def acquire_domain_object_lock(lock_domain, object_path_hash):
"""Try to get a lock on the object in the domain that manages locks for the
object.
Returns:
(bool success, lock)
success: Indicates whether we won the bid to write the object.
lock: boto Lock object we either found for this object or that we created.
"""
# Get a valid new lock name
lock_id = _lock_name(object_path_hash)
# Check if we already have a lock for the object.
query = _select_object_locks_query(lock_domain.name, object_path_hash)
matching_locks = lock_domain.select(query, consistent_read=True)
try:
_ = matching_locks.next()
# Found a lock for the same object.
return False, _
except StopIteration:
# Did not find any locks.
logging.info('Success! No matching lock for the object %s.' % object_path_hash)
pass
# Set attributes for a new, unconfirmed lock.
unconfirmed_lock = lock_domain.new_item(unicode(lock_id))
unconfirmed_lock[unicode('lock_name')] = unicode(lock_id)
unconfirmed_lock[unicode('user')] = unicode('tierney')
unconfirmed_lock[unicode('epoch_time')] = unicode(epoch_time())
while True:
try:
unconfirmed_lock.save()
break
except boto.exception.SDBResponseError:
logging.warning('Domain does not exist.')
# Check if another lock was taken at this time. If so, we release our lock.
query = _select_object_locks_query(lock_domain.name, object_path_hash)
matching_locks = lock_domain.select(query, consistent_read=True)
for _lock in matching_locks:
# Finding a matching lock verifies that we can read the lock that we wrote.
if _lock == unconfirmed_lock:
continue
# Check if we should ignore the lock due to a timeout.
if (epoch_time() - float(_lock.epoch_time) > _TIMEOUT_SECONDS):
logging.info('Encountered (and ignoring) an old lock: %s.' % _lock)
continue
# Concede. Delete our lock and return failure.
logging.info('Found a conflicting lock so we must release.\n' \
' found lock: %s.\n' \
' unconfirmed lock: %s.' %
(_lock, unconfirmed_lock))
# Another lock found. Need to release ours.
lock_domain.delete_item(unconfirmed_lock)
return False, _lock
# Return success and the lock (we have confirmed it at this point though).
return True, unconfirmed_lock
def exec(self):
if self.is_windows:
# TODO: Call scripts one after another
terminal_cmd = """matlab -nodesktop -nosplash -r " """
q_cmd = """ cd('{}'),disp(pwd),input('press any key to run...','s'),{},"""
# The for loop should be made, now it is wrong, the code after is OK
for script_file in self.script_files:
# Note that .m should be removed from the filename to run
terminal_cmd += q_cmd.format(
os.path.dirname(script_file),
os.path.basename(script_file[:-2]))
self.log_trigger.emit("Exec: {}".format(
os.path.relpath(script_file, self._root)))
terminal_cmd.rstrip(',') # remove trailing ,
terminal_cmd += "\""
t = epoch_time()
p = Popen(shlex.split(terminal_cmd))
# In some computers p.wait() p.terminate() does not do anything
# in other systems, it blocks the program.
#p.wait()
#p.terminate() # Note that this does not close MATLAB
# Use psutil to retrieve all the processes with MATLAB
matlab_proc = list(
filter(lambda p: "matlab" in p.name().lower(),
psutil.process_iter()))
# Sometimes more than one matlab process exist
if len(matlab_proc) > 1:
diff_time = [abs(p.create_time() - t) for p in matlab_proc]
# Find the process created almost the same time as t,
# Hopefully this is correct always
ind_min = min(enumerate(diff_time), key=itemgetter(1))[0]
self._processes.append(matlab_proc[ind_min])
elif len(matlab_proc) > 0: # In fact should be 1
self._processes.append(matlab_proc[0])
elif self.is_linux: # Here the scripts should be run
terminal_cmd = "gnome-terminal --disable-factory "
tab_cmd = "--tab --working-directory='{}' -e " + \
"""'bash -c "matlab -nodesktop -nosplash -r "{}";""" + \
"""exec bash" ' """
cmd = terminal_cmd
for script_file in self.script_files: # script_file is absolute path
# Note that .m should be removed from the command of matlab
matlab_cmd = script_file[:-2]
cmd += tab_cmd.format(os.path.dirname(script_file),
os.path.basename(matlab_cmd))
rel_script_path = os.path.relpath(script_file, self._root)
self.log_trigger.emit("Exec: {}".format(rel_script_path))
p = Popen(shlex.split(cmd), shell=False, start_new_session=True)
self._processes.append(p)
def importICalendarFile(
fullpath,
view,
targetCollection=None,
filterAttributes=None,
activity=None,
tzinfo=None,
logger=None,
selectedCollection=False,
):
"""Import ics file at fullpath into targetCollection.
If selectedCollection is True, ignored targetCollection and import into
the currently selected sidebar collection.
If Trash is chosen as the target collection, a new collection will be
created instead.
"""
from osaf.framework.blocks.Block import Block
import translator, ics
from osaf import sharing
if selectedCollection:
targetCollection = Block.findBlockByName("MainView").getSidebarSelectedCollection()
trash = schema.ns("osaf.pim", view).trashCollection
if targetCollection == trash:
targetCollection = None
view.commit(sharing.mergeFunction) # to make target collection available
# Note: if everyone is following the commit rules that says a commit
# happens after every user action, this commit is not required.
rv = sharing.getView(view.repository)
if targetCollection is not None:
targetCollection = rv.findUUID(targetCollection.itsUUID)
if not os.path.isfile(fullpath):
raise ICalendarImportError(_(u"File does not exist, import cancelled."))
before = epoch_time()
(dir, filename) = os.path.split(fullpath)
try:
# TODO: coerceTzinfo?
import stateless
try:
collection = stateless.importFile(
rv, fullpath, collection=targetCollection, filters=filterAttributes, activity=activity
)
except:
if logger:
logger.exception("Failed importFile %s" % fullpath)
raise ICalendarImportError(_(u"Problem with the file, import cancelled."))
if targetCollection is None:
collectionName = getattr(collection, "displayName", "Untitled")
if collectionName == "Untitled":
name = "".join(filename.split(".")[0:-1]) or filename
collection.displayName = name
rv.commit(sharing.mergeFunction) # makes new collection available
view.refresh(sharing.mergeFunction) # main ui repo view
finally:
sharing.releaseView(rv)
collection = view.findUUID(collection.itsUUID)
if targetCollection is None:
schema.ns("osaf.app", view).sidebarCollection.add(collection)
sideBarBlock = Block.findBlockByName("Sidebar")
sideBarBlock.postEventByName("SelectItemsBroadcast", {"items": [collection]})
if logger:
logger.info("Imported collection in %s seconds" % (epoch_time() - before))
return collection
sleep,
time as epoch_time,
localtime,
gmtime,
tzname,
asctime,
strftime,
)
# Sleep for 500 ms.
sleep( 0.5 )
# Number of seconds since midnight on 1 Jan 1970.
# Can use as a random number generator seed.
# Combine with 'os.getpid' for a more unique seed.
print( epoch_time( ) )
# Local Timezone (if computer is configured correctly)
print( tzname )
# Local Time
print( localtime( ) )
# Time on the Greenwich Meridian
print( gmtime( ) )
# Local time as a string.
print( asctime( ) )
# GMT as a string.
print( asctime( gmtime( ) ) )
# Just the current year as a string.
print( strftime( "%Y", gmtime( ) ) )
def importICalendarFile(fullpath, view, targetCollection = None,
filterAttributes = None, activity=None,
tzinfo = None, logger=None, selectedCollection = False):
"""Import ics file at fullpath into targetCollection.
If selectedCollection is True, ignored targetCollection and import into
the currently selected sidebar collection.
If Trash is chosen as the target collection, a new collection will be
created instead.
"""
from osaf.framework.blocks.Block import Block
import translator, ics
from osaf import sharing
if selectedCollection:
targetCollection = Block.findBlockByName("MainView").getSidebarSelectedCollection()
trash = schema.ns("osaf.pim", view).trashCollection
if targetCollection == trash:
targetCollection = None
view.commit(sharing.mergeFunction) # to make target collection available
# Note: if everyone is following the commit rules that says a commit
# happens after every user action, this commit is not required.
rv = sharing.getView(view.repository)
if targetCollection is not None:
targetCollection = rv.findUUID(targetCollection.itsUUID)
if not os.path.isfile(fullpath):
raise ICalendarImportError(_(u"File does not exist, import cancelled."))
before = epoch_time()
(dir, filename) = os.path.split(fullpath)
try:
# TODO: coerceTzinfo?
import stateless
try:
collection = stateless.importFile(rv , fullpath,
collection=targetCollection, filters=filterAttributes,
activity=activity)
except:
if logger:
logger.exception("Failed importFile %s" % fullpath)
raise ICalendarImportError(_(u"Problem with the file, import cancelled."))
if targetCollection is None:
collectionName = getattr(collection, 'displayName', 'Untitled')
if collectionName == 'Untitled':
name = "".join(filename.split('.')[0:-1]) or filename
collection.displayName = name
rv.commit(sharing.mergeFunction) # makes new collection available
view.refresh(sharing.mergeFunction) # main ui repo view
finally:
sharing.releaseView(rv)
collection = view.findUUID(collection.itsUUID)
if targetCollection is None:
schema.ns("osaf.app", view).sidebarCollection.add(collection)
sideBarBlock = Block.findBlockByName('Sidebar')
sideBarBlock.postEventByName ("SelectItemsBroadcast",
{'items':[collection]})
if logger:
logger.info("Imported collection in %s seconds" % (epoch_time()-before))
return collection
