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Christopher Smith cbsmith

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@cbsmith
cbsmith / better_random.py
Last active January 4, 2016 10:19
My thoughts on enhancements to make random support a broader set of iterables.
import random
import itertools
def sample(population, k):
"How random.sample should really be defined."
if callable(getattr(population, '__len__', None)) and callable(getattr(population, '__getitem__', None)):
return random.sample(population, min(k, len(population)))
p = iter(population)
@cbsmith
cbsmith / message.proto
Last active January 16, 2016 05:43
Proposed change to Heka message format.
package message;
import "gogo.proto";
option (gogoproto.sizer_all) = true;
option (gogoproto.marshaler_all) = true;
option (gogoproto.unmarshaler_all) = true;
option java_package = "org.mozilla.heka";
option java_outer_classname = "HekaMessage";
@cbsmith
cbsmith / compatible_message.proto
Last active January 16, 2016 05:44
A forward compatible reworking of Heka Message
package message;
import "gogo.proto";
option (gogoproto.sizer_all) = true;
option (gogoproto.marshaler_all) = true;
option (gogoproto.unmarshaler_all) = true;
option java_package = "org.mozilla.heka";
option java_outer_classname = "HekaMessage";
@cbsmith
cbsmith / awscli_functions.sh
Created December 15, 2015 05:13
A handy collection of bash functions to make the aws cli a bit more usable
# Usage: . awscli_functions.sh
# Suggested: add to ~/.bashrc
# This code lazily uses your default profile && region.
# It wouldn't take much to add some logic for using ${PROFILE} and/or ${REGION} as some kind of override.
# Lots more functions would be helpful, but I've been playing with ec2 & vpcs a lot lately, so...
clusters()
{
local __resultvar=$1
local __clusters=$(aws ecs list-clusters | jq -r '.clusterArns[]')
@cbsmith
cbsmith / shadow_combat.py
Last active September 11, 2016 08:54
"""Shadow run attack simulator.
Usage:
shadow_combat.py [--debug] [--limit LIMIT | -6 | --rule_of_six] [--threshold THRESHOLD | --opposed_pool OPPOSED [--opposed_limit OPPOSED_LIMIT]] [--dv DV --stun [--soak SOAK] [--armor ARMOR [--ap AP]]] [--contact] [--once | -o | [--iterations ITERATIONS] [-D | --distribution]] [--multi ATTACKS] [--min DAMAGE] ATTACK_POOL
shadow_combat.py [--debug] [--contact] [-6 | --rule_of_six] --threshold THRESHOLD ATTACK_STRING DAMAGE_STRING SOAK_STRING
shadow_combat.py [--debug] [--contact] [-D | --distribution] [-6 | --rule_of_six] --threshold THRESHOLD ATTACK_STRING DAMAGE_STRING SOAK_STRING ITERATIONS
shadow_combat.py [--debug] [--contact] [-6 | --rule_of_six] ATTACK_STRING DAMAGE_STRING DEFENSE_STRING SOAK_STRING
shadow_combat.py [--debug] [--contact] [-D | --distribution] [-6 | --rule_of_six] ATTACK_STRING DAMAGE_STRING DEFENSE_STRING SOAK_STRING ITERATIONS
shadow_combat.py (-h | --help)
shadow_combat.py (-v | --version)
@cbsmith
cbsmith / cloud-config.yml
Last active September 26, 2016 06:25 — forked from skippy/cloud-config.yml
modifying fleet metadata (from aws meta-data service) before fleet.service start; this is a proof of concept (but it works!)
#cloud-config
---
coreos:
units:
- name: update-fleet-metadata.service
command: start
content: |-
[Unit]
Description=Update Fleet metadata tag
Before=fleet.service
@cbsmith
cbsmith / example.com.html
Created November 23, 2016 04:54
This is what example.com looks like from Southwest.
<!doctype html>
<html>
<head><link href="http://getconnected.southwestwifi.com/unb/unb.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="http://getconnected.southwestwifi.com/unb/jqr44-1.8.3.js"></script>
<script type="text/javascript">var r44_btime=new Date();var r44_smu_time=1479876620.446</script>
<script type="text/javascript" src="http://getconnected.southwestwifi.com/unb/unb.js"></script>
<title>Example Domain</title>
@cbsmith
cbsmith / livecat.py
Last active March 26, 2017 22:12
First pass at doing a live "cat" in python
'''
Live cat of file. Uses mmap to try to be efficient with memory,
though reads a byte at a time, so it burns through CPU by hitting the
python interpreter loop N times. We could add buffering, but that
would just make the code more complex, and who wants that?
stdout gets the default buffering, so consider invoking with
-u flag/PYTHONBUFFERED environment variable if not writing to
a file.
@cbsmith
cbsmith / livetail.py
Last active March 26, 2017 22:31
Live tail of a file
'''
Live tail of a file. Uses mmap to try to be efficient with memory.
Requires fsmonitor: https://github.com/shaurz/fsmonitor
...which unfortunately lacks a decent monitor for non-Windows/Linux
systems, so burns up CPU unnecessarily on those platforms. Despite its
reputation, python makes it surprisingly difficult to write clean and
correct code.
'''
@cbsmith
cbsmith / config_gen.py
Created April 4, 2017 05:47
Python to generate all possible permutations of config options
from itertools import chain, ifilter, product
# These first few functions are just to sanitize data structures to deal with huamns
# providing data in ways that are convenient for their minds.
def is_iterable(x):
return hasattr(x, '__iter__')
def as_config_values(values):