Re: [PATCH] pg_sleep(interval) - Mailing list pgsql-hackers

From Julien Rouhaud
Subject Re: [PATCH] pg_sleep(interval)
Date
Msg-id CAOBaU_Z1breqyHphXUvSegnXm2seRdgJz_v_aGeCN0EjeORQzg@mail.gmail.com
Whole thread Raw
In response to Re: [PATCH] pg_sleep(interval)  (Vik Fearing <vik.fearing@dalibo.com>)
Responses Re: [PATCH] pg_sleep(interval)  (Robert Haas <robertmhaas@gmail.com>)
List pgsql-hackers
Hi

It seems like pg_sleep_until() has issues if used within a transaction, as it uses now() and not clock_timestamp(). Please find attached a patch that solves this issue.

For consistency reasons, I also modified pg_sleep_for() to also use clock_timestamp.

Regards


On Fri, Jan 31, 2014 at 2:12 AM, Vik Fearing <vik.fearing@dalibo.com> wrote:
On 01/30/2014 09:48 PM, Robert Haas wrote:
> On Thu, Oct 17, 2013 at 9:11 AM, Vik Fearing <vik.fearing@dalibo.com> wrote:
>> On 10/17/2013 02:42 PM, Robert Haas wrote:
>>> On Thu, Oct 17, 2013 at 8:26 AM, Vik Fearing <vik.fearing@dalibo.com> wrote:
>>>> On 10/17/2013 10:03 AM, Fabien COELHO wrote:
>>>>> My guess is that it won't be committed if there is a single "but it
>>>>> might break one code or surprise one user somewhere in the universe",
>>>>> but I wish I'll be proven wrong. IMO, "returned with feedback" on a 1
>>>>> liner is really akin to "rejected".
>>>> I have attached here an entirely new patch (new documentation and
>>>> everything) that should please everyone.  It no longer overloads
>>>> pg_sleep(double precision) but instead add two new functions:
>>>>
>>>>  * pg_sleep_for(interval)
>>>>  * pg_sleep_until(timestamp with time zone)
>>>>
>>>> Because it's no longer overloading the original pg_sleep, Robert's
>>>> ambiguity objection is no more.
>>>>
>>>> Also, I like how it reads aloud: SELECT pg_sleep_for('5 minutes');
>>>>
>>>> If people like this, I'll reject the current patch and add this one to
>>>> the next commitfest.
>>> I find that naming relatively elegant.  However, you've got to
>>> schema-qualify every function and operator used in the definitions, or
>>> you're creating a search-path security vulnerability.
>>>
>> Good catch.  Updated patch attached.
> Committed.

Thanks!

--
Vik



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