[chef] Re: Re: Modifying LWRP call in library cookbook

[James Wilford < >]

 - Thanks Greg. I know that new_resource.name is definitely "myapp"
(actually its something else but changed for the purpose of this
discussion). And the path of the file I want to change is
"/etc/sv/myapp/run", so I would expect the template resource to be
called that. The code of the runit cookbook is very strange though -
https://github.com/opscode-cookbooks/runit/blob/master/libraries/provider_runit_service.rb
- so I can't easily tell from there what the template resource is
called.

I'm wondering if the problem is simply that the scope of the template
resource isn't visible to my wrapper cookbook, because its in the
runit provider, which in turn is called inside the application
provider?



On Tue, Sep 17, 2013 at 6:13 PM, Greg Symons 
<
 >
 wrote:
> It looks like your template probably is not named "/etc/sv/myapp/run".
> There's not really enough code there for me to tell what new_resource.name
> is in that scope, but that's what you need to search for. You also might
> want to try the chef-rewind gem for this... it wraps up the search and makes
> these kind of alterations look a little less ugly... but you still have to
> have the right name.
>
> Greg
>
>
> On 09/17/13 11:58, James Wilford wrote:
>>
>> Hi,
>>
>> I'm using the application_ruby cookbook to deploy a rails app. I'm
>> trying to get zero-downtime restarts working Unicorn and I found a
>> guide at https://gist.github.com/czarneckid/4639793 which seems to
>> work, but I need to use a custom runit template.
>>
>> When I call the application provider in my wrapper cookbook, this
>> creates a runit service:
>>
>> My wrapper:
>>
>> name = 'myapp'
>>
>> application name do
>>   (snip)
>>
>>    unicorn do
>>      restart_command do
>>        execute "/etc/init.d/#{name} restart" do
>>          user "root"
>>        end
>>      end
>>      worker_processes 2
>>      listen ({ "#{app_path}/shared/.unicorn.sock" => { :tcp_nodelay =>
>> true, :backlog => 100 }})
>>      pid    "#{app_path}/shared/pids/unicorn.pid"
>>      stderr_path "#{app_path}/shared/log/unicorn.stderr.log"
>>      stdout_path "#{app_path}/shared/log/unicorn.stdout.log"
>>      before_exec "ENV['BUNDLE_GEMFILE'] = \"#{app_path}/current/Gemfile\""
>>      before_fork before_fork
>>      after_fork  after_fork
>>    end
>> end
>>
>>
>> https://github.com/opscode-cookbooks/application_ruby/blob/master/providers/unicorn.rb:
>>
>>    runit_service new_resource.name do
>>      run_template_name 'unicorn'
>>      log_template_name 'unicorn'
>>      owner new_resource.owner if new_resource.owner
>>      group new_resource.group if new_resource.group
>>
>>      cookbook 'application_ruby'
>>      options(
>>        :app => new_resource,
>>        :bundler => new_resource.bundler,
>>        :bundle_command => new_resource.bundle_command,
>>        :rails_env => new_resource.environment_name,
>>        :smells_like_rack =>
>> ::File.exists?(::File.join(new_resource.path, "current", "config.ru"))
>>      )
>>    end
>>
>> I'd like to change the 'cookbook' line there to use my own cookbook,
>> so I can write a custom template. I tried changing the template
>> resource for the runit file:
>>
>> srv = resources("template[/etc/sv/myapp/run]")
>> srv.cookbook = 'my_cookbook'
>>
>> but I get "Cannot find a resource matching template[/etc/sv/myapp/run]
>> (did you define it first?)"
>>
>> Is it possible to do this or do I need to fork the application_ruby
>> cookbook?
>>
>> Thanks
>>
>> James
>
>