Daniel Lucraft
2012-Nov-16 11:53 UTC
With streaming on, closed client connections cause Fatal Broken Pipe errors
Once we turned streaming on on www.songkick.com, we started getting these
errors on production quite a bit. (See below)
It appears that if the client closes the connection during the rendering of
the template, the next attempt to write a portion of the page to the
connection will fail with a Broken Pipe error, understandably. Rails
catches this and turns it into a ActionView::Template::Error.
So these are benign errors, but I''d like to stop them happening or
silence
them.
1. Where can we register a handler in Rails (3.2) to process template
errors?
2. Should the StreamingTemplateRenderer be catching these broken pipe
errors and suppressing them, perhaps with a "Request Aborted" log
line?
thanks
Dan
Error follows:
FATAL skweb( Rails::ActionController): ActionView::Template::Error
(Broken pipe):
44: <%= shared_component(''site_header'',
@page.site_header) %>
45: <%= shared_component(@page.site_navigation.component_name,
@page.site_navigation) %>
46: <div id="page">
47: <%= yield %>
48: </div>
49: <%= shared_component(''footer'', :static) %>
50: <!-- after footer -->
/home/dan/dev/skweb/vendor/bundle/ruby/1.9.1/gems/unicorn-4.3.1.2/lib/unicorn/http_response.rb:41:in
`write''
/home/dan/dev/skweb/vendor/bundle/ruby/1.9.1/gems/unicorn-4.3.1.2/lib/unicorn/http_response.rb:41:in
`block in http_response_write''
/home/dan/dev/skweb/vendor/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/lint.rb:523:in
`block in each''
/home/dan/dev/skweb/vendor/bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/chunked.rb:28:in
`block in each''
/home/dan/dev/skweb/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_view/buffers.rb:31:in
`call''
/home/dan/dev/skweb/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_view/buffers.rb:31:in
`safe_concat''
/home/dan/dev/skweb/app/views/layouts/application.html.erb:47:in
`_app_views_layouts_application_html_erb__3293108995857455051_100497760''
/home/dan/dev/skweb/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_view/template.rb:145:in
`block in render''
/home/dan/dev/skweb/vendor/bundle/ruby/1.9.1/gems/activesupport-3.2.8/lib/active_support/notifications.rb:125:in
`instrument''
/home/dan/dev/skweb/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_view/template.rb:143:in
`render''
/home/dan/dev/skweb/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.8/lib/action_view/renderer/streaming_template_renderer.rb:73:in
`block (2 levels) in delayed_render''
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