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https://issues.apache.org/jira/browse/THRIFT-5857?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jens Geyer resolved THRIFT-5857.
--------------------------------
Fix Version/s: 0.22.0
Assignee: Asjad
Resolution: Fixed
> Remove deprecated Tornado io_loop usage
> ---------------------------------------
>
> Key: THRIFT-5857
> URL: https://issues.apache.org/jira/browse/THRIFT-5857
> Project: Thrift
> Issue Type: Bug
> Components: Python - Library
> Affects Versions: 0.22.0
> Environment: Tornado 5+
> Definitely for Tornado 6.4.2 that I'm using
>
> Reporter: Asjad
> Assignee: Asjad
> Priority: Major
> Fix For: 0.22.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> As I mentioned in THRIFT-5024, there's still another issue that's preventing
> Thrift from working with newer versions of Tornado. We get this stack trace
> once the client is started:
> {code:java}
> ~/thrift$ cd tutorial/py.tornado/
> ~/thrift/tutorial/py.tornado$ python3 ./PythonServer.py
> Starting the server...
> Exception in callback functools.partial(<function
> TCPServer._handle_connection.<locals>.<lambda> at 0x7fb547e99360>, <Future
> finished exception=AttributeError("'TTornadoServer' object has no attribute
> 'io_loop'")>)
> Traceback (most recent call last):
> File "/home/asjad/.local/lib/python3.10/site-packages/tornado/ioloop.py",
> line 750, in _run_callback
> ret = callback()
> File
> "/home/asjad/.local/lib/python3.10/site-packages/tornado/tcpserver.py", line
> 387, in <lambda>
> gen.convert_yielded(future), lambda f: f.result()
> File "/home/asjad/.local/lib/python3.10/site-packages/tornado/gen.py", line
> 233, in wrapper
> yielded = ctx_run(next, result)
> File
> "/home/asjad/thrift/tutorial/py.tornado/../../lib/py/build/lib.linux-x86_64-3.10/thrift/TTornado.py",
> line 168, in handle_stream
> io_loop=self.io_loop)
> AttributeError: 'TTornadoServer' object has no attribute 'io_loop'{code}
> {code:java}
> ~/thrift$ cd tutorial/py.tornado/
> ~/thrift/tutorial/py.tornado$ python3 ./PythonClient.py{code}
>
> This bug appeared because {{TTornadoServer}} inherits from Tornado's
> {{tcpserver.TCPServer}} and is using its {{self.io_loop}} attribute, which
> [Tornado removed in
> v5.0|https://github.com/tornadoweb/tornado/blob/ad9652512ff6a7486ca5290b060e7272d1696a37/tornado/tcpserver.py#L120-L122],
> [as passing around {{io_loops}} is deprecated in favor of using
> {{IOLoop.current()}} to retrieve
> it|https://github.com/tornadoweb/tornado/commit/547e0f98d56bb8f22a89c009b6d2b3cf6b802284].
> I also touched the {{gen.with_timeout}} call as that signature also changed
> to remove {{{}io_loop{}}}:
> ([v4.5|https://www.tornadoweb.org/en/branch4.5/gen.html#tornado.gen.with_timeout]
> vs
> [v5.1|https://www.tornadoweb.org/en/branch5.1/gen.html#tornado.gen.with_timeout]).
> This was mentioned in the [Tornado 5.0 Release
> Notes|https://www.tornadoweb.org/en/stable/releases/v5.0.0.html].
>
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