Red Hat Bugzilla – Bug 587671
qpid python client (low level api) "Connection instance has no attribute 'spec'"
Last modified: 2015-11-15 20:12:25 EST
Created attachment 410489 [details] The testing client (functional on qpid 0.5 version) Description of problem: There is observed change in the python low level API between last stable (0.5 qpid release) and current (qpid 0.7 candidate) Python code snippet: if host is None: host = "localhost" self.sessionID = "rhts_%s.%d_%s_{%s}" % \ (os.uname()[1], os.getpid(), sid, str(time.localtime())) self.conn = Connection( connect(host, port), username=uname, password = passwd ) # starting connection with timeout self.conn.start(timeout=self.timeout) # creating session with timeout #self.session = self.conn.session(self.sessionID) self.session = self.conn.session(name=self.sessionID, timeout=self.timeout) >>self.mclient = managementClient(self.conn.spec) self.mchannel = self.mclient.addChannel(self.session) Causes following Attribute Error: Traceback (most recent call last): File "bz456272.py", line 125, in ? aq.append(AddQueue(i, quid[i])) File "bz456272.py", line 42, in __init__ self.mgr.Connect("localhost", 5672, sid=id) File "rhtslib_management.py", line 55, in Connect self.mclient = managementClient(self.conn.spec) AttributeError: Connection instance has no attribute 'spec' Questions: 1] Could you evaluate the change effect on existing code around (the world) and summarize that this change is intended, please? 2] Could you review whether release note will be necessary if change is intended, please? 3] Could you suggest workaround for existing application[s], please? Version-Release number of selected component (if applicable): python-qpid-0.7.934605-1.el5 qpid-cpp-client-0.7.935473-1.el5 qpid-cpp-client-devel-0.7.935473-1.el5 qpid-cpp-client-devel-docs-0.7.935473-1.el5 qpid-cpp-client-ssl-0.7.935473-1.el5 qpid-cpp-mrg-debuginfo-0.7.929717-1.el5 qpid-cpp-server-0.7.935473-1.el5 qpid-cpp-server-cluster-0.7.935473-1.el5 qpid-cpp-server-devel-0.7.935473-1.el5 qpid-cpp-server-ssl-0.7.935473-1.el5 qpid-cpp-server-store-0.7.935473-1.el5 qpid-cpp-server-xml-0.7.935473-1.el5 qpid-java-client-0.7.934605-1.el5 qpid-java-common-0.7.934605-1.el5 qpid-tools-0.7.934605-2.el5 How reproducible: 100% Steps to Reproduce: 1. run broker 2. launch the attached client against the broker 3. see the Attribute error Actual results: Client does not run, because of slight change in the API. Expected results: Client should run (modified or untouched depends on issue review done by devel). Additional info:
This is a deliberate change, you can't customize what spec is used anymore. I believe this should work if you simply don't pass the spec to managementClient, i.e. use managementClient() instead. We should definitely release note this.
I confirm that suggested change - self.mclient = managementClient(self.conn.spec) + self.mclient = managementClient() is currently working on RHEL 4.8 / 5.5 i386 / x86_64 on package set listed above. I'm keeping bug in it's state, presence of appropriate note in MRG release note is then enough to put in VERI, because as described in above post change is intended.
BZ raised for release note: https://bugzilla.redhat.com/show_bug.cgi?id=600256