tumblr_gem_publish

#!/usr/bin/env ruby
require 'capistrano/cli'
require 'gem_command'

cap_file = File.join File.dirname(__FILE__), '..', 'lib', 'tumblr_gem_publish.rb'

gem_file = ARGV.first
abort "usage: tumblr_gem_publish pants.gem" unless gem_file and File.exist? gem_file

# build gem if gemspec is passed
if gem_file.end_with? '.gemspec'
  puts 'building gem from gemspec: ' + gem_file
  GemCommand.new 'BuildCommand', gem_file

  gem_file = Dir.entries('.').find {|entry| entry.end_with? '.gem'}
  puts "\n"
end

task_parameters = [
  '--file', cap_file,
  'publish:rubygem',
  '-s', 'gem_file=' + gem_file,
]

puts 'publishing gem to remote server'
Capistrano::CLI.parse(task_parameters).execute!

tumblr_gem_publish.rb

default_run_options[:pty]   = true
ssh_options[:forward_agent] = true

role :gem_server,  'nexus'
set :gem_command, :tumblr_gem

namespace :publish do
  task :rubygem do
    abort "usage: cap publish:rubygem -s gem_file=pants.gem" unless exists?(:gem_file)
    abort "gem file: #{gem_file} does not exist" unless File.exist?(gem_file)

    remote_gem_path = File.join '/tmp', gem_file
    upload gem_file, remote_gem_path

    # install gem
    sudo [gem_command, :install, remote_gem_path].join "\s"

    # remove remote tmp gem
    run 'rm ' + remote_gem_path 
  end
end