Module: DataMapper

Defined in:
lib/base/datamapper_l.rb

Defined Under Namespace

Modules: Migrations, Model, Resource Classes: Collection, GlobalMutex

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.lock ⇒ Object (readonly)

Returns the value of attribute lock.



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# File 'lib/base/datamapper_l.rb', line 37

def lock
  @lock
end

Class Method Details

.initialize_lock_file(lock_file) ⇒ Object 



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# File 'lib/base/datamapper_l.rb', line 55

def initialize_lock_file(lock_file)
  FileUtils.mkdir_p(File.dirname(lock_file))
  File.open(lock_file, 'w') do |file|
    file.truncate(0)
  end
  @lock = GlobalMutex.new(lock_file)
end

.original_setup ⇒ Object

extend DataMapper.setup parameters for a new :lock_file options new setup can be called as following: DataMapper.setup(<name>, <String>, :lock_file => file) DataMapper.setup(<name>, <Addressable::URI>, :lock_file => file) DataMapper.setup(<name>, <other_connection_options, :lock_file => file>)



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# File 'lib/base/datamapper_l.rb', line 44

alias original_setup setup

.setup(*args) ⇒ Object 



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# File 'lib/base/datamapper_l.rb', line 45

def setup(*args)
  unless @lock
    lock_file = args[1][:lock_file] if args.size == 2 && args[1].kind_of?(Hash)
    lock_file = args[2][:lock_file] if args.size == 3
    lock_file ||= '/var/vcap/sys/run/LOCK'
    initialize_lock_file(lock_file)
  end
  original_setup(*(args[0..1]))
end