def detachThin(session, lvmCache, srUuid, vdiUuid):
"""Shrink the VDI to the minimal size if no one is using it"""
lvName = LV_PREFIX[vhdutil.VDI_TYPE_VHD] + vdiUuid
path = os.path.join(VG_LOCATION, VG_PREFIX + srUuid, lvName)
lock = Lock(vhdutil.LOCK_TYPE_SR, srUuid)
_tryAcquire(lock)
vdiRef = session.xenapi.VDI.get_by_uuid(vdiUuid)
vbds = session.xenapi.VBD.get_all_records_where( \
"field \"VDI\" = \"%s\"" % vdiRef)
numPlugged = 0
for vbdRec in vbds.values():
if vbdRec["currently_attached"]:
numPlugged += 1
if numPlugged > 1:
raise util.SMException("%s still in use by %d others" % \
(vdiUuid, numPlugged - 1))
lvmCache.activate(NS_PREFIX_LVM + srUuid, vdiUuid, lvName, False)
try:
newSize = calcSizeLV(vhdutil.getSizePhys(path))
deflate(lvmCache, lvName, newSize)
finally:
lvmCache.deactivate(NS_PREFIX_LVM + srUuid, vdiUuid, lvName, False)
lock.release()
def daemonize(args, callback):
with DaemonContext():
create_process = False
lock = Lock(LOCKFILE, os.getpid(), args.name, args.sea_ep[0],
args.sea_ep[1], args.port)
if lock.is_locked():
lock_pid = lock.get_pid()
if not lock.is_same_file(args.name, args.sea_ep[0],
args.sea_ep[1]) \
or not is_process_running(lock_pid):
try:
os.kill(lock_pid, signal.SIGQUIT)
except OSError:
pass
except TypeError:
pass
lock.break_lock()
create_process = True
else:
create_process = True
if create_process:
lock.acquire()
callback(args.name, season=args.sea_ep[0], episode=args.sea_ep[1],
serve=True, port=args.port)
lock.release()
class PhysicalView(Base):
def __init__(self, dfs):
Base.__init__(self, dfs)
self.lock_ = Lock(dfs)
self.createBaseFolder()
def read(self, fileName, buf, offset, bufsize):
# TODO add thread safetly
filePath = os.path.join(self.getBasePath(), fileName)
size = self.getFileSize(fileName)
if offset + bufsize > size:
self.log_.w('tried to read ' + fileName + ' but size is ' + str(size) +
' and bufsize + offset = ' + str(offset + bufsize))
return err.InvalidBufferSize
self.lock_.acquire()
try:
f = open(filePath, "r")
except Exception, ex:
self.log_.e('error opening file in read mode ' + filePath + ': ' + str(ex))
self.lock_.release()
return err.FileNotFound
status = err.OK
f.seek(offset)
try:
data = f.read(bufsize)
for i, d in enumerate(data):
buf[i] = d
except Exception, ex:
self.log_.e('failed to read ' + filePath + ' from ' + str(offset) + ' to ' + str(offset + bufsize) + ': ' + str(ex))
status = err.CannotReadFile
class Test02_MfcLock(unittest.TestCase):
'''Unittest for mfc1.Lock().'''
def setUp(self):
'''Prepare test.'''
self.__lock = Lock('./', 'andy')
def test_get_pid(self):
'''Testing mfc1.Lock.get_pid().'''
r = self.__lock.get_pid('mindfulclock1')
self.failUnlessEqual(first=r, second=0)
def test_one_instance(self):
'''Testing mfc1.Lock.one_instance().'''
r = self.__lock.one_instance('mindfulclock1')
self.failUnlessEqual(first=r, second=True)
def test_write_check_delete_lock(self):
'''Testing write_lock(), check_lock(), delete_lock().'''
r = self.__lock.write_lock()
self.failUnlessEqual(first=r, second=True)
# chek lock file.
r = self.__lock.is_lock()
self.failUnlessEqual(first=r, second=True)
# delete lock file.
r = self.__lock.delete_lock()
self.failUnlessEqual(first=r, second=True)
def main():
lock=Lock()
lock.set_server_url("http://20.20.20.157:5000/validate-pin")
# lock.set_wifi_conf("GOT","MASTER2D")
lock.connect_to_wifi()
lock.set_rc522_uid_addr(0x08)
lock.run()
def _kickGC(self):
# don't bother if an instance already running (this is just an
# optimization to reduce the overhead of forking a new process if we
# don't have to, but the process will check the lock anyways)
lockRunning = Lock(cleanup.LOCK_TYPE_RUNNING, self.uuid)
if not lockRunning.acquireNoblock():
if cleanup.should_preempt(self.session, self.uuid):
util.SMlog(
"Aborting currently-running coalesce of garbage VDI")
try:
if not cleanup.abort(self.uuid, soft=True):
util.SMlog("The GC has already been scheduled to "
"re-start")
except util.CommandException as e:
if e.code != errno.ETIMEDOUT:
raise
util.SMlog('failed to abort the GC')
finally:
return
else:
util.SMlog("A GC instance already running, not kicking")
return
else:
lockRunning.release()
util.SMlog("Kicking GC")
cleanup.gc(self.session, self.uuid, True)
class Test02_MfcLock(unittest.TestCase):
"""Unittest for mfc1.Lock()."""
def setUp(self):
"""Prepare test."""
self.lock = Lock("./", "andy")
def test_get_pid(self):
"""Testing mfc1.Lock.get_pid()."""
r = self.lock.get_pid("mindfulclock1")
self.failUnlessEqual(first=r, second=0)
def test_one_instance(self):
"""Testing mfc1.Lock.one_instance()."""
r = self.lock.one_instance("mindfulclock1")
self.failUnlessEqual(first=r, second=True)
def test_write_check_delete_lock(self):
"""Testing write_lock(), check_lock(), delete_lock()."""
r = self.lock.write_lock()
self.failUnlessEqual(first=r, second=True)
# chek lock file.
r = self.lock.is_lock()
self.failUnlessEqual(first=r, second=True)
# delete lock file.
r = self.lock.delete_lock()
self.failUnlessEqual(first=r, second=True)
class Test02_MfcLock(unittest.TestCase):
'''Unittest for mfc1.Lock().'''
def setUp(self):
'''Prepare test.'''
self.__lock = Lock('./', 'andy')
def test_delete_lock(self):
'''Testing mfc1.Lock.delete_lock().'''
r = self.__lock.delete_lock()
self.failUnlessEqual(first=r, second=False)
def test_is_lock(self):
'''Testing mfc1.Lock.is_lock().'''
r = self.__lock.is_lock()
self.failUnlessEqual(first=r, second=False)
def test_write_lock(self):
'''Testing mfc1.Lock.write_lock().'''
r = self.__lock.write_lock()
self.failUnlessEqual(first=r, second=True)
# chek lock file.
r = self.__lock.is_lock()
self.failUnlessEqual(first=r, second=True)
# delete lock file.
r = self.__lock.delete_lock()
self.failUnlessEqual(first=r, second=True)
def daemonize(args, callback):
with DaemonContext():
from touchandgo.logger import log_set_up
log_set_up(True)
log = logging.getLogger('touchandgo.daemon')
log.info("running daemon")
create_process = False
lock = Lock(LOCKFILE, os.getpid(), args.name, args.sea_ep[0],
args.sea_ep[1], args.port)
if lock.is_locked():
log.debug("lock active")
lock_pid = lock.get_pid()
if not lock.is_same_file(args.name, args.sea_ep[0],
args.sea_ep[1]) \
or not is_process_running(lock_pid):
try:
log.debug("killing process %s" % lock_pid)
os.kill(lock_pid, signal.SIGQUIT)
except OSError:
pass
except TypeError:
pass
lock.break_lock()
create_process = True
else:
create_process = True
if create_process:
log.debug("creating proccess")
lock.acquire()
callback()
lock.release()
else:
log.debug("same daemon process")
class Test02_MfcLock(unittest.TestCase):
'''Unittest for mfc1.Lock().'''
def setUp(self):
'''Prepare test.'''
self.lock = Lock('./', 'andy')
def test_get_pid(self):
'''Testing mfc1.Lock.get_pid().'''
r = self.lock.get_pid('mindfulclock1')
self.failUnlessEqual(first=r, second=0)
def test_one_instance(self):
'''Testing mfc1.Lock.one_instance().'''
r = self.lock.one_instance('mindfulclock1')
self.failUnlessEqual(first=r, second=True)
def test_write_check_delete_lock(self):
'''Testing write_lock(), check_lock(), delete_lock().'''
r = self.lock.write_lock()
self.failUnlessEqual(first=r, second=True)
# chek lock file.
r = self.lock.is_lock()
self.failUnlessEqual(first=r, second=True)
# delete lock file.
r = self.lock.delete_lock()
self.failUnlessEqual(first=r, second=True)
def testStateUnlocked(self):
testState2: bool = False
lock2 = Lock(state=testState2)
lock2.set_needKey = testState2
self.assertEqual(lock2._state,
False) #It isn't being called here either
self.assertEqual(lock2._needKey, False)
def lock_file(self):
'''Handle the mc1.Lock object. Public objects:
lock = mfc1.Lock
lockstate = Status of the lock file.
'' = No status.
'written' = Lock file is written
'deleted' = Lock file is deleted
'exit' = Program exit
'''
userid = wx.GetUserId()
wxpath = wx.StandardPaths.Get()
userdir = wxpath.GetDocumentsDir()
self.lock = Lock(path=userdir, userid=userid)
self.lockstate = ''
if self.lock.one_instance('mindfulclock1'):
# One instance.
self.lock.write_lock()
self.lockstate = 'written'
else:
# More than one instance.
if self.start_question():
# Start the clock.
self.lock.write_lock()
self.lockstate = 'written'
else:
# Exit the program.
self.lockstate = 'exit'
class Election:
def __init__(self, name, is_master_callback, lost_master_callback):
self.lock = Lock(name,
lock_callback=self._lock,
lock_lost_callback=self._lost_lock)
self.master_callback = is_master_callback
self.lost_master_callback = lost_master_callback
self.running = False
self.condition = threading.Condition()
def shutdown(self):
self.running = False
self.condition.acquire()
self.condition.notify()
self.condition.release()
def run(self):
self.running = True
while self.running:
self.lock.acquire()
self.condition.acquire()
self.condition.wait()
self.condition.release()
self.lock.release()
def _lock(self):
self.master_callback()
def _lost_lock(self):
self.lost_master_callback()
def detachThin(session, lvmCache, srUuid, vdiUuid):
"""Shrink the VDI to the minimal size if no one is using it"""
lvName = LV_PREFIX[vhdutil.VDI_TYPE_VHD] + vdiUuid
path = os.path.join(VG_LOCATION, VG_PREFIX + srUuid, lvName)
lock = Lock(vhdutil.LOCK_TYPE_SR, srUuid)
_tryAcquire(lock)
vdiRef = session.xenapi.VDI.get_by_uuid(vdiUuid)
vbds = session.xenapi.VBD.get_all_records_where( \
"field \"VDI\" = \"%s\"" % vdiRef)
numPlugged = 0
for vbdRec in vbds.values():
if vbdRec["currently_attached"]:
numPlugged += 1
if numPlugged > 1:
raise util.SMException("%s still in use by %d others" % \
(vdiUuid, numPlugged - 1))
lvmCache.activate(NS_PREFIX_LVM + srUuid, vdiUuid, lvName, False)
try:
newSize = calcSizeLV(vhdutil.getSizePhys(path))
deflate(lvmCache, lvName, newSize)
finally:
lvmCache.deactivate(NS_PREFIX_LVM + srUuid, vdiUuid, lvName, False)
lock.release()
def test_release_free_resource():
"""
TestCase Senario:
trying to send a release request for a free resource which is not allowed
so the wrong message response is expected.
"""
#targeted resource and client_address
resource_name = 'resourceX'
client_address = '127.0.0.1'
client_lock = Lock(resource_name, client_address)
status = client_lock.check_status()
#initiate socket s and send the release request for resourceX
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((HOST, PORT))
s.sendall('release resourceX')
data = s.recv(1024)
#expecting error message as a response
assert data == 'resource is already free.'
# the status of the resource was free and still free
assert client_lock.check_status() == 'free'
#close the socket client
s.close()
def checkLocked(obj, ns):
"""Lock-protected access"""
lock = Lock(obj, ns)
lock.acquire()
try:
return RefCounter.check(obj, ns)
finally:
lock.release()
def __init__(self, name, is_master_callback, lost_master_callback):
self.lock = Lock(name,
lock_callback=self._lock,
lock_lost_callback=self._lost_lock)
self.master_callback = is_master_callback
self.lost_master_callback = lost_master_callback
self.running = False
self.condition = threading.Condition()
def setReadonly(self, lvName, readonly):
path = self._getPath(lvName)
if self.lvs[lvName].readonly != readonly:
uuids = util.findall_uuid(path)
ns = lvhdutil.NS_PREFIX_LVM + uuids[0]
lock = Lock(uuids[1], ns)
lock.acquire()
lvutil.setReadonly(path, readonly)
lock.release()
self.lvs[lvName].readonly = readonly
def setReadonly(self, lvName, readonly):
path = self._getPath(lvName)
if self.lvs[lvName].readonly != readonly:
uuids = util.findall_uuid(path)
ns = lvhdutil.NS_PREFIX_LVM + uuids[0]
# Taking this lock is needed to avoid a race condition
# with tap-ctl open (which is now taking the same lock)
lock = Lock("lvchange-p", ns)
lock.acquire()
lvutil.setReadonly(path, readonly)
lock.release()
self.lvs[lvName].readonly = readonly
def activate(self, ns, ref, lvName, binary):
lock = Lock(ref, ns)
lock.acquire()
try:
count = RefCounter.get(ref, binary, ns)
if count == 1:
try:
self.activateNoRefcount(lvName)
except util.CommandException:
RefCounter.put(ref, binary, ns)
raise
finally:
lock.release()
def _cbt_op(self, uuid, func, *args):
# Lock cbtlog operations
from lock import Lock
lock = Lock("cbtlog", str(uuid))
lock.acquire()
try:
logname = self._get_cbt_logname(uuid)
activated = self._activate_cbt_log(logname)
ret = func(*args)
if activated:
self._deactivate_cbt_log(logname)
return ret
finally:
lock.release()
def deactivate(self, sr_uuid, vdi_uuid):
"""Deactivate VDI - called post tapdisk close"""
if self._get_blocktracking_status():
from lock import Lock
lock = Lock("cbtlog", str(vdi_uuid))
lock.acquire()
try:
logpath = self._get_cbt_logpath(vdi_uuid)
logname = self._get_cbt_logname(vdi_uuid)
self._cbt_op(vdi_uuid, cbtutil.set_cbt_consistency, logpath, True)
# Finally deactivate log file
self._deactivate_cbt_log(logname)
finally:
lock.release()
def load(self, sr_uuid):
self.ops_exclusive = FileSR.OPS_EXCLUSIVE
self.lock = Lock(vhdutil.LOCK_TYPE_SR, self.uuid)
self.sr_vditype = SR.DEFAULT_TAP
self.driver_config = DRIVER_CONFIG
if not self.dconf.has_key('server'):
raise xs_errors.XenError('ConfigServerMissing')
self.remoteserver = self.dconf['server']
self.nosubdir = False
if self.sr_ref and self.session is not None:
self.sm_config = self.session.xenapi.SR.get_sm_config(self.sr_ref)
else:
self.sm_config = self.srcmd.params.get('sr_sm_config') or {}
self.nosubdir = self.sm_config.get('nosubdir') == "true"
if self.dconf.has_key('serverpath'):
self.remotepath = os.path.join(self.dconf['serverpath'],
not self.nosubdir and sr_uuid
or "").encode('utf-8')
self.path = os.path.join(SR.MOUNT_BASE, sr_uuid)
# Handle optional dconf attributes
self.transport = DEFAULT_TRANSPORT
if self.dconf.has_key('useUDP') and self.dconf['useUDP'] == 'true':
self.transport = "udp"
self.nfsversion = nfs.validate_nfsversion(self.dconf.get('nfsversion'))
if 'options' in self.dconf:
self.options = self.dconf['options']
else:
self.options = ''
def get_agencies(cls, truncate=True):
"""
Get a list of agencies
"""
with Lock("agencies"):
request_params = {
'command': 'agencyList',
}
agencies_xml, api_call = cls.request(request_params, 'agency')
if not agencies_xml:
return []
db.session.begin()
if truncate:
db.session.query(Agency).delete()
agencies = []
for agency in agencies_xml:
region = Region.get_or_create(db.session,
title=agency.get('regionTitle'))
a = Agency.get_or_create(db.session,
tag=agency.get('tag'),
title=agency.get('title'),
short_title=agency.get('shortTitle'),
region=region,
api_call=api_call)
agencies.append(a)
db.session.commit()
return agencies
def __init__(self, config):
"""A valid individual able to run tasks.
Must be validated as a prerequisite
Args:
config: a self.config ConfigParser object.
"""
self.__config = config
self.__subjectDir = self.__config.get('arguments', 'subjectDir')
self.__name = os.path.basename(self.__subjectDir)
self.__logDir = os.path.join(self.__subjectDir, self.__config.get('dir', 'log'))
if not os.path.exists(self.__logDir):
os.mkdir(self.__logDir)
Lock.__init__(self, self.__logDir, self.__name)
def deactivateVdi(sr_uuid, vdi_uuid, vhd_path):
name_space = lvhdutil.NS_PREFIX_LVM + sr_uuid
lock = Lock(vdi_uuid, name_space)
lock.acquire()
try:
count = RefCounter.put(vdi_uuid, False, name_space)
if count > 0:
return
try:
lvutil.deactivateNoRefcount(vhd_path)
except Exception, e:
util.SMlog(" lv de-activate failed for %s with error %s" %
(vhd_path, str(e)))
RefCounter.get(vdi_uuid, False, name_space)
finally:
lock.release()
def _kickGC(self):
# don't bother if an instance already running (this is just an
# optimization to reduce the overhead of forking a new process if we
# don't have to, but the process will check the lock anyways)
lockRunning = Lock(cleanup.LOCK_TYPE_RUNNING, self.uuid)
if not lockRunning.acquireNoblock():
if cleanup.should_preempt(self.session, self.uuid):
util.SMlog("Aborting currently-running coalesce of garbage VDI")
try:
if not cleanup.abort(self.uuid, soft=True):
util.SMlog("The GC has already been scheduled to " "re-start")
except util.CommandException, e:
if e.code != errno.ETIMEDOUT:
raise
util.SMlog("failed to abort the GC")
finally:
class LockTest(unittest.TestCase):
def setUp(self):
self.lock=Lock('3176','BE', 'normal')
def test_lockstring(self):
self.assertEqual(str(self.lock), '3176 locked')
def test_getStatus(self):
self.assertEqual(self.lock.getStatus(), 'locked')
def test_setStatus(self):
self.lock.setStatus('unlocked')
self.assertEqual(self.lock.getStatus(), 'unlocked')
def test_GetDoor(self):
self.assertEqual(self.lock.getDoor(), '3176')
def OnAddedToSpace(self, ballpark, dbspacecomponent):
persister = Persister(ballpark.solarsystemID, self.itemID,
dbspacecomponent)
bountyEscrowBonus, bounties = persister.GetStateForSystem()
iskRegistry = IskRegistry(bounties)
iskMover = IskMover(ballpark.broker.account)
itemCreator = GetItemCreator(ballpark.inventory2, ballpark,
self.attributes.tagTypeIDs.keys())
escrow = Escrow(self, ballpark, iskRegistry, iskMover, itemCreator,
persister)
item = ballpark.inventory2.GetItem(self.itemID)
eventLogger = EventLogger(ballpark.broker.eventLog,
ballpark.solarsystemID, item.ownerID,
self.itemID)
notifier = Notifier(ballpark.broker.notificationMgr)
self.rangeNotifier = RangeNotifier(ballpark.solarsystemID, ballpark,
ballpark.broker.machoNet,
self.GetWallclockTime)
ballpark.proximityRegistry.RegisterForProximity(
self.itemID, 30000, self.rangeNotifier.PlayerInRange)
lock = Lock(self)
self.warpScrambler = WarpScrambler(self.itemID, lock, ballpark.dogmaLM)
self.Initialize(ballpark, escrow, lock, persister, eventLogger,
notifier)
self.escrow.SetBonus(bountyEscrowBonus)
def __init__(self, config):
"""A valid individual able to run tasks.
Must be validated as a prerequisite
Args:
config: a self.config ConfigParser object.
"""
self.__config = config
self.__subjectDir = self.__config.get('arguments', 'subjectDir')
self.__name = os.path.basename(self.__subjectDir)
self.__logDir = os.path.join(self.__subjectDir,
self.__config.get('dir', 'log'))
if not os.path.exists(self.__logDir):
os.mkdir(self.__logDir)
Lock.__init__(self, self.__logDir, self.__name)
def _kickGC(self):
# don't bother if an instance already running (this is just an
# optimization to reduce the overhead of forking a new process if we
# don't have to, but the process will check the lock anyways)
lockRunning = Lock(cleanup.LOCK_TYPE_RUNNING, self.uuid)
if not lockRunning.acquireNoblock():
if cleanup.should_preempt(self.session, self.uuid):
util.SMlog("Aborting currently-running coalesce of garbage VDI")
cleanup.abort(self.uuid)
else:
util.SMlog("A GC instance already running, not kicking")
return
else:
lockRunning.release()
util.SMlog("Kicking GC")
cleanup.gc(self.session, self.uuid, True)
def load(self, sr_uuid):
self.ops_exclusive = OPS_EXCLUSIVE
self.lock = Lock(vhdutil.LOCK_TYPE_SR, self.uuid)
self.sr_vditype = vhdutil.VDI_TYPE_VHD
if not self.dconf.has_key('location') or not self.dconf['location']:
raise xs_errors.XenError('ConfigLocationMissing')
self.path = self.dconf['location']
self.attached = False
def attachThin(journaler, srUuid, vdiUuid):
"""Ensure that the VDI LV is expanded to the fully-allocated size"""
lvName = LV_PREFIX[VDI_TYPE_VHD] + vdiUuid
vgName = VG_PREFIX + srUuid
lock = Lock(vhdutil.LOCK_TYPE_SR, srUuid)
lvmCache = journaler.lvmCache
lock.acquire()
vhdInfo = vhdutil.getVHDInfoLVM(lvName, extractUuid, vgName)
newSize = calcSizeVHDLV(vhdInfo.sizeVirt)
currSizeLV = lvmCache.getSize(lvName)
if newSize <= currSizeLV:
return
lvmCache.activate(NS_PREFIX_LVM + srUuid, vdiUuid, lvName, False)
try:
inflate(journaler, srUuid, vdiUuid, newSize)
finally:
lvmCache.deactivate(NS_PREFIX_LVM + srUuid, vdiUuid, lvName, False)
lock.release()
def _kickGC(self):
# don't bother if an instance already running (this is just an
# optimization to reduce the overhead of forking a new process if we
# don't have to, but the process will check the lock anyways)
lockRunning = Lock(cleanup.LOCK_TYPE_RUNNING, self.uuid)
if not lockRunning.acquireNoblock():
if cleanup.should_preempt(self.session, self.uuid):
util.SMlog(
"Aborting currently-running coalesce of garbage VDI")
cleanup.abort(self.uuid)
else:
util.SMlog("A GC instance already running, not kicking")
return
else:
lockRunning.release()
util.SMlog("Kicking GC")
cleanup.gc(self.session, self.uuid, True)
def __init__(self, dfs, fileSystem):
NetworkThread.__init__(self, dfs)
self.fileSystem_ = fileSystem
self.listeners_ = []
self.peerLock_ = Lock(dfs, 'peer')
self.workQueue_ = []
self.work_ = None
self.knownPeers_ = set()
self.fileFetchStatus = []
def test_lock_resource_then_die():
"""
TestCase Senario:
the client try to lock the resourceX then this client die.
when the connection between the client and the server is down, the server should release the
lock on the resourceX automatically
"""
#targeted resource and client_address
resource_name = 'resourceX'
resource_id = get_resource_id_by_name(resource_name)[0]
client_address = '127.0.0.1'
client_lock = Lock(resource_name, client_address)
status = client_lock.check_status()
#initiate socket s and send the request access to resourceX
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((HOST, PORT))
if status == 'free':
s.sendall('lock resourceX')
data = s.recv(1024)
# make sure the access is granted
assert data == 'You have an exclusive access to resource resourceX'
assert client_lock.check_status() == 'busy'
# make sure this operation stored into the db
#select operations
# client_ip_address, operation_time, operation_type
operations = get_operations_by_resource_id(resource_id)
assert len(operations) == 1
assert operations[0][0] == client_address
assert operations[0][2] == "lock"
#delete operations
delete_operation_by_resource_id(resource_id)
# the client terminate the connection
s.close()
# sleep for 5 seconds to make sure the server cleaning up is done
time.sleep(5)
# make sure the server make resourceX free after the client die
assert client_lock.check_status() == 'free'
def activate(self, sr_uuid, vdi_uuid):
"""Activate VDI - called pre tapdisk open"""
if self._get_blocktracking_status():
from lock import Lock
lock = Lock("cbtlog", str(vdi_uuid))
lock.acquire()
try:
logpath = self._get_cbt_logpath(vdi_uuid)
logname = self._get_cbt_logname(vdi_uuid)
# Activate CBT log file, if required
self._activate_cbt_log(logname)
finally:
lock.release()
# Check and update consistency
consistent = self._cbt_op(vdi_uuid, cbtutil.get_cbt_consistency,
logpath)
if not consistent:
lock.acquire()
try:
self._delete_cbt_log()
finally:
lock.release()
vdi_ref = self.sr.srcmd.params['vdi_ref']
self.sr.session.xenapi.VDI.set_cbt_enabled(vdi_ref, False)
alert_name = "VDI_CBT_METADATA_INCONSISTENT"
alert_prio_warning = "3"
alert_obj = "VDI"
alert_uuid = str(vdi_uuid)
alert_str = ("Changed Block Tracking metadata is inconsistent"
" for disk %s." % vdi_uuid)
util.SMlog(alert_str)
self.sr.session.xenapi.message.create(alert_name,
alert_prio_warning,
alert_obj, alert_uuid,
alert_str)
return None
self._cbt_op(self.uuid, cbtutil.set_cbt_consistency, logpath,
False)
return {'cbtlog': logpath}
return None
def attachThin(journaler, srUuid, vdiUuid):
"""Ensure that the VDI LV is expanded to the fully-allocated size"""
lvName = LV_PREFIX[vhdutil.VDI_TYPE_VHD] + vdiUuid
vgName = VG_PREFIX + srUuid
lock = Lock(vhdutil.LOCK_TYPE_SR, srUuid)
lvmCache = journaler.lvmCache
_tryAcquire(lock)
lvmCache.refresh()
vhdInfo = vhdutil.getVHDInfoLVM(lvName, extractUuid, vgName)
newSize = calcSizeVHDLV(vhdInfo.sizeVirt)
currSizeLV = lvmCache.getSize(lvName)
if newSize <= currSizeLV:
return
lvmCache.activate(NS_PREFIX_LVM + srUuid, vdiUuid, lvName, False)
try:
inflate(journaler, srUuid, vdiUuid, newSize)
finally:
lvmCache.deactivate(NS_PREFIX_LVM + srUuid, vdiUuid, lvName, False)
lock.release()
def load(self, sr_uuid):
self.ops_exclusive = FileSR.OPS_EXCLUSIVE
self.lock = Lock(vhdutil.LOCK_TYPE_SR, self.uuid)
self.sr_vditype = SR.DEFAULT_TAP
self.path = os.path.join(SR.MOUNT_BASE, sr_uuid)
self.vgname = EXT_PREFIX + sr_uuid
self.remotepath = os.path.join("/dev", self.vgname, sr_uuid)
self.attached = self._checkmount()
self.driver_config = DRIVER_CONFIG
def __init__(self, config):
"""A valid individual who have the capability to run tasks.
This class have the responsability to write a document of the softwares and versions
into the log directory
Must be validated as a prerequisite
Args:
config: a self.config ConfigParser object.
"""
self.__config = config
self.__subjectDir = self.__config.get('arguments', 'subjectDir')
self.__name = os.path.basename(self.__subjectDir)
self.__logDir = os.path.join(self.__subjectDir, self.__config.get('dir', 'log'))
#the subject logger must be call without file information during initialization
Logger.__init__(self)
Lock.__init__(self, self.__logDir, self.__name)
Validation.__init__(self, self.__subjectDir, self.__config)
def acquire_lock(self, sid, lock_type, tran_id):
# Find the corresponding rid given the sid.
if self.index[self.key].contains_key(sid):
rid = self.index[self.key].locate(sid)[0]
else:
print("Acquire_Lock_Error: Provided SID is not valid!!!!!!!")
return False
self.lock.acquire()
# If the record already has a lock list. Check if it contains a exclusive
# lock and check if the exclusive lock belongs to the same transaction.
if len(self.page_directory[rid]) == 3:
# Shallow copy the lock list
lock_list = self.page_directory[rid][2]
# The lock list might be empty when we release all locks.
# Doesn't mean there were no lock appended before.
if lock_list.head is not None:
if lock_list.has_exlock():
print("A:LKJF:LKAJFA")
if not lock_list.same_exlock_tranID(tran_id):
print(
"Adding lock after an exclusive lock. Lock appending failed and abort the transaction."
)
self.lock.release()
return False
else:
if not lock_list.has_lock(tran_id, lock_type):
new_lock = Lock(lock_type, tran_id)
lock_list.append_list(new_lock)
else:
new_lock = Lock(lock_type, tran_id)
lock_list.append_list(new_lock)
# If the record doesn't have a lock list, make a lock list and append the lock.
else:
self.page_directory[rid].append(Lock_List())
new_lock = Lock(lock_type, tran_id)
self.page_directory[rid][2].append_list(new_lock)
self.lock.release()
return True
def __init__(self, config):
"""A valid individual who have the capability to run tasks.
This class have the responsability to write a document of the softwares and versions
into the log directory
Must be validated as a prerequisite
Args:
config: a self.config ConfigParser object.
"""
self.__config = config
self.__subjectDir = self.__config.get('arguments', 'subjectDir')
self.__name = os.path.basename(self.__subjectDir)
self.__logDir = os.path.join(self.__subjectDir,
self.__config.get('dir', 'log'))
#the subject logger must be call without file information during initialization
Logger.__init__(self)
Lock.__init__(self, self.__logDir, self.__name)
Validation.__init__(self, self.__subjectDir, self.__config)
def deactivate(self, ns, ref, lvName, binary):
lock = Lock(ref, ns)
lock.acquire()
try:
count = RefCounter.put(ref, binary, ns)
if count > 0:
return
refreshed = False
while True:
lvInfo = self.getLVInfo(lvName)
if len(lvInfo) != 1:
raise util.SMException("LV info not found for %s" % ref)
info = lvInfo[lvName]
if info.open:
if refreshed:
# should never happen in normal conditions but in some
# failure cases the recovery code may not be able to
# determine what the correct refcount should be, so it
# is not unthinkable that the value might be out of
# sync
util.SMlog("WARNING: deactivate: LV %s open" % lvName)
return
# check again in case the cached value is stale
self.refresh()
refreshed = True
else:
break
try:
self.deactivateNoRefcount(lvName)
except util.CommandException:
self.refresh()
if self.getLVInfo(lvName):
util.SMlog("LV %s could not be deactivated" % lvName)
if lvInfo[lvName].active:
util.SMlog("Reverting the refcount change")
RefCounter.get(ref, binary, ns)
raise
else:
util.SMlog("LV %s not found" % lvName)
finally:
lock.release()
def lock(self, lockid, blocking=True, timeout=LOCK_TIMEOUT):
# with self.__locks_lock:
lock = Lock(self.client, self.lock_path_prefix + lockid)
try:
acquired = lock.acquire(blocking=blocking, timeout=timeout)
logger.debug('Lock {0} acquired: {1}'.format(lockid, acquired))
if not acquired:
raise LockFailedError(lock_id=lockid)
yield
except LockTimeout:
logger.info('Failed to acquire lock {0} due to timeout '
'({1} seconds)'.format(lockid, timeout))
raise LockFailedError(lock_id=lockid)
except LockFailedError:
raise
except Exception as e:
logger.error('Failed to acquire lock {0}: {1}\n{2}'.format(
lockid, e, traceback.format_exc()))
raise
finally:
lock.release()
def __init__(self):
self.pir = MyPiPIR(MyPiPIR.DEFAULT)
self.led = MyPiLed(MyPiLed.RED)
self.buzzer = MyPiBuzzer(MyPiBuzzer.DEFAULT)
self.locks = []
self.tries = 0
self.max_tries = 3
self.locks.append(Lock('Vault'))
self.logger = MyLogger("SecuritySystem")
self.check_interval = self.__class__.CHECK_INTERVAL
self.enabled = False
def load(self, sr_uuid):
self.ops_exclusive = OPS_EXCLUSIVE
self.lock = Lock(vhdutil.LOCK_TYPE_SR, self.uuid)
self.sr_vditype = vhdutil.VDI_TYPE_VHD
if not self.dconf.has_key('location') or not self.dconf['location']:
raise xs_errors.XenError('ConfigLocationMissing')
self.remotepath = self.dconf['location']
self.path = os.path.join(SR.MOUNT_BASE, sr_uuid)
self.linkpath = self.path
self.mountpoint = self.path
self.attached = False
self.driver_config = DRIVER_CONFIG
def load(self, sr_uuid):
self.lock = Lock(vhdutil.LOCK_TYPE_SR, self.uuid)
self.sr_vditype = SR.DEFAULT_TAP
if not self.dconf.has_key('server'):
raise xs_errors.XenError('ConfigServerMissing')
self.remoteserver = self.dconf['server']
self.path = os.path.join(SR.MOUNT_BASE, sr_uuid)
# Test for the optional 'nfsoptions' dconf attribute
self.transport = DEFAULT_TRANSPORT
if self.dconf.has_key('useUDP') and self.dconf['useUDP'] == 'true':
self.transport = "udp"
def recoverSite(self):
# reset timestamp:
self.timestamp = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
self.isRunning = True
for ID in self.variables:
self.lockTable[ID] = Lock()
# note the isReplicated() here!
for ID in self.isReady:
if not self.isReplicated(ID):
self.isReady[ID] = True
else:
self.isReady[ID] = False
def __init__(self,
woodType: str = DEFAULT_WOOD,
height: float = DEFAULT_HEIGHT,
width: float = DEFAULT_WIDTH,
lockdiameter: float = Lock.DEFAULT_DIAMETER,
state: bool = Lock.DEFAULT_STATE,
handlediameter: float = Handle.DEFAULT_DIAMETER):
self._woodType: str = woodType
self._height: float = height
self._width: float = width
self._lock: Lock = Lock(lockdiameter)
self._handle: Handle = Handle(handlediameter)
class TestLock(unittest.TestCase):
def setUp(self):
self.client = Redis()
self.client.flushdb()
self.lock = Lock(self.client, 'lock')
def test_only_one_lock_can_be_acquire(self):
self.assertTrue(
self.lock.acquire()
)
self.assertFalse(
self.lock.acquire()
)
def test_release_works(self):
self.lock.acquire()
self.assertTrue(
self.lock.release()
)
def test_release_return_false_when_lock_not_acquired(self):
self.assertFalse(
self.lock.release()
)
def main():
lock = Lock('/tmp/poll_manager.lock')
if lock.locked:
logger.error('Lock file {} exists, exiting...'.format(lock.lock_file))
return 1
else:
lock.acquire()
logger.warn('Lock file {} acquired'.format(lock.lock_file))
url = properties.PASTA_BASE_URL + '/changes/eml?'
qm = QueueManager()
fromDate = None
dt = qm.get_last_datetime()
if dt is not None:
fromDate = datetime.strftime(dt, '%Y-%m-%dT%H:%M:%S.%f')
if fromDate is None:
bootstrap(url=url)
else:
parse(url=url, fromDate=fromDate)
lock.release()
logger.warn('Lock file {} released'.format(lock.lock_file))
return 0
def lock(self, lockid, blocking=True, timeout=LOCK_TIMEOUT):
lock = Lock(self.client, self.lock_path_prefix + lockid)
try:
acquired = lock.acquire(blocking=blocking, timeout=timeout)
logger.debug('Lock {0} acquired: {1}'.format(lockid, acquired))
if not acquired:
# TODO: Change exception time or set all required parameters for
# this type of exception
raise LockAlreadyAcquiredError(lock_id=lockid)
yield
except LockTimeout:
logger.info('Failed to acquire lock {} due to timeout ({} seconds)'.format(
lockid, timeout))
raise LockFailedError(lock_id=lockid)
except LockAlreadyAcquiredError:
raise
except LockError as e:
logger.error('Failed to acquire lock {0}: {1}\n{2}'.format(
lockid, e, traceback.format_exc()))
raise
finally:
lock.release()
def activate(self, sr_uuid, vdi_uuid):
"""Activate VDI - called pre tapdisk open"""
if self._get_blocktracking_status():
if self.sr.srcmd.params.has_key('args'):
read_write = self.sr.srcmd.params['args'][0]
if read_write == "false":
# Disk is being attached in RO mode,
# don't attach metadata log file
return None
from lock import Lock
lock = Lock("cbtlog", str(vdi_uuid))
lock.acquire()
try:
logpath = self._get_cbt_logpath(vdi_uuid)
logname = self._get_cbt_logname(vdi_uuid)
# Activate CBT log file, if required
self._activate_cbt_log(logname)
finally:
lock.release()
# Check and update consistency
consistent = self._cbt_op(vdi_uuid, cbtutil.get_cbt_consistency,
logpath)
if not consistent:
alert_name = "VDI_CBT_METADATA_INCONSISTENT"
alert_str = ("Changed Block Tracking metadata is inconsistent"
" for disk %s." % vdi_uuid)
self._disable_cbt_on_error(alert_name, alert_str)
return None
self._cbt_op(self.uuid, cbtutil.set_cbt_consistency,
logpath, False)
return {'cbtlog': logpath}
return None
class LogicalView(Base):
def __init__(self, dfs):
Base.__init__(self, dfs)
self.lock_ = Lock(dfs)
self.fileList_ = {}
def beginLocalUpdate(self, fileName):
file = self.getFile(fileName)
if file.latestVersion != file.localVersion:
file.localVersion = file.latestVersion.copy()
file.ownNoChunks()
def add(self, fileName, fileSize):
self.lock_.acquire()
f = File(fileName, 1, fileSize, self.dfs_.id.str)
self.fileList_[fileName] = f
self.lock_.release()
def delete(self, fileName):
self.lock_.acquire()
self.fileList_[fileName].isDeleted = True
self.lock_.release()
def exists(self, fileName):
return (fileName in self.fileList_)
def getLocalVersion(self, fileName):
return self.fileList_[fileName].getLocalVersion()
def getLatestVersion(self, fileName):
return self.fileList_[fileName].getLatestVersion()
def setNewVersion(self, fileName, version):
self.fileList_[fileName].setNewVersion(version.copy())
def setLocalVersion(self, fileName, numEdits, fileSize, lastEdited):
self.fileList_[fileName].setLocalVersion(numEdits, fileSize, lastEdited)
def getFileList(self):
return self.fileList_.values()
def getState(self):
return self.fileList_
def getFile(self, fileName):
return self.fileList_[fileName]
def process_repositories(self, repo_configs, ref, action, request_body):
import os
import time
import logging
from wrappers import GitWrapper
from lock import Lock
import json
logger = logging.getLogger()
data = json.loads(request_body)
# Process each matching repository
for repo_config in repo_configs:
try:
# Verify that all filters matches the request (if any filters are specified)
if 'filters' in repo_config:
# at least one filter must match
for filter in repo_config['filters']:
# all options specified in the filter must match
for filter_key, filter_value in filter.iteritems():
# support for earlier version so it's non-breaking functionality
if filter_key == 'action' and filter_value == action:
continue
if filter_key not in data or filter_value != data[filter_key]:
raise FilterMatchError()
except FilterMatchError as e:
# Filter does not match, do not process this repo config
continue
# In case there is no path configured for the repository, no pull will
# be made.
if not 'path' in repo_config:
GitWrapper.deploy(repo_config)
continue
running_lock = Lock(os.path.join(repo_config['path'], 'status_running'))
waiting_lock = Lock(os.path.join(repo_config['path'], 'status_waiting'))
try:
# Attempt to obtain the status_running lock
while not running_lock.obtain():
# If we're unable, try once to obtain the status_waiting lock
if not waiting_lock.has_lock() and not waiting_lock.obtain():
logger.error("Unable to obtain the status_running lock nor the status_waiting lock. Another process is " +
"already waiting, so we'll ignore the request.")
# If we're unable to obtain the waiting lock, ignore the request
break
# Keep on attempting to obtain the status_running lock until we succeed
time.sleep(5)
n = 4
while 0 < n and 0 != GitWrapper.pull(repo_config):
n -= 1
if 0 < n:
GitWrapper.deploy(repo_config)
except Exception as e:
logger.error('Error during \'pull\' or \'deploy\' operation on path: %s' % repo_config['path'])
logger.error(e)
finally:
# Release the lock if it's ours
if running_lock.has_lock():
running_lock.release()
# Release the lock if it's ours
if waiting_lock.has_lock():
waiting_lock.release()
def setUp(self):
'''Prepare test.'''
self.__lock = Lock('./', 'andy')
def delete(self, sr_uuid, vdi_uuid, data_only=False):
"""Delete this VDI.
This operation IS idempotent and should succeed if the VDI
exists and can be deleted or if the VDI does not exist. It is
the responsibility of the higher-level management tool to
ensure that the detach() operation has been explicitly called
prior to deletion, otherwise the delete() will fail if the
disk is still attached.
"""
import blktap2
from lock import Lock
if data_only == False and self._get_blocktracking_status():
logpath = self._get_cbt_logpath(vdi_uuid)
parent_uuid = self._cbt_op(vdi_uuid, cbtutil.get_cbt_parent,
logpath)
parent_path = self._get_cbt_logpath(parent_uuid)
child_uuid = self._cbt_op(vdi_uuid, cbtutil.get_cbt_child, logpath)
child_path = self._get_cbt_logpath(child_uuid)
lock = Lock("cbtlog", str(vdi_uuid))
if self._cbt_log_exists(parent_path):
self._cbt_op(parent_uuid, cbtutil.set_cbt_child,
parent_path, child_uuid)
if self._cbt_log_exists(child_path):
self._cbt_op(child_uuid, cbtutil.set_cbt_parent,
child_path, parent_uuid)
lock.acquire()
try:
# Coalesce contents of bitmap with child's bitmap
# Check if child bitmap is currently attached
paused_for_coalesce = False
consistent = self._cbt_op(child_uuid,
cbtutil.get_cbt_consistency,
child_path)
if not consistent:
if not blktap2.VDI.tap_pause(self.session,
sr_uuid, child_uuid):
raise util.SMException("failed to pause VDI %s")
paused_for_coalesce = True
self._activate_cbt_log(self._get_cbt_logname(vdi_uuid))
self._cbt_op(child_uuid, cbtutil.coalesce_bitmap,
logpath, child_path)
lock.release()
except util.CommandException:
# If there is an exception in coalescing,
# CBT log file is not deleted and pointers are reset
# to what they were
util.SMlog("Exception in coalescing bitmaps on VDI delete,"
" restoring to previous state")
try:
if self._cbt_log_exists(parent_path):
self._cbt_op(parent_uuid, cbtutil.set_cbt_child,
parent_path, vdi_uuid)
if self._cbt_log_exists(child_path):
self._cbt_op(child_uuid, cbtutil.set_cbt_parent,
child_path, vdi_uuid)
finally:
lock.release()
lock.cleanup("cbtlog", str(vdi_uuid))
return
finally:
# Unpause tapdisk if it wasn't originally paused
if paused_for_coalesce:
blktap2.VDI.tap_unpause(self.session, sr_uuid,
child_uuid)
lock.acquire()
try:
self._delete_cbt_log()
finally:
lock.release()
lock.cleanup("cbtlog", str(vdi_uuid))
def configure_blocktracking(self, sr_uuid, vdi_uuid, enable):
"""Function for configuring blocktracking"""
import blktap2
vdi_ref = self.sr.srcmd.params['vdi_ref']
# Check if raw VDI or snapshot
if self.vdi_type == vhdutil.VDI_TYPE_RAW or \
self.session.xenapi.VDI.get_is_a_snapshot(vdi_ref):
raise xs_errors.XenError('VDIType',
opterr='Raw VDI or snapshot not permitted')
# Check if already enabled
if self._get_blocktracking_status() == enable:
return
# Save disk state before pause
disk_state = blktap2.VDI.tap_status(self.session, vdi_uuid)
if not blktap2.VDI.tap_pause(self.session, sr_uuid, vdi_uuid):
error = "Failed to pause VDI %s" % vdi_uuid
raise xs_errors.XenError('CBTActivateFailed', opterr=error)
logfile = None
try:
if enable:
try:
# Check available space
self._ensure_cbt_space()
logfile = self._create_cbt_log()
# Set consistency
if disk_state:
util.SMlog("Setting consistency of cbtlog file to False for VDI: %s"
% self.uuid)
logpath = self._get_cbt_logpath(self.uuid)
self._cbt_op(self.uuid, cbtutil.set_cbt_consistency,
logpath, False)
except Exception as error:
self._delete_cbt_log()
raise xs_errors.XenError('CBTActivateFailed',
opterr=str(error))
else:
from lock import Lock
lock = Lock("cbtlog", str(vdi_uuid))
lock.acquire()
try:
# Find parent of leaf metadata file, if any,
# and nullify its successor
logpath = self._get_cbt_logpath(self.uuid)
parent = self._cbt_op(self.uuid,
cbtutil.get_cbt_parent, logpath)
self._delete_cbt_log()
parent_path = self._get_cbt_logpath(parent)
if self._cbt_log_exists(parent_path):
self._cbt_op(parent, cbtutil.set_cbt_child,
parent_path, uuid.UUID(int=0))
except Exception as error:
raise xs_errors.XenError('CBTDeactivateFailed', str(error))
finally:
lock.release()
lock.cleanup("cbtlog", str(vdi_uuid))
finally:
blktap2.VDI.tap_unpause(self.session, sr_uuid, vdi_uuid)
