Class: OsCtld::DB::Groups

Inherits:
PooledList show all
Defined in:
lib/osctld/db/groups.rb

Instance Attribute Summary

Attributes inherited from List

#objects

Instance Method Summary collapse

Methods inherited from PooledList

#contains?, #find

Methods inherited from List

#contains?, #count, #find, #get, instance, #sync

Constructor Details

#initialize(*_) ⇒ Groups

Returns a new instance of Groups



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# File 'lib/osctld/db/groups.rb', line 13

def initialize(*_)
  super
  @index = {}
end

Instance Method Details

#add(grp) ⇒ Object



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# File 'lib/osctld/db/groups.rb', line 105

def add(grp)
  sync do
    super
    @index[grp.pool.name] ||= {}
    @index[grp.pool.name][grp.name] = grp
  end
end

#by_path(pool, name) ⇒ Object



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# File 'lib/osctld/db/groups.rb', line 122

def by_path(pool, name)
  sync do
    next nil unless @index.has_key?(pool.name)
    @index[pool.name][name]
  end
end

#default(pool) ⇒ Object



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# File 'lib/osctld/db/groups.rb', line 101

def default(pool)
  find('/default', pool)
end

#load_or_create(pool, name, path = nil) ⇒ Object (protected)



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# File 'lib/osctld/db/groups.rb', line 130

def load_or_create(pool, name, path = nil)
  grp = nil
  root = name == '/'
  created = false

  begin
    grp = Group.new(pool, name, root: root, devices: false)

  rescue Errno::ENOENT
    grp = Group.new(pool, name, load: false, root: root)
    grp.configure(path: path, devices: false)
    created = true
  end

  add(grp)
  [grp, created]
end

#remove(grp) ⇒ Object



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# File 'lib/osctld/db/groups.rb', line 113

def remove(grp)
  sync do
    super
    @index[grp.pool.name].delete(grp.name)
    @index.delete(grp.pool.name) if @index[grp.pool.name].empty?
    grp
  end
end

#root(pool) ⇒ Object



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# File 'lib/osctld/db/groups.rb', line 97

def root(pool)
  find('/', pool)
end

#setup(pool) ⇒ Object

Ensures presence of root and default groups



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# File 'lib/osctld/db/groups.rb', line 19

def setup(pool)
  root, created = load_or_create(
    pool,
    '/',
    File.join('osctl', "pool.#{pool.name}")
  )

  if created
    root.devices.init

    root.devices.add_new(
      :char, 1, 3, 'rwm',
      name: '/dev/null',
      inherit: true,
    )
    root.devices.add_new(
      :char, 1, 5, 'rwm',
      name: '/dev/zero',
      inherit: true,
    )
    root.devices.add_new(
      :char, 1, 7, 'rwm',
      name: '/dev/full',
      inherit: true,
    )
    root.devices.add_new(
      :char, 1, 8, 'rwm',
      name: '/dev/random',
      inherit: true,
    )
    root.devices.add_new(
      :char, 1, 9, 'rwm',
      name: '/dev/urandom',
      inherit: true,
    )
    root.devices.add_new(
      :char, 1, 11, 'rwm',
      name: '/dev/kmsg',
      inherit: true,
    )
    root.devices.add_new(
      :char, 5, 0, 'rwm',
      name: '/dev/tty',
      inherit: true,
    )
    root.devices.add_new(
      :char, 5, 1, 'rwm',
    #  name: '/dev/console', # setup by lxc
      inherit: true,
    )
    root.devices.add_new(
      :char, 5, 2, 'rwm',
    #  name: '/dev/ptmx', # setup by lxc
      inherit: true,
    )
    root.devices.add_new(
      :char, 136, '*', 'rwm',
    #  name: '/dev/tty*', # setup by lxc
      inherit: true,
    )
    root.devices.add_new(
      :block, '*', '*', 'm',
      inherit: true,
    )
    root.devices.add_new(
      :char, '*', '*', 'm',
      inherit: true,
    )
    root.devices.apply
    root.save_config

  else
    root.devices.init
  end

  load_or_create(pool, '/default')
end