[ensembl-dev] Proxying GeneTree

Youens-Clark, Ken kclark at cshl.edu
Tue Dec 18 21:57:16 GMT 2012


At Gramene, we are having a problem with using a ProxyPass directive to view our gene trees.  We have our own Apache server in front of our Ensembl server, and I am sending "/Multi/GeneTree(.*)" => "http://brie.cshl.org:8887/Multi/GeneTree".

I'm afraid you won't be able to view the 8887 server because of our firewall, but it works just fine.  However, this URL:

	http://dev.gramene.org/Multi/GeneTree?gt=EGGT00050000018973

Fails with the error:

	Sorry, the page request "/Multi/Component/GeneTree/Web/ComparaTree?gt=EGGT00050000018973;time=1355866894798.798" failed to load.

I've been hacking on the "EnsEMBL::Web::Controller" module to see if I can figure anything out.  What I notice is that there are two requests made for the GeneTree, once for the page and another for the Ajax call for the tree itself (?).  When it works (via 8887), I see this in the logs:

> page_type (Dynamic) hub (EnsEMBL::Web::Hub) type (GeneTree)
> hub type(GeneTree)
> module_name = EnsEMBL::Web::Configuration::GeneTree
> configuration=EnsEMBL::Web::Configuration::GeneTree
> error ()
> config = (EnsEMBL::Web::Configuration::GeneTree)
> 
> page_type (Component) hub (EnsEMBL::Web::Hub) type (GeneTree)
> hub type(GeneTree)
> module_name = EnsEMBL::Web::Configuration::GeneTree
> configuration=EnsEMBL::Web::Configuration::GeneTree
> error ()
> config = (EnsEMBL::Web::Configuration::GeneTree)

But when it fails, I see this:

> page_type (Dynamic) hub (EnsEMBL::Web::Hub) type (GeneTree)
> hub type(GeneTree)
> module_name = EnsEMBL::Web::Configuration::GeneTree
> configuration=EnsEMBL::Web::Configuration::GeneTree
> error ()
> config = (EnsEMBL::Web::Configuration::GeneTree)
> 
> page_type (Component) hub (EnsEMBL::Web::Hub) type ()
> config = ()
> [Tue Dec 18 16:52:40 2012] [error] [client 143.48.220.82] Can't call method "get_valid_action" on an undefined value at /usr/local/ensembl-live/modules/EnsEMBL/Web/Controller.pm line 201.\n, referer: http://dev.gramene.org/Multi/GeneTree?gt=EGGT00050000018973

On the 2nd request (the 2nd occurrence of "page_type"), there's no hub type, no config, etc., so the "get_valid_action" method fails here:

188 sub configure {
189   my $self          = shift;
190   my $hub           = $self->hub;
191   my $configuration = $self->configuration;
192   my $node          = $configuration->get_node($configuration->get_valid_action($self->action, $self->function));

Any suggestions on how to fix this?

--
Ken Youens-Clark
kclark at cshl.edu
Ware Lab/CSHL/USDA-ARS







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