[Capistrano] Re: cannot reference stage in multistage deploy

[Jamis Buck]

Yeah, I see what's going on now. Unfortunately, the "stage" variable doesn't get set until you actually select the stage (by running e.g. "cap staging foo" or "cap production blah"). And since you have variables that reference :stage during the loading of the recipe, things blow up.

  set(:mongrel_conf) { "#{current_path}/config/mongrel_cluster.yml" }



- Jamis

On Apr 19, 2008, at 9:59 PM, Matt R wrote:

You'll need to make sure all of the variables that refer to :stage (either directly or indirectly) are loaded lazily. Specifically, note that referencing current_path causes deploy_to to be evaluated, which (in your case) also causes :application to be evaluated, which evaluates :stage. So, try putting :mongrel_conf in brackets: Note that if you have any other variables that reference mongrel_conf, you could still run into problems.

I modified the file to look like:
set :stages, %w(dev staging production)
set :default_stage, 'dev'

require 'capistrano/ext/multistage'
require 'railsmachine/recipes'

##############
### Global Rollout options
##############
....

and I still get the errors on the same line (although the line # is
bumped up a bit! ;))

Thanks for your help and making such a great tool!

--
Matt

On Apr 19, 11:53 pm, Jamis Buck <[EMAIL PROTECTED]> wrote:

Ah, yeah. That'll fail, because when the variable is evaluated, the
multistage code has not yet been loaded. Be sure to load the
multistage extension as early as possible (after
setting :default_stage, for instance), rather than throwing it at the
very end.

- Jamis

On Apr 19, 2008, at 9:50 PM, Matt R wrote:

I'm getting this error as well. If I modify the lines that use
#{stage} (so they don't error out) and plug in the task :show_stage,

eval set(:bar) {"#{stage}"} that they are not coming thru.

the correct stage is spit out. It's only when I'm using them in string

# each of the deploy/#{stage}.rb files look something like the
following:
production.rb
set :repos, "tags/current"
set :apache_proxy_port, 8000
set :apache_proxy_servers, 3

---------------------

##############
### Deploy.rb
##############
set :stages, %w(dev staging production)
set :default_stage, 'dev'

##############
### Global Rollout options
##############

set(:domain) {"#{stage}.foobar.com"} # <- this fails SECOND if the
application line is modified  (e.g. the deploy file is being parsed
bottom up somehow?)

set :app_name, "foobar"

# Lazily eval since we don't know this til runtime
set(:application) {"#{stage}.#{app_name}"} # this fails, undef var
stage

##############
### SVN Stuff
##############
set :deploy_via, :export

set :user, "deploy"
set :group, user

# The SVN repos is not in a subdomain location, so we need to capture

the "deploy root"
set :deploy_root,   "var/www/apps/#{app_name}"

# Target directory for the application on the web and app servers.
set(:deploy_to)  {"/#{deploy_root}/#{application}"}
set(:repository) {"svn+ssh://[EMAIL PROTECTED]/#{deploy_root}/repos/
#{repos}"}

##############
### Misc
##############
# This must be after deploy_to
set :mongrel_conf, "#{current_path}/config/mongrel_cluster.yml"

set :rails_env, "production"

#
=
=
=
=
=
=
=

# ROLES
#
=
=
=
=
=
=
=

role(:web) {domain}
role(:app) {domain}
role :db, domain, :primary => true
#doesn't work -> role(:db) {domain, :primary => true}
role(:scm) {domain}

= = ==================================================================== = = ====================================================================

#
=
=
=
=
=
=
=

# APACHE OPTIONS
#
=
=
=
=
=
=
=

set :apache_server_name, domain
#set :apache_server_aliases, %w{alias1 alias2}
set :apache_default_vhost, true # force use of
apache_default_vhost_config
set :apache_default_vhost_conf, "/etc/httpd/conf/default.conf"
set :apache_conf, "/etc/httpd/conf/apps/#{app_name}.conf"
set :apache_ctl, "/etc/init.d/httpd"
#set in staging files
#set :apache_proxy_port, 8000
#set :apache_proxy_servers, 2
set :apache_proxy_address, "127.0.0.1"
set :apache_ssl_enabled, false
set :apache_ssl_ip, "127.0.0.1"
set :apache_ssl_forward_all, false

= = ==================================================================== = = ====================================================================

#
=
=
=
=
=
=
=

# MONGREL OPTIONS
#
=
=
=
=
=
=
=

set(:mongrel_servers) {apache_proxy_servers}
set(:mongrel_port) {apache_proxy_port}
set :mongrel_address, apache_proxy_address
set :mongrel_environment, "production"

set(:mongrel_conf) {"/etc/mongrel_cluster/#{application}.conf"}
set :mongrel_user, user
set :mongrel_group, group

= = ==================================================================== = = ==================================================================== set(:mongrel_pid_file) {"/var/run/mongrel_cluster/ #{application}.pid"}

#
=
=
=
=
=
=
=

# CAPISTRANO OPTIONS
#
=
=
=
=
=
=
=

# default_run_options[:pty] = true
set :keep_releases, 3

= = ==================================================================== = = ====================================================================

require 'capistrano/ext/multistage'
require 'railsmachine/recipes'

On Apr 19, 11:02 pm, Jamis Buck <[EMAIL PROTECTED]> wrote:

Interesting, I can't duplicate this. If I add the following task to
my
deploy.rb:

   task :show_stage do
     puts(stage)
   end

and then invoke this:

   cap production show_stage

it correctly prints "production" to my terminal.

Are you sure you've got the staging stuff configured right?

- Jamis

On Apr 19, 2008, at 6:34 PM, J2M wrote:

I have a multistage setup with a production.rb & testing.rb under
config/deploy and have set up the deploy.rb according to
http://weblog.jamisbuck.org/2007/7/23/capistrano-multistagebutnone

e.g.

of my custom tasks within deploy.rb can reference the variable stage

 namespace :nginx do
   desc 'Setup symlinks to the sites public directory an nginx
config.'
   task :setup, :roles => :app do
     sudo "rm -f #{public_html}"
     sudo "ln -fs #{current_path}/public #{public_html}"
     sudo "rm -f /etc/nginx/vhosts/#{application_stage}.conf"
     sudo "ln -fs #{current_path}/config/nginx.#{stage}.conf /etc/
nginx/vhosts/#{application}.#{stage}.conf"
   end
 end

I just get undefined local variable or method `stage' .....

How do I keep this dry and have all my custom tasks in deploy.rb
rather than having to put them into both  deploy/production.rb and
deploy/testing.rb?

Thanks,
James

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