eive-tmtc/eive_tmtc/cfdp/tm.py
2023-11-22 10:17:05 +01:00

30 lines
1.2 KiB
Python

import logging
from typing import Any
from eive_tmtc.config.definitions import CFDP_APID
from spacepackets.ccsds import SPACE_PACKET_HEADER_SIZE
from spacepackets.cfdp import PduFactory, PduType
from eive_tmtc.cfdp.handler import CfdpInCcsdsHandler
from tmtccmd.tmtc import SpecificApidHandlerBase
_LOGGER = logging.getLogger(__name__)
class CfdpInCcsdsWrapper(SpecificApidHandlerBase):
def __init__(self, cfdp_in_ccsds_handler: CfdpInCcsdsHandler):
self.handler = cfdp_in_ccsds_handler
super().__init__(CFDP_APID, None)
def handle_tm(self, packet: bytes, _user_args: Any):
# Ignore the space packet header. Its only purpose is to use the same protocol and
# have a seaprate APID for space packets. If this function is called, the APID is correct.
pdu = packet[SPACE_PACKET_HEADER_SIZE:]
generic_pdu = PduFactory.from_raw(pdu)
assert generic_pdu is not None
if generic_pdu.pdu_type == PduType.FILE_DATA:
_LOGGER.info("Received File Data PDU")
else:
directive_type = PduFactory.pdu_directive_type(pdu)
_LOGGER.info(f"Received File Directive PDU with type {directive_type!r}")
self.handler.insert_pdu_packet(generic_pdu)