Details
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Bug
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Status: Resolved
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Major
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Resolution: Fixed
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3.0.0
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None
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Python library 3.0.0
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1
Description
Old Python library supported a way to authenticate when there were arbitrary bucket names. When there is only bucket 'bucket-name', I can still use this with version 2.5
>>> from couchbase.cluster import Cluster, PasswordAuthenticator
>>> cluster = Cluster('couchbase://localhost')
>>> cluster.authenticate(PasswordAuthenticator('username', 'password'))
>>> bucket = cluster.open_bucket('bucket-name')
That works perfectly fine.
However, when I try the example from version 3.0
>>> from couchbase.cluster import Cluster, PasswordAuthenticator, ClusterOptions
>>> from couchbase.auth import PasswordAuthenticator
>>> cluster = Cluster('couchbase://localhost', ClusterOptions(PasswordAuthenticator('username', 'password')))
>>> bucket = cluster.bucket('bucket-name')
>>> collection = bucket.default_collection()
it fails on line with Cluster() and URI. It tries to connect to bucket "default" based on couchbase/management/admin.py:87. Its caller in couchbase/cluster.py:518 doesn't allow specification of the bucket. That is called from couchbase/cluster.py:533.
Request: please add a way to connect when there is no "default" bucket.
Attachments
Activity
Hi, thanks for the quick reply. I had the latest version from pip, ie. 3.0.0.
The issue is certainly present in current master and I tried to describe the steps to get to it.
Stacktrace is here:
Traceback (most recent call last):
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File "/home/ubuntu/test.py", line 31, in get_cb
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cb = cluster.bucket(bucket)
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File "/home/ubuntu/.local/lib/python3.6/site-packages/couchbase/cluster.py", line 480, in bucket
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return self._cluster.open_bucket(name, admin=self._admin)
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File "/home/ubuntu/.local/lib/python3.6/site-packages/couchbase/cluster.py", line 465, in _admin
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self.__admin = Admin(connection_string=str(self.connstr), **self._adminopts)
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File "/home/ubuntu/.local/lib/python3.6/site-packages/couchbase/management/admin.py", line 101, in __init__
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self._connect()
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couchbase.exceptions.BucketNotFoundException: <RC=0xD2[LCB_ERR_BUCKET_NOT_FOUND (210)], There was a problem while trying to send/receive your request over the network. This may be a result of a bad network or a misconfigured client or server, C Source=(src/bucket.c,1209)>
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Note that the referenced bucket does exist. As I mentioned, the important point is execution of couchbase/management/admin.py and its line 87, that sets the default bucket, that doesn't exist. If it could find the bucket somehow, it could end with better result.
Ah, thanks for the backtrace, I think I just spotted the issue (similar to the one we fixed before). Will produce a PR tomorrow for you to try.
Hi, this turned out to be quite a complex issue to fix while keeping our tests happy, but we have just merged a fix for this to the master, which is installable from git via:
pip install git+http://github.com/couchbase-python-client.git |
(from http://review.couchbase.org/c/couchbase-python-client/+/127641 )
Note that this requires a bucket to be opened prior to performing Admin operations on <6.5 clusters, just this bucket can have any name. We may refine this later for <6.5 clusters where possible. Please try this and let us know how you get on, thanks!
Hi this sounds like an issue that we fixed a week or two ago, and should be in 3.0.0 (non-beta). Please could you send the stack trace and details of the version installed?