cpilsworth

import org.apache.sling.api.SlingHttpServletResponse;
import org.apache.sling.api.wrappers.SlingHttpServletResponseWrapper;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletResponse;

cpilsworth

‪env | grep "$TPL_PREFIX" | while read -r VAR;‬
‪do‬
‪  REPLACE="s/`echo "$VAR" | sed -e s,=,/,`/" ‬
‪  sed -e "$REPLACE" "$SOURCE_FILE" > "$TARGET_FILENAME"‬
‪done‬

cpilsworth

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <!-- ====================================================================== -->
    <!-- P R O J E C T  D E S C R I P T I O N                                   -->
    <!-- ====================================================================== -->
    <groupId>uk.co.diffa.contentsync</groupId>
    <artifactId>sync</artifactId>

cpilsworth

'use strict';

var crypto = require('crypto');

// Lambda@Edge does not allow for environment variables so compare credential hash rather than store credentials in code 
// sha256 hex digest of the Basic base64(username:password) header
// e.g. show below, generated on mac:
//         echo -n "Basic `(echo -n 'admin:password' | openssl base64)`" | shasum -a 256
const authStringSha256 = '9f19de0237c9bd59f803de1785f7aea4e3499b6929df3428e1b415fed81f797a';                           

cpilsworth

'use strict';
exports.handler = (event, context, callback) => {

    // Get request and request headers
    const request = event.Records[0].cf.request;
    const headers = request.headers;

    // Configure authentication
    const authUser = 'user';
    const authPass = 'pass';

cpilsworth

Configuring java for an A+ ssllabs.com server rating

It never used to be possible to get an A+ rating, as Java missed a couple of necessary features

Setting up the server

Getting Java 9

wget http://download.java.net/java/GA/jdk9/9/binaries/jdk-9+181_linux-x64_bin.tar.gz

Getting the LetsEncrypt/EFF certbot

cpilsworth

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.myapp</groupId>
    <artifactId>jjwt</artifactId>
    <version>0.6.0</version>
    <packaging>bundle</packaging>
    <name>JSON Web Token support for the JVM</name>
    <description>
        This bundle simply wraps ${pkgGroupId}-${pkgVersion}.jar and makes android.util optional
    </description>

cpilsworth

Internet Scale Services Checklist

A checklist for designing and developing internet scale services, inspired by James Hamilton's 2007 paper "On Desgining and Deploying Internet-Scale Services."

• http://mvdirona.com/jrh/talksandpapers/jamesrh_lisa.pdf

Basic tenets

• Does the design expect failures to happen regularly and handle them gracefully?
• Have we kept things as simple as possible?

cpilsworth

<sly data-sly-use.form="test.js"></sly>
sly data-sly-test.errors="${form.validate}"></sly>
<sly data-sly-test="${errors}">${form.renderForm}</sly>
<sly data-sly-test="${!errors}">${form.redirectSuccess}</sly>

cpilsworth

Install XCode command line tools

gcc will trigger the download dialog.

Download brew

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

Install Brews

brew install git