Class: Aspera::Transfer::Parameters

Inherits:
Object
  • Object
show all
Defined in:
lib/aspera/transfer/parameters.rb

Overview

translate transfer specification to ascp parameter list

Constant Summary collapse

SUPPORTED_AGENTS_SHORT =

Short names of columns in manual

SUPPORTED_AGENTS.map{|agent_sym|agent_sym.to_s[0].to_sym}
HTTP_FALLBACK_ACTIVATION_VALUES = 
['1', 1, true, 'force'].freeze

Class Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(job_spec, ascp_args: nil, wss: true, quiet: true, trusted_certs: nil, client_ssh_key: nil, check_ignore_cb: nil) ⇒ Parameters

Returns a new instance of Parameters.

Parameters:

  • options (Hash) —

    key: :wss: bool, :ascp_args: array of strings



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# File 'lib/aspera/transfer/parameters.rb', line 108

def initialize(
  job_spec,
  ascp_args:       nil,
  wss:             true,
  quiet:           true,
  trusted_certs:   nil,
  client_ssh_key:  nil,
  check_ignore_cb: nil
)
  @job_spec = job_spec
  @ascp_args = ascp_args.nil? ? [] : ascp_args
  @wss = wss
  @quiet = quiet
  @trusted_certs = trusted_certs.nil? ? [] : trusted_certs
  @client_ssh_key = client_ssh_key.nil? ? :rsa : client_ssh_key.to_sym
  @check_ignore_cb = check_ignore_cb
  Aspera.assert_type(@job_spec, Hash)
  Aspera.assert_type(@ascp_args, Array){'ascp_args'}
  Aspera.assert(@ascp_args.all?(String)){'all ascp arguments must be String'}
  Aspera.assert_type(@trusted_certs, Array){'trusted_certs'}
  Aspera.assert_values(@client_ssh_key, Ascp::Installation::CLIENT_SSH_KEY_OPTIONS)
  @builder = CommandLineBuilder.new(@job_spec, Spec::DESCRIPTION)
end

Class Attribute Details

.file_list_folder ⇒ Object

static methods



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# File 'lib/aspera/transfer/parameters.rb', line 104

def file_list_folder
  @file_list_folder
end

Class Method Details

.ascp_args_file_list?(ascp_args) ⇒ Boolean

file list is provided directly with ascp arguments

Parameters:

  • ascp_args (Array, NilClass) —

    ascp arguments

Returns:

  • (Boolean) 


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# File 'lib/aspera/transfer/parameters.rb', line 91

def ascp_args_file_list?(ascp_args)
  ascp_args&.any?{|i|FILE_LIST_OPTIONS.include?(i)}
end

.convert_base64(value) ⇒ Object

special encoding methods used in YAML (key: :convert)



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# File 'lib/aspera/transfer/parameters.rb', line 87

def convert_base64(value); Base64.strict_encode64(value); end

.convert_json64(value) ⇒ Object

special encoding methods used in YAML (key: :convert)



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# File 'lib/aspera/transfer/parameters.rb', line 84

def convert_json64(value); Base64.strict_encode64(JSON.generate(value)); end

.convert_remove_hyphen(value) ⇒ Object

special encoding methods used in YAML (key: :convert)



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# File 'lib/aspera/transfer/parameters.rb', line 81

def convert_remove_hyphen(value); value.tr('-', ''); end

.man_table(formatter) ⇒ Object

Returns a table suitable to display in manual.

Parameters:

Returns:

  • a table suitable to display in manual



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# File 'lib/aspera/transfer/parameters.rb', line 39

def man_table(formatter)
  result = []
  Spec::DESCRIPTION.each do |name, options|
    param = {name: name, type: [options[:accepted_types]].flatten.join(','), description: options[:desc]}
    # add flags for supported agents in doc
    SUPPORTED_AGENTS.each do |agent_sym|
      param[agent_sym.to_s[0].to_sym] = Cli::Formatter.tick(options[:agents].nil? || options[:agents].include?(agent_sym))
    end
    # only keep lines that are usable in supported agents
    next if SUPPORTED_AGENTS_SHORT.inject(true){|memory, agent_short_sym|memory && param[agent_short_sym].empty?}
    param[:cli] =
      case options[:cli][:type]
      when :envvar then 'env:' + options[:cli][:variable]
      when :opt_without_arg then options[:cli][:switch]
      when :opt_with_arg
        values = if options.key?(:enum)
          ['enum']
        elsif options[:accepted_types].is_a?(Array)
          options[:accepted_types]
        elsif !options[:accepted_types].nil?
          [options[:accepted_types]]
        else
          raise "error: #{param}"
        end.map{|n|"{#{n}}"}.join('|')
        conversion_tag = options[:cli].key?(:convert) ? '(conversion)' : ''
        "#{options[:cli][:switch]} #{conversion_tag}#{values}"
      when :special then formatter.special_format('special')
      when :ignore then formatter.special_format('ignored')
      else
        param[:d].eql?(tick_yes) ? '' : 'n/a'
      end
    if options.key?(:enum)
      param[:description] += "\nAllowed values: #{options[:enum].join(', ')}"
    end
    # replace "solidus" HTML entity with its text value
    param[:description] = param[:description].gsub('/', '\\')
    result.push(param)
  end
  return result.sort_by { |parameter_info| parameter_info[:name] }
end

Instance Method Details

#ascp_args ⇒ Object

translate transfer spec to env vars and command line arguments for ascp



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# File 'lib/aspera/transfer/parameters.rb', line 207

def ascp_args
  env_args = {
    args: [],
    env:  {},
    name: :ascp
  }

  # special cases
  @job_spec.delete('source_root') if @job_spec.key?('source_root') && @job_spec['source_root'].empty?

  # notify multi-session was already used, anyway it was deleted by agent direct
  Aspera.assert(!@builder.read_param('multi_session'))

  # add ssh or wss certificates
  # (reverse, to keep order, as we unshift)
  remote_certificates&.reverse_each do |cert|
    env_args[:args].unshift('-i', cert)
  end

  # process parameters as specified in table
  @builder.process_params

  base64_destination = false
  # symbol must be index of Ascp::Installation.paths
  if @builder.read_param('use_ascp4')
    env_args[:name] = :ascp4
  else
    env_args[:name] = :ascp
    base64_destination = true
  end
  # destination will be base64 encoded, put this before source path arguments
  @builder.add_command_line_options(['--dest64']) if base64_destination
  # optional arguments, at the end to override previous ones (to allow override)
  @builder.add_command_line_options(@ascp_args)
  # get list of source files to transfer and build arg for ascp
  process_file_list
  # process destination folder
  destination_folder = @builder.read_param('destination_root') || '/'
  # ascp4 does not support base64 encoding of destination
  destination_folder = Base64.strict_encode64(destination_folder) if base64_destination
  # destination MUST be last command line argument to ascp
  @builder.add_command_line_options([destination_folder])
  @builder.add_env_args(env_args)
  env_args[:args].unshift('-q') if @quiet
  # add fallback cert and key as arguments if needed
  if HTTP_FALLBACK_ACTIVATION_VALUES.include?(@job_spec['http_fallback'])
    env_args[:args].unshift('-Y', Ascp::Installation.instance.path(:fallback_private_key))
    env_args[:args].unshift('-I', Ascp::Installation.instance.path(:fallback_certificate))
  end
  # disable redis in client
  env_args[:env]['ASPERA_TEST_REDIS_DISABLE'] = 'true'
  Log.log.debug{"ascp args: #{env_args}"}
  return env_args
end

#process_file_list ⇒ Object

either place source files on command line, or add file list file



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# File 'lib/aspera/transfer/parameters.rb', line 133

def process_file_list
  # is the file list provided through ascp parameters?
  ascp_file_list_provided = self.class.ascp_args_file_list?(@ascp_args)
  # set if paths is mandatory in ts
  @builder.params_definition['paths'][:mandatory] = !@job_spec.key?('keepalive') && !ascp_file_list_provided # cspell:words keepalive
  # get paths in transfer spec (after setting if it is mandatory)
  ts_paths_array = @builder.read_param('paths')
  file_list_option = nil
  # transfer spec contains paths ?
  if !ts_paths_array.nil?
    Aspera.assert(!ascp_file_list_provided){'file list provided both in transfer spec and ascp file list. Remove one of them.'}
    Aspera.assert(ts_paths_array.all?{|i|i.key?('source')}){"All elements of paths must have a 'source' key"}
    is_pair_list = ts_paths_array.any?{|i|i.key?('destination')}
    raise "All elements of paths must be consistent with 'destination' key" if is_pair_list && !ts_paths_array.all?{|i|i.key?('destination')}
    if self.class.file_list_folder.nil?
      Aspera.assert(!is_pair_list){'file pair list is not supported when file list folder is not set'}
      # not safe for special characters ? (maybe not, depends on OS)
      Log.log.debug('placing source file list on command line (no file list file)')
      @builder.add_command_line_options(ts_paths_array.map{|i|i['source']})
    else
      # safer option: generate a file list file if there is storage defined for it
      if is_pair_list
        file_list_option = '--file-pair-list'
        lines = ts_paths_array.each_with_object([]){|e, m|m.push(e['source'], e['destination']) }
      else
        file_list_option = '--file-list'
        lines = ts_paths_array.map{|i|i['source']}
      end
      file_list_file = TempFileManager.instance.new_file_path_in_folder(self.class.file_list_folder)
      Log.log.debug{Log.dump(:file_list, lines)}
      File.write(file_list_file, lines.join("\n"), encoding: 'UTF-8')
      Log.log.debug{"#{file_list_option}=\n#{File.read(file_list_file)}".red}
    end
  end
  @builder.add_command_line_options(["#{file_list_option}=#{file_list_file}"]) unless file_list_option.nil?
end

#remote_certificates ⇒ Object

Returns the list of certificates to use when token/ssh or wss are used.

Returns:

  • the list of certificates to use when token/ssh or wss are used



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# File 'lib/aspera/transfer/parameters.rb', line 171

def remote_certificates
  certificates_to_use = []
  # use web socket secure for session ?
  if @builder.read_param('wss_enabled') && (@wss || !@job_spec.key?('fasp_port'))
    # by default use web socket session if available, unless removed by user
    @builder.add_command_line_options(['--ws-connect'])
    # TODO: option to give order ssh,ws (legacy http is implied by ssh)
    # This will need to be cleaned up in aspera core
    @job_spec['ssh_port'] = @builder.read_param('wss_port')
    @job_spec.delete('fasp_port')
    @job_spec.delete('sshfp')
    # set location for CA bundle to be the one of Ruby, see env var SSL_CERT_FILE / SSL_CERT_DIR
    certificates_to_use.concat(@trusted_certs)
    # ignore cert for wss ?
    if @check_ignore_cb&.call(@job_spec['remote_host'], @job_spec['wss_port'])
      wss_cert_file = TempFileManager.instance.new_file_path_global('wss_cert')
      wss_url = "https://#{@job_spec['remote_host']}:#{@job_spec['wss_port']}"
      File.write(wss_cert_file, Rest.remote_certificate_chain(wss_url))
      # place in front, as more priority
      certificates_to_use.unshift(wss_cert_file)
    end
    # when wss is used, only first `-i` is used... Hum...
    certificates_to_use = [certificates_to_use.first] unless certificates_to_use.empty?
  else
    # remove unused parameter (avoid warning)
    @job_spec.delete('wss_port')
    # add SSH bypass keys when authentication is token and no auth is provided
    if @job_spec.key?('token') && !@job_spec.key?('remote_password')
      # @job_spec['remote_password'] = Ascp::Installation.instance.ssh_cert_uuid # not used: no passphrase
      certificates_to_use.concat(Ascp::Installation.instance.aspera_token_ssh_key_paths(@client_ssh_key))
    end
  end
  return certificates_to_use
end