Class: Console::Resolver

Inherits:
Object
  • Object
show all
Defined in:
lib/console/resolver.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Resolver

Returns a new instance of Resolver.



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# File 'lib/console/resolver.rb', line 62

def initialize
	@names = {}
	
	@trace_point = TracePoint.new(:class, &self.method(:resolve))
end

Class Method Details

.default_resolver(logger, env = ENV) ⇒ Object

You can change the log level for different classes using CONSOLE_$LEVEL env vars.

e.g. ‘CONSOLE_WARN=Acorn,Banana CONSOLE_DEBUG=Cat` will set the log level for the classes Acorn and Banana to `warn` and Cat to `debug`. This overrides the default log level.

You can enable all log levels for a given class by using ‘CONSOLE_ON=MyClass`. Similarly you can disable all logging using `CONSOLE_OFF=MyClass`.



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# File 'lib/console/resolver.rb', line 22

def self.default_resolver(logger, env = ENV)
	# Find all CONSOLE_$LEVEL variables from environment:
	levels = logger.class::LEVELS
		.map{|label, level| [level, env["CONSOLE_#{label.upcase}"]&.split(',')]}
		.to_h
		.compact
	
	off_klasses = env['CONSOLE_OFF']&.split(',')
	on_klasses = env['CONSOLE_ON']&.split(',')
	
	resolver = nil
	
	# If we have any levels, then create a class resolver, and each time a class is resolved, set the log level for that class to the specified level:
	if on_klasses&.any?
		resolver ||= Resolver.new
		
		resolver.bind(on_klasses) do |klass|
			logger.enable(klass, logger.class::MINIMUM_LEVEL - 1)
		end
	end
	
	if off_klasses&.any?
		resolver ||= Resolver.new
		
		resolver.bind(off_klasses) do |klass|
			logger.disable(klass)
		end
	end
	
	levels.each do |level, names|
		resolver ||= Resolver.new
		
		resolver.bind(names) do |klass|
			logger.enable(klass, level)
		end
	end
	
	return resolver
end

Instance Method Details

#bind(names, &block) ⇒ Object 



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# File 'lib/console/resolver.rb', line 68

def bind(names, &block)
	names.each do |name|
		if klass = Object.const_get(name) rescue nil
			yield klass
		else
			@names[name] = block
		end
	end
	
	if @names.any?
		@trace_point.enable
	else
		@trace_point.disable
	end
end

#resolve(trace_point) ⇒ Object 



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# File 'lib/console/resolver.rb', line 88

def resolve(trace_point)
	if block = @names.delete(trace_point.self.to_s)
		block.call(trace_point.self)
	end
	
	if @names.empty?
		@trace_point.disable
	end
end

#waiting? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/console/resolver.rb', line 84

def waiting?
	@trace_point.enabled?
end