Class: Tarantool::Response

Inherits:
Struct
  • Object
show all
Includes:
Serializers, UnpackTuples, Util::Packer, Util::TailGetter
Defined in:
lib/tarantool/response.rb

Constant Summary collapse

UTF8 = 
'utf-8'.freeze
X02 = 
'%02x'.freeze

Constants included from Serializers

Serializers::MAP

Constants included from Util::Packer

Util::Packer::INT16, Util::Packer::INT32, Util::Packer::INT64, Util::Packer::INT8, Util::Packer::MAX_INT16, Util::Packer::MAX_INT32, Util::Packer::MAX_INT64, Util::Packer::MAX_INT8, Util::Packer::MAX_SINT16, Util::Packer::MAX_SINT32, Util::Packer::MAX_SINT64, Util::Packer::MAX_SINT8, Util::Packer::MIN_INT, Util::Packer::MIN_SINT16, Util::Packer::MIN_SINT32, Util::Packer::MIN_SINT64, Util::Packer::MIN_SINT8, Util::Packer::SINT16, Util::Packer::SINT32, Util::Packer::SINT64, Util::Packer::SINT8

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Serializers

#check_type, #get_serializer

Instance Attribute Details

#body ⇒ Object

Returns the value of attribute body

Returns:

  • (Object) —

    the current value of body



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# File 'lib/tarantool/response.rb', line 27

def body
  @body
end

#cb ⇒ Object

Returns the value of attribute cb

Returns:

  • (Object) —

    the current value of cb



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# File 'lib/tarantool/response.rb', line 27

def cb
  @cb
end

#fields ⇒ Object

Returns the value of attribute fields

Returns:

  • (Object) —

    the current value of fields



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# File 'lib/tarantool/response.rb', line 27

def fields
  @fields
end

#get_tuples ⇒ Object

Returns the value of attribute get_tuples

Returns:

  • (Object) —

    the current value of get_tuples



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# File 'lib/tarantool/response.rb', line 27

def get_tuples
  @get_tuples
end

#request_type ⇒ Object

Returns the value of attribute request_type

Returns:

  • (Object) —

    the current value of request_type



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# File 'lib/tarantool/response.rb', line 27

def request_type
  @request_type
end

#translators ⇒ Object

Returns the value of attribute translators

Returns:

  • (Object) —

    the current value of translators



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# File 'lib/tarantool/response.rb', line 27

def translators
  @translators
end

Instance Method Details

#_unpack_field(tuple_str, field, i, realfield, serializers) ⇒ Object 



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# File 'lib/tarantool/response.rb', line 110

def _unpack_field(tuple_str, field, i, realfield, serializers)
  field_size = ::BinUtils.slice_ber!(tuple_str)
  return nil if field_size == 0

  case field
  when :int, :integer
    if field_size != 4
      raise ValueError, "Bad field size #{field_size} for integer field ##{i}"
    end
    ::BinUtils.slice_int32_le!(tuple_str)
  when :string, :str
    str = tuple_str.slice!(0, field_size)
    str[0,1] = EMPTY  if str < ONE
    str.force_encoding(UTF8)
  when :int64
    if field_size != 8
      raise ValueError, "Bad field size #{field_size} for 64bit integer field ##{i}"
    end
    ::BinUtils.slice_int64_le!(tuple_str)
  when :bytes
    tuple_str.slice!(0, field_size)
  when :int16
    if field_size != 2
      raise ValueError, "Bad field size #{field_size} for 16bit integer field ##{i}"
    end
    ::BinUtils.slice_int16_le!(tuple_str)
  when :int8
    if field_size != 1
      raise ValueError, "Bad field size #{field_size} for 8bit integer field ##{i}"
    end
    ::BinUtils.slice_int8!(tuple_str)
  when :sint
    if field_size != 4
      raise ValueError, "Bad field size #{field_size} for integer field ##{i}"
    end
    ::BinUtils.slice_sint32_le!(tuple_str)
  when :sint64
    if field_size != 8
      raise ValueError, "Bad field size #{field_size} for 64bit integer field ##{i}"
    end
    ::BinUtils.slice_sint64_le!(tuple_str)
  when :sint16
    if field_size != 2
      raise ValueError, "Bad field size #{field_size} for 16bit integer field ##{i}"
    end
    ::BinUtils.slice_sint16_le!(tuple_str)
  when :sint8
    if field_size != 1
      raise ValueError, "Bad field size #{field_size} for 8bit integer field ##{i}"
    end
    ::BinUtils.slice_sint8!(tuple_str)
  when :varint
    case field_size
    when 8
      ::BinUtils.slice_int64_le!(tuple_str)
    when 4
      ::BinUtils.slice_int32_le!(tuple_str)
    when 2
      ::BinUtils.slice_int16_le!(tuple_str)
    else
      raise ValueError, "Bad field size #{field_size} for integer field ##{i}"
    end
  when :auto
    str = tuple_str.slice!(0, field_size).force_encoding('utf-8')
    case field_size
    when 8, 4, 2
      Util::AutoType.new(str)
    else
      str
    end
  else
    (serializers[realfield] ||= get_serializer(field)).decode(tuple_str.slice!(0, field_size))
  end
end

#call(data) ⇒ Object 



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# File 'lib/tarantool/response.rb', line 34

def call(data)
  if Exception === data
    cb.call(data)
  else
    if (ret = return_code(data)) == 0
      call_callback parse_response_for_cb(data)
    else
      data.gsub!("\x00", "")
      cb.call CODE_TO_EXCEPTION[ret].new(ret, data)
    end
  end
end

#call_callback(result) ⇒ Object 



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# File 'lib/tarantool/response.rb', line 51

def call_callback(result)
  cb.call(Exception === result || get_tuples != :first ? result : result.first)
end

#parse_response(data) ⇒ Object 



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# File 'lib/tarantool/response.rb', line 61

def parse_response(data)
  return data  if Exception === data
  unless get_tuples
    ::BinUtils.get_int32_le(data)
  else
    tuples = unpack_tuples(data)
    if translators
      translators.each{|trans|
        tuples.map!{|tuple| trans.call(tuple)}
      }
    end
    tuples
  end
end

#parse_response_for_cb(data) ⇒ Object 



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# File 'lib/tarantool/response.rb', line 55

def parse_response_for_cb(data)
  parse_response data
rescue StandardError => e
  e
end

#return_code(data) ⇒ Object 



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# File 'lib/tarantool/response.rb', line 185

def return_code(data)
  ::BinUtils.slice_int32_le!(data)
end

#unpack_tuples(data) ⇒ Object 



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# File 'lib/tarantool/response.rb', line 77

def unpack_tuples(data)
  tuples_affected = ::BinUtils.slice_int32_le!(data)
  fields = fields()
  if Integer === fields.last
    *fields, tail = fields
  else
    tail = 1
  end
  orig_data = data.dup
  begin
    tuples = []
    serializers = []
    while tuples_affected > 0
      byte_size = ::BinUtils.slice_int32_le!(data)
      fields_num = ::BinUtils.slice_int32_le!(data)
      tuple_str = data.slice!(0, byte_size)
      i = 0
      tuple = []
      while i < fields_num
        field = fields[fieldno = i] || fields[fieldno = get_tail_no(fields, i, tail)]
        tuple << _unpack_field(tuple_str, field, i, fieldno, serializers)
        i += 1
      end
      tuples << tuple
      tuples_affected -= 1
    end
    tuples
  rescue ValueError => e
    $stderr.puts "Value Error: tuples=#{tuples_affected}, data='#{orig_data.each_byte.map{|b| format(X02, b)}.join(' ')}'"
    raise e
  end
end