docker.rb
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	require 'facter'
	require 'json'

	docker_command = if Facter.value(:kernel) == 'windows'
	'powershell -c docker'
	else
	'docker'
	end

	def interfaces
	Facter.value(:interfaces).split(',')
	end

	Facter.add(:docker_client_version) do
	setcode do
	docker_version = Facter.value(:docker_version)
	docker_version['Client']['Version'] if docker_version
	end
	end

	Facter.add(:docker_server_version) do
	setcode do
	docker_version = Facter.value(:docker_version)
	docker_version['Server']['Version'] if docker_version
	end
	end

	Facter.add(:docker_version) do
	setcode do
	if Facter::Util::Resolution.which('docker')
	value = Facter::Core::Execution.execute(
	"#{docker_command} version --format '{{json .}}'",
	)
	val = JSON.parse(value)
	end
	val
	end
	end

	Facter.add(:docker) do
	setcode do
	docker_version = Facter.value(:docker_client_version)
	if docker_version !~ %r{1[.][0-9][0-2]?[.]\w+}
	if Facter::Util::Resolution.which('docker')
	docker_json_str = Facter::Util::Resolution.exec(
	"#{docker_command} info --format '{{json .}}'",
	)
	docker = JSON.parse(docker_json_str)
	docker['network'] = {}

	docker['network']['managed_interfaces'] = {}
	network_list = Facter::Util::Resolution.exec('docker network ls \| tail -n +2')
	docker_network_names = []
	network_list.each_line { \|line\| docker_network_names.push line.split[1] }
	docker_network_ids = []
	network_list.each_line { \|line\| docker_network_ids.push line.split[0] }
	docker_network_names.each do \|network\|
	inspect = JSON.parse(Facter::Util::Resolution.exec("docker network inspect #{network}"))
	docker['network'][network] = inspect[0]
	network_id = docker['network'][network]['Id'][0..11]
	interfaces.each do \|iface\|
	docker['network']['managed_interfaces'][iface] = network if iface =~ %r{#{network_id}}
	end
	end
	docker
	end
	end
	end
	end

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