[Capistrano] Re: custom SCM

[Jamis Buck]

cap isn't like Rails, with the magic auto-loading. You need to manually require the base class:

  require 'capistrano/recipes/deploy/scm/base'

- Jamis

On Oct 24, 2007, at 9:19 AM, Chuck Remes wrote:

I checked through the list archives I see that capistrano requires
the usage of a "real" SCM. I have a very specific requirement where I
need to deploy the contents of a directory to a set of servers. Based
on the advice given in those earlier threads, I am writing a custom
SCM to mimic a "cp" so I can leverage the existing code in the
framework to handle the remainder of the deployment.

However, I am having a problem getting my custom class to load. For
the sake of simplicity early on, I am putting the code into ~/.caprc.

The approach I took is I subclassed Capistrano::Deploy::SCM::Base and
overrode the +checkout+ method. When I run 'cap -T' just to verify
capistrano is still working, I get a NameError. Here it is:

/Users/cremes/.caprc:8:in `load': uninitialized constant #<Class:
0x14b55f4>::Capistrano::Deploy::SCM::Base (NameError)
         from /Users/cremes/lib/ruby/gems/1.8/gems/capistrano-2.1.0/
lib/capistrano/configuration/loading.rb:173:in `load_from_file'
         from /Users/cremes/lib/ruby/gems/1.8/gems/capistrano-2.1.0/
lib/capistrano/configuration/loading.rb:89:in `load'
         from /Users/cremes/lib/ruby/gems/1.8/gems/capistrano-2.1.0/
lib/capistrano/configuration/loading.rb:86:in `load'
         from /Users/cremes/lib/ruby/gems/1.8/gems/capistrano-2.1.0/
lib/capistrano/configuration/loading.rb:86:in `each'
         from /Users/cremes/lib/ruby/gems/1.8/gems/capistrano-2.1.0/
lib/capistrano/configuration/loading.rb:86:in `load'
         from /Users/cremes/lib/ruby/gems/1.8/gems/capistrano-2.1.0/
lib/capistrano/cli/execute.rb:60:in `load_recipes'
         from /Users/cremes/lib/ruby/gems/1.8/gems/capistrano-2.1.0/
lib/capistrano/cli/execute.rb:28:in `execute!'
         from /Users/cremes/lib/ruby/gems/1.8/gems/capistrano-2.1.0/
lib/capistrano/cli/execute.rb:14:in `execute'
         from /Users/cremes/lib/ruby/gems/1.8/gems/capistrano-2.1.0/
bin/cap:4
         from /Users/cremes/bin/cap:16:in `load'
         from /Users/cremes/bin/cap:16

Here is the code it is complaining about (the entire contents
of .caprc):

module Capistrano
   module Deploy
     module SCM

       # Implements the Capistrano SCM interface for using a plain old
       # directory to do deployment. It fakes out all the usual SCM
commands
       # so we can use the other infrastructure to copy & deploy a
tarball
       class Directory < Base
         # Sets the default command name for this SCM. Users may
override this
         # by setting the :scm_command variable.
         default_command "cp"

         # Returns the command that will check out the given revision
to the
         # given destination.
         def checkout(revision, destination)
           switches = '-Rp'
           scm :cp, verbose, switches, repository, destination
         end

       end
     end #SCM
   end #Deploy
end #Capistrano

I know I am getting this because of a file load ordering issue, but I
don't know where I should place this code. What is the recommended
approach for creating custom SCMs?

Environment:
OSX 10.4.10
ruby 1.8.6 from macports
capistrano-2.1.0 gem

--~--~---------~--~----~------------~-------~--~----~

To unsubscribe from this group, send email to capistrano- [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/ group/capistrano

-~----------~----~----~----~------~----~------~--~---

smime.p7s
Description: S/MIME cryptographic signature