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connection: fix logging of non-IP sockets - #279
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Before this fix, the debug log would crash _connect_socket for UNIX domain sockets. getsockname() for UNIX domain sockets returns a single string instead of a tuple (as is the case for IPv4/IPv6). Therefore the code could crash as it tried to get the second element of a non-tuple (empty string):
Traceback (most recent call last):
File "/home/margdoc/Workspace/scylla/maintenance_mode_testing.py", line 5, in <module>
s = c.connect()
^^^^^^^^^^^
File "cassandra/cluster.py", line 1750, in cassandra.cluster.Cluster.connect
File "cassandra/cluster.py", line 1776, in cassandra.cluster.Cluster.connect
File "cassandra/cluster.py", line 1763, in cassandra.cluster.Cluster.connect
File "cassandra/cluster.py", line 3581, in cassandra.cluster.ControlConnection.connect
File "cassandra/cluster.py", line 3642, in cassandra.cluster.ControlConnection._reconnect_internal
cassandra.cluster.NoHostAvailable: ('Unable to connect to any servers', {'test_socket': IndexError('string index out of range')})
Fix the issue by not unpacking those values and just printing them
as-is, relying on %s formatter to print all elements of a tuple (host,
port) for IP sockets and string for UNIX domain sockets. The printed log
is not formatted as nice as before, however this is a DEBUG print so few users will ever see it. The new approach should work with any format of getsockname().
Fixesscylladb#278mykaul
commented
Dec 8, 2023
Do we have tests for Unix sockets? |
constantfold
commented
Dec 8, 2023
Author
There is this test: https://github.com/scylladb/python-driver/blob/64e7fad42ec88dfc72c7f12c389c3ef6c3f392fb/tests/integration/advanced/test_unixsocketendpoint.py but it's not enabled. I'll check if this test works. |
Lorak-mmk
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Dec 9, 2023
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Before this fix, the debug log would crash
_connect_socketfor UNIX domain sockets.getsockname()for UNIX domain sockets returns a single string instead of a tuple (as is the case for IPv4/IPv6). Therefore the code could crash as it tried to get the second element of a non-tuple (empty string):Fix the issue by not unpacking those values and just printing them as-is, relying on
%sformatter to print all elements of a tuple (host, port) for IP sockets and string for UNIX domain sockets. The printed log is not formatted as nice as before, however this is aDEBUGprint so few users will ever see it. The new approach should work with any format ofgetsockname().Fixes#278