No, I can't tell you. First, because it has nothing to do with the topic of
this message, seconds, because it is obvious it is GoogleGroups, and it is
simple enough to cancel the subscription, and third, because a simple google
search is enough to get very clear instructions.
Gee, this list needs some moderation.
Marcelo.
On Mon, Apr 5, 2010 at 10:47 PM, Todd Reeves <todd.ree...@yahoo.com> wrote:
> Hello.. Can anyone tell me how to get off this mailing list?
>
> ------------------------------
> *From:* Marcelo de Moraes Serpa <celose...@gmail.com>
> *To:* rubyonrails-talk@googlegroups.com
> *Sent:* Mon, April 5, 2010 5:06:50 PM
> *Subject:* [Rails] SystemTimer failing
>
> Hello list,
>
> I have searched everywhere else, tesed extensively and came to a point
> where I do not have a clue on what is happening.
>
> I am using SystemTimer and Ruby/LDAP in my Rails application. Ruby/LDAP to
> authenticate against a LDAP server and SystemTimer in an effort to avoid
> potential long hangs.
>
> Fact #1: SystemTimer works fine with the LDAP::Conn#bind method. It does
> cut at the right time if it fails. However, for some unknowing mystic
> reason, it just will not work with LDAP::Conn#search2.
>
> The code I am using:
>
> begin
> arr = SystemTimer.timeout_after(5.seconds) do
> connection.bind(self.bind_dn,self.password)
> connection.search2(self.base_dn,1,"(& (userPassword=#{password})
> (mail=#{email}))",nil,false,5,5000)
> end
> rescue Exception => e
> msg = 'LDAP server error.'
> logger.error(logger_msg_template.call("#{msg} - Exception:
> #{e.message}"))
> raise Timeout::Error.new(msg)
> end
>
> So, if bind takes more than 5 seconds, timeout will throw the correctly
> after 5 seconds. Good. If bind works, we then proceed to the search2 call.
> Things get sensitive here. If for any reason the search2 delays too much,
> the process is bound to just hang and wait for it's return. Often it happens
> because the query is wrong (an attribute doesn't exist in the LDAP entry,
> which might happen given the context of this code).
>
> SystemTimer *does* throw the Timeout::Error ("time's up!"), but it just
> doesn't kill the Thread after the seconds specfied in the
> timeout_after's param. Check out this request that I just made:
>
> ERROR: LDAP server error. - Exception: time's up! - USER: marc...@site.com,
> ACCOUNT: MyAccount, LDAP HOST: 89.150.80.164, PORT: 389.
> SQL (0.3ms) ROLLBACK
> Rendering template within layouts/application
> Rendering directory/index
> Completed in 34212ms (View: 19, DB: 7) | 200 OK [http://localhost/ldap]
>
> Check the first line, it is from Rails' logger. I also print the exception
> message, you can see that it was a "Time's up!" (from SystemTimer), but look
> at how long it took: almost 35 seconds.
>
> It is risky, since if many users are trying to setup a LDAP at the same
> time, our service could just hang completely.
>
> I'm really lost and really need some enlightenment here, any suggestion
> appreciated!
>
> Cheers,
>
> Marcelo.
>
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