class LockPrompt(Plugin):
# Filename where the application lock is stored.
filename = Path(default="%(checkbox_data)s/lock")
# Timeout after which to show an error prompt.
timeout = Int(default=0)
logger = logging.getLogger()
def register(self, manager):
super(LockPrompt, self).register(manager)
self._lock = None
self._fd = None
self._manager.reactor.call_on(
"prompt-begin", self.prompt_begin, -1000)
self._manager.reactor.call_on("stop", self.release, 1000)
def prompt_begin(self, interface):
directory = posixpath.dirname(self.filename)
safe_make_directory(directory)
# Try to lock the process
self._lock = GlobalLock(self.filename, logger=self.logger)
try:
self._lock.acquire()
except LockAlreadyAcquired:
if time() - os.stat(self.filename).st_atime > self.timeout:
self._manager.reactor.fire("prompt-error", interface,
_("There is another checkbox running. Please close it first."))
self._manager.reactor.stop_all()
# Stop the process if the lock is deleted
def handler(signum, frame):
if not posixpath.exists(self.filename):
self._manager.reactor.stop_all()
signal.signal(signal.SIGIO, handler)
self._fd = os.open(directory, os.O_RDONLY)
fcntl.fcntl(self._fd, fcntl.F_SETSIG, 0)
fcntl.fcntl(self._fd, fcntl.F_NOTIFY, fcntl.DN_DELETE|fcntl.DN_MULTISHOT)
def release(self):
# Properly release to the lock
self._lock.release(skip_delete=True)
os.close(self._fd)
os.unlink(self.filename)
class LockPrompt(Plugin):
# Filename where the application lock is stored.
filename = Path(default="%(checkbox_data)s/lock")
# Timeout after which to show an error prompt.
timeout = Int(default=0)
logger = logging.getLogger()
def register(self, manager):
super(LockPrompt, self).register(manager)
self._lock = None
self._fd = None
self._manager.reactor.call_on("prompt-begin", self.prompt_begin, -1000)
self._manager.reactor.call_on("stop", self.release, 1000)
def prompt_begin(self, interface):
directory = posixpath.dirname(self.filename)
safe_make_directory(directory)
# Try to lock the process
self._lock = GlobalLock(self.filename, logger=self.logger)
try:
self._lock.acquire()
except LockAlreadyAcquired:
if time() - os.stat(self.filename).st_atime > self.timeout:
self._manager.reactor.fire(
"prompt-error", interface, _("There is another checkbox running. Please close it first.")
)
self._manager.reactor.stop_all()
# Stop the process if the lock is deleted
def handler(signum, frame):
if not posixpath.exists(self.filename):
self._manager.reactor.stop_all()
signal.signal(signal.SIGIO, handler)
self._fd = os.open(directory, os.O_RDONLY)
fcntl.fcntl(self._fd, fcntl.F_SETSIG, 0)
fcntl.fcntl(self._fd, fcntl.F_NOTIFY, fcntl.DN_DELETE | fcntl.DN_MULTISHOT)
def release(self):
# Properly release to the lock
self._lock.release(skip_delete=True)
os.close(self._fd)
os.unlink(self.filename)
def prompt_begin(self, interface):
directory = posixpath.dirname(self.filename)
safe_make_directory(directory)
# Try to lock the process
self._lock = GlobalLock(self.filename, logger=self.logger)
try:
self._lock.acquire()
except LockAlreadyAcquired:
if time() - os.stat(self.filename).st_atime > self.timeout:
self._manager.reactor.fire(
"prompt-error", interface, _("There is another checkbox running. Please close it first.")
)
self._manager.reactor.stop_all()
# Stop the process if the lock is deleted
def handler(signum, frame):
if not posixpath.exists(self.filename):
self._manager.reactor.stop_all()
signal.signal(signal.SIGIO, handler)
self._fd = os.open(directory, os.O_RDONLY)
fcntl.fcntl(self._fd, fcntl.F_SETSIG, 0)
fcntl.fcntl(self._fd, fcntl.F_NOTIFY, fcntl.DN_DELETE | fcntl.DN_MULTISHOT)
def prompt_begin(self, interface):
directory = posixpath.dirname(self.filename)
safe_make_directory(directory)
self._lock = GlobalLock(self.filename)
try:
self._lock.acquire()
except LockAlreadyAcquired:
self._manager.reactor.fire("prompt-error", interface,
_("Another checkbox is running"),
_("There is another checkbox running. Please close it first."))
self._manager.reactor.stop_all()
class LockPrompt(Plugin):
# Filename where the application lock is stored.
filename = Path(default="%(checkbox_data)s/lock")
def register(self, manager):
super(LockPrompt, self).register(manager)
self._lock = None
self._manager.reactor.call_on("prompt-begin", self.prompt_begin)
def prompt_begin(self, interface):
directory = posixpath.dirname(self.filename)
safe_make_directory(directory)
self._lock = GlobalLock(self.filename)
try:
self._lock.acquire()
except LockAlreadyAcquired:
self._manager.reactor.fire("prompt-error", interface,
_("Another checkbox is running"),
_("There is another checkbox running. Please close it first."))
self._manager.reactor.stop_all()
def prompt_begin(self, interface):
directory = posixpath.dirname(self.filename)
safe_make_directory(directory)
# Try to lock the process
self._lock = GlobalLock(self.filename, logger=self.logger)
try:
self._lock.acquire()
except LockAlreadyAcquired:
if time() - os.stat(self.filename).st_atime > self.timeout:
self._manager.reactor.fire("prompt-error", interface,
_("There is another checkbox running. Please close it first."))
self._manager.reactor.stop_all()
# Stop the process if the lock is deleted
def handler(signum, frame):
if not posixpath.exists(self.filename):
self._manager.reactor.stop_all()
signal.signal(signal.SIGIO, handler)
self._fd = os.open(directory, os.O_RDONLY)
fcntl.fcntl(self._fd, fcntl.F_SETSIG, 0)
fcntl.fcntl(self._fd, fcntl.F_NOTIFY, fcntl.DN_DELETE|fcntl.DN_MULTISHOT)