If mysql begin a transaction and lost connection, reconnect

[zhanghaofei]

Fix the following problems:

Traceback (most recent call last):
  File "orator_db.py", line 97, in <module>
    with db.connection('yh_edu').transaction():
  File "/usr/lib/python3.6/contextlib.py", line 81, in __enter__
    return next(self.gen)
  File "/usr/lib/python3.6/site-packages/orator/connections/connection.py", line 288, in transaction
    self.begin_transaction()
  File "/usr/lib/python3.6/site-packages/orator/connections/mysql_connection.py", line 42, in begin_transaction
    self._connection.autocommit(False)
  File "/usr/lib/python3.6/site-packages/pymysql/connections.py", line 753, in autocommit
    self._send_autocommit_mode()
  File "/usr/lib/python3.6/site-packages/pymysql/connections.py", line 771, in _send_autocommit_mode
    self._read_ok_packet()
  File "/usr/lib/python3.6/site-packages/pymysql/connections.py", line 760, in _read_ok_packet
    pkt = self._read_packet()
  File "/usr/lib/python3.6/site-packages/pymysql/connections.py", line 991, in _read_packet
    packet_header = self._read_bytes(4)
  File "/usr/lib/python3.6/site-packages/pymysql/connections.py", line 1037, in _read_bytes
    CR.CR_SERVER_LOST, "Lost connection to MySQL server during query")
pymysql.err.OperationalError: (2013, 'Lost connection to MySQL server during query')
```

[zardilior]

Please check it, its a fix to Nonetype object has no attribute autocommit when connection becomes null
@sdispater. A constant problem in production

[zardilior]

@sdispater there is a pr with a fix for mysql. Should be accepted or at least checked Thanks

[xargsgrep]

@sdispater any updates on this? we would like to see this fix in the next release also.

[zardilior]

@sdispater don't wait for the release this is necesary

[zhanghaofei]

@sdispater @josephmancuso Urgent need to update,Thanks.
The authors no longer maintain this project?

[zardilior]

@sdispater doesn't

[josephmancuso]

Does this fix the issue everyone is having sufficiently?

[zardilior]

I patched a local version of orator and it totally did @josephmancuso

[josephmancuso]

merged

[zehauser]

@josephmancuso thank you very much for merging this fix. Could you please cut and publish a new release when you have time?

This patch is what will allow my company to move off our internal fork (😬) and back to a mainline Orator release.

[josephmancuso]

@zehauser I do not have permissions to release and it work with the CI tool @sdispater has setup.

[zehauser]

@josephmancuso Can we plead to @sdispater to cut a release when he has time? 🙂

[josephmancuso]

@zehauser I reached out directly to him. Waiting for a reply

[zardilior]

@josephmancuso how long since he last answered you? Seems he is really absent

[josephmancuso]

[zardilior]

Thanks a lot joseph

[zehauser]

😢