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

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

Instance Attribute Summary

Attributes inherited from Base

#client, #client_handler, #id, #opts

Instance Method Summary collapse

Methods inherited from Logged

#base_execute

Methods inherited from Base

#base_execute, #call_cmd, #call_cmd!, #error, #error!, handle, #handled, #indirect?, #initialize, #manipulate, #manipulation_holder, #ok, #progress, #request_stop, run, run!

Constructor Details

This class inherits a constructor from OsCtld::Commands::Base

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?

  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 23

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: {
      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

    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?)

    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
  end
end