def process(self):
"""@return L{IKittProcess} provider"""
#work around constructor and allow a process to appear to die
if not hasattr(self, '_process'):
#adapt this model to a IKittProcess
self._process = IKittProcess(self)
elif self._process.pid != self.pid or not self._process.running:
if config.HOSTNAME == self.server.hostname:
AppProcess.delete(
self) #take ourself out of serialization loop
self._process = IKittNullProcess(
self) #continue to work for any other refs
return self._process
def process(self):
"""The process object contained by this application instance
@raise InvalidProcess
@return (instance of AppProcess)
"""
if not hasattr(self, '_process'):
#try to grab a live process, on exception grab a NullProcess
try:
assert self.pid #save the scan attempt
self._process = IDroneModelAppProcess(self)
except:
self._process = IKittNullProcess(
self) #should be a NullProcess
elif IDroneModelAppProcess.providedBy(self._process) and not \
AppProcess.isValid(self._process):
self._process = IKittNullProcess(self)
#keep the journal up to date
self.info.update({
'pid': self._process.pid,
'inode': self._process.inode,
})
return self._process
def children(self):
"""emits a generator of our child process objects
this is only really useful for scab detection
this only works if the child pid has been contained
in another AppProcess Instance. Of course it could
also be useful in bizarre situations with apps that
have a parent supervisor and child worker.
"""
for process in AppProcess.objects:
if IKittNullProcess.providedBy(process.process): continue
if not self.pid: break
if process == self: continue
if process.server.hostname != self.server.hostname: continue
if process.ppid == self.pid and AppProcess.isValid(process):
yield process
def children(self):
"""emits a generator of our child process objects
this is only really useful for scab detection
this only works if the child pid has been contained
in another AppProcess Instance. Of course it could
also be useful in bizarre situations with apps that
have a parent supervisor and child worker.
"""
for process in AppProcess.objects:
if IKittNullProcess.providedBy(process.process): continue
if not self.pid: break
if process == self: continue
if process.server.hostname != self.server.hostname: continue
if process.ppid == self.pid and AppProcess.isValid(process):
yield process
def __init__(self, server, pid):
self._pid = pid
self.server = IDroneModelServer(server)
self._created = time.time()
#don't set self._process
try:
try: #re-constructing, can cause problems with this
if IKittNullProcess.providedBy(self.process.process):
raise InvalidProcess("Invalid PID (%s)" % pid)
except AttributeError:
if isinstance(self.process, NullProcess):
raise InvalidProcess("Invalid PID (%s)" % pid)
raise #re-raise do avoid ending up in a pickle, literally
except InvalidProcess:
AppProcess.delete(self) #make sure we are invalid
raise InvalidProcess("Invalid PID (%s)" % pid)
except IOError: #linux and solaris kitt.proc.LiveProcess use files
AppProcess.delete(self) #make sure we are invalid
raise InvalidProcess("Invalid PID (%s)" % pid)
except:
err('wtf happened here .. seriously i do not know!!!')
AppProcess.delete(self) #make sure we are invalid
raise
def __init__(self, server, pid):
self._pid = pid
self.server = IDroneModelServer(server)
self._created = time.time()
#don't set self._process
try:
try: #re-constructing, can cause problems with this
if IKittNullProcess.providedBy(self.process.process):
raise InvalidProcess("Invalid PID (%s)" % pid)
except AttributeError:
if isinstance(self.process, NullProcess):
raise InvalidProcess("Invalid PID (%s)" % pid)
raise #re-raise do avoid ending up in a pickle, literally
except InvalidProcess:
if config.HOSTNAME == self.server.hostname:
AppProcess.delete(self) #make sure we are invalid
raise InvalidProcess("Invalid PID (%s)" % pid)
except IOError: #linux and solaris kitt.proc.LiveProcess use files
AppProcess.delete(self) #make sure we are invalid
raise InvalidProcess("Invalid PID (%s)" % pid)
except:
err('wtf happened here .. seriously i do not know!!!')
AppProcess.delete(self) #make sure we are invalid
raise
