vagrant/plugins/providers/virtualbox/action/prepare_nfs_settings.rb

97 lines
3.5 KiB
Ruby

module VagrantPlugins
module ProviderVirtualBox
module Action
class PrepareNFSSettings
include Vagrant::Util::Retryable
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")
add_ips_to_env!(env)
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?
@machine.config.vm.synced_folders.any? { |_, opts| opts[:type] == :nfs }
end
# Extracts the proper host and guest IPs for NFS mounts and stores them
# in the environment for the SyncedFolder action to use them in
# mounting.
#
# The ! indicates that this method modifies its argument.
def add_ips_to_env!(env)
adapter, host_ip = find_host_only_adapter
machine_ip = nil
machine_ip = read_machine_ip(adapter) if adapter
raise Vagrant::Errors::NFSNoHostonlyNetwork if !host_ip || !machine_ip
env[:nfs_host_ip] = host_ip
env[:nfs_machine_ip] = machine_ip
end
# Finds first host only network adapter and returns its adapter number
# and IP address
#
# @return [Integer, String] adapter number, ip address of found host-only adapter
def find_host_only_adapter
@machine.provider.driver.read_network_interfaces.each do |adapter, opts|
if opts[:type] == :hostonly
@machine.provider.driver.read_host_only_interfaces.each do |interface|
if interface[:name] == opts[:hostonly]
return adapter, interface[:ip]
end
end
end
end
nil
end
# Returns the IP address of the guest by looking at vbox guest property
# for the appropriate guest adapter.
#
# For DHCP interfaces, the guest property will not be present until the
# guest completes
#
# @param [Integer] adapter number to read IP for
# @return [String] ip address of adapter
def read_machine_ip(adapter)
# vbox guest properties are 0-indexed, while showvminfo network
# interfaces are 1-indexed. go figure.
guestproperty_adapter = adapter - 1
# we need to wait for the guest's IP to show up as a guest property.
# retry thresholds are relatively high since we might need to wait
# for DHCP, but even static IPs can take a second or two to appear.
retryable(retry_options.merge(on: Vagrant::Errors::VirtualBoxGuestPropertyNotFound)) do
@machine.provider.driver.read_guest_ip(guestproperty_adapter)
end
rescue Vagrant::Errors::VirtualBoxGuestPropertyNotFound
# this error is more specific with a better error message directing
# the user towards the fact that it's probably a reportable bug
raise Vagrant::Errors::NFSNoGuestIP
end
# Separating these out so we can stub out the sleep in tests
def retry_options
{tries: 15, sleep: 1}
end
end
end
end
end