capistrano v3 で deploy_via copy するメモ

capistrano v3 で deploy_via :copy が実装されていないようなので自分でコピーするタスクを書いてみた。
粗い感じなのでそのうち直すかも。メモレベルです。

copy.cap

namespace :my do

  set :my_local_tmp_dir, ->() { "#{fetch(:tmp_dir)}/#{fetch(:application)}" }

  task :wrapper do
    run_locally do
      execute :mkdir, '-p', "#{fetch(:my_local_tmp_dir)}/"
      execute :echo, "'#!/bin/sh -e\nexec /usr/bin/ssh -o PasswordAuthentication=no -o StrictHostKeyChecking=no \"\$@\"\n'", '>', "#{fetch(:my_local_tmp_dir)}/git-ssh.sh"
      execute :chmod, '+x', "#{fetch(:my_local_tmp_dir)}/git-ssh.sh"
    end
  end

  task clone: :'my:wrapper' do
    run_locally do
      if test " [ -f #{fetch(:my_local_tmp_dir)}/#{fetch(:application)}/HEAD ] "
        info t(:mirror_exists, at: repo_path)
      else
        within "#{fetch(:my_local_tmp_dir)}" do
          with fetch(:git_environmental_variables) do
            execute :git, :clone, '--mirror', repo_url, "#{fetch(:application)}"
          end
        end
      end
    end
  end

  task update: :'my:clone' do
    run_locally do
      within "#{fetch(:my_local_tmp_dir)}/#{fetch(:application)}" do
        execute :git, :remote, :update
      end
    end
  end

  task create_release: :'my:update' do
    run_locally do
      within "#{fetch(:my_local_tmp_dir)}/#{fetch(:application)}" do
        execute :git, :archive, '--format=tar', fetch(:branch), "> #{fetch(:application)}.tar"
      end
    end
  end

  desc 'cap deploy via copy'
  task deploy: :'my:create_release' do
    tar_text = nil
    run_locally do
      tar_text = File.open("#{fetch(:my_local_tmp_dir)}/#{fetch(:application)}/#{fetch(:application)}.tar").read
    end

    on roles :all do
      execute :mkdir, '-p', "#{fetch(:tmp_dir)}/#{fetch(:application)}/"
      upload! StringIO.new(tar_text), "#{fetch(:my_local_tmp_dir)}/#{fetch(:application)}.tar"

      execute :mkdir, '-p', release_path
      execute :tar, '-xvf', "#{fetch(:my_local_tmp_dir)}/#{fetch(:application)}.tar", '-C', release_path
    end
  end
end