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Add error logging for crc32 validation failures. #563

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merged 2 commits into from
Oct 19, 2023
Merged

Add error logging for crc32 validation failures. #563

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bbae27f
Add error logging for crc32 validation failures
why-arong Oct 18, 2023
e8bb235
Simplify code to improve readability
why-arong Oct 19, 2023
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6 changes: 6 additions & 0 deletions pymysqlreplication/event.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
import datetime
import decimal
import zlib
import logging

from pymysqlreplication.constants.STATUS_VAR_KEY import *
from pymysqlreplication.exceptions import StatusVariableMismatch
Expand Down Expand Up @@ -58,6 +59,11 @@ def _verify_event(self):
footer = self.packet.read(4)
byte_data = zlib.crc32(data).to_bytes(4, byteorder="little")
self._is_event_valid = True if byte_data == footer else False
if not self._is_event_valid:
logging.error(
f"An CRC32 has failed for the event type {self.event_type}, "
"indicating a potential integrity issue with the data."
)
self.packet.read_bytes -= 19 + self.event_size + 4
self.packet.rewind(20)

Expand Down