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(4).unpack1("i!<")
  @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_byte ⇒ Object 



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

def read_byte
  read(1).unpack1("C")
end

#read_char ⇒ Object 



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

def read_char
  read(1).unpack1("c")
end

#read_data_object ⇒ Object 



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# File 'lib/ignite/response.rb', line 93

def read_data_object
  type_code = read_byte
  case type_code
  when 1
    read_byte
  when 2
    read_short
  when 3
    read_int
  when 4
    read_long
  when 5
    read_float
  when 6
    read_double
  when 7
    read_char
  when 8
    read_bool
  when 9
    read_string
  when 11
    read_date
  when 30
    read_decimal
  when 33
    read_timestamp
  when 101
    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 67

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(8).unpack1("E")
end

#read_float ⇒ Object 



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

def read_float
  read(4).unpack1("e")
end

#read_int ⇒ Object 



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

def read_int
  read(4).unpack1("i!<")
end

#read_long ⇒ Object 



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

def read_long
  read(8).unpack1("l!<")
end

#read_short ⇒ Object 



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

def read_short
  read(2).unpack1("s!<")
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 



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

def read_string_object
  type = read_byte
  raise "Expected string, not type #{type}" unless type == 9
  read_string
end

#read_timestamp ⇒ Object 



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# File 'lib/ignite/response.rb', line 85

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