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Bundle capistrano-ext/multistage with the main Gem.

Almost everybody uses the multistage extension, and having it in a
sepate gem has never really made that much sense. With this commit you
can use multistage by requiring `capistrano/ext/multistage`. The Gem
`capistrano-ext` no longer required.
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commit eed1a6e2a1d0df8c01d5566cfdeb5ca6c047a748 1 parent c46cefb
@leehambley leehambley authored
Showing with 62 additions and 0 deletions.
  1. +62 −0 lib/capistrano/ext/multistage.rb
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62 lib/capistrano/ext/multistage.rb
@@ -0,0 +1,62 @@
+require 'fileutils'
+
+unless Capistrano::Configuration.respond_to?(:instance)
+ abort "capistrano/ext/multistage requires Capistrano 2"
+end
+
+Capistrano::Configuration.instance.load do
+ location = fetch(:stage_dir, "config/deploy")
+
+ unless exists?(:stages)
+ set :stages, Dir["#{location}/*.rb"].map { |f| File.basename(f, ".rb") }
+ end
+
+ stages.each do |name|
+ desc "Set the target stage to `#{name}'."
+ task(name) do
+ set :stage, name.to_sym
+ load "#{location}/#{stage}"
+ end
+ end
+
+ on :load do
+ if stages.include?(ARGV.first)
+ # Execute the specified stage so that recipes required in stage can contribute to task list
+ find_and_execute_task(ARGV.first) if ARGV.any?{ |option| option =~ /-T|--tasks|-e|--explain/ }
+ else
+ # Execute the default stage so that recipes required in stage can contribute tasks
+ find_and_execute_task(default_stage) if exists?(:default_stage)
+ end
+ end
+
+ namespace :multistage do
+ desc "[internal] Ensure that a stage has been selected."
+ task :ensure do
+ if !exists?(:stage)
+ if exists?(:default_stage)
+ logger.important "Defaulting to `#{default_stage}'"
+ find_and_execute_task(default_stage)
+ else
+ abort "No stage specified. Please specify one of: #{stages.join(', ')} (e.g. `cap #{stages.first} #{ARGV.last}')"
+ end
+ end
+ end
+
+ desc "Stub out the staging config files."
+ task :prepare do
+ FileUtils.mkdir_p(location)
+ stages.each do |name|
+ file = File.join(location, name + ".rb")
+ unless File.exists?(file)
+ File.open(file, "w") do |f|
+ f.puts "# #{name.upcase}-specific deployment configuration"
+ f.puts "# please put general deployment config in config/deploy.rb"
+ end
+ end
+ end
+ end
+ end
+
+ on :start, "multistage:ensure", :except => stages + ['multistage:prepare']
+
+end
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