Class: OsCtld::Commands::Container::Copy

Inherits:
Logged
  • Object
show all
Includes:
OsCtl::Lib::Utils::Log, OsCtl::Lib::Utils::System
Defined in:
lib/osctld/commands/container/copy.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

#copy_datasets_from(builder, ct) ⇒ Object (protected) 



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# File 'lib/osctld/commands/container/copy.rb', line 77

def copy_datasets_from(builder, ct)
  snaps = []
  src_datasets = ct.datasets
  dst_datasets = [builder.ctrc.dataset] + ct.dataset.descendants.map do |ds|
    OsCtl::Lib::Zfs::Dataset.new(
      File.join(builder.ctrc.dataset.name, ds.relative_name),
      base: builder.ctrc.dataset.name
    )
  end

  # Create datasets
  dst_datasets.each { |ds| builder.create_dataset(ds, mapping: true) }

  # Copy data
  snaps << builder.copy_datasets(src_datasets, dst_datasets)

  if ct.running? && opts[:consistent]
    call_cmd(Commands::Container::Stop, id: ct.id, pool: ct.pool.name)

    snaps << builder.copy_datasets(src_datasets, dst_datasets, from: snaps.last)

    if opts[:restart].nil? || opts[:restart]
      call_cmd(
        Commands::Container::Start,
        id: ct.id,
        pool: ct.pool.name,
        force: true,
        wait: false
      )
    end
  end

  # Cleanup snapshots
  (src_datasets + dst_datasets).each do |ds|
    snaps.each { |s| zfs(:destroy, nil, "#{ds}@#{s}") }
  end
end

#execute(ct) ⇒ Object 



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# File 'lib/osctld/commands/container/copy.rb', line 15

def execute(ct)
  target_pool = opts[:target_pool] ? DB::Pools.find(opts[:target_pool]) : ct.pool
  error!('pool not found') unless target_pool

  if target_pool == ct.pool
    target_user = nil
    target_group = nil

  else
    target_user = DB::Users.find(opts[:target_user] || ct.user.name, target_pool)
    error!('target user not found') unless target_user

    target_group = DB::Groups.find(opts[:target_group] || ct.group.name, target_pool)
    error!('target group not found') unless target_group
  end

  if DB::Containers.contains?(opts[:target_id], target_pool)
    error!("container #{target_pool.name}:#{opts[:target_id]} already exists")
  end

  new_ct = ct.exclusively do
    ct.dup(
      opts[:target_id],
      pool: target_pool,
      user: target_user,
      group: target_group,
      dataset: opts[:target_dataset],
      network_interfaces: opts[:network_interfaces]
    )
  end

  builder = Container::Builder.new(new_ct.new_run_conf, cmd: self)
  error!(builder.errors.join('; ')) unless builder.valid?

  manipulate([ct, new_ct]) do
    unless builder.register
      error!("container #{new_ct.pool.name}:#{new_ct.id} already exists")
    end

    begin
      copy_datasets_from(builder, ct)
      new_ct.save_config
      builder.setup_ct_dir
      builder.setup_lxc_home
      builder.setup_lxc_configs
      builder.setup_log_file
      builder.setup_user_hook_script_dir
      builder.monitor
      new_ct.state = :complete
    rescue StandardError
      progress('Error occurred, cleaning up')
      builder.cleanup(dataset: !opts[:target_dataset])
      raise
    end
  end

  call_cmd!(Commands::User::LxcUsernet)
  ok
end

#find ⇒ Object 



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# File 'lib/osctld/commands/container/copy.rb', line 10

def find
  ct = DB::Containers.find(opts[:id], opts[:pool])
  ct || error!('container not found')
end