cgoldberg

import os

def got_root():
    """check if we are running as root."""
    if os.geteuid() == 0:
        return True
    return False

cgoldberg

#!/bin/bash

# Bounce services and print start/stop messages to console and /var/log/syslog.
logger -s Restarting all processes controlled by supervisor now...
logger -s $(/usr/bin/supervisorctl restart all)

# Scheduled by system cron to run every hour:
# 0 */1 * * * /deploy/bounce_services.sh

cgoldberg

SQLite as a test database?

One way to create isolate integration tests is to tear down and recreate database tables for every single test. This ensures every test starts with a clean and known state. However, achieving this with MySQL is an expensive (slow) operation and would add too much execution time between tests.

Tracelons uses SQLAlchemy as an ORM. Since the MySQL database is abtracted behind this layer, we could switch test database providers to SQLite. SQLite can be run in-memory, allowing fast teardowns of the test database. Coupled with fast schema creation, this enables very fast database operations during test runs.

However, there are some drawbacks to using SQLite as a replacement for MySQL during testing:

• Some tooling in the tracelons repo is built specifically for MySQL and would require changes to work with SQLite.
• SQLite does not have the same features, and does not enforce the same rules as MySQL. Therefore, it differs from production and could possibly allow tests to pass t

cgoldberg

#!/usr/bin/env python
#
# walk a directory tree recursively.
# print total file count and size.
# Corey Goldberg, 2015

import os

start_dir = '/mnt/wd-green/Tunes'

cgoldberg

def login(email, password, base_url='https://courses.edx.org'):
    """Login via HTTP and parse sessionid from the cookie."""
    r = requests.get('{}/login'.format(base_url))
    csrf = r.cookies['csrftoken']
    payload = {'email': email, 'password': password}
    cookies = {'csrftoken': csrf}
    headers = {'referer': '{}/login'.format(base_url), 'X-CSRFToken': csrf}
    r = requests.post('{}/user_api/v1/account/login_session/'.format(base_url),
                      data=payload, cookies=cookies, headers=headers)
    try:

cgoldberg

#!/usr/bin/env python

import collections
import re
from operator import itemgetter
import urlparse
import numpy

import sys

cgoldberg

#!/usr/bin/env python

import collections
import re
from operator import itemgetter
import numpy


DATA_FILE = 'perflog-everything-onload.csv'
NUM_RESULTS = 50

cgoldberg

/* send a metric to hosted graphite via HTTP POST (async). */
 
function sendMetricToGraphite(metricName, value) {
    var apiKey = YOUR-API-KEY;
    var url = "https://" + apiKey + "@www.hostedgraphite.com/api/v1/sink";
    var request = new XMLHttpRequest();
    request.open("POST", url, true);
    request.send(metricName + " " + value);
};

cgoldberg

#!/usr/bin/env python3
#
# This example adds testtools Details from a testtools TestCase.
#
# For more information about: testtools, Details, and Content Objects, visit:
#  * https://testtools.readthedocs.org/en/latest/for-test-authors.html#details

from testtools import TestCase
from testtools.content import (
    ContentType,

cgoldberg

#!/usr/bin/env python3

import logging
import re

from subunit import ByteStreamToStreamResult
from testtools import StreamToExtendedDecorator, TestResult


logging.basicConfig(level='INFO')