def addOrThrow(self, hdfpath, hdfstorage):
if hdfpath in self.__paths:
raise omero.LockTimeout(
None, None, "Path already in HdfList: %s" % hdfpath)
parent = path(hdfpath).parent
if not parent.exists():
raise omero.ApiUsageException(
None, None, "Parent directory does not exist: %s" % parent)
hdffile = hdfstorage.openfile("a")
fileno = hdffile.fileno()
try:
portalocker.lockno(
fileno, portalocker.LOCK_NB | portalocker.LOCK_EX)
except portalocker.LockException:
hdffile.close()
raise omero.LockTimeout(
None, None,
"Cannot acquire exclusive lock on: %s" % hdfpath, 0)
except:
hdffile.close()
raise
if fileno in self.__filenos.keys():
hdffile.close()
raise omero.LockTimeout(
None, None, "File already opened by process: %s" % hdfpath, 0)
else:
self.__filenos[fileno] = hdfstorage
self.__paths[hdfpath] = hdfstorage
return hdffile
def loop(self, loops, ms):
"""
Calls block(long) "loops" number of times with the "ms"
argument. This means the total wait time for the delete to occur
is: loops X ms. Sensible values might be 10 loops for 500 ms, or
5 seconds.
@param loops Number of times to call block(long)
@param ms Number of milliseconds to pass to block(long
@throws omero.LockTimeout if block(long) does not return
a non-null value after loops calls.
"""
count = 0
found = False
while count < loops:
count += 1
found = self.block(ms)
if found:
break
if found:
return self.getResponse()
else:
waited = (old_div(ms, 1000.0)) * loops
raise omero.LockTimeout(
None, None, "Command unfinished after %s seconds" % waited,
5000, int(waited))
def addOrThrow(self, hdfpath, hdfstorage):
if hdfpath in self.__locks:
raise omero.LockTimeout(None, None, "Path already in HdfList: %s" % hdfpath)
parent = path(hdfpath).parent
if not parent.exists():
raise omero.ApiUsageException(None, None, "Parent directory does not exist: %s" % parent)
lock = None
try:
lock = open(hdfpath, "a+")
portalocker.lock(lock, portalocker.LOCK_NB|portalocker.LOCK_EX)
self.__locks[hdfpath] = lock
except portalocker.LockException, le:
if lock:
lock.close()
raise omero.LockTimeout(None, None, "Cannot acquire exclusive lock on: %s" % hdfpath, 0)
except portalocker.LockException, le:
if lock:
lock.close()
raise omero.LockTimeout(
None, None, "Cannot acquire exclusive lock on: %s" % hdfpath,
0)
except:
if lock:
lock.close()
raise
hdffile = hdfstorage.openfile("a")
fileno = hdffile.fileno()
if fileno in self.__filenos.keys():
hdffile.close()
raise omero.LockTimeout(
None, None, "File already opened by process: %s" % hdfpath, 0)
else:
self.__filenos[fileno] = hdfstorage
self.__paths[hdfpath] = hdfstorage
return hdffile
@locked
def getOrCreate(self, hdfpath):
try:
return self.__paths[hdfpath]
except KeyError:
return HdfStorage(hdfpath, self._lock) # Adds itself.
@locked
def remove(self, hdfpath, hdffile):