Object dereference feature in the QMF Console API
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Key: QPID-1350
URL: https://issues.apache.org/jira/browse/QPID-1350
Project: Qpid
Issue Type: New Feature
Components: C++ Broker, Python Client
Affects Versions: M4
Reporter: Ted Ross
Assignee: Ted Ross
Priority: Minor
Fix For: M4
This new feature lets users of the Python QMF API easily follow references in
objects.
For example:
Start a QMF console session and connect to the broker on the local host:
>>> s = Session()
>>> b = s.addBroker()
Get the first in the list of queue objects:
>>> queue = s.getObjects(_class="queue")[0]
Look at the queue's properties:
>>> queue.getProperties()
[(vhostRef, 0-0-1-0-1152921504606846979), (name,
'reply-kids-pc.localdomain.19302'), (durable, False), (autoDelete, True),
(exclusive, True), (arguments, {})]
Note that the vhostRef is an objectId. Now there's a very easy way to get the
referenced vhost object:
>>> vhost = queue.vhostRef
>>> vhost.getProperties()
[(brokerRef, 0-0-1-0-1152921504606846978), (name, '/')]
Likewise, we can get the broker object:
>>> queue.vhostRef.brokerRef.getProperties()
[(systemRef, 0-0-1-0-1152921504606846977), (port, 5672), (workerThreads, 5),
(maxConns, 500), (connBacklog, 10), (stagingThreshold, 5000000),
(mgmtPubInterval, 10), (version, '0.3'), (dataDir, '/home/ross/.qpidd')]
Or even invoke a method on the broker:
>>> queue.vhostRef.brokerRef.echo(1,"text")
OK (0) - {'body': u'text', 'sequence': 1}
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