Module: Capistrano::S3Archive::SCM::RsyncStrategy

Defined in:
lib/capistrano/s3_archive.rb

Defined Under Namespace

Classes: MissingSSHKyesError, ResourceBusyError

Instance Method Summary collapse

Instance Method Details

#check ⇒ Object 



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# File 'lib/capistrano/s3_archive.rb', line 89

def check
  return if context.class == SSHKit::Backend::Local
  ssh_key  = ssh_key_for(context.host)
  if ssh_key.nil?
    fail MissingSSHKyesError, "#{RsyncStrategy} only supports publickey authentication. Please set #{context.host.hostname}.keys or ssh_options."
  end
end

#cleanup ⇒ Object 



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# File 'lib/capistrano/s3_archive.rb', line 135

def cleanup
  run_locally do
    archives_dir = File.join(fetch(:s3_archive), fetch(:stage).to_s)
    archives = capture(:ls, '-xtr', archives_dir).split
    if archives.count >= fetch(:keep_releases)
      tobe_removes = (archives - archives.last(fetch(:keep_releases)))
      if tobe_removes.any?
        tobe_removes_str = tobe_removes.map do |file|
          File.join(archives_dir, file)
        end.join(' ')
        execute :rm, tobe_removes_str
      end
    end
  end
end

#current_revision ⇒ Object 



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# File 'lib/capistrano/s3_archive.rb', line 183

def current_revision
  fetch(:version_id) ? "#{archive_object_key}?versionid=#{fetch(:version_id)}" : archive_object_key
end

#local_check ⇒ Object 



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# File 'lib/capistrano/s3_archive.rb', line 85

def local_check
  list_objects(false)
end

#release(server = context.host) ⇒ Object 



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# File 'lib/capistrano/s3_archive.rb', line 151

def release(server = context.host)
  unless context.class == SSHKit::Backend::Local
    user = user_for(server) + '@' unless user_for(server).nil?
    key  = ssh_key_for(server)
    ssh_port_option = server.port.nil? ? '' : "-p #{server.port}"
  end
  rsync = ['rsync']
  rsync.concat fetch(:rsync_options)
  rsync << fetch(:local_cache_dir) + '/'
  unless context.class == SSHKit::Backend::Local
    rsync << "-e 'ssh -i #{key} #{ssh_port_option} #{fetch(:rsync_ssh_options).join(' ')}'"
    rsync << "#{user}#{server.hostname}:#{rsync_cache || release_path}"
  else
    rsync << '--no-compress'
    rsync << "#{rsync_cache || release_path}"
  end
  release_lock do
    run_locally do
      execute *rsync
    end
  end

  unless fetch(:rsync_cache).nil?
    cache = rsync_cache
    link_option = if fetch(:hardlink) && test!("[ `readlink #{current_path}` != #{release_path} ]")
                    "--link-dest `readlink #{current_path}`"
                  end
    copy = %(#{fetch(:rsync_copy)} #{link_option} "#{cache}/" "#{release_path}/")
    context.execute copy
  end
end

#ssh_key_for(host) ⇒ Object 



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# File 'lib/capistrano/s3_archive.rb', line 187

def ssh_key_for(host)
  if not host.keys.empty?
    host.keys.first
  elsif host.ssh_options && host.ssh_options.has_key?(:keys)
    Array(host.ssh_options[:keys]).first
  elsif fetch(:ssh_options, nil) && fetch(:ssh_options).has_key?(:keys)
    fetch(:ssh_options)[:keys].first
  end
end

#stage ⇒ Object 



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# File 'lib/capistrano/s3_archive.rb', line 97

def stage
  stage_lock do
    archive_dir = File.join(fetch(:s3_archive), fetch(:stage).to_s)
    archive_file = File.join(archive_dir, File.basename(archive_object_key))
    tmp_file = "#{archive_file}.part"
    etag_file = File.join(archive_dir, ".#{File.basename(archive_object_key)}.etag")
    fail "#{tmp_file} is found. Another process is running?" if File.exist?(tmp_file)

    etag = get_object_metadata.tap { |it| fail "No such object: #{current_revision}" if it.nil? }.etag
    if [archive_file, etag_file].all? { |f| File.exist?(f) } && File.read(etag_file) == etag
      context.info "#{archive_file} (etag:#{etag}) is found. download skipped."
    else
      context.info "Download #{current_revision} to #{archive_file}"
      mkdir_p(File.dirname(archive_file))
      File.open(tmp_file, 'w') do |f|
        get_object(f)
      end
      move(tmp_file, archive_file)
      File.write(etag_file, etag)
    end

    remove_entry_secure(fetch(:local_cache_dir)) if File.exist? fetch(:local_cache_dir)
    mkdir_p(fetch(:local_cache_dir))
    case archive_file
    when /\.zip\Z/
      cmd = "unzip -q -d #{fetch(:local_cache_dir)} #{archive_file}"
    when /\.tar\.gz\Z|\.tar\.bz2\Z|\.tgz\Z/
      cmd = "tar xf #{archive_file} -C #{fetch(:local_cache_dir)}"
    end

    release_lock(true) do
      run_locally do
        execute cmd
      end
    end
  end
end

#user_for(host) ⇒ Object 



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# File 'lib/capistrano/s3_archive.rb', line 197

def user_for(host)
  if host.user
    host.user
  elsif host.ssh_options && host.ssh_options.has_key?(:user)
    host.ssh_options[:user]
  elsif fetch(:ssh_options, nil) && fetch(:ssh_options).has_key?(:user)
    fetch(:ssh_options)[:user]
  end
end