def read_property_multiple_g3(device, properties, timeout=3.0, no_fallback=0):
# Some device's do not properly answer multiple properties to multiple
# objects. This method first tries RPM, then RPM(singular) and finially RP
# to retrieve a list of properties.
# A readPropertyFallback attribute remembers which mode was successful and
# that is used in subsequent reads.
if (not (_device_table.has_key(device)) or \
(_device_table[device].readPropertyFallback < BACNET_RPM_SINGLE_OK)):
results = _read_property_multiple_g3(device,properties, timeout)
if (results != None):
if (len(results) == len(properties)):
_device_table[device].readPropertyFallback=1 # No fallback needed.
return results
elif no_fallback != 0:
return results
else:
# Broken device?
_device_table[device].readPropertyFallback=0
results = []
properties = copy.copy(properties)
while properties:
property = properties.pop(0)
try:
rp_result = read_property_g3(device, property)
if (rp_result is not None): #remember this worked
if (_device_table[device].readPropertyFallback == BACNET_RPM_UNKNOWN):
msglog.log('broadway', msglog.types.WARN,
'read_property fallback for device = ' +
str(device))
_device_table[device].readPropertyFallback = BACNET_RPM_NOT_SUPPORTED
#convert result to RPM style
result = sequence.ReadAccessResult()
result.object_identifier = rp_result.object_identifier
result.list_of_results = [
sequence._ReadPropertyMultipleResult(
property_identifier=rp_result.property_identifier,
property_array_index=rp_result.property_array_index,
property_value=rp_result.property_value)
]
else:
# Place holder...
result = ReadAccessResult()
except BACnetError, e:
# Simulate RPMs behaviour when a subset of reads fail.
error = sequence.Error(decode=tag.decode(e.npdu.data).value)
result = sequence.ReadAccessResult()
result.object_identifier = data.BACnetObjectIdentifier(property[0],
property[1])
if len(property) > 3 and property[3] != -1:
index = property[3]
else:
index = -1
result.list_of_results = [
sequence._ReadPropertyMultipleResult(
property_identifier=property[2],
property_array_index=index,
property_access_error=error)
]
results.append(result)
def read_property_multiple_g3(device, properties, timeout=3.0, no_fallback=0):
# Some device's do not properly answer multiple properties to multiple
# objects. This method first tries RPM, then RPM(singular) and finially RP
# to retrieve a list of properties.
# A readPropertyFallback attribute remembers which mode was successful and
# that is used in subsequent reads.
if not (_device_table.has_key(device)) or (_device_table[device].readPropertyFallback < BACNET_RPM_SINGLE_OK):
results = _read_property_multiple_g3(device, properties, timeout)
if results != None:
if len(results) == len(properties):
_device_table[device].readPropertyFallback = 1 # No fallback needed.
return results
elif no_fallback != 0:
return results
else:
# Broken device?
_device_table[device].readPropertyFallback = 0
results = []
properties = copy.copy(properties)
while properties:
property = properties.pop(0)
try:
rp_result = read_property_g3(device, property)
if rp_result is not None: # remember this worked
if _device_table[device].readPropertyFallback == BACNET_RPM_UNKNOWN:
msglog.log("broadway", msglog.types.WARN, "read_property fallback for device = " + str(device))
_device_table[device].readPropertyFallback = BACNET_RPM_NOT_SUPPORTED
# convert result to RPM style
result = sequence.ReadAccessResult()
result.object_identifier = rp_result.object_identifier
result.list_of_results = [
sequence._ReadPropertyMultipleResult(
property_identifier=rp_result.property_identifier,
property_array_index=rp_result.property_array_index,
property_value=rp_result.property_value,
)
]
else:
# Place holder...
result = ReadAccessResult()
except BACnetError, e:
# Simulate RPMs behaviour when a subset of reads fail.
error = sequence.Error(decode=tag.decode(e.npdu.data).value)
result = sequence.ReadAccessResult()
result.object_identifier = data.BACnetObjectIdentifier(property[0], property[1])
if len(property) > 3 and property[3] != -1:
index = property[3]
else:
index = -1
result.list_of_results = [
sequence._ReadPropertyMultipleResult(
property_identifier=property[2], property_array_index=index, property_access_error=error
)
]
results.append(result)
def server_read_property_multiple(device, msg):
request = tag.decode(msg.data)
if DEBUG:
print "SERVER READ PROPERTY MULTIPLE request: ", request
results = []
# convert request into a list of read access specifications
ss = sequence.context_read_access_specification_list(request)
o = None
p = None
if DEBUG:
print "SERVER READ PROPERTY sequence: ", ss
# device.time_rpm.begin()
for s in ss:
o = device.find_bacnet_object(s.object_identifier)
if DEBUG:
print "SERVER READ PROPERTY object: ", o
result = sequence.ReadAccessResult()
result.object_identifier = s.object_identifier
props = []
for spec in s.list_of_specs:
prop_result = sequence._ReadPropertyMultipleResult()
prop_result.property_identifier = spec.property_identifier
i = None
if spec.property_index != OPTIONAL:
i = spec.property_index
prop_result.property_array_index = i
try:
p = o.find_property(spec.property_identifier)
prop_result.property_value = p.as_tags(i)
except:
if p:
prop_result.property_access_error = sequence.Error(2, 25) # operational error
elif o:
prop_result.property_access_error = sequence.Error(2, 32) # unknown property
else: # unkown object
prop_result.property_access_error = sequence.Error(1, 31) # unknown object
if DEBUG:
print "SERVER property_access_error: ", str(
prop_result.property_access_error
), s.object_identifier.object_type, s.object_identifier.instance_number, str(
spec.property_identifier
)
if DEBUG:
print "SERVER READ PROPERTY property: ", p
props.append(prop_result.encoding)
result.list_of_results = props
results.extend(result.encoding)
if DEBUG:
print "SERVER READ PROPERTY MULTIPLE request results: ", results
answer = complex_ack_pdu(msg, results)
# device.time_rpm.end()
return answer
def server_read_property_multiple(device, msg):
request = tag.decode(msg.data)
if DEBUG: print 'SERVER READ PROPERTY MULTIPLE request: ', request
results = []
#convert request into a list of read access specifications
ss = sequence.context_read_access_specification_list(request)
o = None
p = None
if DEBUG: print 'SERVER READ PROPERTY sequence: ', ss
#device.time_rpm.begin()
for s in ss:
o = device.find_bacnet_object(s.object_identifier)
if DEBUG: print 'SERVER READ PROPERTY object: ', o
result = sequence.ReadAccessResult()
result.object_identifier = s.object_identifier
props = []
for spec in s.list_of_specs:
prop_result = sequence._ReadPropertyMultipleResult()
prop_result.property_identifier = spec.property_identifier
i = None
if spec.property_index != OPTIONAL:
i = spec.property_index
prop_result.property_array_index = i
try:
p = o.find_property(spec.property_identifier)
prop_result.property_value = p.as_tags(i)
except:
if p:
prop_result.property_access_error = sequence.Error(2,25) #operational error
elif o:
prop_result.property_access_error = sequence.Error(2,32) #unknown property
else: #unkown object
prop_result.property_access_error = sequence.Error(1,31) #unknown object
if DEBUG: print 'SERVER property_access_error: ', str(prop_result.property_access_error), \
s.object_identifier.object_type, s.object_identifier.instance_number, \
str(spec.property_identifier)
if DEBUG: print 'SERVER READ PROPERTY property: ', p
props.append(prop_result.encoding)
result.list_of_results = props
results.extend(result.encoding)
if DEBUG: print 'SERVER READ PROPERTY MULTIPLE request results: ', results
answer = complex_ack_pdu(msg, results)
#device.time_rpm.end()
return answer