Adding inbound OBP Processing
This commit is contained in:
Cort Buffington
parent
364ead81ec
commit
877e1c6c65
126
bridge.py
126
bridge.py
@ -413,9 +413,135 @@ class routerOBP(OPENBRIDGE):
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def unit_received(self, _peer_id, _rf_src, _dst_id, _seq, _slot, _frame_type, _dtype_vseq, _stream_id, _data):
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global UNIT_MAP
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pkt_time = time()
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dmrpkt = _data[20:53]
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_bits = _data[15]
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# Make/update this unit in the UNIT_MAP cache
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UNIT_MAP[_rf_src] = (self.name, pkt_time)
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# Is this a new call stream?
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if (_stream_id != self.STATUS[_slot]['RX_STREAM_ID']):
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# Collision in progress, bail out!
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if (self.STATUS[_slot]['RX_TYPE'] != HBPF_SLT_VTERM) and (pkt_time < (self.STATUS[_slot]['RX_TIME'] + STREAM_TO)) and (_rf_src != self.STATUS[_slot]['RX_RFS']):
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logger.warning('(%s) Packet received with STREAM ID: %s <FROM> SUB: %s PEER: %s <TO> UNIT %s, SLOT %s collided with existing call', self._system, int_id(_stream_id), int_id(_rf_src), int_id(_peer_id), int_id(_dst_id), _slot)
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return
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# Create a destination list for the call:
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if _dst_id in UNIT_MAP:
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if UNIT_MAP[_dst_id][0] != self._system:
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self._targets = [UNIT_MAP[_dst_id][0]]
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_target_route = UNIT_MAP[_dst_id][0]
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else:
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self._targets = []
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logger.debug('UNIT call to a subscriber on the same system, send nothing')
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else:
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self._targets = list(systems)
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self._targets.remove(self._system)
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_target_route = 'FLOOD'
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# This is a new call stream, so log & report
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self.STATUS[_slot]['RX_START'] = pkt_time
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logger.info('(%s) *UNIT CALL START* STREAM ID: %s SUB: %s (%s) PEER: %s (%s) UNIT: %s (%s), TS: %s, FORWARD: %s', \
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self._system, int_id(_stream_id), get_alias(_rf_src, subscriber_ids), int_id(_rf_src), get_alias(_peer_id, peer_ids), int_id(_peer_id), get_alias(_dst_id, talkgroup_ids), int_id(_dst_id), _slot, _target_route)
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if CONFIG['REPORTS']['REPORT']:
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self._report.send_bridgeEvent('UNIT VOICE,START,RX,{},{},{},{},{},{},{}'.format(self._system, int_id(_stream_id), int_id(_peer_id), int_id(_rf_src), _slot, int_id(_dst_id), _target_route).encode(encoding='utf-8', errors='ignore'))
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for _target in self._targets:
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_target_status = systems[_target].STATUS
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_target_system = self._CONFIG['SYSTEMS'][_target]
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if self._CONFIG['SYSTEMS'][_target]['MODE'] == 'OPENBRIDGE':
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if (_stream_id not in _target_status):
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# This is a new call stream on the target
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_target_status[_stream_id] = {
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'START': pkt_time,
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'CONTENTION':False,
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'RFS': _rf_src,
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'TGID': _dst_id,
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}
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logger.info('(%s) Unit call bridged to OBP System: %s TS: %s, TGID: %s', self._system, _target, _slot, int_id(_dst_id))
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if CONFIG['REPORTS']['REPORT']:
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systems[_target]._report.send_bridgeEvent('UNIT VOICE,START,TX,{},{},{},{},{},{}'.format(_target, int_id(_stream_id), int_id(_peer_id), int_id(_rf_src), _slot, int_id(_dst_id)).encode(encoding='utf-8', errors='ignore'))
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# Record the time of this packet so we can later identify a stale stream
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_target_status[_stream_id]['LAST'] = pkt_time
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# Clear the TS bit -- all OpenBridge streams are effectively on TS1
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_tmp_bits = _bits & ~(1 << 7)
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# Assemble transmit HBP packet
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_tmp_data = b''.join([_data[:15], _tmp_bits.to_bytes(1, 'big'), _data[16:20]])
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_data = b''.join([_tmp_data, dmrpkt])
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else:
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# BEGIN STANDARD CONTENTION HANDLING
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#
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# The rules for each of the 4 "ifs" below are listed here for readability. The Frame To Send is:
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# From a different group than last RX from this HBSystem, but it has been less than Group Hangtime
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# From a different group than last TX to this HBSystem, but it has been less than Group Hangtime
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# From the same group as the last RX from this HBSystem, but from a different subscriber, and it has been less than stream timeout
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# From the same group as the last TX to this HBSystem, but from a different subscriber, and it has been less than stream timeout
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# The "continue" at the end of each means the next iteration of the for loop that tests for matching rules
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#
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if ((_dst_id != _target_status[_slot]['RX_TGID']) and ((pkt_time - _target_status[_slot]['RX_TIME']) < _target_system['GROUP_HANGTIME'])):
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if _frame_type == HBPF_DATA_SYNC and _dtype_vseq == HBPF_SLT_VHEAD and self.STATUS[_slot]['RX_STREAM_ID'] != _stream_id:
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logger.info('(%s) Call not routed to destination %s, target active or in group hangtime: HBSystem: %s, TS: %s, DEST: %s', self._system, int_id(_dst_id), _target, _slot, int_id(_target_status[_slot]['RX_TGID']))
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continue
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if ((_dst_id != _target_status[_slot]['TX_TGID']) and ((pkt_time - _target_status[_slot]['TX_TIME']) < _target_system['GROUP_HANGTIME'])):
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if _frame_type == HBPF_DATA_SYNC and _dtype_vseq == HBPF_SLT_VHEAD and self.STATUS[_slot]['RX_STREAM_ID'] != _stream_id:
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logger.info('(%s) Call not routed to destination %s, target in group hangtime: HBSystem: %s, TS: %s, DEST: %s', self._system, int_id(_dst_id), _target, _slot, int_id(_target_status[_slot]['TX_TGID']))
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continue
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if (_dst_id == _target_status[_slot]['RX_TGID']) and ((pkt_time - _target_status[_slot]['RX_TIME']) < STREAM_TO):
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if _frame_type == HBPF_DATA_SYNC and _dtype_vseq == HBPF_SLT_VHEAD and self.STATUS[_slot]['RX_STREAM_ID'] != _stream_id:
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logger.info('(%s) Call not routed to destination %s, matching call already active on target: HBSystem: %s, TS: %s, DEST: %s', self._system, int_id(_dst_id), _target, _slot, int_id(_target_status[_slot]['RX_TGID']))
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continue
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if (_dst_id == _target_status[_slot]['TX_TGID']) and (_rf_src != _target_status[_slot]['TX_RFS']) and ((pkt_time - _target_status[_slot]['TX_TIME']) < STREAM_TO):
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if _frame_type == HBPF_DATA_SYNC and _dtype_vseq == HBPF_SLT_VHEAD and self.STATUS[_slot]['RX_STREAM_ID'] != _stream_id:
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logger.info('(%s) Call not routed for subscriber %s, call route in progress on target: HBSystem: %s, TS: %s, DEST: %s, SUB: %s', self._system, int_id(_rf_src), _target, _slot, int_id(_target_status[_slot]['TX_TGID']), int_id(_target_status[_slot]['TX_RFS']))
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continue
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# Record target information if this is a new call stream?
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if (_stream_id != self.STATUS[_slot]['RX_STREAM_ID']):
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# Record the DST TGID and Stream ID
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_target_status[_slot]['TX_START'] = pkt_time
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_target_status[_slot]['TX_TGID'] = _dst_id
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_target_status[_slot]['TX_STREAM_ID'] = _stream_id
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_target_status[_slot]['TX_RFS'] = _rf_src
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_target_status[_slot]['TX_PEER'] = _peer_id
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logger.info('(%s) Unit call bridged to HBP System: %s TS: %s, UNIT: %s', self._system, _target, _slot, int_id(_dst_id))
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if CONFIG['REPORTS']['REPORT']:
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systems[_target]._report.send_bridgeEvent('UNIT VOICE,START,TX,{},{},{},{},{},{}'.format(_target, int_id(_stream_id), int_id(_peer_id), int_id(_rf_src), _slot, int_id(_dst_id)).encode(encoding='utf-8', errors='ignore'))
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# Set other values for the contention handler to test next time there is a frame to forward
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_target_status[_slot]['TX_TIME'] = pkt_time
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_target_status[_slot]['TX_TYPE'] = _dtype_vseq
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#send the call:
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systems[_target].send_system(_data)
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# Final actions - Is this a voice terminator?
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if (_frame_type == HBPF_DATA_SYNC) and (_dtype_vseq == HBPF_SLT_VTERM) and (self.STATUS[_slot]['RX_TYPE'] != HBPF_SLT_VTERM):
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self._targets = []
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call_duration = pkt_time - self.STATUS[_slot]['RX_START']
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logger.info('(%s) *UNIT CALL END* STREAM ID: %s SUB: %s (%s) PEER: %s (%s) UNIT %s (%s), TS %s, Duration: %.2f', \
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self._system, int_id(_stream_id), get_alias(_rf_src, subscriber_ids), int_id(_rf_src), get_alias(_peer_id, peer_ids), int_id(_peer_id), get_alias(_dst_id, talkgroup_ids), int_id(_dst_id), _slot, call_duration)
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if CONFIG['REPORTS']['REPORT']:
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self._report.send_bridgeEvent('UNIT VOICE,END,RX,{},{},{},{},{},{},{:.2f}'.format(self._system, int_id(_stream_id), int_id(_peer_id), int_id(_rf_src), _slot, int_id(_dst_id), call_duration).encode(encoding='utf-8', errors='ignore'))
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# Mark status variables for use later
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self.STATUS[_slot]['RX_PEER'] = _peer_id
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self.STATUS[_slot]['RX_SEQ'] = _seq
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self.STATUS[_slot]['RX_RFS'] = _rf_src
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self.STATUS[_slot]['RX_TYPE'] = _dtype_vseq
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self.STATUS[_slot]['RX_TGID'] = _dst_id
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self.STATUS[_slot]['RX_TIME'] = pkt_time
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self.STATUS[_slot]['RX_STREAM_ID'] = _stream_id
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def dmrd_received(self, _peer_id, _rf_src, _dst_id, _seq, _slot, _call_type, _frame_type, _dtype_vseq, _stream_id, _data):
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