[QPID-3533] qpid-config does not properly set some options if value evaluates to False

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.12, 0.14
• Fix Version/s: 0.15
• Component/s: C++ Tools
• Labels: patch

Environment

Linux C++ broker with python 2.6

• Assignee: Nuno Santos
• Reporter: Brandon Pedersen
• Created: 08/Oct/11 19:17
• Updated: 29/Jul/13 18:53
• Resolved: 29/Nov/11 21:43

Description

PROBLEM STATEMENT:
Some options with the qpid-config tool ignore options which evaluate to False, most notably a value of 0. In my case I was trying to set the flow-stop-count to 0 as described here: http://qpid.apache.org/books/0.12/AMQP-Messaging-Broker-CPP-Book/html/ch01s09.html to disable the flow control.

STEPS TO REPRODUCE:

• Add a queue using the following options:
  qpid-config add queue myqueue --max-queue-count=5 --limit-policy=flow-to-disk --flow-stop-count=0
• Generate at least 5 messages that will go on myqueue

RESULTS:
Generating the 5th message will hang, waiting for the queue count to go less than 4

EXPECTED RESULTS:
Messages should continue to flow onto the queue (and be flushed to the disk)

COMMENTS:
The reason this happens is because the flow stop count is never set by qpid-config. There are several options that share the same issue in qpid-config. I created a patch that fixes this issue for me and will attach it.