kauffecup / docker-reddit

Reddit (well, running it on Bluemix)

Prereqs

Services

1. Compose.io PostgreSQL
2. CloudAMQP

Configuring Databases

Configuring Cassandra

This is done for you! Via magical docker compose!

Configuring PostgreSQL

➜ brew install postgresql

Once our cloud hosted instance of PostgreSQL is running in compose, we're going to create a table named reddit:

CREATE DATABASE reddit OWNER admin
CREATE USER reddit WITH PASSWORD 'password';

Note that you don't need to do this - you can configure your deployment to access the default database compose, but that's no fun!

Next we need to define a few functions that our reddit webserver is going to invoke. But first, we log in!

➜ psql "sslmode=require host=<host> port=<port> dbname=reddit user=admin"
Password: <>

The following functions are all from setup_postgres.sh:

reddit=> create or replace function hot(ups integer, downs integer, date timestamp with time zone) returns numeric as $$ select round(cast(log(greatest(abs($1 - $2), 1)) * sign($1 - $2) + (date_part('epoch', $3) - 1134028003) / 45000.0 as numeric), 7) $$ language sql immutable;
CREATE FUNCTION

reddit=> create or replace function score(ups integer, downs integer) returns integer as $$ select $1 - $2 $$ language sql immutable;
CREATE FUNCTION

reddit=> create or replace function controversy(ups integer, downs integer) returns float as $$ select CASE WHEN $1 <= 0 or $2 <= 0 THEN 0 WHEN $1 > $2 THEN power($1 + $2, cast($2 as float) / $1) ELSE power($1 + $2, cast($1 as float) / $2) END; $$ language sql immutable;
CREATE FUNCTION

reddit=> create or replace function ip_network(ip text) returns text as $$ select substring($1 from E'[\\d]+\.[\\d]+\.[\\d]+') $$ language sql immutable;
CREATE FUNCTION

reddit=> create or replace function base_url(url text) returns text as $$ select substring($1 from E'(?i)(?:.+?://)?(?:www[\\d]*\\.)?([^#]*[^#/])/?') $$ language sql immutable;
CREATE FUNCTION

reddit=> create or replace function domain(url text) returns text as $$ select substring($1 from E'(?i)(?:.+?://)?(?:www[\\d]*\\.)?([^#/]*)/?') $$ language sql immutable;
CREATE FUNCTION

Configuring RabbitMQ

This is done for you! Via magical docker compose!

Configuring Mcrouter

This is done for you! Via magical docker compose!

Configuring Memcached

This is done for you! Via magical docker compose!

Building + Running

Make sure that you map reddit.local to your docker-machine's IP

If running locally, make sure to give your docker-machine an obscene amount of memory because the reddit stack is insane:

docker-machine create -d virtualbox --virtualbox-memory 4096 reddit

Once everything is configured, create your myreddit.update file:

docker-compose build

Then to run it:

docker-compose up