Log directly to Papertrail or any remote syslog target from Heroku

DISCLAIMER.md

This is obsolete

This code is no longer needed. Heroku has provided syslog drains for all users for free.

For better Heroku logging with Papertrail, check this out:

http://help.papertrailapp.com/kb/hosting-services/heroku#standalone

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FORMER_README.md

Setting up syslog logging on Heroku

1. Update your Gemfile

gem 'remote_syslog_logger'

2. Add the initializer

Take the example initializers (see below) for Rails 2 and 3 and put the correct one in config/initializers/.

3. Setup SYSLOG_URL environment variable

$ heroku config:add SYSLOG_URL=syslog://host.name.com:port/program

If you don't have a syslog target, get one for free from Papertrail.

That's it

On your next deploy you will be logging to that syslog host.

rails_2_syslog_logger_initializer.rb

if ENV["SYSLOG_URL"]
  require "remote_syslog_logger"
  require "uri"

  # redefine Rails.logger
  def Rails.logger
    @@logger ||= begin
      url = URI.parse(ENV["SYSLOG_URL"])
      logger = RemoteSyslogLogger.new(url.host, url.port, :program => url.path[1..-1])
      logger.level = Logger::INFO
      logger
    end
  end

  # borrowed from Rails::Initializer#initialize_framework_logging
  ([ :active_record, :action_controller, :action_mailer ] & Rails.configuration.frameworks).each do |framework|
    framework.to_s.camelize.constantize.const_get("Base").logger = Rails.logger
  end
  ActiveSupport::Dependencies.logger = Rails.logger
  Rails.cache.logger = Rails.logger
end

rails_3_syslog_logger_initializer.rb

if ENV["SYSLOG_URL"]
  require "remote_syslog_logger"
  require "uri"

  url = URI.parse(ENV["SYSLOG_URL"])

  logger = RemoteSyslogLogger.new(url.host, url.port, :program => url.path[1..-1])
  logger.level = Logger::INFO

  Rails.logger = Rails.application.config.logger = ActionController::Base.logger = Rails.cache.logger = logger
end

Nice! I'll probably be using this.