/
prepare_nfs_settings.rb
93 lines (81 loc) · 2.68 KB
/
prepare_nfs_settings.rb
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require 'nokogiri'
require 'socket'
require 'timeout'
module VagrantPlugins
module ProviderLibvirt
module Action
class PrepareNFSSettings
include Vagrant::Action::Builtin::MixinSyncedFolders
def initialize(app,env)
@app = app
@logger = Log4r::Logger.new("vagrant::action::vm::nfs")
end
def call(env)
@machine = env[:machine]
@app.call(env)
if using_nfs?
@logger.info("Using NFS, preparing NFS settings by reading host IP and machine IP")
env[:nfs_machine_ip] = read_machine_ip(env[:machine])
env[:nfs_host_ip] = read_host_ip(env[:nfs_machine_ip])
@logger.info("host IP: #{env[:nfs_host_ip]} machine IP: #{env[:nfs_machine_ip]}")
raise Vagrant::Errors::NFSNoHostonlyNetwork if !env[:nfs_machine_ip] || !env[:nfs_host_ip]
end
end
# We're using NFS if we have any synced folder with NFS configured. If
# we are not using NFS we don't need to do the extra work to
# populate these fields in the environment.
def using_nfs?
!!synced_folders(@machine)[:nfs]
end
# Returns the IP address of the host
#
# @param [Machine] machine
# @return [String]
def read_host_ip(ip)
UDPSocket.open do |s|
if(ip.kind_of?(Array))
s.connect(ip.last, 1)
else
s.connect(ip, 1)
end
s.addr.last
end
end
# Returns the IP address of the guest
#
# @param [Machine] machine
# @return [String]
def read_machine_ip(machine)
# check host only ip
ssh_host = machine.ssh_info[:host]
return ssh_host if ping(ssh_host)
# check other ips
command = "ip addr show | grep -i 'inet ' | grep -v '127.0.0.1' | tr -s ' ' | cut -d' ' -f3 | cut -d'/' -f 1"
result = ""
machine.communicate.execute(command) do |type, data|
result << data if type == :stdout
end
ips = result.chomp.split("\n").uniq
@logger.info("guest IPs: #{ips.join(', ')}")
ips.each do |ip|
next if ip == ssh_host
return ip if ping(ip)
end
end
private
# Check if we can open a connection to the host
def ping(host, timeout = 3)
::Timeout.timeout(timeout) do
s = TCPSocket.new(host, 'echo')
s.close
end
true
rescue Errno::ECONNREFUSED
true
rescue Timeout::Error, StandardError
false
end
end
end
end
end