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Steven Harman stevenharman

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@stevenharman
stevenharman / sidekiq.rb
Last active March 6, 2020 17:35
The best solution I've found for reliably configuring Sidekiq's ActiveRecord connection pool size on Heroku.
# /config/initializers/sidekiq.rb
current_web_concurrency = Proc.new do
web_concurrency = ENV['WEB_CONCURRENCY']
web_concurrency ||= Puma.respond_to?
(:cli_config) && Puma.cli_config.options.fetch(:max_threads)
web_concurrency || 16
end
local_redis_url = Proc.new do
@stevenharman
stevenharman / import_match_report.js.coffee
Created January 21, 2014 00:47
Wrapping AngularJS $http calls in a promise, while also being able to massage the returned data, is pretty common. Especially when tucking that $http concerns behind a service. So, I made a `defer` helper that will create a promise for me!
angular.module('brewdegaCellar').factory 'ImportMatchReport', ($http, $q) ->
defer = (f)->
deferred = $q.defer()
f(deferred)
return deferred.promise
show: ()->
defer (deferred)->
$http.get('/import/match_report')
.success((data)-> deferred.resolve(data.matchReport))
@stevenharman
stevenharman / _angularjs_and_rails_asset_pipeline.md
Last active April 30, 2016 23:20
Load the Angular.js $templateCache while building assets for Rails Asset Pipeline. Be sure in require the `templates` module as a dependency of your Angular.js app.

AngularJS + Rails Asset Pipeline

This is my hand-rolled solution for getting Angular assets (Controllers, Models, Directives, Templates, etc.) integrated into the Rails Asset Pipeline.

Templates and the $templateCache

Of particular note: this hack will also load the AngularJS $templateCache with your templates, while allowing you to use Slim, ERB, etc. to write your templates.

@stevenharman
stevenharman / import_match_job.rb
Last active December 28, 2015 09:29
Creating boundaries and pushing for objects to be context-free (or at least as low context) goes a long way. Here is an example of the kind of background jobs/workers I tend to write in Ruby/Ruby on Rails apps. This particular example is pulled straight from the http://brewdega.com source code.
require 'sidekiq'
module Import
class MatchJob
include Sidekiq::Worker
attr_reader :agent, :ledgers
# A facade for consumers, keeping them divorced from the Sidekiq API
def self.match(import_ledger)
@stevenharman
stevenharman / postgres_open_connections.sql
Last active April 3, 2018 17:23
View open connections to a PostgreSQL 9.2+ database. Quite useful when you're seeing ActiveRecord::ConnectionTimeoutError on Heroku.
-- On Heroku:
-- $ heroku pg:psql
-- An explaination of the columns on the pg_stat_activity table:
-- http://www.postgresql.org/docs/9.2/static/monitoring-stats.html#PG-STAT-ACTIVITY-VIEW
select
pid, application_name, query, waiting, state, state_change
from pg_stat_activity
where usename = current_user
order by state_change desc;
@stevenharman
stevenharman / stage_db.sh
Created September 10, 2013 21:37
Backup one Heroku Postgres database and restore it to another. This is particularly useful for restoring production data to a staging DB (running on a Dev/Basic plan).
#!/bin/sh
set -e
app=${1}
staging_app=staging-${app}
staging_db=`heroku config -a ${staging_app} | grep ^HEROKU_POSTGRESQL | cut -d : -f 1 | sed s/_URL//`
# Create a production backup on Heroku
heroku pgbackups:capture --expire --app ${app}
@stevenharman
stevenharman / fork_db.sh
Last active May 17, 2024 21:20
Fork and promote one Heroku app's Postgres Database to another app.
#!/bin/sh
set -e
app=${1}
staging_app=staging-${app}
db_type=${2:-crane}
old_db=`heroku config -a ${staging_app} | grep ^HEROKU_POSTGRESQL | cut -d : -f 1 | sed s/_URL//`
heroku addons:add heroku-postgresql:${db_type} --fork `heroku config -a ${app} | grep ^DATABASE_URL | cut -d : -f 2-5` -a ${staging_app}
@stevenharman
stevenharman / faraday-request-xml.rb
Created August 20, 2013 23:46
An example of a Request middleware to send the body as XML
module FaradayMiddleware
class XmlRequest < Faraday::Middleware
dependency do
require 'active_support/all'
end
def call(env)
if env[:method] == :post
body = env[:body]
first_key = body.keys.first
@stevenharman
stevenharman / bin-puma
Last active December 21, 2015 04:39
A wrapper script that will start a local SSH tunnel (only in development environment), and then start Puma as normal. I use this with foreman from a Procfile.
#!/usr/bin/env sh
CURRENT_ENV=${RACK_ENV:-development}
# For the payment gateway callback URL
if [ "$CURRENT_ENV" == "development" ]; then
PORT_SSL=$(expr $PORT + 1)
echo "starting an SSL tunnel from :$PORT_SSL --(--)--> :$PORT"
bundle exec tunnels $PORT_SSL 0.0.0.0:$PORT &
fi
@stevenharman
stevenharman / generate_ssl_cert
Created August 16, 2013 14:41
Generate a self-signed cert, update your hosts file, and add it to your OS X Keychain for local SSL success!
#!/usr/bin/env sh
echo "Creating a self-signed certificate..."
openssl req -new -newkey rsa:2048 -sha1 -days 3650 -nodes -x509 -subj "/C=US/ST=Georgia/L=Atlanta/O=BNR/CN=localhost.ssl" -keyout config/server.key -out config/server.crt
if ! grep -q "\blocalhost\.ssl\b" /private/etc/hosts; then
echo "Adding localhost.ssl to your hosts file..."
echo "127.0.0.1 localhost.ssl" | sudo tee -a /private/etc/hosts
fi