Camping list - Aug 2010 - Reloading in a standard config.ru rack app (Camping 2.0)

Dear Camping ninjas,

I''ve been using Camping via bin/camping and reloading works as expected
OK.

What I have not been able to do is to correctly setup a Camping app
with reloading support in a standard config.ru rack app.

Thanks for your attention

--Omar G?mez

-- 
Follow me at:
Twitter: http://twitter.com/omargomez
Buzz: http://www.google.com/profiles/108165850309051561506#buzz

?Hol? Se?or G?mez!

First of all: *Never* use the reloader in production. It''s sloooooow!
And because config.ru is mostly used for production, the reloader
isn''t enabled there.

Why do you want to use the reloader in config.ru instead of
bin/camping by the way? If you want custom middlewares, you can always
do it like this:

    module App
      user Middleware
    end

And you can change the server it uses by `camping -s thin`.

Anyway, if you want to use Camping::Reloader, you can do something like this:

    require ''camping''
    require ''camping/reloader''

    reloader = Camping::Reloader.new(''hello.rb'')
    reloader.on_reload do |app|
      app.create if app.respond_to?(:create)
    end

    app = proc do |env|
      # Reload (if needed) at every request:
      reloader.reload!

      # Returns a hash of the apps:
      apps = reloader.apps

      # Get the first app:
      apps.values.first.call(env)
      # If you have several apps, you probably want to
      # mount them on different paths instead.
    end

    run app

If you''re on *nix you can also use Shotgun
(http://github.com/rtomayko/shotgun):

    require ''camping''

    Shotgun.after_fork do
      Camping::Apps.each do |app|
        app.create if app.respond_to?(:create)
      end
    end

    require ''hello''
    run Hello

And run the app with: `shotgun config.ru`.

Shotgun spawns your app in each own process at *every* request, so
it''s like it''s automatically starting and stopping a server
between
each request. This means that it''s slower, but more
"correct".
Camping::Reloader keeps everything in the same process, and uses some
Ruby magic to automatically remove objects and load files again. It
work 90% of the times, but is faster (it only reloads when needed) and
it also works on Windows.

Good luck!

// Magnus Holm


2010/8/1 Omar G?mez <omar.gomez at gmail.com>:
> Dear Camping ninjas,
>
> I''ve been using Camping via bin/camping and reloading works as
expected OK.
>
> What I have not been able to do is to correctly setup a Camping app
> with reloading support in a standard config.ru rack app.
>
> Thanks for your attention
>
> --Omar G?mez
>
> --
> Follow me at:
> Twitter: http://twitter.com/omargomez
> Buzz: http://www.google.com/profiles/108165850309051561506#buzz
> _______________________________________________
> Camping-list mailing list
> Camping-list at rubyforge.org
> http://rubyforge.org/mailman/listinfo/camping-list
>

Hi Omar,

When I want to test using rackup instead of the Camping server I use the 
following config.ru assuming that myapp.rb has a MyApp module:

gem ''camping'' , ''>= 2.0''
%w(rack activerecord camping camping/session camping/reloader ).each { | 
r | require r}
reloader = Camping::Reloader.new(''myapp.rb'')
app = reloader.apps[:MyApp]
run app

And when I need to mount static content I also add the following 
statements _before _"run app":

use Rack::Reloader
use Rack::Static,
     :urls => [ ''/css'',
                     ''/css/images''
                     ''/images'',
                     ''/js'' ],
     :root => File.expand_path(File.dirname(__FILE__))

Note that this only meant for local testing or in your staging 
environment (for example if you need to make a quick change while 
troubleshooting an issue).

Philippe

On 7/31/2010 6:12 PM, Omar G?mez wrote:
> Dear Camping ninjas,
>
> I''ve been using Camping via bin/camping and reloading works as
expected OK.
>
> What I have not been able to do is to correctly setup a Camping app
> with reloading support in a standard config.ru rack app.
>
> Thanks for your attention
>
> --Omar G?mez
>
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Worked like a charm,

Thanks a lot!

On Sun, Aug 1, 2010 at 7:52 AM,  <camping-list-request at rubyforge.org>
wrote:
>
> Message: 8
> Date: Sun, 01 Aug 2010 06:51:52 -0600
> From: Philippe Monnet <ruby at monnet-usa.com>
> To: camping-list at rubyforge.org
> Subject: Re: Reloading in a standard config.ru rack app (Camping 2.0)
> Message-ID: <4C556DE8.3040105 at monnet-usa.com>
> Content-Type: text/plain; charset="iso-8859-1";
Format="flowed"
>
> ?Hi Omar,
>
> When I want to test using rackup instead of the Camping server I use the
> following config.ru assuming that myapp.rb has a MyApp module:
>
> gem ''camping'' , ''>= 2.0''
> %w(rack activerecord camping camping/session camping/reloader ).each { |
> r | require r}
> reloader = Camping::Reloader.new(''myapp.rb'')
> app = reloader.apps[:MyApp]
> run app
>
> And when I need to mount static content I also add the following
> statements _before _"run app":
>
> use Rack::Reloader
> use Rack::Static,
> ? ? :urls => [ ''/css'',
> ? ? ? ? ? ? ? ? ? ? ''/css/images''
> ? ? ? ? ? ? ? ? ? ? ''/images'',
> ? ? ? ? ? ? ? ? ? ? ''/js'' ],
> ? ? :root => File.expand_path(File.dirname(__FILE__))
>
> Note that this only meant for local testing or in your staging
> environment (for example if you need to make a quick change while
> troubleshooting an issue).
>
> Philippe
>
> On 7/31/2010 6:12 PM, Omar G?mez wrote:
>> Dear Camping ninjas,
>>
>> I''ve been using Camping via bin/camping and reloading works as
expected OK.
>>
>> What I have not been able to do is to correctly setup a Camping app
>> with reloading support in a standard config.ru rack app.
>>
>> Thanks for your attention
>>
>> --Omar G?mez
>>
>
-- 
Follow me at:
Twitter: http://twitter.com/omargomez
Buzz: http://www.google.com/profiles/108165850309051561506#buzz

On a somewhat related note. How do people handle static content in a
development environment? Is there a way to make the camping server
aware of the public/ directory and serve the files within it?

What about in production? Is passenger smart enough to pass requests
for files in public/ back to apache or is some further configuration
required?

Dave

2010/8/1 Omar G?mez <omar.gomez at gmail.com>:
> Worked like a charm,
>
> Thanks a lot!
>
> On Sun, Aug 1, 2010 at 7:52 AM, ?<camping-list-request at
rubyforge.org> wrote:
>>
>> Message: 8
>> Date: Sun, 01 Aug 2010 06:51:52 -0600
>> From: Philippe Monnet <ruby at monnet-usa.com>
>> To: camping-list at rubyforge.org
>> Subject: Re: Reloading in a standard config.ru rack app (Camping 2.0)
>> Message-ID: <4C556DE8.3040105 at monnet-usa.com>
>> Content-Type: text/plain; charset="iso-8859-1";
Format="flowed"
>>
>> ?Hi Omar,
>>
>> When I want to test using rackup instead of the Camping server I use
the
>> following config.ru assuming that myapp.rb has a MyApp module:
>>
>> gem ''camping'' , ''>= 2.0''
>> %w(rack activerecord camping camping/session camping/reloader ).each {
|
>> r | require r}
>> reloader = Camping::Reloader.new(''myapp.rb'')
>> app = reloader.apps[:MyApp]
>> run app
>>
>> And when I need to mount static content I also add the following
>> statements _before _"run app":
>>
>> use Rack::Reloader
>> use Rack::Static,
>> ? ? :urls => [ ''/css'',
>> ? ? ? ? ? ? ? ? ? ? ''/css/images''
>> ? ? ? ? ? ? ? ? ? ? ''/images'',
>> ? ? ? ? ? ? ? ? ? ? ''/js'' ],
>> ? ? :root => File.expand_path(File.dirname(__FILE__))
>>
>> Note that this only meant for local testing or in your staging
>> environment (for example if you need to make a quick change while
>> troubleshooting an issue).
>>
>> Philippe
>>
>> On 7/31/2010 6:12 PM, Omar G?mez wrote:
>>> Dear Camping ninjas,
>>>
>>> I''ve been using Camping via bin/camping and reloading
works as expected OK.
>>>
>>> What I have not been able to do is to correctly setup a Camping app
>>> with reloading support in a standard config.ru rack app.
>>>
>>> Thanks for your attention
>>>
>>> --Omar G?mez
>>>
>>
>
> --
> Follow me at:
> Twitter: http://twitter.com/omargomez
> Buzz: http://www.google.com/profiles/108165850309051561506#buzz
> _______________________________________________
> Camping-list mailing list
> Camping-list at rubyforge.org
> http://rubyforge.org/mailman/listinfo/camping-list
>


-- 
Dave

Hi!

On Mon, Aug 02, 2010 at 09:19:25AM -0400, David Susco
wrote:
> On a somewhat related note. How do people handle static content in a
> development environment? Is there a way to make the camping server
> aware of the public/ directory and serve the files within it?
> 
> What about in production? Is passenger smart enough to pass requests
> for files in public/ back to apache or is some further configuration
> required?
I think everyone uses some variant on the following controller:

 class StaticX
    MIME_TYPES = {''.css''  => ''text/css'',
                  ''.js''   =>
''text/javascript'',
                  ''.jpeg'' =>
''image/jpeg'',
                  ''.jpg''  =>
''image/jpeg'',
                  ''.png''  => ''image/png''}

    def get(path)
      @headers[''Content-Type''] = MIME_TYPES[path[/\.\w+$/, 0]]
|| "text/plain"
      unless path.include? ".."
        @headers[''X-Sendfile''] = (BASE_DIR + path).to_s
      else
        @status = "403"
        "403 - Invalid path"
      end
    end
  end

with declaring at top:  BASE_DIR = Pathname.new(__FILE__).dirname +
"public"

Given that passenger picks up Camping apps only if they have a
"public"
subdirectory and a config.ru, it might make sense to create a
camping/static library for serving static data with auto-mime-type
detection and ship this with Camping.  Serving static files seems to be
done often.  What do you guys think?

N.B. I had to install Apache with Passenger and the xsendfile module, but then
it worked out of the box.

Kind regards,
Paul

-- 
PhD Student @ Eindhoven                     | email: paul at luon.net
University of Technology, The Netherlands   | JID: paul at
luon.net
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