justindossey’s gists

justindossey / gist:2063267

Created March 17, 2012 17:38

MongoMapper-- check that replicas are within a minute of primary

	def all_replicas_in_sync?(verbose=false)
	in_sync = true
	# connect to the primary
	mongo = Mongo::Connection.new(*MongoMapper.connection.primary)
	db = mongo.db('local')
	last_op=db.collection('oplog.rs').find.sort([['$natural',-1]]).limit(1).to_a[0]
	db.collection('slaves').find().to_a.each do \|slave\|
	opdiff = last_op['ts'].increment - slave['syncedTo'].increment
	diff = (last_op['ts'].seconds - slave['syncedTo'].seconds)/1000.0
	in_sync = false if diff > 60

justindossey / gist:2255384

Created March 30, 2012 21:40

Flip read_secondary via MongoMapper

	trap('USR2') do
	# reconnect to MongoDB with read_secondary reversed
	result=MongoMapper.connection.instance_eval('@read_secondary = !@read_secondary')
	logger.notice("#{Time.now}: now reading from #{result ? 'secondary' : 'primary'}")
	end

justindossey / gist:7490942

Last active December 28, 2015 11:08

ruby 187 memory leak with logger in Bunny::Queue#subscribe

	require 'bunny'
	require 'logger'

	class TestLoggerSubscribeMemleak
	def initialize(msg_count=10_000)
	@message_count = msg_count
	@messages_to_write = msg_count
	@connection = Bunny.new(:user=>"test_user", :pass=>"123456", :host=>"localhost", :vhost => "test", :port => 5672)
	@connection.start
	@channel = @connection.create_channel

justindossey / test_fd_subscribe_memleak.rb

Created November 15, 2013 20:33

Non-leaking version of bunny logger memory leak test

	require 'bunny'
	require 'logger'

	class TestLoggerSubscribeMemleak
	def initialize(msg_count=10_000)
	@messages_to_write = msg_count
	@message_count = msg_count
	@connection = Bunny.new(:user=>"jbd_dev_reader", :pass=>"123456", :host=>"localhost", :vhost=>"jbd", :port=>5672)
	@connection.start
	@channel = @connection.create_channel

justindossey / default.rb

Created October 16, 2014 23:14

Chef recipe showing order of lazy evaluation

	node.default.bar.tags = ['tag1-bar']

	file "/tmp/bar.txt" do
	content lazy { node.bar.tags.join(',') }
	end

	ruby_block 'update second tag' do
	block { node.default.bar.tags << 'tag2-bar' }
	only_if { node.default.bar.tags << 'tag3-bar' }
	notifies :create, 'file[/tmp/bar.txt]', :delayed

justindossey / kitchen-output.txt

Created October 16, 2014 23:16

kitchen converge output of bar/default.rb

	Converging 2 resources
	Recipe: bar::default
	* file[/tmp/bar.txt] action create[2014-10-16T23:14:38+00:00] INFO: Processing file[/tmp/bar.txt] action create (bar::default line 13)
	[2014-10-16T23:14:38+00:00] INFO: file[/tmp/bar.txt] created file /tmp/bar.txt

	- create new file /tmp/bar.txt[2014-10-16T23:14:38+00:00] INFO: file[/tmp/bar.txt] updated file contents /tmp/bar.txt

	- update content in file /tmp/bar.txt from none to 4cee35
	--- /tmp/bar.txt 2014-10-16 23:14:38.033893771 +0000
	+++ /tmp/.bar.txt20141016-1369-yghu83 2014-10-16 23:14:38.033893771 +0000

justindossey / proxy_test.rb

Created October 23, 2014 16:04

test various methods of performing HTTP requests from behind a proxy

	#!/usr/bin/env ruby

	require 'net/http'
	require 'open-uri'
	require 'rubygems'
	require 'http' # this is the http gem
	require 'faraday'

	class ProxyTest
	def initialize(url)

justindossey / gist:26784dadf02a6792204d

Created February 6, 2015 16:27

search with defaults

	default_redis_ip = 'localhost'
	master_node = search(:node, 'role:redis-master').first
	default_redis_ip = master_node.ipaddress unless master_node.nil?

justindossey / example.rb

Created February 17, 2015 18:18

update resource to not start until after additional stuff added

	include_recipe 'nginx'
	resources(service: 'nginx').tap do \|r\|
	r.action :enable
	end

	template '/etc/nginx/conf.d/my_file.conf' do
	...
	notifies :start, 'service[nginx]', :delayed
	end

justindossey / gist:ad3b9c9c6283f47e3382

Created March 12, 2015 23:58

erb to yaml

Justin Dossey justindossey