Class: Rados::Object

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

Overview

A Rados::Object represents an object in a pool in a cluster.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(attributes = {}) ⇒ Object

Returns a new instance of Object.



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# File 'lib/rados.rb', line 43

def initialize(attributes = {})
  @id = attributes[:id]
  @pool = attributes[:pool]
  @position = 0
end

Instance Attribute Details

#id ⇒ Object (readonly)

Returns the value of attribute id.



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# File 'lib/rados.rb', line 41

def id
  @id
end

#pool ⇒ Object (readonly)

Returns the value of attribute pool.



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# File 'lib/rados.rb', line 41

def pool
  @pool
end

#position ⇒ Object (readonly)

Returns the value of attribute position.



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# File 'lib/rados.rb', line 41

def position
  @position
end

Instance Method Details

#read ⇒ Object 



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# File 'lib/rados.rb', line 56

def read
  # FIXME: If the following does a part read and raises an
  # exception then the @position is invalid
  buf = pool.read(id, :offset => @position)
  if buf.size == 0
    nil
  else
    @position += buf.size
    buf
  end
end

#seek(amount, whence = IO::SEEK_SET) ⇒ Object 



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# File 'lib/rados.rb', line 68

def seek(amount, whence = IO::SEEK_SET)
  case whence
  when IO::SEEK_SET
    @position = amount
  when IO::SEEK_CUR
    @position += amount
  end
end

#write(buf) ⇒ Object 



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# File 'lib/rados.rb', line 49

def write(buf)
  # FIXME: If the following does a part write and raises an
  # exception then the @position is invalid
  @position += pool.write(id, buf, :offset => @position)
  self
end