Quick patch to enable Capistrano to use Syslog via the Logging gem.

capistrano_syslog.rb

# Workaround in case Logging symbol is partially loaded/defined
Object.send(:remove_const, :Logging) if defined?(Logging)

# http://gemcutter.org/gems/logging
require 'logging'

# Use Syslog
class Capistrano::Logger
  LOGGER_NAME = "capistrano"
  
  def log(level, message, line_prefix=nil)
    return unless level <= self.level
    logger.level = convert(self.level)
    indent = "%*s" % [MAX_LEVEL, "*" * (MAX_LEVEL - level)]
    (RUBY_VERSION >= "1.9" ? message.lines : message).each do |line|
      msg = line_prefix ? "#{indent} [#{line_prefix}] #{line.strip}" : "#{indent} #{line.strip}"
      logger.add convert(level), msg
    end
  end

private

  # Capistrano log levels are (sort of) the opposite of convention.
  def convert(level)
    [MAX_LEVEL - level, 0].max
  end

  def logger
    unless defined?(@logger)
      @logger = Logging::Logger[LOGGER_NAME]
      @logger.add_appenders(Logging::Appenders::Stderr.new)
      @logger.add_appenders(Logging::Appenders::Syslog.new(LOGGER_NAME, :facility => Syslog::Constants::LOG_USER))
    end
    @logger
  end
end