Class: RightImage::IdList

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

Overview

Manages a global store of image ids for images that have been on a single rightimage creator instance. The image data is persisted on the local filesystem.

Instance Method Summary collapse

Constructor Details

#initialize(logger = nil) ⇒ IdList

Returns a new instance of IdList.



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# File 'lib/id_list.rb', line 10

def initialize(logger = nil)
  @log = (logger) ? logger : Logger.new(STDOUT)
  @file = ::File.join(ENV["HOME"], "rightimage_id_list")
end

Instance Method Details

#add(id, storage_type = nil) ⇒ Object

Pass in id that the cloud provider passes back upon registration NOTE: Be sure to set storage type for EC2 “EBS” images so we can properly know what kind of MCI to make later.



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# File 'lib/id_list.rb', line 19

def add(id, storage_type = nil)
  list_load
  key = id.to_s
  key.chomp!
  @log.info("Adding #{key} to #{(@list) ? 'existing' : 'empty'} id list.")
  entry = { key => { } }
  entry[key]["storage_type"] = storage_type if storage_type
  @list.merge!(entry)
  list_save
end

#clear ⇒ Object

Wipes out the list by deleting the file.



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# File 'lib/id_list.rb', line 47

def clear
  if ::File.exists?(@file) 
    @log.info("Deleted id list file.")
    ::File.delete(@file)
  end
end

#to_hash ⇒ Object

Returns a hash of image ids registered from this instance. The keys are image ids, the values contain metadata (like “storage_type”) Intended to be used in a loop. For Example:

images = RightImage::IdList.new(Chef::Log).to_hash
images.each do |id, params|
  ...
end



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# File 'lib/id_list.rb', line 39

def to_hash
  list_load
  @log.info("Loaded #{(@list)?"existing":"empty"} id list.")
  @list
end