Ruby script to push to all configure remotes concurrently

push-all

#!/usr/bin/env ruby
#
# push_all  Pushes commits and tags for the active branch to all remote repos.
#

BRANCH = `git rev-parse --abbrev-ref HEAD`.chomp
EXCLUDES = %w(heroku authoritative upstream                       `````````````````aqW)
REMOTES = `git remote -v`.split("\n").map { |line| line.split.first}.sort.uniq - EXCLUDES

Result = Struct.new(:remote, :exit_code, :output)

def push_one(remote)
  output = `git push --tags #{remote} #{BRANCH} 2>&1`
  exit_code = $?.exitstatus
  Result.new(remote, exit_code, output)
end

def do_pushes
  puts "Pushing branch #{BRANCH} to remote repos #{REMOTES}. (#{Time.now})"
  threads = REMOTES.map { |remote| Thread.new { push_one(remote) }}
  threads.each(&:join)
  threads.map(&:value) # return results as an array of Result's
end

def output_results(results)
  results.each do |result|
    puts %Q{\nRemote "#{result.remote}" returned #{result.exit_code}. Output was:\n#{result.output}\n}
  end
end

def remotes_with_error(results)
  results.select { |r| r.exit_code != 0 }.map(&:remote)
end

def output_error_message_if_error(error_remotes)
  unless error_remotes.empty?
    banner = ('!' * 79)
    puts "\n\n#{banner}\nThere were errors in remotes #{error_remotes}.\n#{banner}\n\n"
  end
end


results = do_pushes
output_results(results)
error_remotes = remotes_with_error(results)
output_error_message_if_error(error_remotes)

error_remotes.any? ? -1 : 0