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https://github.com/JoelBender/bacpypes
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sample application to beat on the event message texts of the hacked up ReadPropertyMultipleServer
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Joel Bender
parent
f3378ba83c
commit
87514b05c8
265
samples/ReadWriteEventMessageTexts.py
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265
samples/ReadWriteEventMessageTexts.py
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#!/usr/bin/env python
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"""
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This application is similar to ReadWriteProperty but it is just for beating on
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the event message texts, an array of character strings.
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"""
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import sys
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from bacpypes.debugging import bacpypes_debugging, ModuleLogger
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from bacpypes.consolelogging import ConfigArgumentParser
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from bacpypes.consolecmd import ConsoleCmd
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from bacpypes.core import run, enable_sleeping
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from bacpypes.iocb import IOCB
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from bacpypes.pdu import Address
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from bacpypes.object import get_datatype
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from bacpypes.apdu import SimpleAckPDU, \
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ReadPropertyRequest, ReadPropertyACK, WritePropertyRequest
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from bacpypes.primitivedata import Unsigned, CharacterString
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from bacpypes.constructeddata import Array, ArrayOf, Any
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from bacpypes.app import BIPSimpleApplication
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from bacpypes.service.device import LocalDeviceObject
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# some debugging
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_debug = 0
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_log = ModuleLogger(globals())
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# globals
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this_application = None
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context = None
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#
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# ReadWritePropertyConsoleCmd
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#
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@bacpypes_debugging
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class ReadWritePropertyConsoleCmd(ConsoleCmd):
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def do_read(self, args):
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"""read [ <indx> ]"""
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args = args.split()
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if _debug: ReadWritePropertyConsoleCmd._debug("do_read %r", args)
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global context
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try:
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addr, obj_type, obj_inst = context
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prop_id = 'eventMessageTexts'
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datatype = get_datatype(obj_type, prop_id)
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if not datatype:
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raise ValueError("invalid property for object type")
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# build a request
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request = ReadPropertyRequest(
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objectIdentifier=(obj_type, obj_inst),
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propertyIdentifier=prop_id,
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)
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request.pduDestination = Address(addr)
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if len(args) == 1:
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request.propertyArrayIndex = int(args[0])
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if _debug: ReadWritePropertyConsoleCmd._debug(" - request: %r", request)
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# make an IOCB
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iocb = IOCB(request)
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if _debug: ReadWritePropertyConsoleCmd._debug(" - iocb: %r", iocb)
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# give it to the application
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this_application.request_io(iocb)
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# wait for it to complete
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iocb.wait()
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# do something for success
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if iocb.ioResponse:
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apdu = iocb.ioResponse
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# should be an ack
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if not isinstance(apdu, ReadPropertyACK):
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if _debug: ReadWritePropertyConsoleCmd._debug(" - not an ack")
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return
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# find the datatype
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datatype = get_datatype(apdu.objectIdentifier[0], apdu.propertyIdentifier)
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if _debug: ReadWritePropertyConsoleCmd._debug(" - datatype: %r", datatype)
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if not datatype:
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raise TypeError("unknown datatype")
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# special case for array parts, others are managed by cast_out
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if issubclass(datatype, Array) and (apdu.propertyArrayIndex is not None):
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if apdu.propertyArrayIndex == 0:
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value = apdu.propertyValue.cast_out(Unsigned)
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else:
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value = apdu.propertyValue.cast_out(datatype.subtype)
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else:
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value = apdu.propertyValue.cast_out(datatype)
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if _debug: ReadWritePropertyConsoleCmd._debug(" - value: %r", value)
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sys.stdout.write(str(value) + '\n')
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if hasattr(value, 'debug_contents'):
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value.debug_contents(file=sys.stdout)
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sys.stdout.flush()
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# do something for error/reject/abort
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if iocb.ioError:
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sys.stdout.write(str(iocb.ioError) + '\n')
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except Exception as error:
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ReadWritePropertyConsoleCmd._exception("exception: %r", error)
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def do_write(self, args):
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"""
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write <indx> <value>
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write 0 <len>
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write [ <value> ]...
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"""
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args = args.split()
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ReadWritePropertyConsoleCmd._debug("do_write %r", args)
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try:
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addr, obj_type, obj_inst = context
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prop_id = 'eventMessageTexts'
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indx = None
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if args and args[0].isdigit():
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indx = int(args[0])
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if indx == 0:
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value = Unsigned(int(args[1]))
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else:
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value = CharacterString(args[1])
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else:
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value = ArrayOf(CharacterString)(args[0:])
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# build a request
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request = WritePropertyRequest(
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objectIdentifier=(obj_type, obj_inst),
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propertyIdentifier=prop_id
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)
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request.pduDestination = Address(addr)
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# save the value
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request.propertyValue = Any()
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try:
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request.propertyValue.cast_in(value)
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except Exception as error:
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ReadWritePropertyConsoleCmd._exception("WriteProperty cast error: %r", error)
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# optional array index
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if indx is not None:
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request.propertyArrayIndex = indx
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if _debug: ReadWritePropertyConsoleCmd._debug(" - request: %r", request)
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# make an IOCB
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iocb = IOCB(request)
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if _debug: ReadWritePropertyConsoleCmd._debug(" - iocb: %r", iocb)
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# give it to the application
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this_application.request_io(iocb)
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# wait for it to complete
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iocb.wait()
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# do something for success
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if iocb.ioResponse:
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# should be an ack
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if not isinstance(iocb.ioResponse, SimpleAckPDU):
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if _debug: ReadWritePropertyConsoleCmd._debug(" - not an ack")
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return
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sys.stdout.write("ack\n")
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# do something for error/reject/abort
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if iocb.ioError:
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sys.stdout.write(str(iocb.ioError) + '\n')
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except Exception as error:
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ReadWritePropertyConsoleCmd._exception("exception: %r", error)
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def do_rtn(self, args):
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"""rtn <addr> <net> ... """
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args = args.split()
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if _debug: ReadWritePropertyConsoleCmd._debug("do_rtn %r", args)
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# safe to assume only one adapter
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adapter = this_application.nsap.adapters[0]
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if _debug: ReadWritePropertyConsoleCmd._debug(" - adapter: %r", adapter)
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# provide the address and a list of network numbers
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router_address = Address(args[0])
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network_list = [int(arg) for arg in args[1:]]
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# pass along to the service access point
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this_application.nsap.add_router_references(adapter, router_address, network_list)
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#
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# __main__
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#
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def main():
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global this_application, context
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# parse the command line arguments
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parser = ConfigArgumentParser(description=__doc__)
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parser.add_argument(
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"address",
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help="address of server",
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)
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parser.add_argument(
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"objtype",
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help="object type",
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)
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parser.add_argument(
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"objinst", type=int,
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help="object instance",
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)
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args = parser.parse_args()
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if _debug: _log.debug("initialization")
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if _debug: _log.debug(" - args: %r", args)
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# set the context, the collection of the above parameters
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context = args.address, args.objtype, args.objinst
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if _debug: _log.debug(" - context: %r", context)
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# make a device object
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this_device = LocalDeviceObject(
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objectName=args.ini.objectname,
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objectIdentifier=int(args.ini.objectidentifier),
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maxApduLengthAccepted=int(args.ini.maxapdulengthaccepted),
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segmentationSupported=args.ini.segmentationsupported,
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vendorIdentifier=int(args.ini.vendoridentifier),
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)
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# make a simple application
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this_application = BIPSimpleApplication(this_device, args.ini.address)
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# get the services supported
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services_supported = this_application.get_services_supported()
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if _debug: _log.debug(" - services_supported: %r", services_supported)
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# let the device object know
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this_device.protocolServicesSupported = services_supported.value
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# make a console
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this_console = ReadWritePropertyConsoleCmd()
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if _debug: _log.debug(" - this_console: %r", this_console)
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# enable sleeping will help with threads
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enable_sleeping()
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_log.debug("running")
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run()
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_log.debug("fini")
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if __name__ == "__main__":
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main()
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