Sha256: 797764d46f65cc5ee8fd2e4d410cb7f24702b1c1a2b6367a3bcb3f97080508df
Contents?: true
Size: 754 Bytes
Versions: 21
Compression:
Stored size: 754 Bytes
Contents
require 'fileutils'
#
# Keep track of dependent VMs.
#
# Poor man's race condition defense - touch and rm files in a directory and count them.
#
module Landrush
class DependentVMs
extend Enumerable
def self.each(&block)
(dir.directory? ? dir.children : []).each(&block)
end
def self.add(hostname)
FileUtils.touch(file_for(hostname))
end
def self.remove(hostname)
file_for(hostname).tap { |f| f.delete if f.exist? }
end
def self.list
self.map { |path| path.basename.to_s }
end
def self.clear!
dir.rmtree
end
def self.file_for(hostname)
dir.join(hostname)
end
def self.dir
Landrush.working_dir.join('dependent_vms').tap(&:mkpath)
end
end
end
Version data entries
21 entries across 21 versions & 1 rubygems