thomasmichaelwallace

""" Lambda to launch ec2-instances """
import boto3

REGION = 'eu-central-1' # region to launch instance.
AMI = 'ami-24bd1b4b'
    # matching region/setup amazon linux ami, as per:
    # https://aws.amazon.com/amazon-linux-ami/
INSTANCE_TYPE = 'm3.medium' # instance type to launch.

EC2 = boto3.client('ec2', region_name=REGION)

thomasmichaelwallace

@-moz-document regexp('https://.*\\.atlassian\\.net/secure/.*') {

  #filter_lnk_all {
    display: none;
  }

  #filter_lnk_my {
    display: none;
  }
  

thomasmichaelwallace

// a connection singleton.
let dbConnectionPromise;
function getDb() {
  if (dbConnectionPromise) {
    return dbConnectionPromise;
  }
  dbConnectionPromise = DbClient.connect(options);
  return dbConnectionPromise;
}

thomasmichaelwallace

// with arrays
const dupArr = [1, 1, 2, 3, 1];
const uniArr = [...(new Set(dupArr))];
// [1, 2, 3]

// with objects on a key.
const dupObj = [{ id: 1, value: 'a' }, { id: 2, value: 'b' }, { id: 1, value: 'c' }];
const uniKeys = [...(new Set(dupObj.map(({ id }) => id)))];
// [ '1', '2' ]

thomasmichaelwallace

const testCount = 1e7;
const keyCount = 10;

const times = count => Array.from(Array(count))
const message = (test, runtime) => `${test} took ${((runtime[0] * 1e9) + runtime[1]) / 1e6}ms`;

const obj = times(keyCount)
  .map(Math.random)
  .reduce((o, p) => Object.assign({}, o, { [p.toString()]: Math.random() }), {});
const hasKey = Object.keys(obj)[0];

thomasmichaelwallace

describe('My awesome new way of doing things', () => {
  it('should be performant.' () => {
    const maxRunTimeMs = 500;
    const start = process.hrtime();
    return doSomethingAwesome()
      .then(() => {
        const runtime = process.hrtime(start);
        const runtimeNs = (runtime[0] * 1e9) + runtime[1];
        const runtimeMs = runtimeNs / 1e6;
        expect(runtimeMs).to.be.lessThan(maxRunTimeMs);

thomasmichaelwallace

files:
  "/etc/cron.hourly/cron.logrotate.elasticbeanstalk.nodejs.conf":
    mode: "000655"
    owner: root
    group: root
    content: |
      #!/bin/sh
      test -x /usr/sbin/logrotate || exit 0
      /usr/sbin/logrotate /etc/logrotate.elasticbeanstalk.hourly/logrotate.elasticbeanstalk.nodejs.conf
      /sbin/service awslogs restart

thomasmichaelwallace

const amazing = (event, context, callback) => {
  const { requestContext: { authorizer } } = event;
  const body = {
    hello: 'world',
    authContext: authorizer,
  };
  const response = {
    statusCode: 200,
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(body),

thomasmichaelwallace

const yourAuthorizationLogic = require('./yourAuthorizationLogic');

const generateIamPolicy = (principalId, Effect, Resource, context) => ({
  principalId,
  policyDocument: {
    Version: '2012-10-17',
    Statement: [{ Action: 'execute-api:Invoke', Effect, Resource }],
  },
  context,
});

thomasmichaelwallace

container_commands:
  00download:
    command: "wget http://aws-cloudwatch.s3.amazonaws.com/downloads/CloudWatchMonitoringScripts-1.2.1.zip"
    ignoreErrors: true
  01extract:
    command: "unzip -o CloudWatchMonitoringScripts-1.2.1.zip"
    ignoreErrors: true
  02rmzip:
    command: "rm CloudWatchMonitoringScripts-1.2.1.zip"
    ignoreErrors: true