def update_cache(self, prop):
if debug: print 'update cache: ' #, prop, prop.ttl
#age_group = self.find_age_group_for(prop)
rpm = device_accepts_rpm(self.device)
if debug: print 'does device RPM? :', str(rpm)
if rpm:
if debug: print 'device accepts rpm'
age_group = self.predicted_next_nodes_to_expire(prop)
keys = age_group.keys()
properties = []
for x in keys: #go through this to guarentee having the same order in the results as the properties
properties.append(age_group[x])
if debug: print ' rpm: ', x
if debug: print 'RPM for :', self.device, properties
r = read_property_multiple_g3(self.device, properties)
if debug: print ' RPM result: ', r
now = time.time()
for x in keys:
result = Result()
result.timestamp = now
result.cached = 1
v = r.pop(0)
if debug: print ' RPM decode: ', v #, x
try:
pv = v.list_of_results[0].property_value
x.decode(pv)
result.value = x._value
except sequence.ETagMissing, e:
result.value = sequence.ETagMissing('ETagMissing():\n ' + \
str(e))
if debug: print ' add to cache: ', result.value
self.cache[x] = result
x.last_result = result
def get_rp(self, prop, timeout=3.0):
if debug: print 'reading a property'
now = time.time()
result = Result()
result.timestamp = now
result.cached = 1
try:
if debug: print self.device, prop.property_tuple
r = read_property_g3(self.device, prop.property_tuple, timeout)
v = r.property_value
self.v = v
prop.decode(v)
except BACnetError, e:
prop._value = e
result.timestamp = now - prop.ttl
def get_result(self, skipCache=0):
cache = self.cache
cache.lock.acquire()
try:
if skipCache or (cache.response is None) or \
((cache.timestamp + cache.ttl) < time()):
cached = 0
cache._refresh()
else:
cached = 1
result = Result()
result.timestamp = cache.timestamp
result.cached = cached
result.value = apply(
self.read,
[cache.response, self.offset, cache.start, self.orders])
finally:
cache.lock.release()
return result
def get_result(self, skipCache=0):
cache = self.cache
cache.lock.acquire()
try:
if skipCache or (cache.response is None) or \
((cache.timestamp + cache.ttl) < time()):
cached = 0
cache._refresh()
else:
cached = 1
result = Result()
result.timestamp = cache.timestamp
result.cached = cached
result.value = apply(self.read, [cache.response,
self.offset,
cache.start,
self.orders])
finally:
cache.lock.release()
return result
def get(self, manager, **keywords):
if debug: print 'Start of Batch:%s' % (self.properties)
now = time.time()
self.last_get_time = now
answer = {} #return a dictionary of ids and results
cache = self.cache
cache.lock.acquire()
try:
try:
if (cache.response is None) or \
((cache.timestamp + cache.ttl) < time.time()):
cached = 0
cache._refresh()
else:
cached = 1
for id in self.ids:
ion = self.map[id]
result = Result()
result.timestamp = cache.timestamp
result.cached = cached
result.value = apply(
ion.read,
[cache.response, ion.offset, cache.start, ion.orders])
answer[id] = result
self._error_counter = 0
except ETimeout, e:
return e #subscription manager will re-raise the timeout, not cause for bad batch
except:
msglog.exception()
self._error_counter += 1
if self._error_counter > 15: #catch run away thrashing
for id in self.ids:
nr = self.map[id]
nr.set_batch_manager(
None) #none of these points can batch
raise EBadBatch('bacnet', self, 'error threshold exceeded')
def get(self, manager, **keywords):
if debug: print 'Start of Batch:%s' % (self.properties)
now = time.time()
self.last_get_time = now
answer = {} #return a dictionary of ids and results
cache = self.cache
cache.lock.acquire()
try:
try:
if (cache.response is None) or \
((cache.timestamp + cache.ttl) < time.time()):
cached = 0
cache._refresh()
else:
cached = 1
for id in self.ids:
ion = self.map[id]
result = Result()
result.timestamp = cache.timestamp
result.cached = cached
result.value = apply(ion.read, [cache.response,
ion.offset,
cache.start,
ion.orders])
answer[id]=result
self._error_counter = 0
except ETimeout, e:
return e #subscription manager will re-raise the timeout, not cause for bad batch
except:
msglog.exception()
self._error_counter += 1
if self._error_counter > 15: #catch run away thrashing
for id in self.ids:
nr = self.map[id]
nr.set_batch_manager(None) #none of these points can batch
raise EBadBatch('bacnet', self, 'error threshold exceeded')