Class: Gallus::Repository

Inherits:
Object
  • Object
show all
Defined in:
lib/gallus/repository.rb

Overview

Internal: Wee need a place to keep track of registered loggers and their parents. This little repository class handles this task in a thread-safe manner.

Constant Summary collapse

PARENT_DELIMITER = 
'::'

Class Method Summary collapse

Class Method Details

.all ⇒ Object

Internal: Returns all registered loggers.



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# File 'lib/gallus/repository.rb', line 10

def self.all
  @all ||= {}
end

.delete_with_children(name) ⇒ Object

Internal: For testing purposes we need to be able to delete logger alongside with all its children.



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# File 'lib/gallus/repository.rb', line 30

def self.delete_with_children(name)
  @mutex.synchronize do
    all.keys.each { |k| all.delete(k) if k.start_with?(name + PARENT_DELIMITER) }
    all.delete(name)
  end
end

.find_parent(name) ⇒ Object

Internal: There must be a way to find parent logger for given class name. For example, looking up parent for Foo::Bar::Baz logger it’ll look up for Foo::Bar, then falling back to Foo and eventually to root logger if nothing found.



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# File 'lib/gallus/repository.rb', line 17

def self.find_parent(name)
  parent, name = nil, name.dup

  while parent.nil?
    name = name.split(PARENT_DELIMITER)[0..-2].join(PARENT_DELIMITER)
    parent = all[name]
    break if name.empty?
  end

  parent
end

.get_or_create_logger(name, &block) ⇒ Object

Internal: We obviously need a way to create logger or retrieve it by name if already registered. Creation of logger causes configuration to be inherited from parent (or root) logger.



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# File 'lib/gallus/repository.rb', line 39

def self.get_or_create_logger(name, &block)
  name, log = name.to_s, nil

  @mutex.synchronize do
    if log = all[name]
      yield log if block_given?
    else
      all[name] = (log = Class.new(Log).new(find_parent(name), name, &block))
    end
  end

  log
end