eric

class NetworkLatency < Scout::Plugin
  OPTIONS=<<-EOS
    host:
      label: Host
      notes: The remote host to measure. Defaults to the default gateway if none is specified.
    count:
      label: Count
      notes: Number of samples to take
      default: 5
  EOS

eric

From 53402e071c7f9d4646bd98c5e5d5e97e69073f3a Mon Sep 17 00:00:00 2001
From: Eric Lindvall <[email protected]>
Date: Fri, 27 May 2011 12:46:00 -0700
Subject: [PATCH] Only deallocate the frame if it isn't NULL.

---
 app_swift.c |   40 +++++++++++++++++++++-------------------
 1 files changed, 21 insertions(+), 19 deletions(-)

diff --git a/app_swift.c b/app_swift.c

eric

# A little helper from _why
class Object
  def metaclass
    class << self; self; end
  end
end

module A
  def self.foo
    puts "yes"

eric

#!/usr/bin/env ruby

require 'nokogiri'
require 'open-uri'
require 'notifo'

class BeatportBetaNotifier
  SLEEP_TIMEOUT = 10
  BEATPORT_URL  = 'http://beta.beatport.com/beta'
  

eric

Setting up syslog logging on Heroku with Sinatra 1.2.x

1. Update your Gemfile to include:

gem 'remote_syslog_logger'

3. Modify your config.ru to match the example one below.

4. Setup REMOTE_SYSLOG_URI environment variable

eric

diff --git a/lib/rollout.rb b/lib/rollout.rb
index 4727b97..fe469f8 100644
--- a/lib/rollout.rb
+++ b/lib/rollout.rb
@@ -1,7 +1,10 @@
 class Rollout
-  def initialize(redis)
-    @redis  = redis
-    @groups = {"all" => lambda { |user| true }}
+  attr_accessor :population

eric

[1 : 0] eric@morizo:/Users/eric > irb
>> regex = /\A(?:%[0-9a-fA-F]{2}|[^%]+)*\z/ 
=> /\A(?:%[0-9a-fA-F]{2}|[^%]+)*\z/
>> str = "http%3A%2F%2Fwww.google.com%2Furl%3Fsa%3Dt%26source%3Dweb%26cd%3D1%26sqi%3D2%26ved%3D0CCkQFjAA%26url%3Dhttp%253A%252F%252Fnd.edu%252F%26rct%3Dj%"
=> "http%3A%2F%2Fwww.google.com%2Furl%3Fsa%3Dt%26source%3Dweb%26cd%3D1%26sqi%3D2%26ved%3D0CCkQFjAA%26url%3Dhttp%253A%252F%252Fnd.edu%252F%26rct%3Dj%"
>> regex =~ str

eric

Posted to the REE Google Group as well: https://groups.google.com/forum/#!topic/emm-ruby/EBkMfFpk40A

A week back I innocently updated Sinatra on an app which in turn updated Rack. Since then, I've had crazy hung passenger processes that just gobble up CPU like it is going out of style.

After spending a few days trying everything I knew to to fix it, today I got help from a friend (Eric Lindvall) and dug in with strace, rbtrace, gdb, and gdb.rb and found the issue. Rack 1.3.0 tests a regex against a URL and it causes things to hang.

eric

class YourThing
  def self.connection
    @connection ||= Faraday::Connection.new do |b|
      b.use Faraday::Request::UrlEncoded 
      # and all the rest
    end
  end
  
  def connection
    @connection ||= begin

eric

# If your workers are inactive for a long period of time, they'll lose
# their MySQL connection.
#
# This hack ensures we re-connect whenever a connection is
# lost. Because, really. why not?
#
# Stick this in RAILS_ROOT/config/initializers/connection_fix.rb (or somewhere similar)
#
# From:
#   http://coderrr.wordpress.com/2009/01/08/activerecord-threading-issues-and-resolutions/