def __init__(self):
self.__group = None
self._value = None
self._old_value = None
self._last_update = 0
self.__cv = Condition()
super(LightPoint, self).__init__()
EventProducerMixin.__init__(self)
def __init__(self):
CompositeNode.__init__(self)
EventProducerMixin.__init__(self)
self._schedule_lock = Lock()
self._schedule_condition = Condition()
self._value_lock = Lock()
self._value_condition = Condition()
self.__schedule = None
self.__value = None
def __init__(self):
CompositeNode.__init__(self)
EventProducerMixin.__init__(self)
self._schedule_lock = Lock()
self._schedule_condition = Condition()
self._value_lock = Lock()
self._value_condition = Condition()
self.__schedule = None
self.__value = None
def __init__(self, timeout=2.0):
self.timeout = timeout
self.stations = {}
self._monitor = monitor.ChannelMonitor(self.timeout)
self.tm_number = self.tm_counter.increment()
self._response_tp = ThreadPool(1, 'Jace Response Pool')
self._pending_responses = Queue()
self._callbacks = {}
self._running = False
self._sync_get_lock = Lock()
self._last_sync_get = uptime.secs()
self._cv = Condition()
ImmortalThread.__init__(self, None, None,
'Jace Transaction Manager')
return
def test_cross_thread(self):
# @note: This test is relying on the write being large enough to
# fill all the OS buffers and block.
#
# @note: Methinks this test relies on too many side effects...
too_big_for_one_write = 1000000
some_of_but_not_all_of_it = 65536
stream = CrossThreadStream()
cv = Condition()
t1 = Thread(target=_writer, args=(cv,stream,too_big_for_one_write))
cv.acquire()
t1.start()
# @note: This pause should cause the _writer to block since it is
# trying to write too_big_for_one_write.
pause(2)
data = stream.read(some_of_but_not_all_of_it)
count = len(data)
self.failUnless(data == 'c'*count and
count <= some_of_but_not_all_of_it, 'First read ' +
'failed to return the correct data or returned ' +
'too much data')
while count < too_big_for_one_write:
data += stream.read(too_big_for_one_write - count)
count = len(data)
self.failUnless(data == 'c'*too_big_for_one_write,
'Overall stream did not return ' +
'data written to it correctly or the wrong number')
self.failUnless(stream.read(100) == '', 'Read did not return empty ' +
'string even though no more data should have been ' +
'waiting and the stream closed')
cv.wait()
try:
self.failIf(_failed, _reason)
finally:
cv.release()
def __init__(self, source_node, timeout=960):
EventConsumerAbstract.__init__(self)
self.__node = as_internal_node(source_node)
self.__cond = Condition()
self.__event = None
self.__sched = None #scheduled action to unsubscribe the point
self.__timeout = timeout #number of seconds to maintain subscription
self._event_received = False
return
def __init__(self, timeout=2.0):
self.timeout = timeout
self.stations = {}
self._monitor = monitor.ChannelMonitor(self.timeout)
self.tm_number = self.tm_counter.increment()
self._response_tp = ThreadPool(1, 'Jace Response Pool')
self._pending_responses = Queue()
self._callbacks = {}
self._running = False
self._sync_get_lock = Lock()
self._last_sync_get = uptime.secs()
self._cv = Condition()
ImmortalThread.__init__(self, None, None, 'Jace Transaction Manager')
return
def test_cross_thread(self):
# @note: This test is relying on the write being large enough to
# fill all the OS buffers and block.
#
# @note: Methinks this test relies on too many side effects...
too_big_for_one_write = 1000000
some_of_but_not_all_of_it = 65536
stream = CrossThreadStream()
cv = Condition()
t1 = Thread(target=_writer, args=(cv, stream, too_big_for_one_write))
cv.acquire()
t1.start()
# @note: This pause should cause the _writer to block since it is
# trying to write too_big_for_one_write.
pause(2)
data = stream.read(some_of_but_not_all_of_it)
count = len(data)
self.failUnless(
data == 'c' * count and count <= some_of_but_not_all_of_it,
'First read ' + 'failed to return the correct data or returned ' +
'too much data')
while count < too_big_for_one_write:
data += stream.read(too_big_for_one_write - count)
count = len(data)
self.failUnless(
data == 'c' * too_big_for_one_write,
'Overall stream did not return ' +
'data written to it correctly or the wrong number')
self.failUnless(
stream.read(100) == '', 'Read did not return empty ' +
'string even though no more data should have been ' +
'waiting and the stream closed')
cv.wait()
try:
self.failIf(_failed, _reason)
finally:
cv.release()
class _CriticalData:
def __init__(self):
self._lock = Lock()
self._cond = Condition(self._lock)
self.state = ConnectionMixin.IDLE
self.connection_count = 0
def acquire(self):
return self._lock.acquire()
def release(self):
return self._lock.release()
def wait(self, timeout=None):
if timeout != None:
self._cond.wait(timeout)
else:
self._cond.wait()
def notify(self):
self._cond.notify()
def increment_connection_count(self):
self.connection_count += 1
self.state = ConnectionMixin.UP
return self.connection_count
def decrement_connection_count(self):
self.connection_count -= 1
if self.connection_count < 1:
self.state = ConnectionMixin.DOWN
def get_state(self):
return self.state
def set_state(self, state):
self.state = state
class _CriticalData:
def __init__(self):
self._lock = Lock()
self._cond = Condition(self._lock)
self.state = ConnectionMixin.IDLE
self.connection_count = 0
def acquire(self):
return self._lock.acquire()
def release(self):
return self._lock.release()
def wait(self, timeout=None):
if timeout != None:
self._cond.wait(timeout)
else:
self._cond.wait()
def notify(self):
self._cond.notify()
def increment_connection_count(self):
self.connection_count += 1
self.state = ConnectionMixin.UP
return self.connection_count
def decrement_connection_count(self):
self.connection_count -= 1
if self.connection_count <1 :
self.state = ConnectionMixin.DOWN
def get_state(self):
return self.state
def set_state(self,state):
self.state = state
class Schedule(CompositeNode, EventProducerMixin):
def __init__(self):
CompositeNode.__init__(self)
EventProducerMixin.__init__(self)
self._schedule_lock = Lock()
self._schedule_condition = Condition()
self._value_lock = Lock()
self._value_condition = Condition()
self.__schedule = None
self.__value = None
def configure(self, config):
CompositeNode.configure(self, config)
def configuration(self):
config = CompositeNode.configuration(self)
return config
def start(self):
CompositeNode.start(self)
def stop(self):
CompositeNode.stop(self)
def set_schedule(self, client, schedule):
self._schedule_lock.acquire()
self._schedule_condition.acquire()
try:
self.__schedule = schedule
self._schedule_condition.notifyAll()
finally:
self._schedule_lock.release()
self._schedule_condition.release()
self.event_generate(ScheduleChangedEvent(client, schedule))
def get_schedule(self):
self._schedule_lock.acquire()
try:
schedule = self.__schedule
finally:
self._schedule_lock.release()
if isinstance(schedule, Exception):
raise schedule
return schedule
##
# @param schedule Schedule client believes to be current.
def get_next_schedule(self, schedule, timeout=None):
self._schedule_lock.acquire()
try:
if schedule is not self.__schedule:
return self.__schedule
self._schedule_condition.acquire()
finally:
self._schedule_lock.release()
try:
self._schedule_condition.wait(timeout)
schedule = self.__schedule
finally:
self._schedule_condition.release()
if isinstance(schedule, Exception):
raise schedule
return schedule
def is_schedule_current(self, schedule):
self._schedule_lock.acquire()
try:
changed = not schedule is self.__schedule
finally:
self._schedule_lock.release()
return changed
def _set(self, value):
self._value_lock.acquire()
self._value_condition.acquire()
try:
old = self.__value
self.__value = value
self._value_condition.notifyAll()
finally:
self._value_lock.release()
self._value_condition.release()
if old != value:
self.event_generate(ChangeOfValueEvent(self, old, value))
def get(self, skipCache=0):
self._value_lock.acquire()
try:
value = self.__value
finally:
self._value_lock.release()
return value
def get_next_value(self, value, timeout=None):
self._value_lock.acquire()
try:
if value != self.__value:
return self.__value
self._value_condition.acquire()
finally:
self._value_lock.release()
try:
self._value_condition.wait(timeout)
value = self.__value
finally:
self._value_condition.release()
return value
def is_value_current(self, value):
self._value_lock.acquire()
try:
changed = not value == self.__value
finally:
self._value_lock.release()
return changed
class __impl(ImmortalThread):
tm_counter = Counter(0)
def __init__(self, timeout=2.0):
self.timeout = timeout
self.stations = {}
self._monitor = monitor.ChannelMonitor(self.timeout)
self.tm_number = self.tm_counter.increment()
self._response_tp = ThreadPool(1, 'Jace Response Pool')
self._pending_responses = Queue()
self._callbacks = {}
self._running = False
self._sync_get_lock = Lock()
self._last_sync_get = uptime.secs()
self._cv = Condition()
ImmortalThread.__init__(self, None, None, 'Jace Transaction Manager')
return
def start(self):
if not self._monitor.is_running():
self._monitor.start_monitor()
self._running = True
self._synchronous_transaction = Transaction(self, None, self._bump_cv)
self._synchronous_transaction.set_timeout(self.timeout)
ImmortalThread.start(self)
return
def stop(self):
msglog.log('Jace', INFO, 'Stop Jace Prism Transaction Manger')
if self._monitor.is_running():
self._monitor.stop_monitor()
self._running = False
return
def run(self):
msglog.log('Jace', INFO, 'Starting Jace Prism Transaction Manger.')
while self._running:
try:
self.send_loop()
self.response_loop()
except:
msglog.log('Jace', WARN, 'Jace Transaction Manager - error sending next.')
msglog.exception()
return
def transaction_completion_handler(self, transaction):
self.tm_number = self.tm_counter.increment()
try:
tid = transaction.tid
s_id, callback = self._callbacks.get(tid)
if callback:
del self._callbacks[tid]
self._pending_responses.put((callback, transaction.get_response()))
except:
msglog.exception()
# recycle the transaction for reuse within the queue
self.stations.get(s_id).put_transaction(transaction)
return
def add_station(self, station):
s_id = station.get_id()
self.stations[s_id] = station
return
def get_synchronous(self, station, rqst):
self._sync_get_lock.acquire()
try:
t = self._synchronous_transaction
hdr = self._get_auth_header(station)
hdr['Connection'] = 'close'
t.build_request(rqst.url, None, hdr)
self._cv.acquire()
try:
response = ETimeout()
try:
t.send_request()
self._cv.wait(self.timeout)
self._last_sync_get = uptime.secs()
if t.is_expired():
t.cancel()
else:
response = t.get_response()
except:
t.cancel()
finally:
self._cv.release()
return response
finally:
self._sync_get_lock.release()
return
def _bump_cv(self, transaction):
# transaction isn't used
self._cv.acquire()
self._cv.notify()
self._cv.release()
return
def send_loop(self):
for s_id, station in self.stations.items():
for i in range(station.transaction_limit):
try:
t, rqst = station.get_next()
except Empty:
break
hdr = self._get_auth_header(station)
hdr['Connection'] = 'close'
t.build_request(rqst.url, None, hdr)
self._callbacks[t.tid] = (s_id, rqst.callback)
t.send_request()
return
def response_loop(self):
while 1:
try:
callback, rsp = self._pending_responses.get(False)
callback(rsp)
except Empty:
return
except:
msglog.log('Jace', WARN, 'Unexpected error in response_loop')
msglog.exception()
return
def _get_auth_header(self, station):
return {"Authorization":
"Basic %s" % station.base64string}
def __init__(self):
self._lock = Lock()
self._cond = Condition(self._lock)
self.state = ConnectionMixin.IDLE
self.connection_count = 0
class __impl(ImmortalThread):
tm_counter = Counter(0)
def __init__(self, timeout=2.0):
self.timeout = timeout
self.stations = {}
self._monitor = monitor.ChannelMonitor(self.timeout)
self.tm_number = self.tm_counter.increment()
self._response_tp = ThreadPool(1, 'Jace Response Pool')
self._pending_responses = Queue()
self._callbacks = {}
self._running = False
self._sync_get_lock = Lock()
self._last_sync_get = uptime.secs()
self._cv = Condition()
ImmortalThread.__init__(self, None, None,
'Jace Transaction Manager')
return
def start(self):
if not self._monitor.is_running():
self._monitor.start_monitor()
self._running = True
self._synchronous_transaction = Transaction(
self, None, self._bump_cv)
self._synchronous_transaction.set_timeout(self.timeout)
ImmortalThread.start(self)
return
def stop(self):
msglog.log('Jace', INFO, 'Stop Jace Prism Transaction Manger')
if self._monitor.is_running():
self._monitor.stop_monitor()
self._running = False
return
def run(self):
msglog.log('Jace', INFO, 'Starting Jace Prism Transaction Manger.')
while self._running:
try:
self.send_loop()
self.response_loop()
except:
msglog.log(
'Jace', WARN,
'Jace Transaction Manager - error sending next.')
msglog.exception()
return
def transaction_completion_handler(self, transaction):
self.tm_number = self.tm_counter.increment()
try:
tid = transaction.tid
s_id, callback = self._callbacks.get(tid)
if callback:
del self._callbacks[tid]
self._pending_responses.put(
(callback, transaction.get_response()))
except:
msglog.exception()
# recycle the transaction for reuse within the queue
self.stations.get(s_id).put_transaction(transaction)
return
def add_station(self, station):
s_id = station.get_id()
self.stations[s_id] = station
return
def get_synchronous(self, station, rqst):
self._sync_get_lock.acquire()
try:
t = self._synchronous_transaction
hdr = self._get_auth_header(station)
hdr['Connection'] = 'close'
t.build_request(rqst.url, None, hdr)
self._cv.acquire()
try:
response = ETimeout()
try:
t.send_request()
self._cv.wait(self.timeout)
self._last_sync_get = uptime.secs()
if t.is_expired():
t.cancel()
else:
response = t.get_response()
except:
t.cancel()
finally:
self._cv.release()
return response
finally:
self._sync_get_lock.release()
return
def _bump_cv(self, transaction):
# transaction isn't used
self._cv.acquire()
self._cv.notify()
self._cv.release()
return
def send_loop(self):
for s_id, station in self.stations.items():
for i in range(station.transaction_limit):
try:
t, rqst = station.get_next()
except Empty:
break
hdr = self._get_auth_header(station)
hdr['Connection'] = 'close'
t.build_request(rqst.url, None, hdr)
self._callbacks[t.tid] = (s_id, rqst.callback)
t.send_request()
return
def response_loop(self):
while 1:
try:
callback, rsp = self._pending_responses.get(False)
callback(rsp)
except Empty:
return
except:
msglog.log('Jace', WARN,
'Unexpected error in response_loop')
msglog.exception()
return
def _get_auth_header(self, station):
return {"Authorization": "Basic %s" % station.base64string}
class LightPoint(CompositeNode, EventProducerMixin):
def __init__(self):
self.__group = None
self._value = None
self._old_value = None
self._last_update = 0
self.__cv = Condition()
super(LightPoint, self).__init__()
EventProducerMixin.__init__(self)
def configure(self, cd):
super(LightPoint, self).configure(cd)
set_attribute(self, 'lightpoint_id', REQUIRED, cd, int)
set_attribute(self, 'timeout', 2, cd, int)
#relay number 5 actuates lights
set_attribute(self, 'relay_num', 5, cd, int)
def configuration(self):
cd = super(LightPoint, self).configuration()
get_attribute(self, 'lightpoint_id', cd)
get_attribute(self, 'timeout', cd)
get_attribute(self, 'relay_num', cd)
return cd
def start(self):
self.parent.parent.register(self)
super(LightPoint, self).start()
def get(self, skipCache=0):
rslt = self._value
# cache miss
if (uptime.secs() - self._last_update) > self.group.ttl:
# motes periodically push updates - if it's been silent for
# too long force an update. @fixme: the first read will still
# return stale data - add blocking call and ETimeout logic
last = self._last_update
self.__cv.acquire()
try:
try:
self._force_update()
except:
# an error using the XCommand interface occured
# raise an exception but do not cache the ETimeout
msglog.exception()
raise ETimeout()
self.__cv.wait(self.timeout)
if last != self._last_update:
# an update has occurred
rslt = self._value
else:
self._last_update = uptime.secs()
# let ETimeouts affect our value caching as well,
# if a better update comes from the mesh, great.
rslt = self._value = ETimeout()
finally:
self.__cv.release()
if isinstance(rslt, ETimeout):
raise rslt
return rslt
def set(self, value):
value = int(value)
if value < 0 or value > 1:
raise EInvalidValue()
self.group.server.actuate(self.lightpoint_id, self.relay_num, value)
def has_cov(self):
return 1
def event_subscribe(self, *args):
super(LightPoint, self).event_subscribe(self, *args)
self._old_value = self.get()
# generate initial event
self.event_generate(ChangeOfValueEvent(self, self._old_value,
self._old_value, time.time()))
def _force_update(self):
ACTION_NONE = 2
self.group.server.actuate(self.lightpoint_id, self.relay_num, ACTION_NONE)
def update(self, data):
self.__cv.acquire()
try:
self._old_value = self._value
self._value = data.get('relayState1')
self._last_update = uptime.secs()
self.__cv.notifyAll()
self.event_generate(ChangeOfValueEvent(self, self._old_value,
self._value, time.time()))
finally:
self.__cv.release()
def __get_group(self):
if self.__group is None:
self.__group = self.parent
return self.__group
group = property(__get_group)
class Schedule(CompositeNode,EventProducerMixin):
def __init__(self):
CompositeNode.__init__(self)
EventProducerMixin.__init__(self)
self._schedule_lock = Lock()
self._schedule_condition = Condition()
self._value_lock = Lock()
self._value_condition = Condition()
self.__schedule = None
self.__value = None
def configure(self,config):
CompositeNode.configure(self,config)
def configuration(self):
config = CompositeNode.configuration(self)
return config
def start(self):
CompositeNode.start(self)
def stop(self):
CompositeNode.stop(self)
def set_schedule(self,client,schedule):
self._schedule_lock.acquire()
self._schedule_condition.acquire()
try:
self.__schedule = schedule
self._schedule_condition.notifyAll()
finally:
self._schedule_lock.release()
self._schedule_condition.release()
self.event_generate(ScheduleChangedEvent(client,schedule))
def get_schedule(self):
self._schedule_lock.acquire()
try:
schedule = self.__schedule
finally:
self._schedule_lock.release()
if isinstance(schedule,Exception):
raise schedule
return schedule
##
# @param schedule Schedule client believes to be current.
def get_next_schedule(self,schedule,timeout=None):
self._schedule_lock.acquire()
try:
if schedule is not self.__schedule:
return self.__schedule
self._schedule_condition.acquire()
finally:
self._schedule_lock.release()
try:
self._schedule_condition.wait(timeout)
schedule = self.__schedule
finally:
self._schedule_condition.release()
if isinstance(schedule,Exception):
raise schedule
return schedule
def is_schedule_current(self,schedule):
self._schedule_lock.acquire()
try:
changed = not schedule is self.__schedule
finally:
self._schedule_lock.release()
return changed
def _set(self,value):
self._value_lock.acquire()
self._value_condition.acquire()
try:
old = self.__value
self.__value = value
self._value_condition.notifyAll()
finally:
self._value_lock.release()
self._value_condition.release()
if old != value:
self.event_generate(ChangeOfValueEvent(self,old,value))
def get(self, skipCache=0):
self._value_lock.acquire()
try:
value = self.__value
finally:
self._value_lock.release()
return value
def get_next_value(self,value,timeout=None):
self._value_lock.acquire()
try:
if value != self.__value:
return self.__value
self._value_condition.acquire()
finally:
self._value_lock.release()
try:
self._value_condition.wait(timeout)
value = self.__value
finally:
self._value_condition.release()
return value
def is_value_current(self,value):
self._value_lock.acquire()
try:
changed = not value == self.__value
finally:
self._value_lock.release()
return changed
def __init__(self):
self._lock = Lock()
self._cond = Condition(self._lock)
self.state = ConnectionMixin.IDLE
self.connection_count = 0