def get_ready_event(self):
"""
By default, it is always ready.
Override this in your specific process.
"""
ev = Event()
ev.set()
return ev
def get_ready_event(self):
"""
By default, it is always ready.
Override this in your specific process.
"""
ev = Event()
ev.set()
return ev
class PyonThread(object):
"""
Thread-like base class for doing work in the container, based on gevent's greenlets.
"""
def __init__(self, target=None, *args, **kwargs):
"""
@param target The Callable to start as independent thread
@param args Provided as spawn args to thread
@param kwargs Provided as spawn kwargs to thread
"""
super(PyonThread, self).__init__()
if target is not None or not hasattr(
self, 'target'): # Allow setting target at class level
self.target = target
self.spawn_args = args
self.spawn_kwargs = kwargs
# The instance of Greenlet or subprocess or similar
self.proc = None
self.supervisor = None
self.ev_exit = Event() # Event that is set when greenlet exits
def _pid(self):
""" And internal, non global thread identifier.
"""
return id(self.proc)
def _spawn(self):
""" Spawn a gevent greenlet using defined target method and args.
"""
gl = spawn(self.target, *self.spawn_args, **self.spawn_kwargs)
gl.link(
lambda _: self.ev_exit.set()) # Set exit event when we terminate
gl._glname = "ION Thread %s" % str(self.target)
return gl
def _join(self, timeout=None):
return self.proc.join(timeout)
def _stop(self):
return self.proc.kill()
def _running(self):
return self.proc.started
def _notify_stop(self):
pass
@property
def pid(self):
""" Return the internal process ID for the spawned thread. If not spawned yet, return 0. """
if self.proc is None:
return 0
return self._pid()
@property
def running(self):
""" Is the thread actually running? """
return bool(self.proc and self._running())
def start(self):
self.proc = self._spawn()
self.proc._glname = ""
return self
def notify_stop(self):
""" Get ready, you're about to get shutdown. """
self._notify_stop()
def stop(self):
if self.running:
self._stop()
if self.supervisor is not None:
self.supervisor.child_stopped(self)
return self
def join(self, timeout=None):
if self.proc is not None and self.running:
self._join(timeout)
self.stop()
return self
def get(self):
"""
Returns the value (or raises the exception) of the wrapped thread.
If not running yet, returns None.
"""
if self.proc is not None:
return self.proc.get()
return None
def get_ready_event(self):
"""
By default, it is always ready.
Override this in your specific process.
"""
ev = Event()
ev.set()
return ev
class PyonThread(object):
"""
@brief Threadlike base class for doing work in the container.
Wraps gevent's greenlet class.
"""
def __init__(self, target=None, *args, **kwargs):
"""
@param target The Callable to start as independent thread
@param args Provided as spawn args to thread
@param kwargs Provided as spawn kwargs to thread
"""
super(PyonThread, self).__init__()
if target is not None or not hasattr(self, 'target'): # Allow setting target at class level
self.target = target
self.spawn_args = args
self.spawn_kwargs = kwargs
# The instance of Greenlet or subprocess or similar
self.proc = None
self.supervisor = None
self.ev_exit = Event()
def _pid(self):
return id(self.proc)
def _spawn(self):
# Gevent spawn
gl = spawn(self.target, *self.spawn_args, **self.spawn_kwargs)
gl.link(lambda _: self.ev_exit.set())
gl._glname = "ION Thread %s" % str(self.target)
return gl
def _join(self, timeout=None):
return self.proc.join(timeout)
def _stop(self):
return self.proc.kill()
def _running(self):
return self.proc.started
def _notify_stop(self):
pass
@property
def pid(self):
""" Return the process ID for the spawned thread. If not spawned yet, return 0. """
if self.proc is None:
return 0
return self._pid()
@property
def running(self):
""" Is the thread actually running? """
return bool(self.proc and self._running())
def start(self):
self.proc = self._spawn()
self.proc._glname = "Container process supervisor"
return self
def notify_stop(self):
""" Get ready, you're about to get shutdown. """
self._notify_stop()
def stop(self):
if self.running:
self._stop()
if self.supervisor is not None:
self.supervisor.child_stopped(self)
return self
def join(self, timeout=None):
if self.proc is not None and self.running:
self._join(timeout)
self.stop()
return self
def get(self):
"""
Returns the value (or raises the exception) of the wrapped thread.
If not running yet, returns None.
"""
if self.proc is not None:
return self.proc.get()
return None
def get_ready_event(self):
"""
By default, it is always ready.
Override this in your specific process.
"""
ev = Event()
ev.set()
return ev
