Jay Pipes <jaypi...@gmail.com> wrote on 04/29/2014 02:26:42 PM:
> From: Jay Pipes <jaypi...@gmail.com>
> To: openstack-dev@lists.openstack.org,
> Date: 04/29/2014 02:27 PM
> Subject: Re: [openstack-dev] [Cinder] cinder not support query
> volume/snapshot with regular expression
>
> On 04/29/2014 02:16 AM, Zhangleiqiang (Trump) wrote:
> > Currently, Nova API achieve this feature based on the database’s REGEX
> > support. Do you have advice on alternative way to achieve it?
>
> Hi Trump,
>
> Unfortunately, REGEXP support in databases is almost always ridiculously
> slow compared to prefix searches (WHERE col LIKE 'foo%').
>
> Lately, I've been considering that a true tagging system for Nova would
> allow for better-performing and more user-friendly search/winnow
> functions in the Nova API. I'll post a blueprint specification for this
> and hopefully have some time to implement in Juno...
Jay,
I am interested in this design, please add me as a reviewer when the
blueprint is created.
Thanks!
Steven Kaufer
>
> Best,
> -jay
>
> > zhangleiqiang (Trump)
> >
> > Best Regards
> >
> > *From:*laserjetyang [mailto:laserjety...@gmail.com]
> > *Sent:* Tuesday, April 29, 2014 1:49 PM
> > *To:* OpenStack Development Mailing List (not for usage questions)
> > *Subject:* Re: [openstack-dev] [Cinder] cinder not support query
> > volume/snapshot with regular expression
> >
> > It looks to me the Nova API will be dangerous source of DoS attacks due
> > to the regexp?
> >
> > On Mon, Apr 28, 2014 at 7:04 PM, Duncan Thomas <duncan.tho...@gmail.com
> > <mailto:duncan.tho...@gmail.com>> wrote:
> >
> > Regex matching in APIs can be a dangerous source of DoS attacks - see
> > http://en.wikipedia.org/wiki/ReDoS. Unless this is mitigated sensibly,
> > I will continue to resist any cinder patch that adds them.
> >
> > Glob matches might be safer?
> >
> >
> > On 26 April 2014 05:02, Zhangleiqiang (Trump) <zhangleiqi...@huawei.com
> > <mailto:zhangleiqi...@huawei.com>> wrote:
> >> Hi, all:
> >>
> >> I see Nova allows search instances by name, ip and ip6
> fields which can be normal string and regular expression:
> >>
> >> [stack@leiqzhang-stack cinder]$ nova help list
> >>
> >> List active servers.
> >>
> >> Optional arguments:
> >> --ip <ip-regexp> Search with regular
> expression match by IP address
> >> (Admin only).
> >> --ip6 <ip6-regexp> Search with regular
> expression match by IPv6 address
> >> (Admin only).
> >> --name <name-regexp> Search with regular
> expression match by name
> >> --instance-name <name-regexp> Search with regular
> expression match by server name
> >> (Admin only).
> >>
> >> I think it is also needed for Cinder when query the
> volume/snapshot/backup by name. Any advice?
> >>
> >> ----------
> >> zhangleiqiang (Trump)
> >>
> >> Best Regards
> >>
> >>
> >> _______________________________________________
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<mailto:OpenStack-dev@lists.openstack.org>
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> >
> >
> > --
> > Duncan Thomas
> >
> >
> > _______________________________________________
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> >
> >
> >
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