[jira] [Commented] (PROTON-2069) Can't create queue from python

["Robbie Gemmell (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PROTON-2069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16868398#comment-16868398 ] 

Robbie Gemmell commented on PROTON-2069:
----------------------------------------

In general, please use the mailing lists for questions: [https://qpid.apache.org/discussion.html#mailing-lists.] There are more folks there who could possibly answer, and a lot less noise from issue traffic to drown out questions.

 

The documentation you link to from the broker docs is actually not for Proton's python binding as you described/understood, but is rather for the old 'qpid-python' client for AMQP 0-10.

The old 'addr format' strings used in those examples is not used by Proton (or the AMQP 1.0 Qpid JMS client) since it is largely reliant on AMQP 0-x protocol functionality specific to its hard-defined 'broker model' and related commands. AMQP 1.0 is more of a peer to peer protocol and does not enforce a broker model in the same fashion (allowing things like Dispatch router and other thigns to be done in addition to client-broker setups) nor does it define much in way of related methods/commands for creating queues etc. There is a layered management spec in progress, and the cpp broker has its own existing scheme of management through use of messages.

You will either need to use management tools (or formulate management messages yourself to similar effect, e.g see for[1] some different examples of that, albeit in C++) to create your queues, or alternatively the broker can be configured to auto-create things based on address policies (e.g --queue-patterns queue.* to create queues for addresses starting queue), though I've not used it for something like the above before. Again, the users list can probably ofer more assistant here than I can.

[1] [http://qpid.2158936.n2.nabble.com/Client-to-broker-connection-status-using-C-API-td7680160.html]

> Can't create queue from python
> ------------------------------
>
>                 Key: PROTON-2069
>                 URL: https://issues.apache.org/jira/browse/PROTON-2069
>             Project: Qpid Proton
>          Issue Type: Bug
>          Components: python-binding
>    Affects Versions: proton-c-0.28.0
>         Environment: Python 3.7, python-qpid-proton==0.28.0
> qpidd -v 1.39
>            Reporter: Matthias Brandt
>            Priority: Major
>
> According to the [proton c++ documentation|https://qpid.apache.org/releases/qpid-cpp-1.39.0/messaging-api/book/Message-Groups-Guide.html#idm140612067785264] one should be able to create a queue (in this case a group queue) like this:
> sender = connection.session().sender("msg-group-q;" +
>                                      " \{create:always, delete:receiver," +
>                                      " node: {x-declare: {arguments:" +
>                                      " {'qpid.group_header_key':'THE-GROUP'," +
>                                      " 'qpid.shared_msg_group':1}}}}")
>  
> Expected behaviour:
>  * A queue with the name msg-group-q is created on broker side
>  * A sender with the address msg-group-q is created on client side
> Actual behaviour:
>  * No queue is created
>  * A sender with the name of the complete string and no address is created.
> Is more information needed?



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