euank’s gists

euank / antipattern-outer-try.js

Created May 21, 2014 03:22

	var fs = require('fs');
	try {
	fs.readFile('/tmp/kek.not-json', function(err, data) {
	JSON.parse(data);/* exception, uncaught */
	})
	} catch(ex) {
	console.log("I don't print. It instead errors out with an exception");
	}

euank / GameTime.rb

Last active August 29, 2015 14:01

Ruby code found in the wild by a friend (distributed by facebook no less. wow). I made it slightly better, but it's still, with no offense to the author, pretty bad code

	#Basic Game Time + Night/Day v1.6.2
	#----------#
	#Features: Provides a series of functions to set and recall current game time
	# as well customizable tints based on current game time to give the
	# appearance of night and day.
	#
	#Usage: Script calls:
	# GameTime::minute? - returns the current minute
	# GameTime::hour? - returns the current hour
	# GameTime::set(time) - sets the game time to time, in frames (max:1440)

euank / RandNum.java

Created June 4, 2014 20:42

Yes it's a joke. Random number generator in java.

	import java.net.*;
	import java.io.*;
	import java.util.*;

	class RandNum {
	public static void main(String[] args) {
	for(int i=0;i<100;i++) {
	System.out.println("Your random number is: " + GetRandomNumber(1,2));
	}
	}

euank / gist:e80269ed5d5c2eee9c1f

Created December 24, 2014 20:52

keybase proof....

	### Keybase proof

	I hereby claim:

	* I am euank on github.
	* I am euank (https://keybase.io/euank) on keybase.
	* I have a public key whose fingerprint is B21D B279 98F1 8351 633B 0A07 173E 1948 65D4 40F2

	To claim this, I am signing this object:

euank / run-many-coreos-container-instances.rb

Created May 19, 2015 01:43

An attempt to reproduce a reported problem (see https://github.com/aws/amazon-ecs-agent/issues/74)

	require 'aws-sdk'
	require 'base64'

	COREOS_AMI="ami-4b1c763c"

	ec2 = Aws::EC2::Client.new(region: 'eu-west-1')
	ecs = Aws::ECS::Client.new(region: 'eu-west-1')

	NUM_INSTANCES=10

euank / Dockerfile

Last active March 14, 2023 23:40

ECS / EC2 Metadata entrypoint example

	FROM golang:1.4

	COPY entrypoint.sh /entrypoint.sh
	COPY main.go main.go
	RUN go build -o main main.go
	RUN chmod +x /entrypoint.sh

	EXPOSE 8080
	ENTRYPOINT ["/entrypoint.sh"]
	CMD ["./main"]

euank / docker_pull.bt

Created August 24, 2015 16:47

Docker pull deadlock backtrace; v1.6.2

	goroutine 0 [idle]:
	runtime.futex(0x134f1b8, 0x0, 0x0, 0x0, 0x0, 0x134e400, 0x1, 0x41a0ef, 0x41a30e, 0x134f1b8, ...)
	/usr/local/go/src/runtime/sys_linux_amd64.s:277 +0x21
	runtime.futexsleep(0x134f1b8, 0xc200000000, 0xffffffffffffffff)
	/usr/local/go/src/runtime/os_linux.c:49 +0x47
	runtime.notesleep(0x134f1b8)
	/usr/local/go/src/runtime/lock_futex.go:145 +0xae
	stopm()
	/usr/local/go/src/runtime/proc.c:1178 +0x119
	exitsyscall0(0xc20837e480)

euank / docker_pull_v2.bt

Created August 24, 2015 17:07

Docker 1.8.0-dev deadlock in v2 pull / error handling

	Containers: 173
	Images: 493
	Storage Driver: aufs
	Root Dir: /var/lib/docker/aufs
	Backing Filesystem: extfs
	Dirs: 881
	Dirperm1 Supported: false
	Execution Driver: native-0.2
	Logging Driver: json-file
	Kernel Version: 3.13.0-48-generic

euank / docker_create.go

Created August 24, 2015 22:27

A program that calls `docker create` at the given frequency

	package main

	import (
	"flag"
	"time"

	"github.com/Sirupsen/logrus"
	"github.com/fsouza/go-dockerclient"
	)

euank / docker_create_fd.bt

Created August 24, 2015 22:38

Go stackdump of the Docker daemon after getting into a broken state related to FDs

	time="2015-08-24T22:34:31.891960861Z" level=info msg="=== BEGIN goroutine stack dump ===
	goroutine 10 [running]:
	github.com/docker/docker/pkg/signal.DumpStacks()
	/root/rpmbuild/BUILD/docker-engine/.gopath/src/github.com/docker/docker/pkg/signal/trap.go:60 +0x7a
	github.com/docker/docker/daemon.func·021()
	/root/rpmbuild/BUILD/docker-engine/.gopath/src/github.com/docker/docker/daemon/debugtrap.go:18 +0x6d
	created by github.com/docker/docker/daemon.setupSigusr1Trap
	/root/rpmbuild/BUILD/docker-engine/.gopath/src/github.com/docker/docker/daemon/debugtrap.go:20 +0x18e

	goroutine 1 [chan receive, 6017 minutes]:

Euan Kemp euank