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https://issues.apache.org/jira/browse/PROTON-2186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17079434#comment-17079434
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Jiri Daněk commented on PROTON-2186:
------------------------------------
Aha, got it. The above was for PROTON-2180.
Here it is
https://github.com/rh-messaging/qdr-shipshape/blob/c74ec25c6f1a2055ee679da4117fe9f6144e4290/clients/python/basic.sender.py#L70-L84
{code:python}
def on_released(self, event):
# this is to prevent an issue we faced with two on_released
# calls happening for same delivery tag
# related proton frames below:
#
# [0x562a0083ed80]:0 <- @disposition(21) [role=true, first=981,
state=@released(38) []]
# [0x562a0083ed80]:0 <- @disposition(21) [role=true, first=981,
last=982, settled=true, state=@released(38) []]
#
# in the sample above, the on_released was invoked 3 times for: 981,
981 and 982.
if event.delivery.tag in self._released_tags:
return
self._released_tags.append(event.delivery.tag)
logging.debug("message released: %s" % event.delivery.tag)
self.result_data.released += 1
self.send(event, 'on_released')
{code}
> On released callback invoked twice for same delivery tag
> --------------------------------------------------------
>
> Key: PROTON-2186
> URL: https://issues.apache.org/jira/browse/PROTON-2186
> Project: Qpid Proton
> Issue Type: Bug
> Components: python-binding
> Reporter: Fernando Giorgetti
> Priority: Major
>
> In a python client application, that is connected to a dispatch router, I
> have observed that the on_released callback was invoked twice for the same
> delivery tag.
> Here are the disposition frames I was able to capture for the respective
> delivery:
> {noformat}
> [0x562a0083ed80]:0 <- @disposition(21) [role=true, first=981,
> state=@released(38) []]
> [0x562a0083ed80]:0 <- @disposition(21) [role=true, first=981, last=982,
> settled=true, state=@released(38) []]{noformat}
> The delivery tag 981 came first without the settlement and next with the
> settled as true. And the on_released was called twice for the 981 delivery
> tag.
>
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