Class: Rudy::MetaData::Disk

Inherits:
Storable
  • Object
show all
Includes:
ObjectBase
Defined in:
lib/rudy/metadata/disk.rb

Instance Method Summary collapse

Methods included from ObjectBase

#==, #initialize, #liner_note, #refresh, #save

Methods included from Huxtable

change_environment, change_position, change_region, change_role, change_zone, #check_keys, #config_dirname, create_domain, #current_group_name, #current_machine_address, #current_machine_count, #current_machine_group, #current_machine_hostname, #current_machine_image, #current_machine_name, #current_machine_size, #current_user, #current_user_keypairpath, debug?, #debug?, domain, domain_exists?, #group_metadata, #has_keypair?, #has_keys?, #has_pem_keys?, #has_root_keypair?, keypair_path_to_name, #known_machine_group?, #root_keypairname, #root_keypairpath, #switch_user, update_config, update_global, update_logger, #user_keypairname, #user_keypairpath

Instance Method Details

#attach(instid) ⇒ Object 



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# File 'lib/rudy/metadata/disk.rb', line 110

def attach(instid)
  raise "No volume id" unless exists?
  vol = @rvol.attach(@awsid, instid, @device)
end

#backup ⇒ Object 



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# File 'lib/rudy/metadata/disk.rb', line 90

def backup
  raise "No volume to backup" unless @awsid
  bup = Rudy::MetaData::Backup.new(@awsid, @path, @position)
  bup.size = @size || 1
  bup.fstype = @fstype || 'ext3'
  bup.create
end

#create(size = nil, zone = nil, snapshot = nil) ⇒ Object 



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# File 'lib/rudy/metadata/disk.rb', line 81

def create(size=nil, zone=nil, snapshot=nil)
  raise "#{name} already exists" if exists?
  vol = @rvol.create(size || @size, zone || @zone, snapshot) 
  @awsid = vol.awsid
  @raw = true
  self.save
  self
end

#destroy(force = false) ⇒ Object 



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# File 'lib/rudy/metadata/disk.rb', line 120

def destroy(force=false)
  if @awsid && !deleting?
    if !force
      raise Rudy::AWS::EC2::VolumeNotAvailable, @awsid if attached?
    else
      detach if exists? && attached?
      sleep 0.1
    end
    raise Rudy::AWS::EC2::VolumeNotAvailable, @awsid if in_use?
    @rvol.destroy(@awsid) if exists? && available?
  end
  super() # quotes, otherwise Ruby will send this method's args
end

#detach ⇒ Object 



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# File 'lib/rudy/metadata/disk.rb', line 115

def detach
  raise "No volume id" unless exists?
  vol = @rvol.detach(@awsid)
end

#init(path = nil, size = nil, device = nil, position = nil) ⇒ Object 



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# File 'lib/rudy/metadata/disk.rb', line 31

def init(path=nil, size=nil, device=nil, position=nil)
  @path, @size, @device = path, size, device
  @rtype = 'disk'
  @region = @@global.region
  @zone = @@global.zone
  @environment = @@global.environment
  @role = @@global.role
  @position = position || @@global.position
  @mounted = false
  
  now = Time.now.utc
  datetime = Backup.format_timestamp(now).split(Rudy::DELIM)
  @created = now.to_i
  
  postprocess
end

#inspect ⇒ Object 



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# File 'lib/rudy/metadata/disk.rb', line 63

def inspect
  lines = []
  lines << liner_note
  field_names.each do |key|
    next unless self.respond_to?(key)
    val = self.send(key)
    lines << sprintf(" %22s: %s", key, (val.is_a?(Array) ? val.join(', ') : val))
  end
  lines.join($/)
end

#list_backups ⇒ Object 



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# File 'lib/rudy/metadata/disk.rb', line 98

def list_backups
  rback = Rudy::Backups.new
  props = {
    :environment => @environment, 
    :role => @role,
    :zone => @zone,
    :region => @region,
    :position => @position
  }
  rback.list([], [], props)
end

#mounted? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rudy/metadata/disk.rb', line 164

def mounted?
  @mounted && @mounted == true
end

#name ⇒ Object 



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# File 'lib/rudy/metadata/disk.rb', line 74

def name
  sep=File::SEPARATOR
  dirs = @path.split sep if @path && !@path.empty?
  dirs.shift while dirs && (dirs[0].nil? || dirs[0].empty?)
  super("disk", @zone, @environment, @role, @position, *dirs)
end

#postprocess ⇒ Object 



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# File 'lib/rudy/metadata/disk.rb', line 48

def postprocess
  @size &&= @size.to_i
  @mounted = true if @mounted == "true"
end

#to_query(more = [], less = []) ⇒ Object 



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# File 'lib/rudy/metadata/disk.rb', line 148

def to_query(more=[], less=[])
  super([:path, *more], less)  # Add path to the default fields
end

#to_s(with_titles = true) ⇒ Object 



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# File 'lib/rudy/metadata/disk.rb', line 53

def to_s(with_titles=true)
  update
  mtd = @mounted == true ? "mounted" : @status
  if @size && @device
    "%s; %3sGB; %s; %s" % [liner_note, @size, @device, mtd]
  else
    liner_note
  end
end

#to_select(more = [], less = []) ⇒ Object 



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# File 'lib/rudy/metadata/disk.rb', line 152

def to_select(more=[], less=[])
  super([:path, *more], less) 
end

#update ⇒ Object 



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# File 'lib/rudy/metadata/disk.rb', line 134

def update
  @awsid = nil if @awsid && @awsid.empty?
  @volume = @rvol.get(@awsid) if @awsid
  if @volume.is_a?(Rudy::AWS::EC2::Volume)
    @status = @volume.status
    @instid = @volume.instid
    save
  else
    @awsid, @status, @instid = nil, nil, nil
    @mounted = false # I don't like having to set this
    # Don't save it  b/c it's possible the EC2 server is just down
  end
end

#valid? ⇒ Boolean

Does this disk have enough info to be saved or used? The test is based on the same criteria for building SimpleDB queries.

Returns:

  • (Boolean) 


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# File 'lib/rudy/metadata/disk.rb', line 159

def valid?
  criteria = build_criteria([:path]).flatten
  criteria.size == criteria.compact.size
end