices.keys()) - set(live.keys())
logger.verbose("bwmon: Found %s dead slices" % (deadxids.__len__() - 2))
for deadxid in deadxids:
if deadxid == root_xid or deadxid == default_xid:
continue
logger.log("bwmon: removing dead slice %s " % deadxid)
if slices.has_key(deadxid) and kernelhtbs.has_key(deadxid):
# add slice (by name) to deaddb
logger.log("bwmon: Saving bandwidth totals for %s." % slices[deadxid].name)
deaddb[slices[deadxid].name] = {'slice': slices[deadxid], 'htb': kernelhtbs[deadxid]}
del slices[deadxid]
if kernelhtbs.has_key(deadxid):
logger.verbose("bwmon: Removing HTB for %s." % deadxid)
bwlimit.off(deadxid, dev = dev_default)
# Clean up deaddb
for deadslice in deaddb.keys():
if (time.time() >= (deaddb[deadslice]['slice'].time + period)):
logger.log("bwmon: Removing dead slice %s from dat." \
% deaddb[deadslice]['slice'].name)
del deaddb[deadslice]
# Get actual running values from tc since we've added and removed buckets.
# Update slice totals and bandwidth. {xid: {values}}
kernelhtbs = gethtbs(root_xid, default_xid)
logger.verbose("bwmon: now %s running HTBs" % kernelhtbs.keys().__len__())
# Update all byte limites on all slices
for (xid, slice) in slices.iteritems():
# Monitor only the specified slices
if xid == root_xid or xid == default_xid: continue
if names and name not in names:
continue
if (time.time() >= (slice.time + period)) or \
(kernelhtbs[xid]['usedbytes'] < slice.bytes) or \
(kernelhtbs[xid]['usedi2bytes'] < slice.i2bytes):
# Reset to defaults every 24 hours or if it appears
# that the byte counters have overflowed (or, more
# likely, the node was restarted or the HTB buckets
# were re-initialized).
slice.reset(kernelhtbs[xid], live[xid]['_rspec'])
elif ENABLE:
logger.verbose("bwmon: Updating slice %s" % slice.name)
# Update byte counts
slice.update(kernelhtbs[xid], live[xid]['_rspec'])
logger.verbose("bwmon: Saving %s slices in %s" % (slices.keys().__len__(),DB_FILE))
f = open(DB_FILE, "w")
pickle.dump((version, slices, deaddb), f)
f.close()
