Ian icchan

I help people build things to run in the cloud.

icchan / canvas-spiral.html

Last active October 14, 2018 05:30

Drawing a spiral on the HTML5 canvas using javascript

	<!DOCTYPE HTML>
	<html><body>
	<canvas id="myCanvas" width="300" height="300" style="border:1px solid #c3c3c3;"></canvas>
	<script type="text/javascript">
	var c=document.getElementById("myCanvas");
	var cxt=c.getContext("2d");
	var centerX = 150;
	var centerY = 150;
	cxt.moveTo(centerX, centerY);

icchan / go-decryption.go

Last active August 29, 2015 14:05

Function to decrypt an aes encrypted and base64 encoded string

	func decrypter(crypto string, keyString string) string {
	paddedKey := fmt.Sprintf("%-16s", keyString) // 16 bytes
	key := []byte(paddedKey)

	bc, err := aes.NewCipher(key)
	if err != nil {
	fmt.Println(err)
	}

	src, _ := hex.DecodeString(crypto)

icchan / bootstrap-kick

Created August 22, 2014 02:34

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="utf-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<meta name="description" content="">
	<meta name="author" content="">
	<link rel="icon" href="favicon.ico">

icchan / geospatial-querying-with-go-and-mongodb.go

Created October 18, 2014 07:37

Geospatial Querying with GoLang and MongoDB

icchan / RegexCardValidator.java

Last active May 16, 2024 04:13

Java Credit Card Number Validator

	package net.bubblemix.cardcheck;

	/**
	* Validator for credit card numbers
	* Checks validity and returns card type
	*
	* @author ian.chen
	*/
	public class RegexCardValidator {

icchan / SampleControllerTest.java

Created October 7, 2015 07:17

	import static org.hamcrest.Matchers.equalTo;
	import static org.junit.Assert.assertThat;
	import static org.mockito.Mockito.when;

	import java.io.IOException;

	import org.junit.Before;
	import org.junit.Test;
	import org.mockito.Mockito;
	import org.springframework.http.HttpStatus;

icchan / EmbeddedCassandraTest.java

Created November 17, 2015 07:10

Embedded Cassandra Spring JUnit Test

	package net.bubblemix.test;

	import org.cassandraunit.spring.CassandraDataSet;
	import org.cassandraunit.spring.CassandraUnitTestExecutionListener;
	import org.cassandraunit.spring.EmbeddedCassandra;
	import org.junit.After;
	import org.junit.Before;
	import org.junit.Test;
	import org.junit.runner.RunWith;
	import org.slf4j.Logger;

icchan / ian-svg.html

Last active November 20, 2015 03:05

A svg of the ian hair logo

icchan / ripemd160-example.go

Created February 9, 2016 08:04

	package main

	import (
	"fmt"
	"golang.org/x/crypto/ripemd160"
	)

	func main() {
	hasher := ripemd160.New()
	hasher.Write([]byte("The quick brown fox jumps over the lazy dog"))

icchan / LoggerFilter.java

Created February 19, 2016 10:19

A filter for logging the HTTP header and body, but allowing it to be read again in the next filter, servlet or controller

	package net.bubblemix;

	import java.io.BufferedReader;
	import java.io.IOException;
	import java.io.InputStreamReader;
	import java.io.UnsupportedEncodingException;
	import java.util.Enumeration;

	import javax.servlet.Filter;
	import javax.servlet.FilterChain;