rgw: admin rest api shouldn't return error when getting user's stats if the user hasn't create any bucket.

[zhangsw]

If users haven't create any bucket, get_user_stats will return -ENOENT. And the admin rest api will return NoSuchKey which is confusing.

Signed-off-by: Zhang Shaowen zhangshaowen@cmss.chinamobile.com

[joke-lee]

&&

[joke-lee]

new create user without create any bucket

< GET /admin/user?info&uid=test2testa&format=json HTTP/1.1
< Host: 127.0.0.1:80
< Accept-Encoding: gzip, deflate
< Accept: */*
< User-Agent: python-requests/2.6.0 CPython/2.7.5 Linux/3.10.0-327.el7.x86_64
< Connection: keep-alive
< date: Fri, 20 Apr 2018 08:15:54 GMT
< Authorization: AWS admin:ejN0kC+NB13+dsg5Y2Xa7KIPk9w=
<

> HTTP/1.1 200 OK
> date: Fri, 20 Apr 2018 08:15:54 GMT
> content-length: 270
> x-amz-request-id: tx00000000000000000002a-005ad9a1ba-121f0-default
> connection: Keep-Alive
>

with get stats

< GET /admin/user?info&uid=test2testa&stats=True&format=json HTTP/1.1
< Host: 127.0.0.1:80
< Accept-Encoding: gzip, deflate
< Accept: */*
< User-Agent: python-requests/2.6.0 CPython/2.7.5 Linux/3.10.0-327.el7.x86_64
< Connection: keep-alive
< date: Fri, 20 Apr 2018 08:16:11 GMT
< Authorization: AWS admin:JMLnVZU8+TGWVI140BPD0+/+NuU=
<

> HTTP/1.1 404 Not Found
> content-length: 116
> accept-ranges: bytes
> connection: Keep-Alive
> x-amz-request-id: tx00000000000000000002c-005ad9a1cb-121f0-default
> date: Fri, 20 Apr 2018 08:16:11 GMT
> content-type: application/json
>
{"Code":"NoSuchKey","RequestId":"tx00000000000000000002c-005ad9a1cb-121f0-default","HostId":"121f0-default-default"}

[cbodley]

looks good @zhangsw @joke-lee, can you please add a tracker issue so we can backport to luminous?

[joke-lee]

http://tracker.ceph.com/issues/23821

[cbodley]

tested in http://pulpito.ceph.com/cbodley-2018-04-24_16:16:24-rgw-wip-cbodley-testing-distro-basic-smithi/ and reran in http://pulpito.ceph.com/cbodley-2018-04-24_22:46:52-rgw-wip-cbodley-testing-distro-basic-smithi/ with a fix for valgrind leaks