Class: Ignite::Response

Inherits:
Object
  • Object
show all
Defined in:
lib/ignite/response.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(client) ⇒ Response

Returns a new instance of Response.



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# File 'lib/ignite/response.rb', line 5

def initialize(client)
  @client = client

  # use buffer so errors don't leave unread data on socket
  len = client.read(SIZE_INT).unpack1(PACK_INT)
  @buffer = StringIO.new(client.read(len))
end

Instance Attribute Details

#client ⇒ Object (readonly)

Returns the value of attribute client.



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# File 'lib/ignite/response.rb', line 3

def client
  @client
end

Instance Method Details

#read(len) ⇒ Object 



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# File 'lib/ignite/response.rb', line 13

def read(len)
  @buffer.read(len)
end

#read_bool ⇒ Object 



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# File 'lib/ignite/response.rb', line 45

def read_bool
  read_byte != 0
end

#read_bool_array ⇒ Object 



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# File 'lib/ignite/response.rb', line 78

def read_bool_array
  read_byte_array.map { |v| v != 0 }
end

#read_byte ⇒ Object 



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# File 'lib/ignite/response.rb', line 17

def read_byte
  read(SIZE_BYTE).unpack1(PACK_BYTE)
end

#read_byte_array ⇒ Object 



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# File 'lib/ignite/response.rb', line 66

def read_byte_array
  read_array(SIZE_BYTE, PACK_BYTE)
end

#read_char ⇒ Object 



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# File 'lib/ignite/response.rb', line 41

def read_char
  read(SIZE_CHAR).unpack1(PACK_CHAR)
end

#read_data_object ⇒ Object 



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# File 'lib/ignite/response.rb', line 109

def read_data_object
  type_code = read_byte
  case type_code
  when TYPE_BYTE
    read_byte
  when TYPE_SHORT
    read_short
  when TYPE_INT
    read_int
  when TYPE_LONG
    read_long
  when TYPE_FLOAT
    read_float
  when TYPE_DOUBLE
    read_double
  when TYPE_CHAR
    read_char
  when TYPE_BOOL
    read_bool
  when TYPE_STRING
    read_string
  when TYPE_DATE
    read_date
  when TYPE_BYTE_ARRAY
    read_byte_array
  when TYPE_LONG_ARRAY
    read_long_array
  when TYPE_DOUBLE_ARRAY
    read_double_array
  when TYPE_BOOL_ARRAY
    read_bool_array
  when TYPE_DECIMAL
    read_decimal
  when TYPE_TIMESTAMP
    read_timestamp
  when TYPE_NULL
    nil
  else
    raise Error, "Type not supported yet: #{type_code}. Please create an issue."
  end
end

#read_date ⇒ Object 



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# File 'lib/ignite/response.rb', line 60

def read_date
  msecs_since_epoch = read_long
  sec = msecs_since_epoch / 1000
  Time.at(sec).to_date
end

#read_decimal ⇒ Object

same as Python



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# File 'lib/ignite/response.rb', line 83

def read_decimal
  scale = read_int
  length = read_int
  data = read(length).unpack("C*")

  sign = (data[0] & 0x80) != 0
  data[0] = data[0] & 0x7f

  result = 0
  data.reverse.each_with_index do |v, i|
    result += v * 0x100 ** i
  end

  result = result / BigDecimal("10") ** BigDecimal(scale)
  result = -result if sign
  result
end

#read_double ⇒ Object 



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# File 'lib/ignite/response.rb', line 37

def read_double
  read(SIZE_DOUBLE).unpack1(PACK_DOUBLE)
end

#read_double_array ⇒ Object 



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# File 'lib/ignite/response.rb', line 74

def read_double_array
  read_array(SIZE_DOUBLE, PACK_DOUBLE)
end

#read_float ⇒ Object 



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# File 'lib/ignite/response.rb', line 33

def read_float
  read(SIZE_FLOAT).unpack1(PACK_FLOAT)
end

#read_int ⇒ Object 



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# File 'lib/ignite/response.rb', line 25

def read_int
  read(SIZE_INT).unpack1(PACK_INT)
end

#read_long ⇒ Object 



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# File 'lib/ignite/response.rb', line 29

def read_long
  read(SIZE_LONG).unpack1(PACK_LONG)
end

#read_long_array ⇒ Object 



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# File 'lib/ignite/response.rb', line 70

def read_long_array
  read_array(SIZE_LONG, PACK_LONG)
end

#read_short ⇒ Object 



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# File 'lib/ignite/response.rb', line 21

def read_short
  read(SIZE_SHORT).unpack1(PACK_SHORT)
end

#read_string ⇒ Object 



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# File 'lib/ignite/response.rb', line 49

def read_string
  len = read_int
  read(len)
end

#read_string_object ⇒ Object

Raises:



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# File 'lib/ignite/response.rb', line 54

def read_string_object
  type = read_byte
  raise Error, "Expected string, not type #{type}" unless type == TYPE_STRING
  read_string
end

#read_timestamp ⇒ Object 



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# File 'lib/ignite/response.rb', line 101

def read_timestamp
  msecs_since_epoch = read_long
  msec_fraction_in_nsecs = read_int
  sec = msecs_since_epoch / 1000
  nsec = (msecs_since_epoch % 1000) * 1000000 + msec_fraction_in_nsecs
  Time.at(sec, nsec, :nanosecond)
end