Backgroundrb devel - Nov 2006 - Passing object into results - "can''t convert DRb::DRbUnknown into Hash - (TypeError)"

Hi,

I''m using backgroundrb to get RSS feeds and pass them back to the
controller. I''m using the Ruby RSS library to parse the feed, which
returns
an RSS object. After that I pass the object into the results hash, but
that''s when this error occurs. Basically, this is what I have:

rss = RSS::Parser.parse(response.body)
results[:feed] = rss  # error!

20061120-15:46:19 (16250)
(drbunix:///tmp/backgroundrb.16249/backgroundrb_results_0)
/Users/guest/workspace/project_nano/vendor/plugins/backgroundrb/server/lib/backgroundrb/worker.rb:101:in
`merge!''
20061120-15:46:19 (16250)
(drbunix:///tmp/backgroundrb.16249/backgroundrb_results_0)
/Users/guest/workspace/project_nano/vendor/plugins/backgroundrb/server/lib/backgroundrb/worker.rb:101:in
`set_result''

Any ideas?

Thank you,
David
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* David Lee (davidjy.lee at gmail.com) [061120 15:45]:
>    Hi,
> 
>    I''m using backgroundrb to get RSS feeds and pass them back to
the
>    controller. I''m using the Ruby RSS library to parse the feed,
which
>    returns an RSS object. After that I pass the object into the results
hash,
>    but that''s when this error occurs. Basically, this is what I
have:
> 
>    rss = RSS::Parser.parse(response.body)
>    results[:feed] = rss  # error!
> 
>    20061120-15:46:19 (16250)
>    (drbunix:///tmp/backgroundrb.16249/backgroundrb_results_0)
>   
/Users/guest/workspace/project_nano/vendor/plugins/backgroundrb/server/lib/backgroundrb/worker.rb:101:in
>    `merge!''
>    20061120-15:46:19 (16250)
>    (drbunix:///tmp/backgroundrb.16249/backgroundrb_results_0)
>   
/Users/guest/workspace/project_nano/vendor/plugins/backgroundrb/server/lib/backgroundrb/worker.rb:101:in
>    `set_result''
> 
>    Any ideas?
it would seem like parse returns data that is not serializable over DRb
from the perspective of the results worker.

I need to think a little bit how to go about with this. I don''t think
we
want the results worker to load all possible libraries that the workers
are using. In this case, if we just add  require ''rss'' to the
results
worker it will work.

Then if you run from the console, you would also have to add a require
''rss'' to display the data properly.

I''ve captured a simple case in:
http://backgroundrb.devjavu.com/projects/backgroundrb/changeset/158

/skaar


-- 
----------------------------------------------------------------------
|\|\             where in the       |          s_u_b_s_t_r_u_c_t_i_o_n 
| | >===========  W.A.S.T.E.        |                  genarratologies 
|/|/    (_)     is the wisdom       |                  skaar at waste.org
----------------------------------------------------------------------

skaar,

Thank you. That works :)



On 11/20/06, skaar <skaar at waste.org> wrote:
>
> * David Lee (davidjy.lee at gmail.com) [061120 15:45]:
> >    Hi,
> >
> >    I''m using backgroundrb to get RSS feeds and pass them back
to the
> >    controller. I''m using the Ruby RSS library to parse the
feed, which
> >    returns an RSS object. After that I pass the object into the
results
> hash,
> >    but that''s when this error occurs. Basically, this is what
I have:
> >
> >    rss = RSS::Parser.parse(response.body)
> >    results[:feed] = rss  # error!
> >
> >    20061120-15:46:19 (16250)
> >    (drbunix:///tmp/backgroundrb.16249/backgroundrb_results_0)
>
> >   
/Users/guest/workspace/project_nano/vendor/plugins/backgroundrb/server/lib/backgroundrb/worker.rb:101:in
> >    `merge!''
> >    20061120-15:46:19 (16250)
> >    (drbunix:///tmp/backgroundrb.16249/backgroundrb_results_0)
>
> >   
/Users/guest/workspace/project_nano/vendor/plugins/backgroundrb/server/lib/backgroundrb/worker.rb:101:in
> >    `set_result''
> >
> >    Any ideas?
>
> it would seem like parse returns data that is not serializable over DRb
> from the perspective of the results worker.
>
> I need to think a little bit how to go about with this. I don''t
think we
> want the results worker to load all possible libraries that the workers
> are using. In this case, if we just add  require ''rss'' to
the results
> worker it will work.
>
> Then if you run from the console, you would also have to add a require
> ''rss'' to display the data properly.
>
> I''ve captured a simple case in:
> http://backgroundrb.devjavu.com/projects/backgroundrb/changeset/158
>
> /skaar
>
>
> --
> ----------------------------------------------------------------------
> |\|\             where in the       |          s_u_b_s_t_r_u_c_t_i_o_n
> | | >===========  W.A.S.T.E.        |                  genarratologies
> |/|/    (_)     is the wisdom       |                  skaar at waste.org
> ----------------------------------------------------------------------
>
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