Class: OsCtld::Commands::Container::Import

Inherits:
Logged
  • Object
show all
Defined in:
lib/osctld/commands/container/import.rb

Instance Method Summary collapse

Methods inherited from Logged

#base_execute

Instance Method Details

#execute(pool) ⇒ Object 



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# File 'lib/osctld/commands/container/import.rb', line 11

def execute(pool)
  error!('the pool is disabled') unless pool.active?

  if opts[:map_mode] && !Container::MAP_MODES.include?(opts[:map_mode])
    error!('invalid map mode')
  end

  File.open(opts[:file], 'r') do |f|
    import(pool, f, opts[:file])
  end

  ok
end

#find ⇒ Object 



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# File 'lib/osctld/commands/container/import.rb', line 7

def find
  DB::Pools.get_or_default(opts[:pool]) || error!('pool not found')
end

#import(pool, io, image_file) ⇒ Object (protected) 



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# File 'lib/osctld/commands/container/import.rb', line 27

def import(pool, io, image_file)
  importer = Container::Importer.new(
    pool,
    io,
    ct_id: opts[:as_id],
    image_file:
  )
  importer.load_metadata

  unless importer.has_ct_id?
    error!('the image does not include container id, specify it')
  end

  ctid = importer.ct_id

  if DB::Containers.find(ctid, pool)
    error!("container #{pool.name}:#{ctid} already exists")
  end

  if opts[:as_user]
    user = DB::Users.find(opts[:as_user], pool)
    error!('user not found') unless user

  else
    user = importer.get_or_create_user
  end

  if opts[:as_group]
    group = DB::Groups.find(opts[:as_group], pool)
    error!('group not found') unless group

  else
    group = importer.get_or_create_group
  end

  ct = importer.load_ct(
    id: ctid,
    user:,
    group:,
    dataset: opts[:dataset] && OsCtl::Lib::Zfs::Dataset.new(
      opts[:dataset],
      base: opts[:dataset]
    ),
    ct_opts: {
      map_mode: opts[:map_mode] || 'native',
      devices: false, # skip device initialization, see below
      staged: true
    }
  )

  manipulate(ct) do
    builder = Container::Builder.new(ct.new_run_conf, cmd: self)

    # TODO: check for conflicting configuration
    #   - ip addresses, mac addresses

    if !builder.valid?
      error!(builder.errors.join('; '))

    elsif !builder.register
      error!("container #{pool.name}:#{ctid} already exists")
    end

    begin
      case opts[:missing_devices]
      when 'provide'
        ct.devices.ensure_all

      when 'remove'
        ct.devices.remove_missing

      else
        begin
          ct.devices.check_all_available!
        rescue DeviceNotAvailable, DeviceModeInsufficient => e
          error!(e.message)
        end
      end

      progress('Creating datasets')
      importer.create_datasets(
        builder,
        accept_existing: !opts[:dataset].nil?,
        properties: opts[:zfs_properties] || {}
      )

      builder.setup_lxc_home

      progress('Importing rootfs')
      importer.import_all_datasets(builder)

      builder.setup_ct_dir
      builder.setup_rootfs

      # Delayed initialization, when we have ensured all required devices
      # are present, or that missing devices were removed and rootfs is present,
      # so we can create device nodes
      ct.devices.init

      ct.save_config
      builder.setup_lxc_configs
      builder.setup_log_file
      builder.setup_user_hook_script_dir
      importer.install_user_hook_scripts(ct)
      builder.monitor

      if ct.netifs.any?
        progress('Reconfiguring LXC usernet')
        call_cmd(Commands::User::LxcUsernet)
      end

      ct.state = :complete

      ok
    rescue StandardError
      progress('Error occurred, cleaning up')
      builder.cleanup(dataset: !opts[:dataset])
      raise
    end
  end
end