class Facter::Resolvers::Containers
Constants
- INFO
Private Class Methods
extract_for_nspawn(output_environ)
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# File lib/facter/resolvers/containers.rb, line 46 def extract_for_nspawn(output_environ) nspawn = /container=systemd-nspawn/ =~ output_environ if nspawn vm = 'systemd_nspawn' info = Util::FileHelper.safe_read('/etc/machine-id', nil) end [info ? { 'id' => info.strip } : {}, vm] end
extract_vm_and_info(output_docker, output_lxc, lxc_from_environ)
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# File lib/facter/resolvers/containers.rb, line 34 def extract_vm_and_info(output_docker, output_lxc, lxc_from_environ) vm = nil if output_docker vm = 'docker' info = output_docker[1] end vm = 'lxc' if output_lxc || lxc_from_environ info = output_lxc[1] if output_lxc [info ? { INFO[vm] => info } : {}, vm] end
post_resolve(fact_name)
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# File lib/facter/resolvers/containers.rb, line 14 def post_resolve(fact_name) @fact_list.fetch(fact_name) { read_cgroup(fact_name) } end
read_cgroup(fact_name)
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# File lib/facter/resolvers/containers.rb, line 18 def read_cgroup(fact_name) output_cgroup = Util::FileHelper.safe_read('/proc/1/cgroup', nil) output_environ = Util::FileHelper.safe_read('/proc/1/environ', nil) return unless output_cgroup && output_environ output_docker = %r{docker/(.+)}.match(output_cgroup) output_lxc = %r{^/lxc/([^/]+)}.match(output_cgroup) lxc_from_environ = /container=lxc/ =~ output_environ info, vm = extract_vm_and_info(output_docker, output_lxc, lxc_from_environ) info, vm = extract_for_nspawn(output_environ) unless vm @fact_list[:vm] = vm @fact_list[:hypervisor] = { vm.to_sym => info } if vm @fact_list[fact_name] end