Hook up provider with some "placeholder" actions

This commit is contained in:
Fabio Rehm 2013-02-28 00:21:59 -03:00
parent faa2aaa6ab
commit 1bdd3f87a6
2 changed files with 226 additions and 0 deletions

215
lib/vagrant-lxc/actions.rb Normal file
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@ -0,0 +1,215 @@
# TODO: Split action classes into their own files
module Vagrant
module LXC
module Actions
# This action is responsible for reloading the machine, which
# brings it down, sucks in new configuration, and brings the
# machine back up with the new configuration.
def self.action_reload
Vagrant::Action::Builder.new.tap do |b|
b.use CheckLXC
b.use Vagrant::Action::Builtin::Call, Created do |env1, b2|
if !env1[:result]
b2.use VagrantPlugins::ProviderVirtualBox::Action::MessageNotCreated
next
end
b2.use Vagrant::Action::Builtin::ConfigValidate
b2.use action_halt
b2.use action_start
end
end
end
# We could do this here as VirtualBox does, but at least for now its better
# to be explicit and have the full constant name in order to easily spot
# what we implemented and what is builtin on Vagrant.
#
# include Vagrant::Action::Builtin
# This action boots the VM, assuming the VM is in a state that requires
# a bootup (i.e. not saved).
def self.action_boot
Vagrant::Action::Builder.new.tap do |b|
b.use ClearForwardedPorts
b.use Vagrant::Action::Builtin::Provision
b.use Vagrant::Action::Builtin::EnvSet, :port_collision_repair => true
b.use PrepareForwardedPortCollisionParams
b.use ClearSharedFolders
b.use ShareFolders
b.use Network
b.use ForwardPorts
b.use HostName
b.use SaneDefaults
b.use Customize
b.use Boot
end
end
# This action starts a container, assuming it is already created and exists.
# A precondition of this action is that the container exists.
def self.action_start
Vagrant::Action::Builder.new.tap do |b|
b.use CheckLXC
b.use Vagrant::Action::Builtin::ConfigValidate
b.use Vagrant::Action::Builtin::Call, IsRunning do |env, b2|
# If the VM is running, then our work here is done, exit
next if env[:result]
# TODO: Check if has been saved / frozen and resume
b2.use action_boot
end
end
end
# This action brings the machine up from nothing, including creating the
# container, configuring metadata, and booting.
def self.action_up
Vagrant::Action::Builder.new.tap do |b|
b.use CheckLXC
b.use Vagrant::Action::Builtin::ConfigValidate
b.use Vagrant::Action::Builtin::Call, Created do |env, b2|
# If the VM is NOT created yet, then do the setup steps
if !env[:result]
b2.use Create
# We'll probably have other actions down here...
end
end
b.use action_start
end
end
# This is the action that is primarily responsible for halting
# the virtual machine, gracefully or by force.
def self.action_halt
Vagrant::Action::Builder.new.tap do |b|
b.use CheckLXC
b.use Vagrant::Action::Builtin::Call, Created do |env, b2|
if env[:result]
# TODO: If is paused, should resume and then halt
# TODO: If could not gracefully halt, force it
# TODO: b2.use Vagrant::Action::Builtin::GracefulHalt, :poweroff, :running
unless env[:machine].state.off?
puts 'TODO: Halt container using Vagrant::Action::Builtin::GracefulHalt'
env[:machine].state.update!(:poweroff)
end
else
b2.use VagrantPlugins::ProviderVirtualBox::Action::MessageNotCreated
end
end
end
end
# This is the action that is primarily responsible for completely
# freeing the resources of the underlying virtual machine.
def self.action_destroy
Vagrant::Action::Builder.new.tap do |b|
b.use CheckLXC
b.use Vagrant::Action::Builtin::Call, Created do |env1, b2|
if !env1[:result]
b2.use MessageNotCreated
next
end
# TODO: Implement our own DestroyConfirm or propose a builtin action for Vagrant core
b2.use Vagrant::Action::Builtin::Call, VagrantPlugins::ProviderVirtualBox::Action::DestroyConfirm do |env2, b3|
if env2[:result]
b3.use Vagrant::Action::Builtin::ConfigValidate
b3.use Vagrant::Action::Builtin::EnvSet, :force_halt => true
b3.use action_halt
b3.use Destroy
# TODO: VirtualBox provider has a CleanMachineFolder action, do we need something similar?
# TODO: VirtualBox provider has a DestroyUnusedNetworkInterfaces action, do we need something similar?
else
# TODO: Implement our own DestroyConfirm or propose a builtin action for Vagrant core
b3.use VagrantPlugins::ProviderVirtualBox::Action::MessageWillNotDestroy
end
end
end
end
end
class BaseAction
def initialize(app, env)
@app = app
end
def call(env)
puts "TODO: Implement #{self.class.name}"
@app.call(env)
end
end
class Created < BaseAction
def call(env)
# Set the result to be true if the machine is created.
env[:result] = env[:machine].state.created?
# Call the next if we have one (but we shouldn't, since this
# middleware is built to run with the Call-type middlewares)
@app.call(env)
end
end
class IsRunning < BaseAction
def call(env)
# Set the result to be true if the machine is created.
env[:result] = env[:machine].state.running?
# Call the next if we have one (but we shouldn't, since this
# middleware is built to run with the Call-type middlewares)
@app.call(env)
end
end
class Create < BaseAction
def call(env)
puts "TODO: Create container"
env[:machine].id = 'TODO-set-a-proper-machine-id' unless env[:machine].id
@app.call env
end
end
class Destroy < BaseAction
def call(env)
puts "TODO: Destroy container"
env[:machine].id = nil
env[:machine].state.update!(:not_created)
@app.call env
end
end
class Boot < BaseAction
def call(env)
puts 'TODO: Start container'
env[:machine].state.update!(:running)
@app.call env
end
end
# TODO: Check if our requirements are met.
class CheckLXC < BaseAction; end
# TODO: Implement folder sharing with "mount"
class ShareFolders < BaseAction; end
# TODO: Sets up all networking for the container instance. This includes
# host only networks, bridged networking, forwarded ports, etc.
class Network < BaseAction; end
# TODO: Implement port forwarding with rinetd
class ForwardPorts < BaseAction; end
# TODO: Find out which defaults are sane for LXC ;)
class SaneDefaults < BaseAction; end
# TODO: Find out if the actions below will be needed
class ClearForwardedPorts < BaseAction; end
class PrepareForwardedPortCollisionParams < BaseAction; end
class ClearSharedFolders < BaseAction; end
class HostName < BaseAction; end
class Customize < BaseAction; end
end
end
end

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require "vagrant-lxc/actions"
require "vagrant-lxc/machine_state" require "vagrant-lxc/machine_state"
require "log4r" require "log4r"
@ -11,6 +12,16 @@ module Vagrant
@machine = machine @machine = machine
end end
# @see Vagrant::Plugin::V1::Provider#action
def action(name)
# Attempt to get the action method from the Action class if it
# exists, otherwise return nil to show that we don't support the
# given action.
action_method = "action_#{name}"
return LXC::Actions.send(action_method) if LXC::Actions.respond_to?(action_method)
nil
end
def state def state
LXC::MachineState.new(@machine) LXC::MachineState.new(@machine)
end end