[openstack-dev] [all] cross project communication: Return request-id to caller

Kekane, Abhishek Abhishek.Kekane at nttdata.com
Fri Jul 24 06:33:00 UTC 2015

Hi Devs,

X-Openstack-Request-Id. We have analysed python-cinderclient, python-glanceclient, python-novaclient, python-keystoneclient and python-neutronclient to check the return types.

There are 9 ways return values are returned from python clients:
1. List
2. Dict
3. Resource class object
4. None
5. Tuple
6. Exception
7. Boolean (True/False, for keystoneclient)
8. Generator (for list api's in glanceclient)
9. String (for novaclient)

Out of 9 we have solution for all return types except generator.
In case of glance-client list api's are returning generator which is immutable. So it is not possible to return request-id in this case, which is a blocker for adopting the solution.

I have added detail analysis for above return types in etherpad [2] as solution #3.

If you have any suggestion in case of generation type then please let me know.

[1] http://eavesdrop.openstack.org/meetings/crossproject/2015/crossproject.2015-07-07-21.01.log.html
[2] https://etherpad.openstack.org/p/request-id

Thanks & Best Regards,

Abhishek Kekane

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