Class: CephRuby::XattrEnumerator

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/ceph-ruby/xattr_enumerator.rb

Overview

Enumerator for Ceph Rados Objects Xattr

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(object) ⇒ XattrEnumerator

Returns a new instance of XattrEnumerator.



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# File 'lib/ceph-ruby/xattr_enumerator.rb', line 9

def initialize(object)
  self.object = object
  self.pool = object.pool
  open
end

Instance Attribute Details

#handle ⇒ Object (readonly)

Returns the value of attribute handle.



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# File 'lib/ceph-ruby/xattr_enumerator.rb', line 7

def handle
  @handle
end

#object ⇒ Object

Returns the value of attribute object.



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# File 'lib/ceph-ruby/xattr_enumerator.rb', line 6

def object
  @object
end

#pool ⇒ Object

Returns the value of attribute pool.



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# File 'lib/ceph-ruby/xattr_enumerator.rb', line 6

def pool
  @pool
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/ceph-ruby/xattr_enumerator.rb', line 15

def close
  Lib::Rados.rados_getxattrs_end(handle)
  @handle = nil
end

#each ⇒ Object 



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# File 'lib/ceph-ruby/xattr_enumerator.rb', line 33

def each
  return enum_for(:each) unless block_given?
  open
  loop do
    obj = next_xattr_object
    break if obj.nil?
    yield obj
  end
  close
end

#open ⇒ Object

Raises:

  • (SystemCallError) 


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# File 'lib/ceph-ruby/xattr_enumerator.rb', line 24

def open
  return if open?
  pool.ensure_open
  handle_p = FFI::MemoryPointer.new(:pointer)
  ret = Lib::Rados.rados_getxattrs(pool.handle, object.name, handle_p)
  raise SystemCallError.new('unable to open xattr list', -ret) if ret < 0
  @handle = handle_p.get_pointer(0)
end

#open? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ceph-ruby/xattr_enumerator.rb', line 20

def open?
  !handle.nil?
end