Sha256: de63c3b91b864df465c2549562fdc6257cfe15a892d1f17dc6ec1653f91a9253
Contents?: true
Size: 747 Bytes
Versions: 12
Compression:
Stored size: 747 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
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
Server.working_dir.join('dependent_vms').tap(&:mkpath)
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems